WO2022242755A1 - Sealed container and preparation method therefor, sheet composite material, and container precursor - Google Patents

Abstract

A sealed container, a sheet composite material, a container precursor, and a preparation method for a sealed container. The sealed container (100) comprises: a top portion (101), a top bonding portion (102), an auxiliary separation component (105), a composite layer and a bottom portion (107). The top portion (101) comprises a top surface and a first region (103). The first region (103) and the top bonding portion (102) are bonded to each other and completely overlap. The auxiliary separation component (105) is clamped between the first region (103) and the top bonding portion (102). The composite layer comprises an inner heat-sealing layer, a supporting layer and an outer heat-sealing layer away from contents in the sealed container, which layers are sequentially stacked. When the bottom portion (107) is placed on a horizontal plane or a substantially horizontal plane, the sealed container (100) remains in a stable state. When the sealed container (100) is heated to a preset temperature, the top portion (101) and the top bonding portion (102) can be separated, thereby preventing the sealed container (100) from cracking or the contents therein from splashing.

Description

Sealed container and method for its preparation, sheet-like composite material and container precursor

Cross References to Related Applications

For all purposes, this application is based on and claims the priority of Chinese Patent Application No. 202110559783.7, filed on May 21, 2021, entitled "Sealed Container and Preparation Method Thereof, Sheet Composite Material, and Container Precursor", filed at The content disclosed in the above-mentioned Chinese patent application is cited in its entirety as a part of this application.

technical field

Embodiments of the present disclosure relate to a sealed container, a sheet-like composite material, a container precursor, and a method of manufacturing a sealed container.

Background technique

Food needs to go through the process of loading and unloading, transportation and storage in the whole circulation process. Food packaging protects food and is an important part of food products. Food packaging can prevent food from being damaged by biological, chemical or physical external factors during the circulation of food products from the packaging factory to the hands of consumers, that is, food packaging has the function of maintaining the stable quality of the food itself. The design of beautiful and practical food packaging also has the function of attracting consumers. This design is not only reflected in the convenience of eating food, but also in the aesthetic feeling of the appearance of food packaging, which has value other than the food packaged in it. , therefore, food packaging process is also an integral part of food manufacturing system engineering.

For example, food packaging includes containers made of a laminate comprising an outer polymer layer, a carrier layer of cardboard or paper to impart dimensional stability to the container, an adhesion promoter layer, a barrier layer, and an inner polymer layer. Decorative or printed graphics are an important part of food packaging, such decorative or printed graphics can include information about food ingredients and instructions to be stored in containers formed from laminated materials, and can also provide consumers with Provides a visually appealing appearance.

Contents of the invention

At least one embodiment of the present disclosure provides a sealed container, including: a top, including a top surface and a side surface above about half the height of the sealed container, and including a first region; The top is connected, wherein the first area and the top adhesive part are bonded to each other and completely overlapped; the sealed container further includes an auxiliary separating part, and the auxiliary separating part is interposed between the first area and the Between the top bonding parts, the sealed container includes a composite layer, the composite layer includes an inner heat-seal layer, a support layer and an outer heat-seal layer away from the contents of the sealed container stacked in sequence, the auxiliary The material of the separation part is different from that of the outer heat-sealing layer; the sealed container also includes a bottom, and when the bottom is placed on a horizontal surface or a substantially horizontal surface, the sealed container remains stable.

For example, in the airtight container provided in at least one embodiment of the present disclosure, there is a trace line at the position where the top adhesive part is connected to the top, and the top adhesive part is folded relative to the top along the trace line to a position where the first region and the top bonding portion are bonded to each other; the auxiliary separation member is disposed spaced apart from the trace line.

For example, in the airtight container provided in at least one embodiment of the present disclosure, the plane shape of the auxiliary separation component includes a first polygon, and the first polygon includes a first vertex, and the first vertex The vertex is the point of the auxiliary separation part farthest from the trace line; the planar shape of the top bonding part is a second polygon, and the second polygon includes a second vertex angle, and the second The vertex of the vertex is the point farthest from the trace line of the top bonding part; the shortest distance between the first polygon and the trace line is the first distance; the second vertex to the trace The shortest distance of the lines is the second distance; the first distance is greater than or equal to half of the second distance.

For example, in the airtight container provided in at least one embodiment of the present disclosure, the auxiliary separation component includes a plurality of dot patterns separated from each other and/or the auxiliary separation component includes a grid pattern.

For example, in the sealed container provided by at least one embodiment of the present disclosure, the area of the auxiliary separation component is 5%-80% of the area of the first region.

For example, in the airtight container provided in at least one embodiment of the present disclosure, the airtight container is cylindrical, and the top bonding part is disposed on the side surface of the top.

For example, in the airtight container provided in at least one embodiment of the present disclosure, the airtight container includes two oppositely arranged top adhesive parts, and only one of the top adhesive parts and the first region Said auxiliary separation means are provided.

For example, the sealed container provided in at least one embodiment of the present disclosure further includes a top sealing part and a bottom sealing part, wherein the sealing strength of the top sealing part is smaller than that of the bottom sealing part.

For example, in the sealed container provided in at least one embodiment of the present disclosure, the auxiliary separation component includes ink; the outer surface of the sealed container is provided with a decorative pattern, the decorative pattern has at least one color and the auxiliary separation component same.

For example, in the airtight container provided in at least one embodiment of the present disclosure, the auxiliary separating part includes a first adhesive, and the first region and the top adhesive part are bonded to each other by the first adhesive , and the softening temperature of the first binder is 40°C-70°C.

For example, in the airtight container provided in at least one embodiment of the present disclosure, the auxiliary separation component includes a first adhesive, and a second adhesive is interposed between the first region and the top adhesive part , the first region and the top bonding portion are bonded to each other by the first adhesive and the second adhesive, the softening temperature of the first adhesive being lower than that of the second adhesive The softening temperature of the binder.

For example, in the sealed container provided in at least one embodiment of the present disclosure, when the temperature of the sealed container reaches a first preset temperature, the top adhesive part is configured to be separated from the top; when the sealed container When the temperature reaches a second preset temperature, the airtight container is configured to form a pressure relief opening, and the pressure relief opening is configured to communicate the interior of the airtight container to the external environment; the first preset temperature is less than or equal to the set temperature the second preset temperature.

At least one embodiment of the present disclosure also provides a sheet-like composite material, the sheet-like composite material includes a first surface and a second surface, and includes a first composite region and a second composite region, wherein the first composite region includes The first heat-sealing layer, the supporting layer and the second heat-sealing layer stacked in sequence from the first surface to the second surface; The laminated auxiliary separation member, the first heat-sealing layer, the support layer and the second heat-sealing layer, and the material of the auxiliary separation member is different from that of the first heat-sealing layer, the sheet The sheet-like composite material also includes two first boundary edges parallel to the longitudinal direction and two second boundary edges parallel to the transverse direction, the longitudinal direction and the transverse direction are orthogonal; the sheet-like composite material also includes a bottom transverse crease lines and top transverse crease lines dividing the sheet-like composite material into: a bottom region comprising a bottom crease pattern; a top region comprising a bottom crease pattern; comprising a top crease pattern; and an intermediate region between said bottom transverse crease line and said top transverse crease line and located relative to said longitudinal direction between said bottom region and said top region; The top transverse crease line comprises: a top central portion; at least one top end portion disposed on one side of the top central portion and adjacent to one of the first border edges; and at least one top side portion adjacent to extending on one side of the top central portion and between the top central portion and the at least one top end portion; the top crease pattern comprising at least one pair of oblique crease lines relative to the longitudinal direction and both of said transverse directions are skewed and extend within said top region; wherein said inclined crease line has a first end pointing towards one of said second boundary edges and a continuation line second end portion, said continuous line parallel to said transverse direction and comprising said top central portion of said top transverse crease line and said at least one top end portion; said oblique crease line and said at least one The top side portions together define a flap region of the sheet-form composite material configured to form at least a portion of a top bond; wherein the top crease pattern further comprises at least one pair of longitudinal crease lines, which extend within said top region, are arranged on opposite sides of said flap region with respect to said transverse direction, and together define a fold line; said top region comprises a first region, said flap region and said flap region a top region connection, wherein the first region and the flap region are arranged to be bondable to each other and fully overlapable, and an auxiliary separation member is provided in at least one of the first region and the flap region , and the flap region and/or the first region provided with the auxiliary separating member corresponds to the second composite region.

For example, in the sheet-shaped composite material provided in at least one embodiment of the present disclosure, in the first composite region, a decorative pattern is provided on the side of the first heat-sealing layer away from the second heat-sealing layer , the decorative pattern has at least one color that is the same as that of the auxiliary separation component.

At least one embodiment of the present disclosure further provides a container precursor, the container precursor comprising: the sheet-shaped composite material in any one of the above-mentioned embodiments and a longitudinal seam, wherein the longitudinal seam connects the sheet-shaped composite material Two of said first boundary edges are connected to form a surrounding container precursor.

For example, in the container precursor provided in at least one embodiment of the present disclosure, the auxiliary separation component is exposed to the external environment or the auxiliary separation component is covered by a release film detachable from the auxiliary separation component.

For example, in the container precursor provided in at least one embodiment of the present disclosure, the auxiliary separation component includes ink; at least one of the outer surface of the top region and the outer surface of the flap region is provided with a decorative pattern, the The decorative pattern has at least one color that is the same as that of the auxiliary separating member.

For example, in the container precursor provided in at least one embodiment of the present disclosure, the auxiliary separation component includes a first adhesive, and the softening temperature of the first adhesive is 40°C-70°C.

For example, in the container precursor provided in at least one embodiment of the present disclosure, the auxiliary separation component includes a first adhesive, and at least one of the first region and the flap region is further provided with a second adhesive , the softening temperature of the first binder is lower than the softening temperature of the second binder.

At least one embodiment of the present disclosure also provides a method for preparing a sealed container, the preparation method includes: providing a top, the top includes a top surface and a side surface that is more than half the height of the sealed container to be formed, and includes a second a region; providing a top bond, the top bond being connected to the top; bonding the first region and the top bond to each other and completely overlapping; wherein,

The manufacturing method further includes: providing an auxiliary separation member interposed between the first region and the top adhesive portion, wherein the sealed container to be formed includes a composite layer, the The composite layer includes an inner heat-sealing layer, a support layer and an outer heat-sealing layer away from the contents of the sealed container to be formed in sequence, and the material of the auxiliary separation component is the same as the material of the outer heat-sealing layer Different; the preparation method further includes: providing a bottom, and when the bottom is placed on a horizontal surface or a substantially horizontal surface, the sealed container remains stable.

For example, the preparation method provided by at least one embodiment of the present disclosure further includes: forming a decorative pattern on the outer surface of the sealed container to be formed, and using at least one color of ink forming the decorative pattern to form the auxiliary Separate parts.

For example, in the preparation method provided in at least one embodiment of the present disclosure, providing the auxiliary separation member includes: using a first adhesive to form the auxiliary separation member, and the softening temperature of the first adhesive is 40° C. -70° C.; the first region and the top bonding portion are bonded to each other by the first adhesive.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present disclosure more clearly, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description only relate to some embodiments of the present disclosure, rather than limiting the present disclosure .

FIG. 1 is a schematic diagram of a three-dimensional structure of a sealed container provided by an embodiment of the present disclosure;

Fig. 2 is a schematic diagram of the planar structure after the top and the top bonding part are disassembled in Fig. 1;

Fig. 3 is the cross-sectional structure schematic diagram along A-A ' line in Fig. 1;

FIG. 4 is a schematic plan view of an auxiliary separation component and a first region provided by an embodiment of the present disclosure;

Fig. 5 is a schematic plan view of an auxiliary separation component and a top bonding part provided by an embodiment of the present disclosure;

Fig. 6 is a schematic plan view of an auxiliary separation component provided by an embodiment of the present disclosure;

Fig. 7 is a schematic structural view of the top bonding part and the top in a separated state provided by an embodiment of the present disclosure;

Fig. 8A is a schematic plan view of the bottom of a sealed container provided by an embodiment of the present disclosure;

Fig. 8A' is a schematic cross-sectional structure diagram of the bottom of the sealed container in Fig. 8A along the line O-O';

Fig. 8B is a schematic plan view of the bottom of another sealed container provided by an embodiment of the present disclosure;

Fig. 8B' is a schematic cross-sectional structural view of the bottom of the sealed container in Fig. 8B along the line O-O';

Fig. 8C is a schematic plan view of the bottom of another sealed container provided by an embodiment of the present disclosure;

Fig. 8C' is a schematic cross-sectional structure diagram of the bottom of the sealed container in Fig. 8C along the line O-O';

Fig. 9A is a schematic plan view of a sheet-like composite material provided by an embodiment of the present disclosure;

Fig. 9B is a schematic cross-sectional structure diagram obtained by cutting the sheet-like composite material in Fig. 9A along the line A-A';

FIG. 10 is a schematic three-dimensional structure diagram of a container precursor formed by using the sheet-like composite material in FIG. 9A provided by an embodiment of the present disclosure;

Fig. 11 is a schematic diagram of a three-dimensional structure of a container precursor provided by an embodiment of the present disclosure;

Fig. 12 is a schematic plan view of a top bonding part and auxiliary separation parts provided by an embodiment of the present disclosure;

Fig. 13 is a schematic plan view of the top bonding part and the auxiliary separation part provided by another embodiment of the present disclosure;

Fig. 14 is a schematic diagram of a three-dimensional structure of a container precursor provided by another embodiment of the present disclosure;

Fig. 15 is a flowchart of a method for preparing a sealed container according to an embodiment of the present disclosure;

Fig. 16 is a flowchart of a method for preparing a sealed container according to yet another embodiment of the present disclosure;

Fig. 17 is a flowchart of a method for preparing a sealed container according to another embodiment of the present disclosure; and

Fig. 18 is a flowchart of a method for preparing a sealed container according to another embodiment of the present disclosure.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Apparently, the described embodiments are some of the embodiments of the present disclosure, not all of them. Based on the described embodiments of the present disclosure, all other embodiments obtained by persons of ordinary skill in the art without creative effort fall within the protection scope of the present disclosure.

Unless otherwise defined, the technical terms or scientific terms used in the present disclosure shall have the usual meanings understood by those skilled in the art to which the present disclosure belongs. "First", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Comprising" or "comprising" and similar words mean that the elements or items appearing before the word include the elements or items listed after the word and their equivalents, without excluding other elements or items. Words such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "Down", "Top", "Bottom" and so on are only used to indicate the relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

Using a microwave oven to heat food has the advantages of quickness, strong operability, high safety, and hygiene. Therefore, a microwave oven is usually used to heat food. Due to the limitation of actual conditions, it is sometimes inconvenient to transfer food to a container suitable for microwave ovens, but to directly heat the packaged food without opening the package, which requires the use of materials suitable for microwave ovens to form food packaging. The materials suitable for microwave ovens include non-metallic materials, for example, polyethylene terephthalate (PET) is used to form the first film layer, and then the first film layer is coated with inorganic metal oxides to form food packaging materials, In order to replace the commonly used metal aluminum as food packaging materials.

In addition, since there are many types of food heated by the same microwave oven, some food is heated after unpacking, and some food is transferred to an open container for heating, which will inevitably leave residues in the microwave oven. The smell of some previously heated food. If the post-heating food is also heated after opening the package, this will affect the quality of the post-heating food; or, some foods are heated after opening the package, due to the rotation of the support plate in the microwave oven during the heating process It will cause the food to spray out, which will pollute or damage the microwave oven on the one hand, and cause food waste on the other hand. Therefore, it is necessary to directly heat the food sealed in the package with a microwave oven.

Because the airtightness of the airtight container is very good, and the airtight container is usually not completely filled with food, some gas will remain in the airtight container, or water vapor will be generated during the heating process of the airtight container containing fluid food Therefore, the gas remaining in the sealed container and/or the water vapor generated during the heating process will usually cause the sealed container to expand due to the continuation of the heating process. When the heating process continues and the internal pressure of the sealed container reaches the pressure threshold that causes the sealed container to burst or the contents in the sealed container to splash, the phenomenon of bursting of the sealed container or the splashing of the contents in the sealed container will occur, thus It is necessary to prevent the above-mentioned bursting or splashing phenomenon.

The inventors of the present disclosure have noticed that it is possible to weaken the bond between the first region of the top of the sealed container and the top bonding portion by interposing an auxiliary separation member between the first region of the top included in the sealed container and the top bonding portion. Adhesion, which makes the top adhesive more likely to pop off the top, thereby providing a pressure relief space when the contents of the sealed container are heated to prevent the contents from splattering. And the raised ear flaps can also serve as a reminder, that is, when the ear flaps are raised, it means that the heating temperature has reached the threshold, prompting the consumer to stop heating the sealed container and take out the sealed container. When the time of heating the sealed container is extended, the top and the top bonding part will be separated when the temperature of the sealed container reaches the preset temperature. As the heating process continues, the sealed container will form a pressure relief opening, so that the sealed container Gas (including residual gas during packaging and/or water vapor formed during heating) is discharged through the pressure relief opening to reduce the pressure difference between the inside and outside of the sealed container, thereby preventing the sealed container from bursting or the contents of the sealed container from splashing Phenomenon. Alternatively, an auxiliary separation member interposed between the first region of the top comprising the sealed container and the top adhesive may also make it easier for the consumer to manually pull the top adhesive away from the top of the sealed container prior to microwave heating , to pre-provide space for relieving pressure.

At least one embodiment of the present disclosure provides a sealed container, the sealed container includes: a top and a top bonding portion, the top includes a top surface and a side surface above about half the height of the sealed container, and includes a first region; the top The bonding part is connected to the top, wherein the first area and the top bonding part are bonded to each other and completely overlapped; the sealed container also includes an auxiliary separating part, which is interposed between the first area and the top bonding part, sealing The container includes a composite layer, the composite layer includes an inner heat-sealing layer, a support layer and an outer heat-sealing layer away from the contents of the sealed container stacked in sequence, and the material of the auxiliary separation part is different from that of the outer heat-sealing layer; the sealed container A bottom is also included, and when the bottom is placed on a horizontal surface or a substantially horizontal surface, the airtight container remains stable. The auxiliary separation part can weaken the adhesive force between the first region of the top and the top adhesive part, so that when the sealed container is heated, the top and the top adhesive part are separated when the temperature of the sealed container reaches a preset temperature , and then as the heating process continues, the sealed container forms a pressure relief opening, so that the gas in the sealed container is discharged from the pressure relief opening, so as to reduce the pressure difference between the inside and outside of the sealed container, thereby preventing the sealed container from bursting or the gas in the sealed container The phenomenon of splashing of contents. For example, the content in the sealed container may be a fluid, or may include a solid component with a certain amount of moisture, or may be a solid component that does not contain moisture.

For example, FIG. 1 is a schematic diagram of a three-dimensional structure of a sealed container provided by an embodiment of the present disclosure. As shown in FIG. 1), and the top bonding part 102 is connected to the top 101. When the bottom 107 is placed on a horizontal surface or a substantially horizontal surface, the airtight container 100 can maintain a stable state without falling over.

For example, in FIG. 1, the top 101 includes a top surface and a side surface above about half the height of the sealed container, and includes a first region, which and the top bonding portion 102 are bonded to each other and completely overlapped, and the top The bonding part 102 is located on the side surface of the top 101 . In other embodiments, the top bonding part 102 may also be located on the top surface of the airtight container 100 and connected to the top 101 , which is not limited in this embodiment of the present disclosure.

For example, the outer contour shape of the airtight container 100 shown in FIG. 1 is a cuboid, and the cuboid airtight container is a brick-shaped box-shaped container. Embodiments of the present disclosure are not limited thereto. The outer contour shape of the airtight container can also be a cylinder Solids, cubes, polyhedrons with faces greater than 6, etc.

For example, since the top 101 and the top bonding portion 102 are attached to each other and at least partially overlapped, for the convenience of illustration, the part shown by the dotted triangle in FIG. A part of the top 101, the part shown by the solid line triangle MNH is defined as the top bonding part 102, and the top bonding part 102 is located on the top 101, and the top bonding part 102 and the top 101 share a bottom edge at the joint.

It should be noted that the top 101 may be all or part of the cross-section D-E-F-G located in the middle of the part of the entire sealed container. For example, the top 101 can be a part at the upper end of a rectangular side surface of the cuboid in FIG. 1; the top 101 can also be all or part of the top surface of the cuboid in FIG. 1; A part of a rectangular side surface located at the upper end; FIG. 1 is shown as an example of a dotted triangle, embodiments of the present disclosure are not limited thereto, and it may also include a top sealing portion and a partial area near the top sealing portion, but does not include Top Bond 102 .

For example, in some examples, the top bonding part 102 can be other parts of the cuboid in FIG. Any polygonal part that is collinear; it may also refer only to the triangular area 102 shown in FIG. 1 , that is, the area shown by the triangle MNH.

For example, what is shown in FIG. 1 is that the planar shape of the top 101 and the planar shape of the top bonding portion 102 are both triangles. Embodiments of the present disclosure are not limited thereto, and the top 101 and the top bonding portion 102 may have different planar shapes. For example, the planar shapes of the top 101 and the top bonding portion 102 can be pentagon, heptagon, square, rectangle, combination of square and triangle, combination of rectangle and triangle, combination of circle and triangle, ellipse and triangle One of a combination of , zigzag, etc.

It should be noted that a substantially horizontal surface refers to a plane whose angle with the horizontal surface is within 30 degrees; the stable state of the airtight container means that when the airtight container is placed on a bearing plane that is stationary or rotates on a horizontal plane, Even if the top of the sealed container is open, the product inside the sealed container will not flow out.

It should also be noted that the bottom of the airtight container can be a structure in which the part of the middle area of the bottom is recessed toward the side near the top, and the part of the outer peripheral edge is in the same plane; it can also be a part of the middle area of the bottom or close to the middle area The part protrudes away from the top; or it can also be crimped on two planes. Since the thickness of the crimped plane is very thin, the bottom can be considered as a structure located on the same plane; or it can also be that the bottom The middle area is on the same plane as the top, and at least part of the edge is recessed toward the side near the top, or protrudes toward the side away from the top. Embodiments of the present disclosure do not limit the specific structure of the bottom, as long as the airtight container remains stable and does not fall over when the bottom is placed on a horizontal surface or a substantially horizontal surface.

For example, Fig. 2 is a schematic diagram of the planar structure after the top and the top adhesive part are disassembled in Fig. 1, as shown in Fig. 2, the top 101 includes a first region 103, in conjunction with Fig. Knots 102 are bonded to each other and completely overlap. For example, the bonding strength between the first region 103 and the top bonding portion 102 is 2N to 20N. In one example, the first area 103 and the top adhesive portion 102 are adhered to each other so that the airtight container 100 can be sealed more firmly after the contents 111 are filled. In one example, after the sealed container 100 is sealed, the first region 103 and the top bonding portion 102 are bonded to each other such that the sealed container 100 has a generally regular shape.

It should be noted that the bonding between the first region 103 and the top bonding portion 102 does not mean that the entire first region 103 is to be bonded to the entire top bonding portion 102, but a part of the first region 103 and a part of the top bonding portion 102 Bonding is not limited in the embodiments of the present disclosure, and it only needs to bond the top 101 and the top bonding part 102 to each other.

For example, in FIG. 2, the planar shapes of the first region 103 and the top bonding portion 102 are respectively triangular for illustration. Polygon, square, rectangle, combination of square and triangle, combination of rectangle and triangle, combination of circle and triangle, combination of ellipse and triangle, etc.

For example, FIG. 3 is a schematic cross-sectional structure diagram along the line AA' in FIG. 1, in which the first region 103 has a thickness corresponding to the thickness of the top 101, the thickness of the top bonding portion 102 and the thickness of the auxiliary separation member 105. All are enlarged, and the thickness ratios of the three are not limited to the proportional relationship in FIG. 3 . As shown in FIG. 3 , the auxiliary separating member 105 is interposed between the first region 103 and the top bonding portion 102, the sealed container 100 includes a composite layer, and the composite layer includes an inner layer heat-sealing layer, a support layer and a distance layer stacked in sequence. The material of the auxiliary separation member 105 is different from that of the outer heat-sealing layer for sealing the contents of the container.

For example, the support layer in the composite layer can be a paper base layer to play a supporting role.

For example, the material of the outer heat-sealing layer and the inner heat-sealing layer may be polyolefin.

For example, polyolefin refers to the individual polymerization or A general term for a class of thermoplastic resins obtained by copolymerization.

For example, the polyolefin includes polyethylene or polypropylene. The polyethylene is, for example, high-density polyethylene (HDPE), medium-density polyethylene (MDPE), low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), very low-density polyethylene (VLDPE) or polyethylene ( PE) etc.

For example, when the surface of the first region 103 that is in contact with the auxiliary separation member 105 is an outer heat seal layer, the material of the auxiliary separation member 105 is different from the material of the surface of the first region 103 that is in contact with the auxiliary separation member 105; or, When the surface of the top bonding part 102 that is in contact with the auxiliary separation part 105 is an outer heat seal layer, the material of the auxiliary separation part 105 is different from the material of the surface of the top bonding part 102 that is in contact with the auxiliary separation part 105; or, When the surface of the first region 103 in contact with the auxiliary separation member 105 is the outer heat seal layer, and the surface of the top bonding portion 102 that is in contact with the auxiliary separation member 105 is the outer heat seal layer, the material of the auxiliary separation member 105 Different from the material of the surface of the first region 103 in contact with the auxiliary separation member 105 and different from the material of the surface of the top bonding portion 102 in contact with the auxiliary separation member 105, in this case, the auxiliary separation member 105 may be alone, The flexible arrangement helps to conveniently implement the sealed container according to the embodiment of the present disclosure.

For example, the material of the surface of the first region 103 in contact with the auxiliary separation member 105 and the material of the surface of the top adhesive portion 102 in contact with the auxiliary separation member 105 may be the same or different.

For example, as shown in FIGS. 1 and 2 , there is a trace line 106 where the top bonding portion 102 is connected to the top 101, and along the trace line 106 the top bonding portion 102 is folded relative to the top 101 so that the first region 103 is aligned with the top portion 101. Where the top bonds 102 are bonded to each other. As shown in FIG. 1 , the trace line 106 is a straight line, and the planar shape of the corresponding top bonding portion 102 may be a triangle, a rectangle, or the like. Depending on the shape of the sealed container, the trace line 106 can also be an arc, and the planar shape of the corresponding top bonding portion 104 can be fan-shaped, semi-circular, or elliptical.

For example, the top bonding portion 102 may be a wing portion of the airtight container 100 , which may be in the top area of the airtight container and connected to the top 101 of the airtight container.

For example, FIG. 4 is a schematic plan view of an auxiliary separation component and a first region provided by an embodiment of the present disclosure. As shown in FIG. The component 105 is disposed in the area of the first region 103 away from the trace line 106 , and the auxiliary separation component 105 is disposed at the end point of the first region 103 farthest from the trace line 106 and its adjacent area. Disposing the auxiliary separating member 105 on the first region 103 away from the trace line 106 can weaken the bonding ability of the edge region, so that the top 101 and the top bonding part 102 are easier to separate at the edge during the heating process.

For example, FIG. 5 is a schematic plan view of an auxiliary separation component and a top bonding part provided by an embodiment of the present disclosure. As shown in FIG. The separating part 105 is disposed on the area of the top bonding part 102 away from the trace line 106 , and the auxiliary separating part 105 is disposed on the position of the end point of the top bonding part 102 farthest from the trace line 106 and its adjacent area. Disposing the auxiliary separating member 105 on the region of the top bonding part 102 away from the trace line 106 can weaken the bonding ability of the edge region, so that the top 101 and the top bonding part 102 are easier to separate at the edge part during the heating process.

It should be noted that the area of the first region 103 far away from the trace line 106 refers to the region of the first region 103 that is not adjacent to the trace line 106, or the position of the end point of the first region 103 farthest from the trace line 106 and The region adjacent to the end points; the region of the top bond 102 away from the trace line 106 refers to the region of the top bond 102 that is not adjacent to the trace line 106, or the end point of the top bond 102 that is farthest from the trace line 106 and the area adjacent to the endpoint.

For example, the planar shape of the auxiliary separating member 105 includes a first polygon. For example, the first polygon may be a triangle, a rhombus, a pentagon, a heptagon, a combination of a square and a triangle, a combination of a rectangle and a triangle, a combination of a circle and a triangle, a combination of an ellipse and a triangle, or a zigzag.

For example, Fig. 5 illustrates that the first polygon is a triangle as an example, the first polygon ABC includes the first vertex angle < ABC, and the vertex B (first vertex) of the first vertex angle < ABC is an auxiliary separation The point of the part 105 furthest from the trace line 106 .

For example, as shown in Figure 5, the planar shape of the top bonding portion 102 is a second polygon, for example, the second polygon can be a combination of triangle, rhombus, pentagon, heptagon, square and triangle , a combination of a rectangle and a triangle, a combination of a circle and a triangle, a combination of an ellipse and a triangle, or a zigzag, etc.

For example, Fig. 5 illustrates by taking the second polygon as a triangle as an example, the second polygon A'B'C' includes a second vertex angle<A'B'C', and the second vertex angle<A The vertex B' (second vertex) of 'B'C' is the point of the top bond 102 farthest from the trace line 106, and the first vertex <ABC coincides with the second vertex <A'B'C'. For example, setting the end point B of the auxiliary separation member 105 furthest from the trace line 106 to coincide with the end point B' of the top adhesive part 102 furthest from the trace line 106 can weaken the edge portion relative to the case where the lines coincide at the edge. The bonding ability at the end point position, so that the top 101 and the top bonded part 102 are easier to separate at the end point B' position of the edge portion of the top bonded part 102 during the heating process, so that the top bonded part 102 The end point B' of is more likely to warp, and due to the effect of tensile stress, the top bonding part 102 is more likely to be separated from the top 101 gradually from the position of the end point B' to the position close to the trace line 106 .

For example, as shown in Figure 5, the shortest distance between the first polygon ABC and the trace line 106 is the first distance d1, and the shortest distance between the first vertex B and the second vertex B' and the trace line 106 is the second distance d2, the first distance d1 is greater than or equal to half of the second distance d2. That is, what is shown in FIG. 5 is that d1 is greater than half of the second distance d2. For example, the above-mentioned first distance d1 is greater than or equal to the distance relationship of half of the second distance d2, which can ensure that the auxiliary separation member 105 is arranged on the half area or the small half area of the top bonding part 102 away from the trace line 106 (that is, as shown in FIG. 5), so that the top 101 and the top bonding portion 102 are more easily separated in the area away from the trace line 106, and in the first polygon ABC and the second polygon A'B'C' are both isosceles triangles, the area of the auxiliary separating part 105 can be less than or equal to half of the area of the top bonding part 102, and it can also ensure that the first region 103 and the top A sufficient bonding area between the bonding parts 102 can ensure the airtightness of the airtight container 100 .

For example, as shown in FIG. 5 , the side AC of the first polygon ABC opposite to the first vertex angle <ABC is the first base, and the first base AC is parallel to the trace line 106 . The side opposite to the second vertex angle <A'B'C' of the second polygon A'B'C' is the second base A'C', and the second base A'C' is parallel to The trace line 106 does not coincide with the trace line 106 . The bottom edge of the top bond 102 coincides with the trace line 106 .

For example, FIG. 6 is a schematic plan view of an auxiliary separation component provided by an embodiment of the present disclosure. As shown in FIG. 6(a), the auxiliary separation component 105 includes a grid pattern; or, as shown in FIG. 6(b) As shown, the auxiliary separation part 105 includes a plurality of dot patterns separated from each other; or, as shown in FIG. 6(c), the auxiliary separation part 105 includes a combination of a plurality of dot patterns and grid patterns separated from each other. 1 and 2, when the auxiliary separating member 105 shown in any one of FIGS. Adhesive force between the first region 103 and the top bonding part 102 can be ensured to have sufficient and uniform adhesive force. For example, when the entire top bonding part 102 is provided with the above-mentioned auxiliary separation part 105, and the heating temperature of the sealed container 100 reaches a preset temperature, the top 101 and the top bonding part 102 will be separated quickly, thereby speeding up the subsequent need to form When the pressure relief opening is formed, the speed of the pressure relief opening is formed, so that the gas in the sealed container is released in time. In addition, the structural design shown in Figure 6 (a)-6 (c) can also ensure that the various parts of the auxiliary separation component Uniformity of structure and material setup.

For example, in one example, the area of the auxiliary separating member 105 is 5%-80% of the area of one of the first region 103 and the top bonding part 102 . For example, the area of the auxiliary separating member 105 is 5%-80% of the area of the first region 103, for example, the area of the auxiliary separating member 105 is 5%, 10%, 20%, 30% of the area of the first region 103, 40%, 50%, 60%, 70% or 80%. For example, the area of the auxiliary separating part 105 is 5%-80% of the area of the top bonding part 102, for example, the area of the auxiliary separating part 105 is 5%, 10%, 20%, 30% of the area of the top bonding part 102 %, 40%, 50%, 60%, 70% or 80%.

For example, in one example, as shown in Figure 1, the airtight container 100 is cylindrical, and the top bonding portion 102 is arranged on the side surface of the top 101, and the cylindrical part of the airtight container 100 is a quadrangular prism whose outer contour is a cuboid .

For example, when the sealed container 100 is heated and the temperature of the sealed container 100 reaches a first preset temperature, the top bonding part 102 is configured to be separated from the top 101 . For example, FIG. 7 is a schematic diagram of the top bonding part and the top provided by an embodiment of the present disclosure in a separated state. As shown in FIG. The portion of 106 is first separated from the top 101, and then with further heating, the top bond 102 gradually lifts to make the top bond 102 separate from the top 101 and connect only at the trace line 106 to form the top bond 102 shown in FIG. state diagram.

For example, as shown in Figure 7, the top bonding portion 102 is arranged on the side surface of the top 101, and the top bonding portion 102 is provided on both side surfaces of the top 101 (one of which is not shown due to occlusion), that is, the The airtight container 100 includes two top bonding parts 102 , of which only one top bonding part 102 is separated from the top 101 , and only the one top bonding part 102 is provided with an auxiliary separating part 105 . Compared with the situation where the auxiliary separation member 105 is provided on both top bonding parts 102, when only one top bonding part 102 is provided with the auxiliary separation part 105, it is more conducive to forming a pressure relief opening at the top seal, thereby more Facilitate the subsequent pressure relief process.

It should be noted that, it is also possible that the two top adhesive parts 102 located on both sides of the top of the airtight container 100 are separated from the top 101 .

For example, the airtight container 100 may also include a bottom and a bottom bonding part, the bottom bonding part is connected to the bottom, and no auxiliary separation part is provided on the bottom bonding part, and the positional relationship between the bottom and the bottom bonding part can be Refer to the connection relationship between the top and the top bonding part mentioned above, and details will not be repeated here.

For example, the sealed container 100 further includes a top seal and a bottom seal, the seal strength of the top seal is smaller than that of the bottom seal, so that when a pressure relief opening needs to be formed, the pressure relief opening is formed on the top seal .

For example, in one example, the auxiliary separating part 105 includes ink, the outer surface of the sealed container 100 is provided with a decorative pattern 108, and the decorative pattern 108 has at least one color that is the same as the auxiliary separating part 105, that is, it can only be on the top 101 The outer surface of the top is provided with a decorative pattern 108, and the outer surface of the top bonding part 102 can also be provided with a decorative pattern 108, and the outer surface of the top 101 and the outer surface of the top bonding part 102 can also be provided with a decorative pattern 108 .

For example, as shown in Figure 7, the outer surface of the top 101 is provided with a decorative pattern 108, the decorative pattern 108 has at least one color and the same as the auxiliary separation part 105, for example, the decorative pattern 108 and the auxiliary separation part 105 are all printed with red ink Formed, or the decorative pattern 108 and the auxiliary separating part 105 are formed by printing with green ink. The decorative pattern 108 and the auxiliary separating part 105 are formed using the same material and in the same process step, which can realize the formation of the auxiliary separating part 105 without increasing the types of raw materials or increasing the process steps, thereby saving production cost. In addition, since different raw materials need to be applied using different equipment or components, the decorative pattern 108 and the auxiliary separation component 105 are formed using the same material and in the same process step, which also saves equipment costs.

For example, inks of different colors may be printed onto the outer surface of the top 101 by flexographic printing, and after each printing step is completed, the applied inks are dried to form the decorative pattern 108 . For example, ink of one of the colors is printed on the first region 103 of the top 101, and the auxiliary separating member 105 can be formed after the ink is dried.

For example, in the case where the auxiliary separating part 105 includes ink, the outer surface of the top bonding part 102 may also be provided with a decorative pattern 108, and the decorative pattern 108 on the top bonding part 102 and the auxiliary separating part 105 are arranged in the same layer, and The decorative pattern 108 on the top bonding part 102 has at least one color and is the same as the auxiliary separation part. For the above-mentioned solution, the decorative pattern 108 on the top 101 and the auxiliary separation part 105 are arranged on the same layer and have at least one color and the auxiliary separation part. Relevant descriptions of the same solution as 105 will not be repeated here.

For example, the auxiliary separating part 105 includes ink, and at least one of the outer surface of the top 101 and the outer surface of the top bonding part 102 is provided with a decorative pattern 108, and the decorative pattern 108 has at least one color that is the same as the auxiliary separating part 105. In some cases, an adhesive is also interposed between the first region 103 and the top bonding portion 102 to bond the first region 103 and the top bonding portion 102 to each other, and the bonding agent overlaps with the auxiliary separation member 105 or Not overlapping, for example, the adhesive and the auxiliary separating member 105 may partially overlap. For example, the adhesive can be common glue. The adhesive can ensure the reliability of bonding between the first region 103 and the top bonding part 102 .

It should be noted that the outer surface of the top 101 refers to the surface of the top 101 that is exposed to the environment, and the outer surface of the top bonding part 102 refers to the surface of the top bonding part 102 that is exposed to the environment. Top 101 and top bond 102 are surfaces exposed to the environment either before bonding or after separation.

For example, in another example, the auxiliary separating member 105 includes a first adhesive, the first region 103 and the top bonding portion 102 are bonded to each other by the first adhesive, and the softening after the first adhesive is cured The temperature is 40°C-70°C. Further, the softening temperature of the first adhesive after curing is 55°C-65°C.

For example, the first adhesive is a commercially available Dow brand model DOWSIL ^™ 7657 silicone pressure-sensitive adhesive, the first adhesive is bonding the first region 103 and the top bonding portion 102 The external pressure is 2.5x104Pa.

For example, when the softening temperature of the first adhesive after curing is lower than 40° C., the bonding force between the top 101 and the top bonding part 102 is poor, and the top 101 and the top bonding part 102 are also not heated. It is easy to separate easily, which will affect the quality of the sealed container. When the softening temperature of the first adhesive after curing is higher than 70°C, it is difficult to separate the top 101 and the top bonding part 102 even under heated conditions, and no pressure relief opening will be formed, which will easily cause the sealed container 100 to be damaged. A phenomenon in which the contents of the sealed container 100 burst or splash when heated.

For example, in another example, the auxiliary separating member 105 includes a first adhesive, and a second adhesive is interposed between the first area 103 and the top adhesive part 102, and the first area 103 and the top adhesive The joints 102 are bonded to each other by the first adhesive and the second adhesive, and the softening temperature of the first adhesive after curing is lower than the softening temperature of the second adhesive after curing.

For example, the first region 103 and the top bonding portion 102 ensure the stability of the bonding between the top 101 and the top bonding portion 102 through the common bonding action of the first adhesive and the second adhesive, so that the sealed container The 100 can maintain a stable sealed state during transportation, transfer or extrusion, thereby ensuring that the quality of its contents is not damaged. A first adhesive and a second adhesive are arranged between the first region 103 and the top adhesive part 102, and the softening temperature of the first adhesive after curing is lower than the softening temperature of the second adhesive after curing. The parts of the first region 103 and the top bonding part 102 that are bonded by the first adhesive can be more easily separated from each other, that is, the first region 103 and the top bonding part 102 can be separated from each other with respect to only the second adhesive. In the case of bonding without using the first adhesive to bond the first region 103 and the top bonding portion 102, the first adhesive acts to weaken the bonding force between the first region 103 and the top bonding portion 102 role.

For example, the first adhesive is a commercially available Dow brand model DOWSIL ^™ 7657 silicone pressure-sensitive adhesive, the first adhesive is bonding the first region 103 and the top bonding portion 102 The external pressure is 2.5x 104Pa. The second adhesive can be common glue.

For example, when the temperature of the sealed container 100 reaches the second preset temperature, the sealed container 100 is configured to form a pressure relief opening configured to communicate the inside of the sealed container 100 to the external environment, so that the airtight container 100 Gas (including residual gas during packaging and water vapor formed during heating) is discharged to reduce the pressure difference inside and outside the sealed container 100, thereby preventing the sealed container 100 from bursting or the contents in the sealed container from splashing.

For example, the pressure relief opening may be a slit or a through hole with a certain size. For example, the pressure relief opening may be formed in the top sealing area, which is not limited by the embodiments of the present disclosure.

For example, the first preset temperature is less than or equal to the second preset temperature. The first preset temperature may be 40°C˜55°C, specifically 40°C, 45°C, 50°C or 55°C. The second preset temperature may be 55°C-70°C, specifically 55°C, 60°C, 65°C or 70°C.

For example, the sealed container 100 also has a burst temperature, the first preset temperature and the second preset temperature are lower than the burst temperature of the sealed container, so that the pressure relief opening is formed before the sealed container reaches its burst temperature to reduce The pressure difference between the sealed container and the external environment, preventing the sealed container from exploding or preventing the contents of the sealed container from splashing.

For example, FIG. 8A is a schematic plan view of the bottom of a sealed container according to an embodiment of the present disclosure, and FIG. 8A' is a schematic cross-sectional view of the bottom of the sealed container in FIG. 8A along the line OO', as shown in FIGS. As shown in Fig. 8A', the part of the middle area of the bottom 107 of the airtight container is recessed toward the side close to the top, all the peripheral edges are in the same plane, and when the bottom of the airtight container is placed on a horizontal surface or a substantially horizontal surface , the airtight container can maintain a stable state.

For example, FIG. 8B is a schematic plan view of the bottom of another sealed container provided by an embodiment of the present disclosure, and FIG. 8B' is a schematic cross-sectional view of the bottom of the sealed container in FIG. 8B along the OO' line, as shown in FIG. 8B As shown in FIG. 8B', the part of the middle region of the bottom 107 is located on the same plane relative to the top, and the parts on the opposite sides of the outer peripheral edge have superimposed parts on the side away from the top surface of the top, for example, the parts of the superimposed parts The plane shape is triangular.

For example, FIG. 8C is a schematic plan view of the bottom of another sealed container provided by an embodiment of the present disclosure, and FIG. 8C' is a schematic cross-sectional view of the bottom of the sealed container in FIG. 8C along the OO' line, as shown in FIG. 8C As shown in FIG. 8C ′, the bottom 107 is formed by crimping two planes. Since the thickness of the crimped planes is very thin, the thickness of the crimped planes is ignored, and the bottom 107 can be considered as a structure located on the same plane.

The specific structure of the bottom of the airtight container 100 in the embodiment of the present disclosure is not limited to the structure shown in FIGS. When it is on the surface, it is enough to keep the airtight container in a stable state and not topple over.

For example, as shown in Figure 1, the sealed container also includes a content 111, the content 111 includes food, and the material that can be regarded as food is any solid (partial gas can be volatilized when heated) or liquid for human consumption food, or food intended for animal consumption. For example, foods that are in a liquid state above 8°C include dairy products, soups, sauces, and non-carbonated beverages. Before sealing the food in the airtight container, the food and the container to be filled with the food are sterilized separately, for example, the sterilizing treatment includes methods such as hydrogen peroxide sterilization, ultraviolet radiation sterilization, pasteurization or autoclaving.

For example, a hole 110 with a covering layer for taking out the contents is also provided on the top surface of the top of the sealed container, and the taking of the contents is realized by at least partially destroying the covering layer. For example, the covered hole 110 can have any shape of a straw or a closure, such as a lid, for passage of a straw or protected by a closure so that the covering is not mechanically damaged during transport. For example, the planar shape of the hole with the covering layer includes circle, square, rectangle, ellipse or drop shape and the like.

For example, the disruption of the covering may be achieved using an opening aid comprising a straw. For example, the process of breaking the cover includes placing the straw vertically directly above the cover and then advancing the straw through the cover.

For example, when performing a horizontal compression test on the airtight container 100, the instrument used is a tension meter TIRA28025.

For example, the stage of sample preparation includes: the number of each sample to be tested is 30, and the filled sealed container is placed under standard climate conditions (23°C ± 1°C, 50% ± 5% relative humidity) Equilibrate for at least 24 hours.

For example, the working principle of a horizontal compression test is: separate the two top bonding parts of a prepared sealed container from the top, and then place the sealed container flat on the support plate at the lower part of the instrument, that is, the sealed container does not The side bonded by the top adhesive part is in contact with the support plate, and the pressure plate on the upper part of the instrument is used to apply pressure to the sealed container. As the pressure is applied for longer and longer, when the contents of the sealed container leak, the point of leakage is determined. It is located in the specific position of the sealed container, and determines the size of the sealing strength of the sealed container.

The steps of the horizontal compression test include: open the EDC controller and TIRA tensile test software, the range of the pressure sensor selected for the horizontal compression test is 1000N, the selection standard is that the test result is 20% to 80% of the test range, check the equipment sensor and whether the upper pressure plate and lower support plate of the instrument are normal, place the sealed container flat on the lower support plate of the instrument so that the side of the sealed container that is not bonded to the top adhesive part is in contact with the support plate, and then follow the operation steps prompted by the software Carry out the test, the movement speed of the upper platen in the test is 10mm/min, you can choose to stop the test of this sample when the pressure value of the horizontal compression test is reduced by about 30%, and proceed to the test of the next sample.

For example, the test conditions can be changed to test the next sample, for example, the selected pressure value of the horizontal compression test can be reduced by about 30%, or the clamp can be moved downward, and the time for applying pressure can be changed.

For example, by setting auxiliary separating parts at the positions corresponding to the two top bonding parts of the sealed container, or not setting auxiliary separating parts on the sealed container, or only setting auxiliary separating parts in the area corresponding to one of the top bonding parts of the sealed container. Separate components for testing.

Find according to test result: the position that finally leaks all is the top surface of the top of sealed container, and possible reason is that the sealing strength of the top surface of the top is less than the sealing strength of the bottom surface of the bottom. And usually the bottom is activated by hot air and then sealed, and the top is activated by ultrasonic waves and then sealed, that is, the activation methods of the top and bottom are different. The sealing structure of the top is different from the sealing structure of the bottom. Usually the top is sealed by folding the top bonding part, that is, the top has ear wings, and the bottom is sealed by superimposing two planes. without ear fins.

For example, each sample can also be tested for the pressure release ratio based on 50 samples. By adjusting the width of the top seal and the heating time, the number of samples with pressure release can be obtained, and then the pressure release percentage can be calculated.

For example, take 50 samples of each of two samples A and B, no auxiliary separation parts are set between the top bonding part and the top of samples A and B, the width of the top bonding part of sample A is set to 1.0mm, and the heated The time was set to 110 min, the width of the top bonding part of sample B was set to 1.5 mm, and the heating time was set to 111 min. It is found that the number of samples with pressure relief in sample A is 30, that is, the proportion of pressure relief in sample A is 60%, and the number of samples with pressure relief in sample B is 40, that is, the proportion of pressure relief in sample B is 40. The ratio of pressure relief is 80%.

Then, take 50 of each of the two samples A and B, set an auxiliary separation part between a top bonding part of sample A and the top, set the width of the top bonding part of sample A to 1.0 mm, and heat the time It is set to 107min, and it is found that the number of samples with pressure release in sample A is 50, that is, the proportion of sample A with pressure release is 100%. An auxiliary separation part is set between a top bonding part of sample B and the top, the width of the top bonding part of sample B is set to 1.5mm, and the heating time is set to 107min. The number of samples is 50, that is, the rate of pressure release in sample A is 100%.

According to the test results, it is found that under the same conditions, it is easier to arrange the auxiliary separating part between one top bonding part and the top than the case of setting the auxiliary separating part between the two top bonding parts and the top A depressurization occurs.

To sum up, the sealed container provided by the above-mentioned embodiments of the present disclosure weakens the adhesive force between the top and the top bonding portion, so that the top and the top bonding portion are separated when the temperature of the sealed container reaches the first preset temperature during heating. , and then the sealed container forms a pressure relief opening, so that the gas in the sealed container is discharged to reduce the pressure difference between the inside and outside of the sealed container, thereby preventing the sealed container from bursting or the contents from splashing.

For example, at least one embodiment of the present disclosure further provides a sheet-like composite material, the sheet-like composite material includes a first surface and a second surface, and includes a first composite region and a second composite region, wherein the first composite region includes The first heat-sealing layer, the support layer and the second heat-sealing layer are stacked sequentially from the first surface to the second surface; layer, a support layer and a second heat-sealing layer, and the material of the auxiliary separation member is different from that of the first heat-sealing layer, and the sheet-like composite material also includes two first boundary edges parallel to the longitudinal direction and two first boundary edges parallel to the transverse direction Two second boundary edges, the longitudinal direction and the transverse direction are orthogonal; the sheet composite material also includes a bottom transverse crease line and a top transverse crease line, the bottom transverse crease line and the top transverse crease line divide the sheet composite material are: a bottom region comprising a bottom crease pattern; a top region comprising a top crease pattern; and a middle region between the bottom transverse crease line and the top transverse crease line and located relative to the longitudinal direction between the bottom region and Between the top region; the top transverse crease line comprising: a top central portion; at least one top portion disposed on one side of the top central portion and adjacent to one of the first border edges; and at least one top side portion adjacent to one side of the top central portion and extending between the top central portion and at least one top end portion; the top crease pattern comprising at least one pair of oblique crease lines skewed relative to both the longitudinal and transverse directions and within the top region extending; wherein the oblique crease line has a first end pointing toward one of the second border edges and a second end pointing toward a continuous line parallel to the transverse direction and including the top transverse crease line The top central portion and at least one top portion; the inclined crease line together with the at least one top side portion defines a flap region of the sheet-like composite material, the flap region being designed to form at least a portion of the top bond; wherein the top fold The crease pattern also includes at least one pair of longitudinal crease lines extending within the top region, disposed on opposite sides of the flap region with respect to the transverse direction, and together defining a fold line; the top region comprising a first region, the flap region and The top region is connected, wherein the first region and the flap region are arranged to be bondable to each other and can be completely overlapped, and an auxiliary separation member is provided in at least one of the first region and the flap region, and the auxiliary separation member is provided The flap region and/or the first region corresponds to the second composite region.

For example, FIG. 9A is a schematic plan view of a sheet-like composite material provided by an embodiment of the present disclosure, and FIG. 9B is a schematic cross-sectional view of the sheet-like composite material in FIG. 9A cut along the AA' line, as shown in FIG. 9A As shown in Figure 9B, the basic unit of the sheet-like composite material 01 is a rectangular structure, which includes a first surface 02 and a second surface 03, and includes a first composite region 04 and a second composite region 05, wherein the first composite Area 04 includes a first heat-sealing layer 06, a support layer 07 and a second heat-sealing layer 08 stacked in sequence from the first surface 02 to the second surface 03; the second composite area 05 includes The auxiliary separating component 09 , the first heat-sealing layer 06 , the support layer 07 and the second heat-sealing layer 08 are stacked in sequence, and the material of the auxiliary separating component 09 is different from that of the first heat-sealing layer 06 .

For example, the supporting layer 07 is a base layer with rigidity, such as a paper base layer.

For example, the sheet-like composite material 01 also includes two first boundary edges (011, 012) parallel to the longitudinal direction (the extension direction of the y-axis) and two second border edges (011, 012) parallel to the transverse direction (the extension direction of the x-axis). For the boundary edge (013, 014), the longitudinal direction (the direction in which the y-axis extends) and the transverse direction (the direction in which the x-axis extends) are orthogonal.

For example, the longitudinal direction (direction of extension of the y-axis) is the direction of the overall height of the subsequently formed container precursor, "overall height" referring to the height of the container precursor having a constant height or the maximum height of the container precursor having a variable height. high.

For example, the sheet-like composite material 01 further includes a bottom transverse crease line 015 and a top transverse crease line 016, and the bottom transverse crease line 015 and the top transverse crease line 016 divide the sheet-like composite material 01 into a bottom area 017, which comprising a bottom crease pattern 018; a top region 019 comprising a top crease pattern 021; and an intermediate region 022 between the bottom transverse crease line 015 and the top transverse crease line 016 and relative to the longitudinal direction (y-axis direction of extension) between the bottom region 017 and the top region 019; the top transverse crease line 016 comprising: a top central portion 016a; at least one top end portion 016b disposed on one side of the top central portion 016a and adjacent to the first border edge (011,012); and at least one top side portion 016c, which is adjacent to one side of the top central portion 016a and extends between the top central portion 016a and the at least one top portion 016b; the top crease pattern 021 includes at least one For oblique crease lines (026a, 026b), which are oblique with respect to both the longitudinal direction (the direction in which the y-axis extends) and the transverse direction (the direction in which the x-axis extends) and extend within the top region 019; wherein the oblique crease The trace line has a first end pointing towards the second boundary edge 013 and a second end pointing towards the continuation line CC' parallel to the transverse direction (extension of the x-axis) and comprising the top transverse fold The top central portion 016a of the score line 016 and at least one top portion 016b.

For example, the top region 019 includes a top crease pattern 021 and is configured as the top portion of the container precursor, the top portion including a top panel, either a flat and horizontal top panel with a quadrilateral profile, or a sloped top panel.

For example, this intermediate region 022 is designed to form the main part of a container precursor having side walls.

For example, bottom region 017 includes bottom crease pattern 018 and is configured as a bottom portion of the container precursor that includes a floor that is a flat and horizontal floor that has a quadrilateral profile and defines a resting surface for the container precursor.

For example, the top transverse crease line 016 extends parallel to the second border edge (013, 014), the top transverse crease line 016 is arranged closer to the top border edge (second border edge 013) than the bottom transverse crease line 015, and A top peripheral edge of the container precursor is configured to define a main portion from a top portion.

For example, the top transverse crease line 016 includes a top central portion 016a configured to define the top front edge of the container precursor; two top end portions 016b are disposed on opposite sides of the top central portion 016a at respective first border edges (011 , 012) near and configured to define the top rear edge of the container precursor; and two top side portions 016c extending adjacent to opposite sides of the top central portion 016a, each top side portion 016c connecting the top central portion 016a to a corresponding and designed to define two corresponding top edges of the container precursor.

For example, the bottom transverse crease line 015 extends parallel to the second border edge (013, 014) and is arranged closer to the bottom border edge (second border edge 014) than the top transverse crease line 016. The bottom transverse crease line 015 is configured to define a bottom peripheral edge of the container precursor separating the main portion from the bottom portion.

For example, the bottom transverse crease line 015 includes a bottom central portion 015a configured to define the bottom front edge of the container precursor; two bottom end portions 015b disposed on opposite sides of the bottom central portion 015a at the first boundary Near the edge (011,012) and configured to define the bottom rear edge of the container precursor, and two bottom side portions 015c, adjacent to the opposite sides of the bottom central portion 015a, each bottom side portion 015c is between the bottom central portion 015a and one Respective bottom end portions 015b extend therebetween and are designed to define two respective bottom side edges of the container precursor.

For example, the sheet-like composite material 01 comprises two further transverse crease lines, namely a further top transverse crease line 023 and a further bottom transverse crease line 024, both parallel to the transverse direction (extension of the x-axis). ) extend and are located near the top boundary edge (second boundary edge 013) and the bottom boundary edge (second boundary edge 014), respectively. The further top transverse crease line 023 and the top border edge (second border edge 013 ) define respective top transverse seal regions configured to define respective top transverse seal zones of the container precursor. The additional bottom transverse crease line 024 and the bottom border edge (second border edge 014 ) define respective bottom transverse seal regions configured to define respective bottom transverse seal zones of the container precursor.

For example, the inclined crease lines (026a, 026b) together with the at least one top side portion 016c define a flap region 027 of the sheet-like composite material 01 designed to form at least a part of the top bond.

For example, a pair of inclined crease lines (026a, 026b), which are inclined with respect to both the longitudinal direction (direction of extension of the y-axis) and the transverse direction (direction of extension of the x-axis) and extending within the top region 019, for example, Extends between the top transverse crease line 016 and a further top transverse crease line 023 .

For example, a pair of oblique crease lines (026a, 026b) have a common end and opposite ends, the common end lies on the other top transverse crease line 023, and the opposite end points parallel to the transverse The continuous line CC' in the direction (extension direction of the x-axis). For example, the fin area 027 is a substantially triangular area.

For example, in one example, top central portion 016a, top end portion 016b, and top side portion 016c of top transverse crease line 016 are aligned with each other and with continuation line C-C'.

For example, the top crease pattern 021 further comprises at least one pair of longitudinal crease lines (028a, 028b), eg two pairs of longitudinal crease lines (028a, 028b), extending within the top region 019 relative to the transverse direction (x The direction of extension of the axis) is arranged on the opposite side of the flap area 027, and together define a fold line; the top area 019 includes a first area, and the flap area 027 is connected with the top area 019, wherein the first area and the flap area 027 Set to be bondable to each other and fully overlapping.

For example, the longitudinal crease line 028b is the innermost crease line, and the longitudinal crease lines 028b are respectively located near the opposite first border edges (011, 012); the area between the longitudinal crease lines 028b and the The area bounded by the line 028b and the respective first border edge (011, 012) is configured to define a top panel of the container precursor.

For example, the bottom region 017 may or may not have a fin region. When the bottom region 017 has a fin region, please refer to the relevant description that the top region 019 has a fin region 027 , which will not be repeated here.

For example, in conjunction with FIG. 9A and FIG. 9B , at least one of the first area and the flap area 027 is provided with an auxiliary separation member 09, and the flap area 027 and/or the first area where the auxiliary separation member 09 is provided corresponds to the second Composite area 05. For example, the first composite region 04 and the second composite region 05 are connected as a whole, and the material of the auxiliary separation component 09 is different from that of the first heat-sealing layer 06 . When the sheet-like composite material 01 is folded along the trace line into a container precursor, the second composite region 05 corresponds to the region where the top bond is subsequently formed or the first region of the top.

For example, in one example, in the first composite region 04, a decorative pattern (not shown in FIG. Has a color and the same as the auxiliary separation part 09.

For example, the first heat-sealing layer 06 is the surface in direct contact with the external environment, and the second heat-sealing layer 08 is the surface in contact with the content to be contained in the container precursor.

For example, the material of the first heat-sealing layer 06 may be polyolefin.

For example, polyolefin refers to the individual polymerization or A general term for a class of thermoplastic resins obtained by copolymerization.

For example, the polyolefin includes polyethylene or polypropylene. The polyethylene is, for example, high-density polyethylene (HDPE), medium-density polyethylene (MDPE), low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), very low-density polyethylene (VLDPE) or polyethylene ( PE) etc.

For example, the material of the second heat-sealing layer 08 may also be polyolefin.

For example, the sheet-like composite material 10 is in a state before the container precursor of the subsequently formed sealed container is formed, and the sheet-like composite material 10 has crease lines along which the sheet-like composite material 10 can be formed. Structures such as the top, top bonding portion, and bottom of the sealed container.

For example, at least one embodiment of the present disclosure also provides a container precursor, which includes the sheet-like composite material in any of the above-mentioned embodiments and a longitudinal seam, where the longitudinal seam connects the two sides of the sheet-like composite material. The two first boundary edges are connected to form a surrounding container precursor.

For example, FIG. 10 is a schematic three-dimensional structure diagram of a container precursor formed by using the sheet-shaped composite material in FIG. 9A provided by an embodiment of the present disclosure. As shown in FIG. The two first boundary edges (011, 012) of the composite material are connected to form a container precursor 200 surrounding all around. 201 has an open end 2011, and the top 201 has an opening 2011a at the open end 2011. The top bonding part 202 is arranged on the open end 2011 of the top 201, and the straight cylindrical container precursor 200 is folded according to the crease shown by the dotted line. , put the content in the container precursor, and seal the top and bottom, after bonding the top 201 and the top bonding part, it can be formed into the structure of the sealed container 100 shown in FIG. 1 .

For example, in one example, referring to FIG. 9A , FIG. 9B and FIG. 10 , the auxiliary separating member 09 is exposed to the external environment or covered by a release film that is detachable from the auxiliary separating member 09 . For example, when the auxiliary separation component 09 is covered by a release film that is separable from the auxiliary separation component 09 , it can be ensured that the auxiliary separation component 09 has a certain degree of viscosity, and the release film can be torn off when the auxiliary separation component 09 needs to be used.

For example, the auxiliary separating part 09 includes ink; at least one of the outer surface of the top area 019 and the outer surface of the flap area 027 is provided with a decorative pattern 208 , and the decorative pattern 208 has at least one color same as that of the auxiliary separating part 09 . For example, both the decoration pattern 208 and the auxiliary separation component 09 are printed with red ink, or both the decoration pattern 208 and the auxiliary separation component 09 are printed with green ink. The decorative pattern 208 and the auxiliary separating part 09 are formed using the same material and in the same process step, which can realize the formation of the auxiliary separating part 09 without increasing the types of raw materials or increasing the process steps, thereby saving production cost. In addition, since different raw materials need to be applied using different equipment or components, the decorative pattern 208 and the auxiliary separation component 09 are formed using the same material and in the same process step, which also saves equipment costs. For example, inks of different colors are printed onto the outer surface of the top of the sealed container by flexographic printing, and after each printing step is completed, the applied inks are dried to form the decorative pattern 208 . For example, one of the colors of ink is printed on the first area of the top 201 , and the auxiliary separating member 09 can be formed after the ink is dried.

For example, the auxiliary separation component 09 includes a first adhesive, and the softening temperature of the first adhesive is 40°C-70°C. For example, the softening temperature of the first binder is 55°C-65°C.

For example, the first adhesive is a commercially available Dow brand model DOWSIL ^™ 7657 silicone pressure-sensitive adhesive, the first adhesive is applied to the first area and the flap area (corresponding to the top bond). Part) when bonding, the external pressure is 2.5x 104Pa.

For example, when the softening temperature of the first adhesive is lower than 40°C, after the subsequent bonding of the top 201 and the flap region 027 (corresponding to the top bonding portion), the bonding between the top 201 and the top bonding portion The force is poor, and the top 201 and the top adhesive part are easily separated without heating, thereby affecting the quality of the subsequently formed sealed container. When the softening temperature of the first adhesive is higher than 70°C, it is difficult to separate the top 201 and the top adhesive part even under heating conditions, and no pressure relief opening will be formed, which will easily cause the subsequently formed sealed container to be heated. The phenomenon of bursting or splashing of the contents of the sealed container during the process.

For example, the auxiliary separating part 09 includes a first adhesive, at least one of the first region and the flap region 027 is also provided with a second adhesive, and the softening temperature of the first adhesive is lower than that of the second adhesive. softening temperature. For example, when the sealed container is subsequently formed, the first region and the flap region 027 (corresponding to the top bonding part) can be jointly bonded by the first adhesive and the second adhesive to ensure that the top 201 and the flap The stability of the bond between the area 027 (corresponding to the top bonding part) enables the sealed container to be formed to maintain a stable sealed state during transportation, transfer or extrusion, thereby ensuring that the quality of its contents is not damaged .

For example, the sealed container to be formed has a first adhesive and a second adhesive between the first area and the flap area 027 (corresponding to the top adhesive), and the softening temperature of the first adhesive is lower than that of the second adhesive. The softening temperatures of the two adhesives may allow the portions of the first region and the tab region 027 (corresponding to the top bond) bonded by the first adhesive to be more easily separated from each other. That is, compared to only using the second adhesive to bond the first region and the flap region 027 (corresponding to the top bonding portion) without using the first adhesive to bond the first region and the flap region 027 (corresponding to the top bonding portion). In the case of bonding the first region and the flap region 027 (corresponding to the top bonding portion), when the sealed container is subsequently formed, the first adhesive acts to weaken the bonding force when subsequently bonding the first region and the flap region 027 (corresponding to the top bonding portion).

For example, FIG. 11 is a schematic perspective view of a three-dimensional structure of a container precursor provided by an embodiment of the present disclosure. As shown in FIG. 11 , the container precursor is a precursor produced in the process of manufacturing a sealed container. Including: a top 201 and a top bonding part 202, the top 201 includes a top surface and a side surface above about half the height of the container precursor 200, and includes a first region 203, the top bonding part 202 is connected to the top 201 , the first region 203 and the top bonding portion 202 are set to be bondable to each other and can be completely overlapped, the container precursor 200 also includes an auxiliary separation member 205, in FIG. In the area 203, no auxiliary separation member 205 is provided in the top adhesive part 202, and the container precursor 200 includes a composite layer, which includes an inner heat-sealing layer, a supporting layer, and a space away from the container precursor stacked in sequence. For the outer heat-sealing layer, the material of the auxiliary separation component 205 is different from that of the outer heat-sealing layer. In this case, the auxiliary separating member 205 can be separately and flexibly provided, which contributes to convenient realization of the container precursor according to the embodiment of the present disclosure.

For example, the outer contour shape of the container precursor 200 shown in FIG. 11 is roughly a cuboid. Embodiments of the present disclosure are not limited thereto. 6 polyhedra etc.

It should be noted that the top 201 may be all or part of the cross-section above the middle position of the cylindrical part of the entire container precursor. For example, the top 201 can be a part of the upper end and the top of a rectangular side surface of the cuboid in Figure 11; the top 201 can also be all or part of the top surface of the cuboid in Figure 11; A part of the upper end of a rectangular side surface of the cuboid, the embodiment of the present disclosure is not limited thereto, but does not include the top bonding portion 202, as long as the top 201 includes the top surface and the height of the container precursor 200 is more than half of the height. side surface.

Embodiments of the present disclosure are not limited to disposing the auxiliary separating member 205 in the first region 203, the auxiliary separating member 205 may also be arranged in the first region 203 and the top bonding portion 202, or the auxiliary separating member 205 may also be Only provided in the top bond 202 .

For example, in another example, when the material of the outer heat-sealing layer is polyolefin, an auxiliary separating member 205 is provided in both the first region 203 and the top bonding portion 202, and when the top bonding portion 202 is connected with When the material of the overlapping surface of the first region 203 and the material of the top 201 corresponding to the first region 203 are both polyolefin, the material of the auxiliary separation member 205 is different from the material of the surface of the first region 201 that is in contact with the auxiliary separation member 205 , and the material of the auxiliary separation member 205 is also different from the material of the surface of the top adhesive part 202 that is in contact with the auxiliary separation member 205 .

For example, in yet another example, when the material of the outer heat-sealing layer is polyolefin, the material of the surface overlapping with the first region 203 of the top adhesive part 202 is polyolefin, and the auxiliary separating member 205 is only arranged on In the top bonding part 202 , no auxiliary separating part 205 is provided in the first region 203 , and the material of the auxiliary separating part 205 is different from that of the surface of the top bonding part 202 that is in contact with the auxiliary separating part 205 .

For example, when the container precursor 200 is sealed, the auxiliary separating member 205 functions to weaken the adhesive force between the first region 203 and the top bonding portion 202 .

For example, the auxiliary separation member 205 is exposed to the external environment or the auxiliary separation member 205 is covered with a release film detachable from the auxiliary separation member 205 . In FIG. 11, the auxiliary separation member 205 is exposed to the external environment. For example, when the auxiliary separation component 205 is covered by a release film that can be separated from the auxiliary separation component 205, it can be ensured that the auxiliary separation component 205 has a certain viscosity, and the release film can be torn off when the auxiliary separation component 205 needs to be used.

For example, the auxiliary separating part 205 includes ink, and at least one of the outer surface of the top 201 and the top bonding part 202 is provided with a decorative pattern 208 , and the decorative pattern 208 has at least one color that is the same as the auxiliary separating part 205 .

For example, as shown in FIG. 11 , the decorative pattern 208 has at least one color that is the same as that of the auxiliary separation member 205 . For example, both the decoration pattern 208 and the auxiliary separation part 205 are printed with red ink, or both the decoration pattern 208 and the auxiliary separation part 205 are printed with green ink. The decorative pattern 208 and the auxiliary separation component 205 are formed using the same material and in the same process step, which can realize the formation of the auxiliary separation component 205 without increasing the types of raw materials or increasing the process steps, thereby saving production costs. In addition, since different raw materials need to be applied using different equipment or components, the decorative pattern 208 and the auxiliary separation component 205 are formed using the same material and in the same process step, which also saves equipment costs.

For example, inks of different colors are printed onto the outer surface of the top of the sealed container by flexographic printing, and after each printing step is completed, the applied inks are dried to form the decorative pattern 208 . For example, ink of one of the colors is printed on the first region 203 of the top 201 , and the auxiliary separating member 205 can be formed after the ink is dried.

For example, the auxiliary separating part 205 includes ink, and at least one of the outer surface of the top 201 and the outer surface of the top bonding part 202 is provided with a decorative pattern 208, and the decorative pattern 208 has at least one color that is the same as the auxiliary separating part 205. In some cases, at least one of the first region 203 and the top bonding portion 202 is also provided with an adhesive so as to bond the first region 203 and the top bonding portion 202 to each other and make them completely overlap when the sealed container is subsequently formed. , the adhesive overlaps with the auxiliary separating member 205 or does not overlap, for example, the adhesive and the auxiliary separating member 205 may partially overlap. For example, the adhesive can be common glue, which can ensure the reliability of the bonding between the first region 203 and the top bonding part 202 .

For example, the auxiliary separating part 205 includes ink, the outer surface of the top bonding part 202 is provided with a decorative pattern 208, and the decorative pattern 208 on the top bonding part 202 has at least one color and the same scheme as the auxiliary separating part 205 can be found in The above-mentioned decorative pattern 208 on the top 201 has at least one color that is the same as the related description of the auxiliary separation component 205 , which will not be repeated here.

It should be noted that the outer surface of the top 201 refers to the surface of the top 201 exposed to the environment, and the outer surface of the top adhesive part 202 refers to the surface of the top adhesive part 202 exposed to the environment.

For example, in another example, the auxiliary separation component 205 includes a first adhesive, and the softening temperature of the first adhesive is 40°C-70°C, for example, the softening temperature of the first adhesive is 55°C -65°C.

For example, the first adhesive is a commercially available Dow brand model DOWSIL ^™ 7657 silicone pressure-sensitive adhesive, the first adhesive is bonding the first region 103 and the top bonding portion 202 The external pressure is 2.5x 104Pa.

For example, when the softening temperature of the first adhesive is lower than 40°C, after the top 201 and the top bonding part 202 are bonded subsequently, the bonding force between the top 201 and the top bonding part 202 is poor, and the top 201 And the top adhesive part 202 is also easy to be easily separated without heating, thereby affecting the quality of the subsequently formed sealed container. When the softening temperature of the first adhesive is higher than 70°C, the top 201 and the top adhesive part 202 are difficult to separate even under the condition of heating, and no pressure relief opening will be formed, which will easily cause the subsequently formed sealed container to be damaged. Explosion or splashing of the contents of a sealed container during heating.

For example, in another example, the auxiliary separation member 205 includes a first adhesive, at least one of the first region 203 and the top adhesive portion 202 is also provided with a second adhesive, and the softening of the first adhesive The temperature is below the softening temperature of the second binder. For example, when the sealed container is subsequently formed, the first region 203 and the top bonding portion 202 can be jointly bonded by the first adhesive and the second adhesive to ensure that the sealing between the top 201 and the top bonding portion 202 is guaranteed. The stability of the bond enables the sealed container to be formed to maintain a stable sealed state during transportation, transfer or extrusion, thereby ensuring that the quality of its contents is not damaged.

For example, the sealed container to be formed has a first adhesive and a second adhesive between the first region 203 and the top adhesive 202, and the softening temperature of the first adhesive is lower than that of the second adhesive. The softening temperature may allow the portions of the first region 203 and the top bond 202 bonded by the first adhesive to be more easily separated from each other. That is, relative to the situation where only the second adhesive is used to bond the first region 203 and the top bonding portion 202 without using the first adhesive to bond the first region 203 and the top bonding portion 202, the subsequent When forming the airtight container, the first adhesive acts to weaken the bonding force of the subsequent bonding of the first region 203 and the top bonding portion 202 .

For example, as shown in FIG. 11 , there is a trace line 206 where the top adhesive portion 202 is connected to the top portion 201, along which the top adhesive portion 202 can be folded relative to the top portion 201 to allow the first region 203 to adhere to the top portion. The positions where the knots 202 are bonded to each other, in FIG. 11 , the top bonded portion 202 can be folded down with the trace line 206 as the axis so that the top bonded portion 202 approaches the first region 203, and finally the first region 203 The top bonding portion 202 is in contact with and bonded to each other, and the trace line 206 is a straight line in FIG. 11 .

For example, in FIG. 11 , the auxiliary separation member 205 is arranged in a region spaced apart from the trace line 206 of the first region 203, and the auxiliary separation member 205 is arranged at the end point of the first region 203 farthest from the trace line 206. and its adjacent areas. Disposing the auxiliary separation member 205 in the area of the first area 203 away from the trace line 206 can weaken the bonding ability of the edge area.

For example, in another example, the auxiliary separating member 205 may be disposed on a region of the top bonding portion 202 spaced apart from the trace line 206, that is, the auxiliary separating member 205 may be disposed on the top bonding portion 202 away from the trace line 206. Area.

For example, in yet another example, an auxiliary separation member 205 is provided in both the first region 203 and the top adhesive portion 202, and the auxiliary separation member 205 is in the region spaced apart from the trace line 206 of the first region 203, and in the For the area of the top adhesive part 202 that is spaced apart from the trace line 206, for details, refer to the above-mentioned relevant description of disposing the auxiliary separation member 205 in the first area 203 or the area of the top adhesive part 202 that is far away from the trace line 206. Let me repeat.

It should be noted that the area of the first region 203 away from the trace line 206 refers to the region where the first region 203 is not adjacent to the trace line 206, or the position of the end point of the first region 203 farthest from the trace line 206 or its adjoining area.

For example, in FIG. 11 , the shape of the first region 203 , the shape of the top bonding portion 202 and the planar shape of the auxiliary separating member 205 are all triangular as an example, and the embodiments of the present disclosure are not limited thereto. The shape of the first region 203, the shape of the top bonding portion 202 and the planar shape of the auxiliary separation member 205 can have different shapes, and can be triangles, pentagons, heptagons, combinations of squares and triangles, and rectangles. Combination of triangles, circles and triangles, ellipses and triangles, zigzags, or zigzags and triangles.

For example, as shown in FIG. 11 , the top bonding portion 202 is configured to be bonded to the side surface of the top 201 , which is more conducive to the subsequent filling work of the filling machine.

For example, as shown in Figure 11, the container precursor 200 includes two top bonding parts 202, the top bonding part 202 is provided on both sides of the top 201, and the two top bonding parts 202 pass through the trace line respectively. 206 is connected to the top 201 , but only on one top bonding portion 201 and/or on the first region corresponding to the one top bonding portion 201 is provided with the auxiliary separating member 205 .

For example, the container precursor 200 further includes a bottom and a bottom bonding portion, the bottom bonding portion is connected to the bottom, and the bottom bonding portion and/or the portion corresponding to the bondable bottom is not provided with an auxiliary separation component.

For example, FIG. 12 is a schematic plan view of a top bonding part 202 and an auxiliary separation component provided by an embodiment of the present disclosure. As shown in FIG. 205 is positioned spaced apart from the trace line 206 and the bottom edge of the top bond 202 coincides with the trace line 206 . The auxiliary separation component 205 is disposed on the area of the top adhesive portion 202 away from the trace line 206 , and the auxiliary separation portion 205 is disposed on the end point of the top adhesive portion 202 farthest from the trace line 206 and its adjacent area. Placing the auxiliary separation member 205 at a region of the top bond 202 away from the trace line 206 may weaken the bonding ability of the edge region after the first region 203 and the top bond 202 are bonded.

For example, the plane shape of the auxiliary separation part 205 includes a first polygon, for example, the first polygon can be a triangle, a rhombus, a pentagon, a heptagon, a combination of a square and a triangle, a combination of a rectangle and a triangle , a combination of a circle and a triangle, a combination of an ellipse and a triangle, or a zigzag, etc. For example, in FIG. 12 , the first polygon is a rhombus ABCD as an example for illustration, and the rhombus ABCD includes a first vertex angle<ABC, and the vertex B (first vertex) of the first vertex angle<ABC is an auxiliary separation The point of part 205 furthest from trace line 206 .

For example, the planar shape of the top bonding portion 202 is a second polygon, and the second polygon can be a triangle, a rhombus, a pentagon, a heptagon, a combination of a square and a triangle, a combination of a rectangle and a triangle, A combination of a circle and a triangle, an ellipse and a triangle, or a zigzag, etc.

In FIG. 12 , the second polygon is a triangle A'B'C' as an example for illustration, and the triangle A'B'C' includes a second vertex angle<A'B'C', and the second vertex angle Vertex B' (second vertex) of <A'B'C' is the point of the top bond 202 farthest from trace line 206, the first vertex angle<ABC and the second vertex angle<A'B'C' coincide. For example, with respect to the situation where the lines overlap at the edge, the end point B of the auxiliary separation member 205 that is farthest from the trace line 206 is set to coincide with the end point B' of the top bonding part 202 that is farthest from the trace line 206, and the subsequent use of this After the sealed container formed by the container precursor, the bonding ability of the edge portion at the end position can be weakened, so that the top 201 and the top bonding portion 202 can be more easily bonded at the end point B of the edge portion of the top bonding portion 202 during the heating process. 'Separate first at position. After the sealed container is formed, the top 201 and the top bonding part 202 are easily separated at the position of the end point B' of the top bonding part 202, that is, the end point B' of the top bonding part 202 can be separated from the top 201 first, so that the top The end point B′ of the bonding portion 202 is easy to warp, and due to the tensile stress, the top bonding portion 202 is more likely to be separated from the top portion 201 gradually from the end point B′ to a position close to the trace line 206 .

For example, as shown in Figure 12, the shortest distance between the first polygon (diamond ABCD) and the trace line 206 is the first distance d1, and the shortest distance between the first vertex B and the second vertex B' and the trace line 206 is the first distance d1. Two distances d2, in FIG. 12 , the first distance d1 is greater than half of the second distance d2, embodiments of the present disclosure may not be limited thereto, and the first distance d1 may also be equal to half of the second distance d2. For example, the above-mentioned first distance d1 is greater than or equal to the distance relationship of half of the second distance d2, which can ensure that the auxiliary separation member 205 is arranged on the half area or the small half area of the top bonding part 202 away from the trace line 206 (that is, in FIG. 12, all or part of the upper half region of the top bonding portion 204 shown in 12), so that after the subsequent formation of the sealed container, the top 201 and the top bonding portion 202 can be more easily separated at a region away from the trace line 206 .

For example, FIG. 13 is a schematic plan view of the top bonding part and the auxiliary separation part provided by another embodiment of the present disclosure. As shown in FIG. 13 , the first polygon is a triangle ABC, which has a first vertex angle<ABC, The side AC opposite to the first vertex angle <ABC of the first polygon ABC is the first base, the first base AC is parallel to the trace line 206, and the second polygon is the triangle A'B'C', It has a second vertex angle <A'B'C', and the side of the second polygon A'B'C' that is disposed opposite to the second vertex angle <A'B'C' is the second base edge A'C ', the second bottom edge A'C' is parallel to the trace line 206 , in another example, the second bottom edge A'C' may coincide with the trace line 206 .

For example, as shown in Figure 13, the shortest distance between the first polygon (triangle ABC) and the trace line 206 is the first distance d1, and the shortest distance between the first vertex B and the second vertex B' to the trace line 206 is the first distance d1. Two distances d2, in FIG. 13 , the first distance d1 is equal to half of the second distance d2, embodiments of the present disclosure may not be limited thereto, and the first distance d1 may also be greater than half of the second distance d2. For example, the above-mentioned first distance d1 is greater than or equal to the distance relationship of half of the second distance d2, which can ensure that the auxiliary separation member 205 is arranged on the half area or the small half area of the top bonding part 202 away from the trace line 206 (that is, in FIG. 13, all or part of the upper half region of the top bonding portion 204 shown in 13), so that after the container precursor 200 is subsequently used to form a sealed container, the top 201 and the top bonding portion 202 are more easily positioned away from the trace line 206 , and in the case where the first polygon ABC and the second polygon A'B'C' are both isosceles triangles, the area of the auxiliary separation part 205 can be made smaller than or equal to the area of the top bonding part 202 It can also ensure a sufficient bonding area between the first region 203 and the top bonding part 202, so as to ensure the airtightness of the subsequently formed airtight container.

For example, for an example of setting an auxiliary separation component on the first region, reference may be made to relevant descriptions above, which will not be repeated here.

For example, the auxiliary separation member 206 includes a plurality of dot patterns separated from each other and/or the auxiliary separation member 206 includes a grid pattern, and the relevant description of the auxiliary separation member 206 can refer to the relevant embodiment of the sealed container for FIG. 6 Relevant descriptions will not be repeated here.

For example, as shown in FIG. 11 , when the top adhesive portion 202 is folded to a position where the first area 203 and the top adhesive portion 202 are in contact with each other, the first region 203 completely overlaps the top adhesive portion 202 .

For example, as shown in FIG. 11 , the area of the auxiliary separating member 205 disposed in the first region 203 is 5%-80% of the area of the first region 203 . For example, the area of the auxiliary separating part 205 is 5%, 10%, 20%, 30%, 40%, 50%, 60%, 70% or 80% of the area of the first region 203.

For example, in another example, the auxiliary separating part 205 can be arranged on the top bonding part 202, and the area of the auxiliary separating part 205 is 5%-80% of the area of the top bonding part 202, for example, the auxiliary separating part 205 The area is 5%, 10%, 20%, 30%, 40%, 50%, 60%, 70% or 80% of the area of the top bonding portion 202 .

For example, in yet another example, the auxiliary separating member 205 can be arranged on the first region 203 and the top bonding portion 202, and the area of the auxiliary separating member 205 arranged in the first region 203 is 5% of the area of the first region 203 -80%. For example, the area of the auxiliary separating member 205 is 10%, 15%, 25%, 35%, 45%, 55%, 65%, 75% or 80% of the area of the first region 203 . The area of the auxiliary separation part 205 disposed in the top bonding part 202 is 5%-80% of the area of the top bonding part 202 . For example, the area of the auxiliary separating part 205 is 10%, 15%, 25%, 35%, 45%, 55%, 65%, 75% or 80% of the area of the top bonding part 2020 .

For example, in Fig. 11, when the first region 203 and the top bonding portion 202 are bonded but not bonded, the shape of the outer contour of the container precursor is a cuboid, and the shape of the outer contour of the container precursor can also be a cylinder A solid, a cube, a polyhedron with a number of faces greater than 6, etc., which are not limited in the embodiments of the present disclosure. In FIG. 11 , the top bonding part 202 is located on the side surface of the cylindrical part of the cuboid, and the top bonding part 202 may also be located on the upper surface or the lower surface of the cuboid.

For example, FIG. 14 is a schematic perspective view of the three-dimensional structure of a container precursor provided by another embodiment of the present disclosure. As shown in FIG. No auxiliary separation member is provided in the first region 203 .

For example, as shown in Figure 14, the auxiliary separating member 205 is arranged on the region of the top bonding portion 202 away from the trace line 206, and the auxiliary separating member 205 is arranged on the end point of the top bonding portion 202 farthest from the trace line 206. location and its adjoining areas. Locating the auxiliary separation feature 205 in a region of the top bond portion 202 away from the trace line 206 may allow for weakening of the bondability of the edge region upon subsequent formation of the sealed container.

For example, as shown in FIG. 14 , the top bonding portion 202 can be folded upwards with the trace line 206 as the axial direction so that the top bonding portion 202 approaches the first region 203 , and finally the first region 203 and the top bonding portion 202 contact and bond to each other, and the trace line 206 is a straight line in FIG. 14 .

At least one embodiment of the present disclosure also provides a method for preparing a sealed container, the preparation method includes: providing a top, the top includes a top surface and a side surface that is more than half the height of the sealed container to be formed, and includes a first region; providing a top bonding portion, the top bonding portion is connected to the top; bonding the first region and the top bonding portion to each other and completely overlapping; wherein, the preparation method further includes: providing an auxiliary separation component, an auxiliary separation component clip Placed between the first region and the top bonding portion, wherein the sealed container to be formed includes a composite layer, the composite layer includes an inner heat-seal layer, a support layer, and an outer layer away from the contents of the sealed container to be formed. A heat-sealing layer, the material of the auxiliary separation component is different from that of the outer heat-sealing layer; the preparation method also includes: providing a bottom, when the bottom is placed on a horizontal surface or a substantially horizontal surface, the sealed container remains stable. The sealed container prepared by this method can make the top and the top adhesive part separate when the temperature of the sealed container reaches the first preset temperature when heating, and then seal the container by weakening the adhesive force between the top and the top adhesive part A pressure relief opening is formed so that the gas in the sealed container is discharged to reduce the pressure difference inside and outside the sealed container, thereby preventing the sealed container from bursting or the contents from splashing.

It should be noted that the current bonding method between the top bonding part and the top of the sealed container is: use hot air to heat the outer heat-sealing layer (such as polyethylene) at the pre-bonding position for thermal activation, and then pass Pressure is applied to the pre-bonding position to make the top bonding part bond to the top, and the bond between the top bonding part and the top of the sealed container can be weakened by controlling the injection amount of hot air, the temperature of the hot air injected, and the pressure. of adhesion.

For example, FIG. 15 is a flow chart of a method for preparing a sealed container according to an embodiment of the present disclosure. As shown in FIG. 15 , the preparation method includes the following steps:

S11: Provide a top, the top includes a top surface and a side surface above about half the height of the sealed container to be formed, and includes a first region.

For example, the top portion may be all or part of the entire cylindrical portion above the centrally located cross-section. For example, the top can be a part of a rectangular side surface of a cuboid located at the upper end and the top; the top can also be all or part of the top surface of the cuboid, and embodiments of the present disclosure are not limited thereto, and it can also include a top sealing portion and The portion of the area adjacent to the top seal, but not including the top bond.

For example, an airtight container whose outer contour shape is a cuboid will be described as an example. The cuboid airtight container is a brick-shaped box-shaped container. Embodiments of the present disclosure are not limited thereto. The outer shape of the airtight container can also be a cylinder or a cube. , Polyhedrons with faces greater than 6, etc.

For example, the plane shape of the first region may be pentagon, heptagon, square, rectangle, a combination of square and triangle, a combination of rectangle and triangle, a combination of circle and triangle, a combination of ellipse and triangle, etc.

S12: Provide a top bonding part, the top bonding part is connected with the top.

For example, the top adhesive part may be located on the side surface of the top. In other embodiments, the top adhesive part may also be located on the top surface of the sealed container and connected to the top, which is not limited in the embodiments of the present disclosure.

For example, the top bonding portion and the top share a base at the joint, and the planar shape of the top bonding portion can also be a pentagon, a heptagon, a square, a rectangle, a combination of a square and a triangle, or a combination of a rectangle and a triangle. One of combination, combination of circle and triangle, combination of ellipse and triangle, zigzag, etc.

S13: Provide an auxiliary separation component, the auxiliary separation component is sandwiched between the first region and the top bonding part, wherein the sealed container to be formed includes a composite layer, and the composite layer includes an inner heat-sealing layer and a support layer stacked in sequence As with the outer heat-seal layer remote from the contents of the sealed container to be formed, the material of the auxiliary separation member is different from the material of the outer heat-seal layer.

For example, the auxiliary separating member is interposed between the first region and the top bonding portion so that when the first region and the top bonding portion are subsequently overlapped, the auxiliary separating member is located in the region where the first region and the top bonding portion overlap .

For example, the auxiliary separating part includes ink, at least one of the outer surface of the top and the outer surface of the top adhesive part is provided with a decorative pattern, the auxiliary separating part is formed in the process of forming the decorative pattern, and an ink forming the decorative layer is used Formed, which can save raw material cost, process cost and equipment cost.

For example, the auxiliary separating part includes a first adhesive, the first region and the top adhesive part are bonded to each other by the first adhesive, and the softening temperature of the first adhesive is 40°C-70°C.

For example, the material of the outer heat-sealing layer included in the composite layer may be polyolefin, such as polyethylene, and the material of the auxiliary separation component is different from polyolefin.

S14: Adhering the first region and the top adhesive part to each other and completely overlapping.

For example, when the auxiliary separation member is exposed to the external environment, the first region and the top adhesive may be directly attached, and pressure may be applied to the top or the top adhesive to bond the first region and the top adhesive to each other.

For example, when the auxiliary separation part is covered by a release film that is detachable from the auxiliary separation part, after the release film is torn off, the first area and the top adhesive part can be directly attached, and the top or the top can be bonded. The portion applies pressure to bond the first region and the top bonding portion to each other.

S15: A bottom is provided, and when the bottom is placed on a horizontal surface or a substantially horizontal surface, the airtight container remains stable.

For example, the bottom of the airtight container can be a structure in which the part of the middle area of the bottom is recessed toward the side near the top, and the part of the outer peripheral edge is in the same plane; it can also be that the part of the middle area of the bottom or the part near the middle area It protrudes away from the top; or it can also be two planes for crimping. Since the thickness of the crimping plane is very thin, the bottom can be considered as a structure located on the same plane; or it can be a part of the middle area of the bottom Located on the same plane as the top, at least part of the edge is recessed toward the side close to the top, or protrudes toward the side away from the top. Embodiments of the present disclosure do not limit the specific structure of the bottom, as long as the airtight container remains stable and does not fall over when the bottom is placed on a horizontal surface or a substantially horizontal surface.

For example, a roughly horizontal surface refers to a plane whose angle with the horizontal surface is within 30 degrees, and the stable state of the airtight container means that when the airtight container is placed on a stationary or rotating bearing plane, even if the airtight container is open at the top, The product inside the sealed container does not flow out.

For example, FIG. 16 is a flowchart of a method for preparing a sealed container according to yet another embodiment of the present disclosure. As shown in FIG. 16 , the preparation method includes the following steps:

S21: Provide a top, the top includes a top surface and a side surface above about half the height of the sealed container to be formed, and includes a first region.

For the description of the top and the first area, reference may be made to the relevant description of FIG. 15 above, which will not be repeated here.

S22: Provide a top bonding part, the top bonding part is connected with the top.

For the description of the top bonding part, refer to the relevant description of FIG. 15 above, which will not be repeated here.

S23: forming a decorative pattern on at least one of the first region and the outer surface of the top bonding part, and forming an auxiliary separating part using ink forming the decorative pattern, the auxiliary separating part is interposed between the first region and the top bonding part , and the sealed container to be formed includes a composite layer, the composite layer includes an inner heat-seal layer, a support layer, and an outer heat-seal layer away from the contents of the sealed container to be formed in sequence, and the material of the auxiliary separation part is separated from the outer layer The materials of the heat seal layer are different.

For example, both the decorative pattern and the auxiliary separating part are printed with red ink, or both the decorative pattern and the auxiliary separating part are printed with green ink. The decorative pattern and the auxiliary separation part are formed using the same material and in the same process step, which can realize the formation of the auxiliary separation part without increasing the types of raw materials or increasing the process steps, thereby saving production cost. In addition, since different raw materials need to be applied using different equipment or components, the decorative pattern and the auxiliary separation component are formed using the same material and in the same process step, which also saves equipment costs.

For example, inks of different colors can be printed onto the outer surface of the top by flexographic printing, and after each printing step is completed, the applied inks are allowed to dry to form the decorative pattern. For example, printing an ink of one of the colors onto the first area of the top and drying the ink can form the secondary separation feature.

For example, in the case that the auxiliary separating part includes ink, the outer surface of the top bonding part can also be provided with a decorative pattern, and the decorative pattern on the top bonding part has at least one color that is the same as that of the auxiliary separating part. The related description of the scheme that the decorative pattern on the top has at least one color and the auxiliary separation part is the same will not be repeated here.

For example, in the case where the auxiliary separating part includes ink, and at least one of the outer surface of the top and the outer surface of the top adhesive part is provided with a decorative pattern, and the decorative pattern has at least one color that is the same as the auxiliary separating part, in the first Adhesive is also interposed between the region and the top bonding portion to bond the first region and the top bonding portion to each other, the adhesive overlapping or non-overlapping with the auxiliary separating means, for example, the adhesive bonding with the auxiliary The separate parts may partially overlap. For example, the adhesive can be common glue.

S24: Bonding the first region and the top bonding part to each other so that the first region and the top bonding part overlap completely.

For example, the auxiliary separation part is exposed to the external environment, can directly attach the first region and the top adhesive part, and apply pressure to the top or the top adhesive part to bond the first region and the top adhesive part to each other.

S25: Provide a bottom, and when the bottom is placed on a horizontal surface or a substantially horizontal surface, the airtight container remains stable.

For example, for the description of the bottom part, refer to the relevant description about FIG. 15 above, which will not be repeated here.

For example, FIG. 17 is a flowchart of a method for preparing a sealed container according to another embodiment of the present disclosure. As shown in FIG. 17 , the preparation method includes the following steps:

S31: Provide a top, the top includes a top surface and a side surface above about half the height of the sealed container to be formed, and includes a first region.

For the description of the top and the first region, reference may be made to the relevant description of FIG. 15 above, which will not be repeated here.

S32: Provide a top bonding part, and the top bonding part is connected with the top.

For the description of the top bonding part, refer to the relevant description of FIG. 15 above, which will not be repeated here.

S33: Provide an auxiliary separation part, and use the first adhesive to form the auxiliary separation part, and the softening temperature of the first adhesive is 40°C-70°C, and the auxiliary separation part is sandwiched between the first area and the top for bonding Between the parts, and the sealed container to be formed includes a composite layer, the composite layer includes an inner heat-seal layer, a support layer, and an outer heat-seal layer away from the contents of the sealed container to be formed in sequence, and the material for auxiliary separation parts It is different from the material of the outer heat seal layer.

Further, the softening temperature of the first adhesive after curing is 55°C-65°C.

For example, the first adhesive is a commercially available Dow brand model DOWSIL ^™ 7657 silicone pressure-sensitive adhesive. When the first adhesive is bonded to the first region and the top bonding portion The applied pressure is 2.5x 104Pa.

For example, when the softening temperature of the first adhesive after curing is lower than 40°C, the bonding force between the top and the top bonding part is poor, and the top and the top bonding part are easily separated without heating, This will affect the quality of the sealed container. When the softening temperature of the first adhesive after curing is higher than 70°C, it is difficult to separate the top and top adhesive parts even under heating conditions, and no pressure relief opening will be formed, which will easily cause the sealed container to be heated. The phenomenon of bursting or splashing of the contents of the sealed container during the process.

S34: Bonding the first region and the top bonding part to each other so that the first region and the top bonding part overlap completely.

For example, when the auxiliary separation part (the first adhesive) is covered by a release film that is detachable from the auxiliary separation part, after the release film is torn off, the first region and the top adhesive part can be bonded directly, And applying pressure to the top or the top bond to bond the first region and the top bond to each other.

S35: Provide a bottom, and when the bottom is placed on a horizontal or substantially horizontal surface, the airtight container remains stable.

For example, for the description of the bottom portion, refer to the above-mentioned relevant description about FIG. 15 , which will not be repeated here.

For example, FIG. 18 is a flowchart of a method for preparing a sealed container according to another embodiment of the present disclosure. As shown in FIG. 18 , the preparation method includes the following steps:

S41: Provide a top, where the top includes a top surface and a side surface above about half the height of the sealed container to be formed, and includes a first region.

For the description of the top and the first area, reference may be made to the relevant description of FIG. 15 above, which will not be repeated here.

S42: Provide a top bonding part, the top bonding part is connected with the top.

For the description of the top bonding part, refer to the relevant description of FIG. 15 above, which will not be repeated here.

S43: Provide an auxiliary separation part, and use the first adhesive to form the auxiliary separation part, the auxiliary separation part is sandwiched between the first region and the top bonding part, and the sealed container to be formed includes a composite layer, the composite layer includes sequentially Laminated inner heat-sealing layer, support layer and outer heat-sealing layer away from the contents of the sealed container to be formed, the material of the auxiliary separation member is different from that of the outer heat-sealing layer.

For example, for the description of the first adhesive, refer to the above related description about FIG. 17 .

S44: providing a second binder.

For example, the second adhesive can be common glue.

S45: Bond the first region and the top bonding portion to each other with the first adhesive and the second adhesive so that the first region and the top bonding portion completely overlap, and the softening temperature of the first adhesive is lower than The softening temperature of the second binder.

For example, the first region and the top bonding portion ensure the stability of the bonding between the top and the top bonding portion through the co-bonding of the first adhesive and the second adhesive, so that the sealed container is transported, transferred Or it can maintain a stable sealing state during the extrusion process, thereby ensuring that the quality of its contents is not damaged. A first adhesive and a second adhesive are disposed between the first region and the top adhesive portion, and the softening temperature of the first adhesive after curing is lower than the softening temperature of the second adhesive after curing so that the Portions of the first region and the top bond bonded by the first adhesive can be more easily separated from each other, i.e., relative to bonding the first region and the top bond with only the second adhesive without the second adhesive. In the case where an adhesive bonds the first area and the top adhesive portion, the first adhesive acts to weaken the adhesive force between the first area and the top adhesive portion.

For example, the auxiliary separation part is covered by a release film that is separable from the auxiliary separation part. After the release film is torn off, the first area and the top adhesive part are directly pasted, and the top or the top adhesive part Pressure is applied to bond the first region and the top bond to each other.

S46: Provide a bottom, and when the bottom is placed on a horizontal or substantially horizontal surface, the airtight container remains stable.

For example, for the description of the bottom portion, refer to the above-mentioned relevant description about FIG. 15 , which will not be repeated here.

For example, in another embodiment, the preparation method of the sealed container further comprises: sterilizing the container precursor with hydrogen peroxide, and then filling the content in the container precursor; further folding to form the top region of the container precursor , and then bonding the first region and the top adhesive portion to each other to form a sealed container that is closed and filled with contents.

The airtight container, the sheet-like composite material, the container precursor, and the method for preparing the airtight container provided by the embodiments of the present disclosure have at least one of the following beneficial effects:

(1) In the sealed container provided by at least one embodiment of the present disclosure, the auxiliary separation member can weaken the adhesive force between the first area of the sealed container and the top bonding part, so that when the sealed container is heated, the sealed container When the temperature reaches the preset temperature, the top and the top adhesive part are separated, thereby preventing the bursting of the sealed container or the splashing of the contents in the sealed container.

(2) In the airtight container provided by at least one embodiment of the present disclosure, the decorative pattern and the auxiliary separation part are formed in the same process step using the same material, and the auxiliary part can be realized without increasing the types of raw materials or increasing the process steps. The formation of separate parts saves production costs and also saves equipment costs.

In addition, the present disclosure may also be configured as below.

(1) A sealed container, comprising:

a top comprising a top surface and side surfaces above about one-half the height of said sealed container and comprising a first region; and

a top bonding portion, connected to the top, wherein,

said first region and said top bond portion are bonded to each other and completely overlap;

The airtight container further includes an auxiliary separation member interposed between the first region and the top adhesive portion, the airtight container includes a composite layer including sequentially stacked inner a heat-seal layer, a support layer, and an outer heat-seal layer away from the contents of the sealed container, the auxiliary separation member being of a material different from that of the outer heat-seal layer;

The airtight container also includes a bottom, and when the bottom is placed on a horizontal or substantially horizontal surface, the airtight container remains stable.

(2) The airtight container according to (1), wherein there is a trace line at the position where the top bonding part is connected to the top, and the top bonding part is folded relative to the top along the trace line to a position where the first region and the top bond portion are bonded to each other;

The auxiliary separating member is disposed spaced apart from the trace line.

(3) The airtight container according to (2), wherein,

The planar shape of the auxiliary separating part includes a first polygon, and the first polygon includes a first vertex, and the vertex of the first vertex is the part of the auxiliary separating part farthest from the trace line. point;

The planar shape of the top bonding portion is a second polygon, the second polygon includes a second vertex, and the vertex of the second vertex is the point of the top bonding portion farthest from the trace. line point;

The shortest distance between the first polygon and the trace line is a first distance;

The shortest distance from the second vertex to the trace line is a second distance;

The first distance is greater than or equal to half of the second distance.

(4) The airtight container according to any one of (1) to (3), wherein the auxiliary separating member includes a plurality of dot patterns separated from each other and/or the auxiliary separating member includes a grid pattern.

(5) The airtight container according to any one of (1) to (4), wherein the area of the auxiliary separation member is 5% to 80% of the area of the first region.

(6) The airtight container according to any one of (1) to (5), wherein the airtight container has a cylindrical shape, and the top adhesive part is provided on the side surface of the top.

(7) The airtight container according to (6), wherein the airtight container includes two opposed top adhesive parts, and only one of the top adhesive parts and the first region Said auxiliary separation means are provided.

(8) The sealed container according to any one of (1)-(7), further comprising a top seal and a bottom seal, wherein the seal strength of the top seal is smaller than the seal strength of the bottom seal .

(9) The airtight container according to any one of (1) to (8), wherein,

The auxiliary separation member includes ink;

The outer surface of the airtight container is provided with a decorative pattern, and the decorative pattern has at least one color that is the same as that of the auxiliary separating part.

(10) The airtight container according to any one of (1)-(9), wherein the auxiliary separation member includes a first adhesive, and the first region and the top adhesive portion pass through the The first binders are bonded to each other, and the softening temperature of the first binders is 40°C-70°C.

(11) The airtight container according to any one of (1)-(10), wherein the auxiliary separation member includes a first adhesive, and there is a further gap between the first region and the top adhesive part. A second adhesive is interposed, the first region and the top adhesive portion are bonded to each other by the first adhesive and the second adhesive, the softening of the first adhesive The temperature is below the softening temperature of the second binder.

(12) The airtight container according to any one of (1) to (11), wherein,

When the temperature of the sealed container reaches a first preset temperature, the top bonding part is configured to be separated from the top;

When the temperature of the sealed container reaches a second preset temperature, the sealed container is configured to form a pressure relief opening, and the pressure relief opening is configured to communicate the interior of the sealed container to the external environment;

The first preset temperature is less than or equal to the second preset temperature.

(13) A sheet-like composite material comprising:

a first surface and a second surface, and comprising a first recombination region and a second recombination region, wherein,

The first composite area includes a first heat-sealing layer, a support layer and a second heat-sealing layer stacked in sequence from the first surface to the second surface;

The second composite area includes an auxiliary separation member, the first heat-sealing layer, the supporting layer, and the second heat-sealing layer stacked in sequence from the first surface to the second surface, and the The material of the auxiliary separation member is different from the material of the first heat-sealing layer,

The sheet-like composite material also includes two first boundary edges parallel to the longitudinal direction and two second boundary edges parallel to the transverse direction, the longitudinal direction and the transverse direction being orthogonal;

The sheet-form composite material also includes a bottom transverse crease line and a top transverse crease line dividing the sheet-form composite material into:

a bottom region, which includes a bottom crease pattern;

a top region, which includes a top crease pattern; and

an intermediate region between said bottom transverse crease line and said top transverse crease line and located between said bottom region and said top region with respect to said longitudinal direction;

The top transverse crease line includes:

top central part;

at least one top portion disposed on one side of the top central portion and adjacent to one of the first boundary edges; and

at least one top side portion adjacent to a side of the top central portion and extending between the top central portion and the at least one top end portion;

said top crease pattern includes at least one pair of angled crease lines skewed relative to both said longitudinal direction and said transverse direction and extending within said top region;

wherein said oblique crease line has a first end pointing towards one of said second boundary edges and a second end pointing towards a continuous line parallel to said transverse direction and said top central portion and said at least one top end portion comprising said top transverse crease line; said oblique crease line together with said at least one top side portion delimits a flap region of said sheet-like composite material, said tab region is configured to form at least part of a top bond;

wherein said top crease pattern further comprises at least one pair of longitudinal crease lines extending within said top region, disposed on opposite sides of said flap region with respect to said transverse direction, and together defining a fold line ;

The top region includes a first region, the fin region is connected to the top region, wherein,

The first region and the flap region are set to be bondable to each other and can completely overlap each other, and at least one of the first region and the flap region is provided with an auxiliary separation component, and is provided with the Said flap region and/or said first region of the auxiliary separation member corresponds to said second recombination region.

(14) The sheet-like composite material according to (13), wherein, in the first composite region, a decorative pattern is provided on the side of the first heat-sealing layer away from the second heat-sealing layer , the decorative pattern has at least one color that is the same as that of the auxiliary separation component.

(15) A container precursor comprising: the sheet-like composite material according to (13) or (14), and a longitudinal seam, wherein the longitudinal seam connects two of the sheet-like composite materials; The first boundary edges are joined to form a surrounding container precursor.

(16) The container precursor according to (15), wherein the auxiliary separation member is exposed to an external environment or is covered with a release film detachable from the auxiliary separation member.

(17) The container precursor according to (15) or (16), wherein the auxiliary separation member includes ink;

At least one of the outer surface of the top region and the outer surface of the flap region is provided with a decorative pattern having at least one color that is the same as the auxiliary separation member.

(18) The container precursor according to any one of (15) to (17), wherein the auxiliary separation member includes a first adhesive having a softening temperature of 40° C. to 70°C.

(19) The container precursor according to any one of (15)-(18), wherein the auxiliary separation member includes a first adhesive, and at least one of the first region and the flap region A second binder is also provided, the softening temperature of the first binder being lower than the softening temperature of the second binder.

(20) A method for preparing a sealed container, comprising:

providing a top comprising a top surface and side surfaces above approximately one-half the height of the sealed container to be formed and comprising a first region;

providing a top bond, the top bond being connected to the top;

bonding the first region and the top bonding portion to each other and completely overlapping; wherein,

The manufacturing method further includes: providing an auxiliary separation member interposed between the first region and the top adhesive portion, wherein the sealed container to be formed includes a composite layer, the The composite layer includes an inner heat-sealing layer, a support layer and an outer heat-sealing layer away from the contents of the sealed container to be formed in sequence, and the material of the auxiliary separation component is the same as the material of the outer heat-sealing layer different;

The preparation method further includes: providing a bottom, and when the bottom is placed on a horizontal surface or a substantially horizontal surface, the airtight container remains stable.

(21) The preparation method according to (20), further comprising: forming a decorative pattern on the outer surface of the sealed container to be formed, and using at least one color of ink forming the decorative pattern to form the auxiliary separation part.

(22) The production method according to (20 or 21), wherein,

Providing the auxiliary separation part includes: using a first adhesive to form the auxiliary separation part, and the softening temperature of the first adhesive is 40°C-70°C;

The first region and the top bonding portion are bonded to each other by the first adhesive.

The following points need to be explained:

(1) The drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures may refer to general designs.

(2) For the sake of clarity, in the drawings used to describe the embodiments of the present disclosure, the thicknesses of layers or regions are exaggerated or reduced, that is, the drawings are not drawn in actual scale. It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "under" another element, it can be "directly on" or "under" the other element, Or intervening elements may be present.

(3) In the case of no conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

The above description is only a specific implementation manner of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims (22)

A sealed container comprising: a top comprising a top surface and side surfaces above about one-half the height of said sealed container and comprising a first region; and a top bonding portion, connected to the top, wherein, said first region and said top bond portion are bonded to each other and completely overlap; The airtight container further includes an auxiliary separation member interposed between the first region and the top adhesive portion, the airtight container includes a composite layer including sequentially stacked inner a heat-seal layer, a support layer, and an outer heat-seal layer away from the contents of the sealed container, the auxiliary separation member being of a material different from that of the outer heat-seal layer; The airtight container also includes a bottom, and when the bottom is placed on a horizontal or substantially horizontal surface, the airtight container remains stable. The sealed container according to claim 1, wherein the position where the top adhesive part is connected to the top has a trace line along which the top adhesive part is folded relative to the top so that the a position where the first region and the top bonding portion are bonded to each other; The auxiliary separating member is disposed spaced apart from the trace line. The airtight container according to claim 2, wherein: The planar shape of the auxiliary separating part includes a first polygon, and the first polygon includes a first vertex, and the vertex of the first vertex is the part of the auxiliary separating part farthest from the trace line. point; The planar shape of the top bonding portion is a second polygon, the second polygon includes a second vertex, and the vertex of the second vertex is the point of the top bonding portion farthest from the trace. line point; The shortest distance between the first polygon and the trace line is a first distance; The shortest distance from the second vertex to the trace line is a second distance; The first distance is greater than or equal to half of the second distance. The airtight container according to any one of claims 1 to 3, wherein the auxiliary separation member includes a plurality of dot patterns separated from each other and/or the auxiliary separation member includes a grid pattern. The sealed container according to any one of claims 1-4, wherein the area of the auxiliary separation member is 5%-80% of the area of the first region. The airtight container according to any one of claims 1-5, wherein the airtight container is cylindrical, and the top bonding part is provided on the side surface of the top. The airtight container according to claim 6, wherein the airtight container comprises two opposed top adhesive parts, and only one of the top adhesive parts is provided between the first area and the first area. Auxiliary separation parts described above. The sealed container according to any one of claims 1-7, further comprising a top seal and a bottom seal, wherein the seal strength of the top seal is less than the seal strength of the bottom seal. The sealed container according to any one of claims 1-8, wherein, The auxiliary separation member includes ink; The outer surface of the airtight container is provided with a decorative pattern, and the decorative pattern has at least one color that is the same as that of the auxiliary separating part. The sealed container according to any one of claims 1-9, wherein the auxiliary separation member includes a first adhesive, and the first region and the top adhesive portion are passed through the first adhesive. bonded to each other, and the softening temperature of the first binder is 40°C-70°C. The sealed container according to any one of claims 1-10, wherein the auxiliary separation member comprises a first adhesive, and a second adhesive is interposed between the first region and the top adhesive part. adhesive, the first region and the top adhesive portion are bonded to each other by the first adhesive and the second adhesive, the softening temperature of the first adhesive being lower than that of the The softening temperature of the second binder. The sealed container according to any one of claims 1-11, wherein, When the temperature of the sealed container reaches a first preset temperature, the top adhesive part is configured to be separated from the top; When the temperature of the sealed container reaches a second preset temperature, the sealed container is configured to form a pressure relief opening, and the pressure relief opening is configured to communicate the interior of the sealed container to the external environment; The first preset temperature is less than or equal to the second preset temperature. A sheet-like composite material comprising: a first surface and a second surface, and comprising a first recombination region and a second recombination region, wherein, The first composite area includes a first heat-sealing layer, a support layer and a second heat-sealing layer stacked in sequence from the first surface to the second surface; The second composite area includes an auxiliary separation member, the first heat-sealing layer, the supporting layer, and the second heat-sealing layer stacked in sequence from the first surface to the second surface, and the The material of the auxiliary separation member is different from the material of the first heat-sealing layer, The sheet-like composite material also includes two first boundary edges parallel to the longitudinal direction and two second boundary edges parallel to the transverse direction, the longitudinal direction and the transverse direction being orthogonal; The sheet-form composite material also includes a bottom transverse crease line and a top transverse crease line dividing the sheet-form composite material into: a bottom region, which includes a bottom crease pattern; a top region, which includes a top crease pattern; and an intermediate region between said bottom transverse crease line and said top transverse crease line and located between said bottom region and said top region with respect to said longitudinal direction; The top transverse crease line includes: top central part; at least one top portion disposed on one side of the top central portion and adjacent to one of the first boundary edges; and at least one top side portion adjacent to a side of the top central portion and extending between the top central portion and the at least one top end portion; said top crease pattern includes at least one pair of angled crease lines skewed relative to both said longitudinal direction and said transverse direction and extending within said top region; wherein said oblique crease line has a first end pointing towards one of said second boundary edges and a second end pointing towards a continuous line parallel to said transverse direction and said top central portion and said at least one top end portion comprising said top transverse crease line; said oblique crease line together with said at least one top side portion delimits a flap region of said sheet-form composite material, said tab region is configured to form at least part of a top bond; wherein said top crease pattern further comprises at least one pair of longitudinal crease lines extending within said top region, disposed on opposite sides of said flap region with respect to said transverse direction, and together defining a fold line ; The top region includes a first region, the fin region is connected to the top region, wherein, The first region and the flap region are set to be bondable to each other and can completely overlap each other, and at least one of the first region and the flap region is provided with an auxiliary separation component, and is provided with the Said flap region and/or said first region of the auxiliary separation member corresponds to said second recombination region. The sheet-like composite material according to claim 13, wherein, in the first composite region, a decorative pattern is provided on the side of the first heat-sealing layer away from the second heat-sealing layer, the The decorative pattern has at least one color that is the same as that of the auxiliary separating member. A container precursor comprising: a sheet-form composite material according to claim 13 or 14 and a longitudinal seam, wherein said longitudinal seam connects two said first boundary edges of said sheet-form composite material To form a surrounding container precursor. The container precursor according to claim 15, wherein the auxiliary separation member is exposed to an external environment or is covered with a release film detachable from the auxiliary separation member. A container precursor according to claim 15 or 16, wherein the auxiliary separating means comprises ink; At least one of the outer surface of the top region and the outer surface of the flap region is provided with a decorative pattern having at least one color that is the same as the auxiliary separation member. The container precursor according to any one of claims 15-17, wherein the auxiliary separation member comprises a first adhesive having a softening temperature of 40°C to 70°C. The container precursor according to any one of claims 15-18, wherein the auxiliary separation means comprises a first adhesive, and at least one of the first region and the flap region is further provided with a second A binder, the softening temperature of the first binder is lower than the softening temperature of the second binder. A method for preparing a sealed container, comprising: providing a top comprising a top surface and side surfaces above approximately one-half the height of the sealed container to be formed and comprising a first region; providing a top bond, the top bond being connected to the top; bonding the first region and the top bonding portion to each other and completely overlapping; wherein, The manufacturing method further includes: providing an auxiliary separation member interposed between the first region and the top adhesive portion, wherein the sealed container to be formed includes a composite layer, the The composite layer includes an inner heat-sealing layer, a support layer and an outer heat-sealing layer away from the contents of the sealed container to be formed in sequence, and the material of the auxiliary separation component is the same as the material of the outer heat-sealing layer different; The preparation method further includes: providing a bottom, and when the bottom is placed on a horizontal surface or a substantially horizontal surface, the airtight container remains stable. The preparation method according to claim 20, further comprising: forming a decorative pattern on the outer surface of the sealed container to be formed, and using at least one color of ink forming the decorative pattern to form the auxiliary separating member. The preparation method according to claim 20 or 21, wherein, Providing the auxiliary separation part includes: using a first adhesive to form the auxiliary separation part, and the softening temperature of the first adhesive is 40°C-70°C; The first region and the top bonding portion are bonded to each other by the first adhesive.

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