WO2020029078A1 - Separable laminated container and manufacturing method therefor - Google Patents

Abstract

A separable laminated container and a manufacturing method therefor. The container comprises an outer layer (10) and an inner layer (20). The inner layer (20) is used to accommodate the contents and can separate from the outer layer (10) and collapse as the contents decrease. An air introduction slit (12) is disposed at a bottom seam of the outer layer (10) passing through the bottom surface of the outer layer (10), thereby forming a separable laminated container that has a simple structure and is easy to manufacture.

Description

Laminated peeling container and manufacturing method thereof Technical field

The invention relates to a laminated peeling container and a manufacturing method thereof, and in particular, to a laminated peeling container which is easy to manufacture and a manufacturing method thereof.

Background technique

The existing laminated peeling container mainly includes an outer layer and an inner layer that can be peeled off from the outer layer, such as Taiwan Patent Publication No. I570029 or Taiwan Patent Publication No. I602683, etc. The structure is complicated and the manufacturing process is cumbersome. Therefore, the overall manufacturing cost of the existing laminated peeling container is high, and it is necessary to further improve it.

In addition, Taiwan Patent Publication No. 504451 (hereinafter referred to as the reference) discloses a method and container for manufacturing a pressure-equalized open container, which includes an outer container and an inner bag, and a pressure is formed on the bottom surface of the outer container. The equalizing opening is manufactured by co-extruding a coaxial primary mold from the open half of a blow mold, extruding an appropriate amount of raw material, and melting the raw material in contact with the outer container and the seam portion, and the tube forming the inner bag is clamped. Then, it is fixed and fused between the outer container wall parts along the axial direction, so that the inner bag is subjected to pressure to form a pressure equalization opening.

However, the manufacturing methods such as the reference case need to be blown into the outer container and the inner bag, and then the outer container can be extruded to form a pressure equalizing opening after applying pressure. In addition, the manufacturing process is more complicated. During the molding process, the inner bag is sandwiched by the outer container. Therefore, after the pressure equalization opening is applied, the inner bag is still attached to the side of the pressure equalization opening, which will make the pressure The area of the equalizing opening is reduced, reducing the effect of air entering the outer container through the pressure equalizing opening.

Therefore, in view of the problems and defects in the structure and manufacturing method of the existing laminated peeling container, the inventor finally developed an invention that can improve the defects in the prior art after continuous experiments and research.

Summary of the invention

An object of the present invention is to provide a laminated peeling container and a manufacturing method thereof, which can simplify the manufacturing process of the laminated peeling container, so as to achieve the purpose of saving the overall manufacturing cost.

To achieve the above object, the present invention provides a laminated peeling container, which has an inner layer and an outer layer. The inner layer is used for containing a content, and can be peeled and shrunk relative to the outer layer as the content decreases, wherein:

An air introduction slit penetrating the bottom surface of the outer layer is provided at the joint of the bottom surface of the outer layer, and the cross section of the air introduction slit is an opening with a wide width and a narrow width.

The invention also provides a method for manufacturing a laminated peeling container, which comprises the following steps:

Providing a fused tubular laminated structure including an outer layer and an inner layer;

The molten tubular laminated structure is placed in a container mold, which is composed of two mold bases which can be opened and closed relatively, and a cutter which is movable relative to the mold base is arranged at the bottom of one of the mold bases;

The two mold bases are moved close to each other and closed. When the two mold bases are closed, the bottom surface of the two mold bases is used to press the molten tubular laminated structure, so that the near bottom end of the molten tubular laminated structure is contracted and closed to melt The outer layer and the inner layer of the tubular laminated structure form a closed surface at the contraction point;

A mouthpiece is placed at the top of the molten tubular laminated structure, and air is blown into the molten tubular laminated structure, so that the molten tubular laminated structure is shaped into a container having a specific shape according to the shape of the container mold;

Move the cutter upwards to use the cutter to simultaneously remove the waste at the bottom of the container, and at the same time cut an air inlet slot with a triangular opening in the outer bottom surface; and

Open the container mold and take out the container to complete the production of the laminated peel container.

Through the above technical means, the present invention can appropriately simplify the structure and manufacturing method of the laminated peeling container, so as to achieve the effect of saving the overall production cost of the laminated peeling container.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a partial perspective sectional view of a first embodiment of a laminated peeling container of the present invention.

FIG. 2 is a partial perspective cross-sectional view of a second embodiment of the laminated peeling container of the present invention.

Fig. 3 is a side sectional view of a second embodiment of the laminated peeling container of the present invention.

Fig. 4 is a bottom view of a second embodiment of the laminated peeling container of the present invention.

Fig. 5 is a bottom view of an operating embodiment of the present invention.

6 to 9 are schematic sectional views of the manufacturing method of the present invention.

FIG. 10 is a side cross-sectional view of a manufacturing method of the present invention moving a cutter to cut an air introduction slot.

Fig. 11 is a partially enlarged sectional view of a third embodiment of the present invention.

Fig. 12 is a partially enlarged sectional view of a fourth embodiment of the present invention.

Description of main component labels:

10, 10A, 10B outer layer

12, 12A, 12B air inlet joint

14positioning projection

20 inner layer

22locating groove

30 molten tubular laminated structure

40 mold base

402 groove

42 tools

50 mouthpiece

detailed description

The present invention relates to a laminated peeling container and a manufacturing method thereof. Please refer to FIG. 1. It can be seen from the figure that the laminated peeling container of the present invention mainly includes an outer layer 10 and an inner layer 20. The inner layer 20 is disposed in the outer layer 10, and the inner layer 20 can contain a gel, a liquid or a paste, and the inner layer 20 can be peeled and shrunk from the outer layer 10 as the content decreases. The bottom surface of the 10 is provided with an air introduction slot 12 penetrating the bottom surface of the outer layer 10 at a parting line thereof. The air introduction slot has a wide and narrow cross-section opening. Through the arrangement of the air introduction slot 12, when the contents are When discharged from the container, the pressure between the outer layer 10 and the inner layer 20 will be unbalanced. At this time, the air outside the container can be introduced between the outer layer 10 and the inner layer 20 through the air introduction slot 12 to provide the container. The pressure compensation function helps the inner layer 20 to be peeled and shrunk from the outer layer 10 so that the contents can be smoothly discharged from the container.

Please also refer to FIG. 2 to FIG. 5. Two positioning protrusions 14 are protruded from the bottom of the outer layer 10, and two positioning protrusions are recessed from the bottom of the inner layer 20, which can be clamped to the outer layer 10 respectively. The positioning groove 22 in the convex portion 14 can clamp the positioning groove 22 of the inner layer 20 through the positioning protrusion 14 of the outer layer 10. Please refer to FIG. 4 to limit the peeling of the inner layer 20 from the outer layer 10. The direction of shrinkage, so that the inner layer 20 will have a more regular shrinkage and deformation when peeled from the outer layer 10, so that the contents can be fully squeezed out of the container to avoid remaining due to irregular deformation of the inner layer 20. There are too many contents in the container, causing waste. Preferably, the positions of the two positioning protrusions 14 and the positioning grooves 22 are respectively located at both ends of the air introduction slot 12, so that the direction of the inner layer 20 can be peeled and shrunk. In a direction perpendicular to the cutting surface of the air introduction slit 12.

In addition, the air introduction slit 12 of the present invention may have a triangular cross-section opening, as shown in FIG. 8, and the air introduction slits 12A, 12B of the outer layers 10A, 10B may also have a semi-circular cross-section, as shown in FIG. 11, or As shown in FIG. 12, it has a polygonal cross section.

Please refer to FIG. 6 to FIG. 10 again. The manufacturing method of the laminated peeling container of the present invention mainly includes the following steps:

A molten tubular laminated structure 30 is provided. The laminated structure 30 includes an outer layer 10 and an inner layer 20.

The molten tubular laminated structure 30 is placed in a container mold composed of two mold bases 40 which can be opened and closed relatively. A bottom of one of the mold bases 40 is provided to move up and down relative to the mold base 40. In addition, a concave groove 402 can be respectively recessed on the inner bottom surface of the two mold bases 40.

The two mold bases 40 are moved close to each other and covered. When the two mold bases 40 are closed, the bottom surface of the two mold bases 40 is used to press the molten tubular laminated structure 30 so that the proximal end of the tubular laminated structure 30 is contracted against A joint is formed to form a closed surface of the outer layer 10 and the inner layer 20 of the tubular laminated structure 30 at the contraction place.

A blowing nozzle 50 is inserted into the molten tubular laminated structure 30 through the top opening of the molten tubular laminated structure 30, and air is blown into the molten tubular laminated structure 30, so that the molten tubular laminated structure 30 is expanded and is in accordance with the container. The shape of the mold is formed into a container with a specific shape that is consistent with the shape of the cavity of the container mold. The width of the inner bottom groove 402 of the two mold bases 40 can be controlled to make the container during blow molding. A positioning protrusion 14 is formed on the outer layer 10 so as to sandwich the positioning groove 22 formed on the bottom surface of the inner layer 20.

Move the cutter 42 upward to use the cutter 42 to cut off the waste at the bottom of the container, and at the same time, cut an air introduction slit 12 with a triangular cross-section at the joint of the bottom surface of the outer layer 10, and the inner layer 20 is not Being sandwiched by the outer layer 10 at the air introduction slot 12 can increase the entire area of the air introduction slot 12 to enhance the effect of air entering the inner layer 20 and the outer layer 10 through the air introduction slot 12.

Open the mold and take out the container to complete the production of the laminated peel container.

Through the manufacturing method described above, the air introduction slit 12 can be formed on the bottom surface of the outer layer 10 when the cutter 42 cuts off the waste material, which can greatly simplify the manufacturing process of the laminated peeling container, thereby reducing the overall manufacturing cost of the laminated peeling container .

The above descriptions are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention. Any equivalent change and modification made by those skilled in the art without departing from the concept and principle of the present invention shall fall within the protection scope of the present invention. Moreover, it should be noted that the components of the present invention are not limited to the above-mentioned overall application. Each technical feature described in the description of the present invention can be selected individually or used in combination according to actual needs. Therefore, the present invention Of course, other combinations and specific applications related to the present invention are covered.

Claims (7)

A laminated peeling container has an inner layer and an outer layer. The inner layer is used for containing a content, and can be peeled and shrunk relative to the outer layer as the content decreases. It is characterized by: An air introduction slit penetrating the bottom surface of the outer layer is provided at a joint of the bottom surface of the outer layer, and a cross section of the air introduction slit is an opening with a lower width and an upper narrow. The laminated peeling container according to claim 1, wherein two ends of the air introduction slot penetrating through the bottom surface of the outer layer are respectively provided with two positioning protrusions, and the bottom surface of the inner layer is relatively concavely provided with two separate portions. A positioning groove sandwiched between two positioning protrusions of the outer layer. The laminated peeling container according to claim 1 or 2, wherein a cross section of the air introduction slit is a triangular opening. The laminated peeling container according to claim 1 or 2, wherein a cross section of the air introduction slit is a semicircular opening. The laminated peeling container according to claim 1 or 2, wherein a cross section of the air introduction slit is a polygonal opening. A method for manufacturing a laminated peeling container, which comprises the following steps: Providing a fused tubular laminated structure including an outer layer and an inner layer; The molten tubular laminated structure is placed in a container mold. The container mold is composed of two mold bases which can be opened and closed relatively. A bottom of one of the mold bases is provided to be movable relative to the mold base. Cutting tool The two mold bases are moved close to each other and covered. When the two mold bases are closed, the bottom surfaces of the two mold bases are used to press the molten tubular laminated structure to make the molten tubular laminated structure Shrinking and closing at the near bottom end, so that the outer layer and the inner layer of the molten tubular laminated structure form a closed surface at the shrinking point; A mouthpiece is placed at the top of the molten tubular laminated structure, and air is blown into the molten tubular laminated structure, so that the molten tubular laminated structure is shaped into a specific shape according to the shape of the container mold. Container Moving the cutter upward to simultaneously cut off the waste at the bottom end of the container using the cutter, and simultaneously cut an air introduction slot on the bottom surface of the outer layer; and The container mold is opened and the container is taken out to complete the production of the laminated peeling container. The method for manufacturing a laminated peeling container according to claim 6, characterized in that a groove is respectively recessed on the inner bottom surface of the two mold bases, so that when the container is blow-molded, the outer layer and The bottom surface of the inner layer is correspondingly formed with positioning bumps and positioning grooves which can be relatively clamped.

Images