WO2003064284A1 - Container - Google Patents

Abstract

A container capable of releasing to the outside of a container body a fermentation gas or an expansion gas by microwave-oven heating without liquid leaking. The opening end of a container body (1) is provided with annular sealing surface portions (21, 22) and a support surface portion (23), with the support surface portion projecting slightly upward beyond the sealing surface portions. The peripheral edge of a lid, covering the opening end so as to form spaces (9, 10) on the inner and outer sides of the support surface portion, is in close contact with the support surface portion and sealingly attached to the sealing surface portion. Communication passages (6, 7) for allowing the interior or exterior of the container body to communicate with the spaces are formed at the sealing surface portions. A fluid passage formed by the communication passages and the spaces works as an interior shut-off passage for sealing against liquid and content in the container body at a close contact portion (8) between the support surface portion and the lid peripheral edge. It works as a series of fluid passages for passing the pressurized gas generated in the container body with the close contact portion forcibly separated.

Description

 Specification

 Bowl

 Technical field

 The present invention allows the fermentation gas generated from the container or the inflation gas generated by heating in a microwave oven to escape to the outside without leaking the liquid component in the container, thereby expanding the container body or the lid, It mainly concerns containers that contain food.

 Background art

 For example, in a container containing fermented products such as kimchi and pickles, after sealing, the contents continue fermentation inside and generate gas. As the fermentation progresses, the gas fills the container and inflates the lid or the container body, and in some cases, may explode. In order to solve this problem, a gas vent hole may be provided in the container body or the lid.However, since the contents contain liquid, the liquid can be easily discharged from the gas vent hole during transportation. Minutes leak. Also, in the case of sealed foods for microwave cooking, if the heating or heating time by the microwave oven is too long, the water vapor and the like in the container expands and causes a similar situation such as rupture.

 回避 To avoid lid loss due to gas expansion of fermented food A, in a conventional container, for example, as shown in Fig. 14, a bag-shaped adsorbent B that absorbs gas is placed on the back of lid C. It is stuck on.

 However, in such a container, the adsorbent B must be fixed to the back surface of the lid C before the lid C is sealed to the opening end face or the flange portion of the container body D by heat welding or the like. Since the work of installing the adsorbent B is usually performed manually, the production efficiency is low. In addition, the production cost increases because of the use of the adsorbent B.

 No specific measures have been taken to avoid accidents due to gas inflation in containers containing microwave cooked food.

An object of the present invention is to eliminate only the gas inside a sealed container main body without leaking out of the container main body, thereby eliminating various inconveniences caused by gas swelling. To provide containers for

 Disclosure of the invention

 The container of the present invention (the invention according to claim 1) includes a container main body and a lid that covers an opening of the container main body. The liquid or container inside the container body is not easily leaked to the sealed part between the container body and the lid, and the pressure of gas or expanding gas generated inside the container body by heating the microwave oven, etc. Gas is provided with a fluid passage that can leak.

 The fluid passage is provided in a sealed portion between the container body and the lid, that is, a sealed portion between the opening end surface (including the flange portion) of the container body and the peripheral portion of the lid. The sealing portion is a portion where the container body and the lid are sealed, and includes a case where an intermediate member is interposed between the container body and the lid. When an intermediate member is interposed, a fluid passage described later is provided inside the intermediate member. Regarding the fluid passage of the intermediate member, the configuration described later is applied to the portion on the container body side and the portion on the lid body side. The sealing means includes heat welding, bonding, or other fixing and stopping means, and is appropriately selected depending on the materials of the lid and the container body. The lid has a sealing portion made of a sheet material such as a plastic film sheet or other flexible materials, and the surface is appropriately printed as necessary. If the sealing means cannot be peeled off, the lid is opened by cutting it off with an appropriate instrument. The entire lid does not need to be formed of a flexible material, and may be thick or tall.

 The following means are used to form the fluid passage.

On the opening end surface of the container body in which the lid is sealed, a plurality of annular sealing surfaces are formed at intervals in the radial direction along the opening, and between the sealing surfaces, above the sealing surface. The protruding support surface is similarly formed in an annular shape. The peripheral portion of the lid covering the opening end surface is brought into close contact with the upper end of the support surface portion and is sealed to the sealing surface portion so that voids are formed on both sides of the inside and outside of the support surface portion. The peripheral edge portion of the lid is fixed to the sealing surface portion, but only adheres to the supporting surface portion without being fixed. The sealing surface traverses the sealing surface, respectively, inside the container body or the container body. A communication path for communicating the outside with the gap is formed. The fluid passage formed by these communication passages and the above-mentioned voids is an internal shut-off for sealing the liquid or the contents in the container body at the close contact portion between the support surface and the peripheral edge of the lid. While forming the passage, the above-mentioned close contact portion is forcibly separated from the gas generated in the container body or the pressurized gas such as the expanding gas, and is allowed to pass therethrough. It forms a series of fluid passages.

 The open end face of the container body to which the lid peripheral edge is sealed is the upper end face of the container body when the thickness of the container body is large, and is outside the open end of the container body when the thickness is relatively thin. It is an upper surface of the flange portion formed to protrude in the direction.

 The sealing surface portion is a portion where the peripheral edge portion of the lid is sealed at the opening end surface, and forms an annular shape along the opening. At least two sealing surfaces are provided at intervals in the radial direction (width direction) of the opening end surface. The method of sealing to the sealing surface is not limited to any fixing means such as heat welding and bonding.

 The support surface provided between the sealing surfaces protrudes above the sealing surface. The support surface is formed, for example, in a trapezoidal cross section. The upper end surface of the support surface and the peripheral edge of the lid are kept in close contact with each other without being sealed as described above. Since the support surface protrudes above the sealing surface, a gap is formed between the periphery of the lid covering the opening end surface and both sides of the support surface. When no retaining groove is formed between both sides of the support surface and the sealing surface, this void serves as both a liquid retaining space and a gas passage. Therefore, it is desirable to set the degree of protrusion of the support surface portion to be larger when there is no retaining groove than when it is present. Further, the contact portion may be provided with an intermittent fixing portion depending on the size of the container or the like as the material of the lid.

An annular retaining groove is preferably formed between the sealing surface and the support surface, particularly between the innermost sealing surface and the adjacent support surface. Of course, an annular retaining groove may be formed between the support surface portion and the sealing portion. For example, when two sealing surfaces are provided on the opening end surface of the container body and one supporting surface portion is formed between the sealing surfaces on the opening end surface of the container body, the inner mounting surface portion An inner retaining groove and an outer retaining groove are formed between the first and second supporting surfaces and between the outer mounting surface and the outer supporting surface, respectively.

 A communication passage communicating with the gap is provided in the sealing surface. The communication passage is generally formed as a groove on the surface. When the retaining groove is formed, the communication passage may be formed to penetrate the wall surface of the sealing surface. Although the positional relationship and the number of the communication passages respectively formed in the plurality of mounting surface portions are not particularly limited, it is preferable that the communication passages be provided at the counter electrodes in the circumferential direction. The fluid passage formed by the communication passage and the cavity is a series of fluids for pressure gas such as fermentation gas or heated gas, in which the contact portion between the upper end of the support surface and the peripheral edge of the lid is separated by pressure. Since the passage is formed, the degree of adhesion between the upper end of the support surface and the peripheral edge of the lid is set in consideration of this.

 The container according to the above-mentioned invention is provided with a plurality of annular sealing surfaces for sealing the peripheral portion of the lid to the container body, and an annular supporting surface protruding above the sealing surface between the sealing surfaces. Since the contact portion between the upper end of the annular support surface and the peripheral portion of the lid is only in close contact with each other, the fluid passage formed by the communication passage provided on the sealing surface and the gap on both sides of the support is provided. However, while the liquid is prevented from flowing out at the contact portion, the contact portion is slightly separated from the pressurized gas and passes through the contact portion. Pressure gas such as inflation gas caused by heating can be effectively released to the outside of the container body without causing liquid leakage, and damage to the container body and the lid due to gas expansion can be prevented. Further, in this container, since a part of the opening end face of the container body is used as the sealing surface of the lid, the lid can be easily released as compared with the case where the entire opening end face is used as the sealing surface.

Another invention (the invention according to claim 7) is an application of the present invention to a container in which the container body and the sorghum are removable. In this case, the lid is composed of a ring having a ring-shaped inner groove and an outer groove on the lower surface, and a flexible sheet that fills the space inside the ring of the ring. A female screw is formed in the outer groove of the ring body, and the inner groove covers the groove opening by the peripheral edge of the sheet body. Meanwhile, the container body Has, on an open end face where the lid is sealed, an annular outer rib having a male screw that is screwed into the female screw in the outer groove of the lid, and an inner rib that enters the inner groove of the lid. I do. The sheet body is integrated with the container body by, for example, inserting the end of the peripheral portion into the outer groove and fixing it to the outer groove.

 When the container body and the lid are screwed into the outer rib and the outer groove and the container body is covered with the lid, the lower surface of the peripheral edge of the sheet body covering the groove opening of the groove in the ring and the opening of the container body Between the end surface and the inside of the container body, the inner gap part where the support part at the upper end of the inner rib of the container body is divided by the close contact part that is in close contact with the lower surface of the sheet peripheral part, and the ring body An outer gap portion that can communicate with the outside of the container body and the inner gap portion is formed between the outer groove and the outer rib of the container body. The contact portion prevents the liquid or the contents in the container body from passing through the gap, while the contact portion is forcibly separated from the pressurized gas generated in the container body, and A series of fluid passages are formed from the inside of the main body to the outside, where the inside and outside gaps communicate. In the container of still another invention (invention of claim 8), when the container main body and the lid are screwed together with the outer rib and the outer groove and the container main body is detachably covered with the lid, the ring body is closed. The lower surface of the peripheral portion of the sheet covering the groove opening of the groove is pressed against the opening end surface of the container body. With the support at the upper end of the inner lip of the container body pushed into the groove in the ring body, voids are formed on both the inside and outside of the close contact portion between the support and the periphery of the sheet body. Further, an outer gap portion that can communicate with the outside of the container body is formed between the outer groove of the ring body and the outer rib of the container body. Further, an inner communication passage communicating with the inside of the container body and the inner gap portion, and an outer communication passage communicating with the outside of the container body and the outer gap portion and the outer gap portion are provided on the opening end surface of the container body. Is formed.

The above-mentioned close contact portion prevents the liquid or the contents in the container main body from passing outside the container main body, while the close contact portion forcibly prevents the pressurized gas generated inside the container main body. And a series of fluid passages are formed from the inside of the container body to the outside, where the inner communication passage, the inner and outer clearances, the outer clearance, and the outer communication passage communicate with each other. The communication passage employed in the present invention has an outer end formed to have a smaller diameter than the inner end, or has a bottom sloped upward and outward to prevent liquid leakage and enable degassing. It is good to form.

 Such a container not only allows the pressurized gas to escape to the outside of the container body without causing liquid leakage, but also allows the sheet constituting the lid to also serve as a packing material, and is used repeatedly. A possible container can be provided.

 BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a perspective view showing an intermediate state of peeling off a lid of a container according to one embodiment of the present invention. FIG. 2 is a longitudinal sectional view of the container of FIG. Fig. 3 is a plan view of the container body. FIG. 4 is an enlarged sectional view of a flange portion of the container body. FIG. 5 is a partially enlarged plan view of the flange portion of the container body. FIG. 6 is an explanatory view showing the operation of the structure of the container, and shows the state of passage of the liquid. FIG. 7 is an explanatory view showing the operation of the structure of the container, and shows the passage of the fermentation gas. FIG. 8 is a plan view of a container used for a container according to another embodiment of the present invention _; FIG. 9 is a cross-sectional view showing a main part of a container according to another embodiment of FIG. FIG. 10 is a sectional view showing a main part of a container according to still another embodiment of the present invention. FIG. 11 is a cross-sectional view showing a main part of a lid used for the container of FIG. FIG. 12 is a partially enlarged sectional view of FIG. FIGS. 13A and 13B are outline views showing different examples of the communication path. FIG. 14 is a cross-sectional view of a container showing a conventional example.

 BEST MODE FOR CARRYING OUT THE INVENTION

 Hereinafter, the present invention will be described in detail based on illustrated embodiments.

 FIG. 1 is a perspective view showing a state in which a lid of a container according to an embodiment of the present invention is being removed, FIG. 2 is a longitudinal sectional view of the container, FIG. 3 is a plan view of the container main body, and FIG. 4 is a flange of the container main body. It is an expanded sectional view of a part.

Reference numeral 1 in the figure denotes a container body molded from a synthetic resin material, and has an annular flange portion 2 extending horizontally at an open end. The opening 3 and the flange 2 of the container body 1 are covered by a lid 4 formed of a sheet material. Will be

 The lid 4 is formed of a synthetic resin film sheet, and the peripheral edge 41 is thermally welded to the flange 2 of the container body 1 so as to be peelable. On the outer surface of the lid 4 including the peripheral portion 41 that is a sealing portion with the container body 1, characters, designs and the like are printed on the surface.

 The flange portion 2 of the container body 1 is provided with two sealing surfaces 21 and 22 at a required interval at an inner position and an outer position in a radial direction. The sealing surfaces 21 and 22 are formed along the opening 3 in a ring shape, and are portions where the peripheral edge 41 of the lid 4 is thermally welded.

 Between the sealing surfaces 21 and 22, a supporting surface 23 slightly projecting upward from the sealing surfaces 21 and 22 is annularly protruded. Annular retaining grooves 24, 25 are formed on both sides of the support surface portion 23. The support surface portion 23 is simply in close contact with the peripheral edge portion 41 of the lid, which is not in contact with the contact portion. When the lid peripheral edge 41 is welded to the sealing surfaces 21, 22, a slight tension is maintained at the portion between the inner and outer welding positions of the lid peripheral edge 41. Achieved by: The adhesion portion 8 may be provided with a fixing portion subjected to heat welding at appropriate intervals as necessary. The fixing part shall be of such a degree that it can be automatically peeled off by the pressure of the fermentation gas generated from inside the container body. Since the support surface portion 23 is located above the sealing surface portions 21 and 22, void portions 9 and 10 are formed above the retaining grooves 24 and 25 on both sides of the support surface portion.

 In the inner sealing surface 21 and the outer sealing surface 22, communication passages 6 and 7 are recessed at appropriate positions in the circumferential direction on the surfaces. In FIG. 3, communication paths 6 and 7 are provided at a position of 6 o'clock on the inner sealing surface 21 and at a position of 12 o'clock on the outer sealing surface 22. The inner communication passage 6 has an inner end opening into the inner space of the container body and an outer end opening into the inner cavity 9. The outer communication path 7 has an inner end opening to the outer space 10 and an outer end opening to the outer space.

 The operation of the container will be described with reference to FIGS.

The liquid contained in the container inside the container body due to tilting of the container, etc. When the liquid enters the gap 9 from above, the liquid accumulates in the inner retaining groove 24 (FIG. 6). The amount of liquid in the groove is small due to the small volume of the groove. For this reason, even if the container is tilted again, it does not reach the force for separating the close contact portion 8 between the support surface portion 23 and the lid peripheral portion 41 depending on the liquid pressure. Therefore, the inner gap 9 and the outer gap 10 do not communicate with each other, and the inner communication path 6 and the gap 9 and the outer communication path 7 and the gap 10 are in close contact with the liquid. And keep it shut off. The liquid accumulated in the inner retaining groove 24 is hidden by the printing on the surface of the lid peripheral portion 41 covering the flange portion 2, so that it cannot be seen from the outside.

 On the other hand, the fermentation gas or inflation gas generated from the stored material similarly enters the inner gap 9 from the inner communication passage 6. The gas that has entered the inner cavity 9 pushes the lid peripheral edge 41 around the contact portion 8 upward by its own pressure, and separates the lid peripheral edge 41 from the upper end of the support surface. For this reason, the gas passes through the sealing portion 8 and escapes to the outer space 10, passes through the outer space 10 and the outer retaining groove 25, and passes through the outer communication passage 7 located in the opposite direction by 180 degrees. It is released into the external space via (see Fig. 7).

 Experimental example

Two 2 mm-wide sealing surfaces and two 2 mm-wide retaining grooves on the open end face of a container with a flat circular outer diameter of 96 mm, height of 45 mm, and wall thickness of 10 mm A supporting surface having the same width of 2 mm was formed at the center of the opening end face in the width direction so as to protrude 0.5 mm (h in FIG. 4) above the sealing surface. In addition, two communication passages having a width of lmni and a depth of 0.1 mm were formed at the same positions on the sealing surface as in the above embodiment. The inside the container body accommodating the cabbage 1 0 0 g, an opening covered with a lid made of a PET film (thickness 0. 0 ⁵ mm), was Netsu溶wearing periphery the sealing surface portion.

 This sample was observed to be left at room temperature for 3 days.

 Even after 3 days, no deformation such as expansion of the lid or the container body was observed, and it was found that the fermentation gas was effectively discharged out of the container body.

The container was turned upside down during and after the observation period (3 [3]). On the other hand, although the liquid inside penetrated into the gap from the inside communication passage, the liquid did not flow into the outside gap by separating the contact portion between the support surface and the peripheral edge of the lid.

 As a result, it has been found that the present invention effectively prevents liquid leakage and gas release.

 In the present embodiment, the sealing surface of the container needs to be provided at least at two places, inside and outside. In the case where the opening end face for sealing the peripheral portion of the lid body is large, one or more more may be provided in the middle. In this case, a support surface portion is provided between the intermediate sealing surface portion and the inner and outer sealing surface portions, respectively, and an intermediate communication path is formed in the intermediate sealing surface portion.

 The retaining groove is not necessarily required in the container of the present embodiment, but at least an inner retaining groove is required in order to effectively retain the liquid in consideration of an emergency.

 FIG. 8 is a plan view of a container main body according to another embodiment of the present invention, and FIG. 9 is an enlarged view showing a main part of the container. In both figures, the same members as those of the first embodiment are denoted by the same reference numerals in the 100s.

 In this embodiment, no stagnation groove is formed between the sealing surface portions 121, 122 and the support surface portion 123. Instead, between the sealing surfaces 1 2 1, 1 2 2 and the support surface 1 2 3, the above-mentioned voids 1 0 9 and 1 10 are formed on both the inside and outside of the support surface 1 2 3. Distance is placed.

 The pressurized gas such as fermentation gas generated inside the container body 101 enters the gap through the inner communication passage 106, where it is pushed up slightly to support the contact portion 108 at the peripheral edge of the lid. It slips through the face portion 123 and passes through the outer gap 110 (see Fig. 8), and escapes from the outer communication passage 107 outside the container body.

Even if the internal liquid enters the inner communication passage 106, it does not push up the contact portion 108, so that it does not leak out of the support surface portion 123. Also, even if the vehicle could get over the support surface section 123, it would have to go through the outer gap 110 through 180 degrees and enter the outer communication passage, so almost all of the container body Never go outside. The container according to the present embodiment is desirably used as a container for storing contents having relatively low water content.

 10 to 12 show yet another embodiment of the present invention. FIG. 10 is a cross-sectional view showing a main part of a container to which the present invention is applied, FIG. 11 is a cross-sectional view showing a main part of a lid used for this, and FIG. 12 is a part of FIG. It is an expanded sectional view. In the figure, the same reference numerals as those in the first embodiment denote the same or corresponding members in the 200s.

 In the present embodiment, a container is provided in which the lid body 204 in which the ring body 241 and the sheet body 2445 are integrated can be detachably attached to the container body 201. The ring body 241 is formed of a synthetic resin material, and has an annular inner groove 244 and a deeper outer groove 242 on the lower surface. A female screw 24 3 is formed in the outer groove 2 42. The sheet body 245 is formed of a synthetic resin film sheet material having a slight elasticity, and is stretched over the inner space of the ring body 241. The peripheral portion 245a of the sheet body 245 covers the groove opening of the inner groove 244 so as to cover the groove opening, and the end is fixed to the inner wall of the outer groove.

 The container main body 201 has an open end face 202 (flange portion) in which the lid 204 is sealed, and a male screw screwed with the female screw 243 in the outer groove of the lid 204. An annular outer rib 226 having a screw 227 is provided, and an inner rib 223 entering the inner groove 244 of the lid 204 is provided. The outer rib 2 26 and the outer groove 2 42 have a gap 206 (206 C) that allows the passage of a pressurized gas when the screws 2 27 and 2 43 are screwed together. The inner rib 2 23 has a chevron shape in cross section, and when it enters the inner groove 2 4 4, it comes into close contact with the corresponding portion of the sheet body edge 2 4 5 a and pushes it up to lift the sheet body edge. The contact portion 208 of the 245a is positioned in the inner groove, and voids 209 and 210 through which the pressurized gas can pass are formed on both inside and outside.

 Similarly, when the lid 204 is covered by the container body 201, a pressure gas is similarly formed between the lower surface of the peripheral portion of the sheet body and the opening end face 102 of the container body 201. A gap 206 (206 A, 206 B) that can pass through is formed.

Therefore, when the lid 204 is attached to the container body 201, this container becomes Inner gaps 206 A and 206 B are formed between the lower surface of the sheet body peripheral portion 245 a and the opening end surface 202 of the container body 201, and the outside of the ring body 241. An outer gap portion 206C through which the pressurized gas can pass is provided between the groove 242 and the outer rib 226 of the container body 201. Then, at the location of the inner groove 244 of the lid 204, the upper end of the inner rib of the container body 201 is in close contact with the lower surface of the sheet body peripheral portion 245a covering the inner groove 244. At the same time as being pushed into the groove, a close contact portion 208 for blocking the inner gap portions 206A and 206B is formed.

 Therefore, the liquid contained in the container body 201 penetrates into the innermost inner gap portion 206A generated between the lower surface of the peripheral portion of the sheet body and the end face of the opening. The leak is prevented by the close contact portion 208. On the other hand, the fermentation gas and the expansion gas due to heating push up the sheet body peripheral portion 245a of the close contact portion 208 from the inner gap portion 206A and the inner gap portion 209, and It gets over the upper end of the rib and enters the outer gap 206 B between the lower surface of the sheet main body peripheral portion and the opening end surface. From here, it is further guided to the outside of the container body through a gap 206C between the outer groove 242 and the outer rib 226.

 As a modified example of the embodiment of FIGS. 10 to 12, the lower surface of the peripheral portion of the sheet body is pressed against the opening end surface of the container body and sealed without forming an inner gap portion. An inner communication passage similar to that shown in the first embodiment may be formed in the inner gap. Naturally, these communication passages communicate with gaps formed on both sides of the support portion of the inner rib. In addition, an outer communication passage communicating with the outer clearance is also formed on the opening end face outside the outer rib. According to this modification, the hermeticity of the sealing portion between the lid and the container body can be further improved.

 In any of the embodiments including the first embodiment, the communication path can be formed such that the outer end is smaller in diameter than the inner end in plan view as shown in FIG. 13A, for example. . In addition, it is preferable that the communication passage has a bottom surface which is inclined upward toward the outside. In any case, the liquid in the container body is harder to leak outside.

In the embodiment of FIGS. 10 to 12 and its modified embodiments, the communication path is It may extend obliquely in a direction suitable for tightening the screws of the lid and the container body. FIG. 13B schematically shows a cross section of the communication path for a screw that closes clockwise.

 The container of the embodiment shown in FIGS. 10 to 12 can be used repeatedly as long as the flexibility of the sheet body is not impaired, and can be used for a container having a relatively large diameter. In addition, liquid leakage can be prevented by using a part of the component of the lid without using packing.

 The cross-sectional shape of the inner lip, the fixing position of the peripheral edge portion of the sheet member, and the shape and direction of the screw of the outer lip do not matter as long as the above-mentioned action is exerted.

 Industrial applicability

 The container according to the present invention, like a container containing fermented products such as kimchi and pickles, and a sealed container for microwave cooking, is filled with fermentation gas or inflation gas due to the passage of time or heating inside the container body. It is suitable as a container in which only the fermentation gas and inflation gas need to escape to the outside without leaking the liquid content in the contents.

Claims

The scope of the claims  1. Equipped with a container body and a lid that covers the opening of the container body, the liquid or the contents in the container body are hardly leaked to the outside at the sealing portion between the container body and the lid. A container provided with a fluid passage capable of leaking a pressurized gas such as a fermentation gas or an expansion gas generated by heating in a microwave oven,  In the lid, at least the sealing portion with the container body is formed of a flexible material,  The container body has a ring-shaped sealing surface on the opening end face where the lid is sealed, and a plurality of sealing surfaces provided at intervals in the radial direction, and a ring formed between the sealing surfaces in the same manner. A support surface protruding above the sealing surface,  The lid and the container body are brought into close contact with the peripheral surface of the lid, which covers the open end face so that voids are formed on both sides of the inside and outside of the support surface, against the support surface, and against the sealing surface. Sealed,  In addition, a communication path is formed in the sealing surface portion to traverse the sealing surface portion and communicate the inside of the container body or the outside of the container body with the gap.  The fluid passage formed by the communication passage and the cavity forms an internal cutoff passage that seals a liquid or a container in the container body at a contact portion between the support surface portion and the peripheral portion of the lid, while forming a container. The container, wherein the contact portion is forcibly separated from the pressure gas generated in the main body and allowed to pass therethrough, thereby forming a series of fluid passages from the inside to the outside of the container body.  2. In the container according to claim 1,  On the opening end face between the supporting surface portion and the sealing surface portion, an annular liquid retaining groove that is sunk below the sealing surface portion is formed, and the gap portion is provided above the liquid retaining groove.  A container characterized by the above-mentioned. 3. On the open end face between the left and right side walls of the support surface and the sealing surface A non-contact surface portion with the lid peripheral edge portion is provided, and the gap is provided above the non-contact surface portion;  The container according to claim 1 or 2.  4. The container according to claim 1, wherein the lid is entirely formed of a flexible sheet material.  5. The sealing surface portion is provided on each of an inner peripheral region and an outer peripheral region of an opening end surface of the container body,  The support surface portion is provided in an intermediate region located between the inner and outer peripheral regions,  The container according to claim 1 or 2.  6. Sealing is peelable heat welding,  The container according to claim 1 or 2.  7. Equipped with a container body and a lid that covers the opening of the container body, the liquid or the contents in the container body are hardly leaked to the outside at the sealing portion between the container body and the lid. A container provided with a fluid passage capable of leaking a pressurized gas such as a fermentation gas or an expansion gas generated by heating in a microwave oven,  The lid body includes a ring body having an annular inner groove and an outer groove on a lower surface, and a flexible sheet body that fills a ring inner space of the ring body.  The outer groove of the ring body has an internal thread formed in the groove, the inner groove covers the groove opening with the peripheral edge of the sheet body,  Further, the container body has an annular outer rib having a male screw that is screwed with a female screw in the outer groove of the lid at an opening end face where the lid is sealed, and an inner groove that enters the inner groove of the lid. With ribs, When the container body and the lid are screwed together with the outer rib and the outer groove and the container body is removably covered with the lid, the lower surface of the peripheral portion of the sheet body covering the groove opening of the groove in the ring and the container body Between the opening end surface of the container body and the inside of the container body. The inner gap part where the support at the upper end of the inner rib of the container body is separated by the sealing part which is in close contact with the lower surface of the sheet peripheral edge, and the ring body Between the outer groove and the outer rib of the container body, an outer part that can communicate with the outside of the container body and the inner clearance Gaps are formed respectively,  The close contact portion prevents the liquid or the contents in the container body from passing through the gap, while the close contact portion is forcibly separated from the pressurized gas generated in the container body, and A container, wherein a series of fluid passages are formed in which the inside and outside gaps communicate from the inside of the main body to the outside. 8. Equipped with a container body and a lid that covers the opening of the container body, the liquid or the contents in the container body are hardly leaked to the outside at the sealing part between the container body and the lid. A container provided with a fluid passage through which a pressurized gas such as an enzymatic gas or an expanding gas generated by heating in a microwave oven can leak,  The lid body includes a ring body having an annular inner groove and an outer groove on a lower surface, and a flexible sheet body that fills a ring inner space of the ring body.  The outer groove of the ring body has an internal thread formed in the groove, and the inner groove covers the groove opening with the peripheral edge of the sheet body.  Further, the container body has an annular outer rib having a male screw that is screwed with a female screw in the outer groove of the lid at an opening end face where the lid is sealed, and an inner groove that enters the inner groove of the lid. With ribs,  When the container body and the lid are screwed together with the outer rib and the outer groove and the container body is removably covered with the lid, the lower surface of the peripheral portion of the sheet body that covers the groove opening of the groove in the ring is the container body. While being pressed against the opening end face of the container body, the support portion at the upper end of the inner rib of the container body pushed into the inner groove of the ring body forms voids on both the inside and the outside of the close contact portion between the support portion and the peripheral portion of the sheet body. In addition, an outer gap portion that can communicate with the outside of the container body is formed between the outer groove of the ring body and the outer lip of the container body,  An inner communication passage communicating with the inside of the container body and the inner space, and an outer communication passage communicating with the outside of the container body and the outer space and the outer clearance are formed on the opening end surface of the container body. , The above-mentioned close contact portion prevents the liquid or the contents in the container main body from passing outside the container main body, while the pressurized gas generated in the container main body. , The close contact portion is forcibly separated from the container body, and a series of fluid passages are formed from the inside of the container body to the outside, in which the inner communication passage, the inner and outer clearances, the outer clearance, and the outer communication passage communicate with each other. ,  A container characterized by the above-mentioned. 9. The container according to any one of claims 1, 2, 7, and 8, wherein the communication path has an outer end formed to have a smaller diameter than an inner end.  10 The communication passage has a bottom surface that is upwardly sloped outward. (B) The container according to any of claims 2, 7, or 8 ₍  1 1. The sheet is a synthetic resin film sheet,  The container according to claim 9.  12. The container according to claim 8, wherein an edge of the peripheral edge of the sheet body covering the inner groove is fixed in the outer groove.