JP6977426B2 - Container with interior bag - Google Patents

Description

The present invention relates to a container with an interior bag including a container in which a storage portion for storing contents such as rice or noodles is formed, and an interior bag for storing additional contents such as sauce or ingredients.

Conventionally, many of the contents such as cooked or semi-cooked foods such as rice or noodles are stored in a plastic container such as a tray and sealed with a lid made of a film or the like on the market. The contents are housed in a plastic container and heated by a microwave oven or the like. Such a container has a structure that degass the expanded air inside the container when heated by a microwave oven (see Patent Document 1).

Further, as a container for a microwave oven, a container with an inner bag in which an inner bag for storing additional contents such as a sauce or an ingredient is arranged inside the container has also been developed. When using such a container with an interior bag, first, the interior bag is taken out from the container, the interior bag is opened, and the additional contents in the interior are poured onto the contents on the container. Next, the container containing the contents is heated by a microwave oven, and the contents are heated together with the additional contents.

However, it is complicated to take out the inner bag from the container, open it, pour the additional contents from the inner bag onto the contents in the container, and then heat the contents together with the additional contents in a microwave oven.

In such a case, without removing the inner bag from the container, simply leave the inner bag in the container and heat the container and the inner bag with a microwave oven, and the bag will be automatically added to the heated contents. It would be nice to be able to pour warm additional contents.

Jikkenhei 3-87688 Gazette

The present invention has been made in consideration of such a point, and simply by heating with a microwave oven while the inner bag is placed in the container, the additional contents heated on the heated contents are automatically added. The purpose is to provide a container with an interior bag that can be hung on the target.

The present invention covers a container including a body portion defining a storage portion for storing the contents in an exposed state, a flange portion connected to the upper portion of the body portion, and the storage portion of the container. An interior bag is provided via an inner lid having an opening, provided with a fitting lid fitted to the flange portion, and an interior bag for storing additional contents is provided on the inner lid, and the interior bag is heated. It has an opening portion that opens when the internal pressure increases and discharges the additional contents, and the interior bag is arranged on the inner lid so that the opening portion faces downward and takes a position corresponding to the opening. It is a container with an internal bag.

The present invention covers a container including a body portion defining a storage portion for storing the contents in an exposed state, a flange portion connected to the upper portion of the body portion, and the storage portion of the container. The fitting lid fitted to the flange portion is provided, and an interior bag for storing additional contents is provided on the back surface of the fitting lid, and the interior bag is opened when the internal pressure increases due to heating, and the addition is performed. The inner bag is a container with an inner bag having an opening portion for discharging the contents, and the opening portion is fixed downward to the back surface of the fitting lid.

The present invention includes a body portion that defines a storage portion for storing the contents in an exposed state, a container including a flange portion connected to the upper portion of the body portion, and an outer bag for storing the container. An interior bag for storing additional contents is provided on the upper back surface of the outer bag, and the interior bag has an opening portion for opening when the internal pressure rises due to heating and discharging the additional contents. Is a container with an inner bag, which is fixed to the inner surface of the upper part of the outer bag so that the opening portion faces downward and the storage portion faces.

The present invention covers a container including a body portion defining a storage portion for storing the contents in an exposed state, a flange portion connected to the upper portion of the body portion, and the storage portion of the container. A lid arranged on the upper surface of the flange portion is provided, and a joint portion for joining between the upper surface of the flange portion and the lower surface of the lid is formed between the upper surface of the flange portion and the lower surface of the lid. An interior bag for storing additional contents is provided on the back surface of the lid, and the interior bag has an opening portion for opening when the internal pressure rises and discharging the additional contents, and the interior bag has the above-mentioned interior bag. A container with an inner bag in which the opening portion is fixed downward to the back surface of the lid.

The present invention includes a container including a body portion defining a storage portion for storing the contents in an exposed state, a flange portion connected to the upper portion of the body portion, and a shrink film for storing the container. An interior bag for storing additional contents is provided on the upper back surface of the shrink film, and the interior bag has an opening portion that opens when the internal pressure rises and discharges the additional contents. Is a container with an inner bag, which is fixed to the upper back surface of the shrink film so that the opening portion faces downward and the storage portion faces.

The present invention covers a container including a body portion defining a storage portion for storing the contents in an exposed state, a flange portion connected to the upper portion of the body portion, and the storage portion of the container. A lid made of a film material arranged on the upper surface of the flange portion is provided, and the upper surface of the flange portion and the lower surface of the lid are joined between the upper surface of the flange portion and the lower surface of the lid. A portion is formed, a portion of the lid projects downward from the lid, has a pair of side portions, the base end is sealed, and an interior bag is formed consisting of a gassho portion for storing additional contents. The inner bag is a container with an inner bag having an opening portion that opens when the internal pressure rises due to heating and discharges the additional contents.

The present invention is a container with an interior bag in which at least one of rice, porridge, noodles, grilled food, and fried food is stored as contents in the storage portion in the container.

The present invention is a container with an interior bag in which seasonings, sauces or ingredients are stored as additional contents in the interior bag.

In the present invention, the opening portion is a container with an inner bag having a linear opening portion formed of heat-generating ink.

In the present invention, the opening portion is a container with an inner bag having a linear opening portion formed from a half cut.

In the present invention, the opened portion is a container with an inner bag having a linear heat-sealed portion formed by a heat seal.

In the container with an inner bag according to the present invention, the heated additional contents can be automatically hung on the heated contents simply by heating with a microwave oven while the inner bag is placed in the container. can.

FIG. 1 is a side sectional view showing a container with an inner bag according to the first embodiment of the present invention. FIG. 2 is a diagram showing members constituting a container with an inner bag. FIG. 3 is a diagram showing a container with an inner bag, an inner lid, and an inner bag. FIG. 4 is a perspective view showing an interior bag. FIG. 5 is a perspective view showing a modified example of the interior bag. FIG. 6 is a cross-sectional view showing a modified example of the container with an inner bag. FIG. 7 is a side sectional view showing a container with an inner bag according to the second embodiment of the present invention. FIG. 8 is a perspective view showing a container with an inner bag. FIG. 9 is a perspective view showing the interior bag and the fitting lid 30. FIG. 10A is a side sectional view showing a container with an inner bag according to a third embodiment of the present invention. FIG. 10B is a cross-sectional view showing a sealed portion of the outer bag. FIG. 10C is a plan view of the outer bag. FIG. 11 is a side sectional view showing a container with an inner bag according to a fourth embodiment of the present invention. FIG. 12 is a plan view showing a container with an inner bag. FIG. 13 is a side sectional view showing a container with an inner bag. FIG. 14 is a side sectional view showing a lid. FIG. 15 is a side sectional view showing a container with an inner bag according to the fifth embodiment of the present invention. FIG. 16A is a side sectional view showing a modified example of the opened portion of the inner bag. FIG. 16A is a perspective view showing a modified example of the opened portion of the inner bag. FIG. 16C is a diagram showing a modified example of the linear opening portion of the inner bag. FIG. 16D is a diagram showing a modified example of the linear opening portion of the inner bag. FIG. 16E is a diagram showing a modified example of the linear opening portion of the inner bag. FIG. 16F is a diagram showing a modified example of the linear opening portion of the inner bag. FIG. 17 is a cross-sectional view showing the layer structure of the interior bag. FIG. 18A is a perspective view showing a modified example of the opened portion of the inner bag. FIG. 18B is a diagram showing a modified example of the linear opening portion of the inner bag. FIG. 18C is a diagram showing a modified example of the linear opening portion of the inner bag. FIG. 18D is a diagram showing a modified example of the linear opening portion of the inner bag. FIG. 18E is a diagram showing a modified example of the linear opening portion of the inner bag. FIG. 18F is a cross-sectional view showing the layer structure of the interior bag. FIG. 19 is a perspective view showing a modified example of the opened portion of the inner bag. FIG. 20A is a side sectional view showing a container with an inner bag according to a sixth embodiment of the present invention. 20B is an enlarged view of the interior bag shown in FIG. 20A. FIG. 20C is a side sectional view showing the laminated body constituting the lid. FIG. 20D is a side sectional view showing the laminated body constituting the lid. FIG. 21 is a diagram showing a manufacturing process of a lid and an inner bag. FIG. 22 is a diagram showing a mounting structure of the interior body.

<First Embodiment>
Hereinafter, the first embodiment of the present invention will be described with reference to FIGS. 1 to 6. In the drawings attached to the present specification, the scale, aspect ratio, etc. may be appropriately changed from those of the actual product and exaggerated for the convenience of illustration and comprehension.

In addition, the terms such as "parallel", "orthogonal", and "identical" and the values of length and angle, which specify the shape and geometric conditions and their degrees, which are used in the present specification, are strictly referred to. It is interpreted to include the range where similar functions can be expected without being bound by meaning.

[Container with interior bag]
First, the outline of the container 10 with an inner bag will be described with reference to FIGS. 1 to 6. FIG. 1 is a side sectional view showing a container 10 with an inner bag, FIG. 2 is a view showing a member constituting the container 10 with an inner bag, and FIG. 3 is a view showing an inner lid 11 and an interior of the container 10 with an inner bag. 5 is a view showing a bag 5, FIG. 4 is a perspective view showing an interior bag 5, FIG. 5 is a perspective view showing an interior bag 5, and FIG. 6 is a side sectional view showing a modified example of a container 10 with an interior bag. Is.

The container 10 with an inner bag is between the container 20 in which the storage portion 25 for storing the contents 1 is formed, the fitting lid 30 that covers the storage portion 25 of the container 20, and the container 20 and the fitting lid 30. It is provided with an inner lid 11 interposed therebetween. Further, the steam generated in the storage portion 25 due to the heating of the content 1 in the container with the inner bag is removed from between the flange portion 12 of the inner lid 11 and the fitting portion 32 of the fitting lid 30 as described later. It is discharged toward. Further, an interior bag 5 for storing the additional contents 5a is provided on the inner lid 11.

In addition, in this specification, "joining" is a concept including both welding and adhesion. By "welding" is meant attaching one member and the other member by at least partially melting at least one of one member and the other. Further, "adhesion" means attaching one member to the other member by using a component such as an adhesive which is separate from one member and the other member.

The contents contained in the container 20 contain at least water. Examples of the content 1 include retort foods, frozen foods, refrigerated foods, and the like. Examples of foods include prepared foods such as rice, noodles, porridge, grilled foods, and fried foods. In these contents, since the water evaporates with heating and the pressure of the storage portion 25 of the container 20 increases, the steam in the storage portion 25 is fitted to the flange portion 12 of the inner lid 11 and the fitting lid 30. It is discharged outward from between the joint portion 32.

Further, as the additional content 5a stored in the interior bag 5 provided on the inner lid 11, a seasoning, a sauce, and an ingredient poured on the content 1 can be considered.

The container 10 with an inner bag configured in this way is covered with a shrink film 35 made of polypropylene, polystyrene, polyethylene terephthalate, etc. as a whole to protect it from the outside, and is firmly fixed by the shrink film 35. To.

Hereinafter, the container 20, the inner lid 11, the fitting lid 30, and the shrink film 35 will be described.

〔container〕
As shown in FIGS. 1 to 3, the container 20 includes a body portion 21 that defines the storage portion 25, and a flange portion 22 that is connected to the upper portion of the body portion 21 over a circumference. The body portion 21 includes, for example, a bottom surface 21a and a side surface 21b erected from the bottom surface 21a so as to extend around the outer edge of the bottom surface 21a. As shown in FIG. 1, an upwardly raised raised portion 21c may be formed on the bottom surface 21a. The flange portion 22 is connected to the upper edge of the side surface 21b of the body portion 21 and extends horizontally toward the outside. In the present specification, terms such as "side surface", "upper surface", "upper edge", "upper surface", "lower surface", and "horizontal direction" described later are used so that the storage portion 25 of the container 20 opens upward. It represents the position and direction of the container with an inner bag 10, the container 20, the inner lid 11, the fitting lid 30, and their components based on the state in which the container with a lid 10 is placed. Further, the "outside" is the side away from the center of the storage portion 25 of the container 20 in a plan view. Further, the “inside” described later is a side closer to the center of the storage portion 25 of the container 20.

In the present embodiment, the flange portion 22 has a substantially rectangular (substantially rectangular) contour as shown in FIG. For example, the flange portion 22 has a pair of edge portions 22a, a pair of edge portions 22b, and a corner portion 22c located between the edge portion 22a and the edge portion 22b. The direction in which the edge portion 22a extends and the direction in which the edge portion 22b extends are orthogonal to each other. In FIG. 2, reference numeral L1 represents the distance between the outer edge of one edge 22b and the outer edge of the other edge 22b, and reference numeral L2 is the outer edge of one edge 22a and the other edge 22a. Represents the distance to the outer edge of.

As shown in FIG. 2, the corner portion 22c may have a curved shape that is convex toward the outside. Such a corner portion 22c can be obtained, for example, by chamfering the corner portion of the flange portion having a rectangular contour. Although not shown, the corner portion 22c may have an angular shape. Further, some of the plurality of corners 22c may be tabs protruding outward from the other corners 22c.

Note that FIG. 2 shows an example in which the pair of edge portions 22a are parallel to each other, the pair of edge portions 22b are parallel to each other, and the edge portions 22a and the edge portions 22b are orthogonal to each other. It is not limited to this. For example, the pair of edge portions 22a may be non-parallel to each other, or the pair of edge portions 22b may be non-parallel to each other. Further, the angle formed by the edge portion 22a and the edge portion 22b may deviate from 90 degrees.

In FIG. 1, reference numeral T represents the thickness of the container 20. The thickness T of the container 20 is, for example, 0.1 mm or more and 1.0 mm or less. As the thickness T of the container 20 becomes smaller, for example, when the thickness T of the container 20 is 100 μm or more and 300 μm or less, the side surface 21b and the flange portion 22 of the container 20 are likely to be deformed, and when the thickness T is 200 μm or less. Deformation is more likely to occur.

Further, when the container 20 contains a rubber component or an ethylene component, the container 20 is likely to be deformed.

When the container 20 is made of block polypropylene containing, for example, a rubber component or an ethylene component, its rigidity and heat resistance are lower than those of homopolypropylene containing no rubber component or ethylene component.

As a method for producing the container 20, an injection molding method or a sheet molding method can be adopted. When the container 20 is manufactured by injection molding, it is preferable that the height H1 of the container 20 is set to the above-mentioned distance L2 or less in order to ensure moldability. The sheet molding method is a method of pressing a mold against a plastic sheet to form a desired shape on the sheet. Examples of the material constituting the container 20 include plastics such as polystyrene, polypropylene, and polyethylene terephthalate.

Further, when the container 20 is manufactured by processing a plastic sheet by a deep drawing molding method, which is a kind of sheet molding method, a sheet having a thickness of 100 μm or more and 300 μm or less can be used. Examples of the laminated body constituting the sheet include CPP / CNy / CPP and LLDPE / CNy / LLDPE. Here, "CPP" is unstretched polypropylene, "CNy" is unstretched nylon, and "LLDPE" is linear low-density polyethylene.

[Inner lid]
Next, the inner lid 11 provided so as to cover the storage portion 25 of the container 20 will be described.

The inner lid 11 has an inner lid main body 11a having an opening 15 formed in the central portion, a side surface 11b extending diagonally upward from the peripheral edge of the inner lid main body 11a, and a flange portion 12 connected to the upper part of the side surface 11b. The inner lid 11 is made of polypropylene, polystyrene, or the like as a whole.

Further, the side surface 11b of the inner lid 11 overlaps with the inner surface of the side surface 21b of the container 20, and the flange portion 12 of the inner lid 11 is fitted into the flange portion 22 of the container 20 from the outside.

Further, the inner lid main body 11a of the inner lid 11 is arranged with an interior bag 5 in which the additional contents 5a are stored as described above. In this case, the interior bag 5 has an opening portion 8 that opens when the internal pressure rises due to heating and discharges the additional content 5a, but the interior bag 5 has the opening portion 8 facing downward and corresponds to the opening 15. It is arranged on the inner lid main body 11a so as to take a position to be used.

[Matching lid]
The fitting lid 30 is provided on the inner lid 11 so as to cover the storage portion 25 of the container 20. In this case, the fitting lid 30 has a lid main body 31 and a fitting portion 32 extending outward from the peripheral edge of the lid main body 31. The fitting lid 30 is provided on the inner lid 11 so as to cover the storage portion 25, and the fitting portion 32 is fitted into the flange portion 12 of the inner lid 11 from the outside in this way. 25 is covered by the fitting lid 30 via the inner lid 11.

The fitting lid 30 is made of polypropylene, polystyrene, or the like as a whole.

[Interior bag]
Next, the interior bag 5 containing the additional contents 5a will be described. As shown in FIGS. 4 and 5, the interior bag 5 containing the additional contents 5a is configured by folding a flexible film and has a pair of peripheral seal portions 6 and 6 formed at both ends. The interior bag 5 is obtained by folding the flexible film as described above, storing additional contents inside, and then heat-sealing both ends of the opening. In this case, peripheral seal portions 6 and 6 are formed at both ends of the heat seal. Further, the interior bag 5 has a back sticking portion 7, and the back sticking portion 7 is provided with a linear sealing portion 7a to form a linear sealing portion 7a.

The linear seal portion 7a formed on the back-pasted portion 7 of the interior bag 5 has a bent portion 9 including a portion bent toward the accommodating portion side of the interior bag 5. When the interior bag 5 is heated and the internal pressure increases, the interior bag 5 is opened from the bent portion 9 of the linear seal portion 7a, and the additional content 5a is discharged outward from the opened bent portion 9. It is supposed to be done. Therefore, the bent portion 9 of the interior bag 5 functions as an opening portion 8 for opening the interior bag 5.

When a less viscous content such as a seasoning or a sauce poured onto the content 1 is used as the additional content 5a, the length l1 of the bent portion 9 is relatively small, and the interior bag 5 is used. Is not easily opened (see FIG. 4).

On the other hand, when a highly viscous content such as an ingredient poured onto the content 1 is used as the additional content 5a, the length l2 of the bent portion 9 is relatively large, and the additional content 5a It is designed to be easily discharged to the outside (see FIG. 5).

As described above, the interior bag 5 having such a configuration is placed on the inner lid main body 11a of the inner lid 11 with the opening portion 8 facing downward. In this case, the opening portion 8 is placed in the opening 15 of the inner lid main body 11a. Take the corresponding position.

Next, the flexible film constituting the interior bag 5 will be described. The flexible film includes at least a base material layer and a sealant layer. The sealant layer constitutes the inner surface of the interior bag 5. As the material constituting the base material layer, for example, polyester such as polyethylene terephthalate and polybutylene terephthalate, polyamide such as nylon, polypropylene and the like can be used. The thickness of the base material layer is 5 μm or more and 50 μm or less. The base material layer is preferably stretched, and more preferably biaxially stretched. Further, the flexible film may include a plurality of base material layers. Examples of the material constituting the sealant layer include polyethylene, polypropylene, ethylene-propylene block copolymer, and a blend resin of polyethylene and polypropylene. The sealant layer may be a single layer or a multilayer layer. The thickness of the sealant layer is 20 μm or more and 100 μm or less. The sealant layer is preferably unstretched. The flexible film may further contain other layers. As the other layer, an appropriate layer can be selected according to the required performance such as water vapor and other gas barrier properties, light shielding properties, and various mechanical strengths. For example, as the gas barrier layer, a vapor deposition layer of a metal oxide such as aluminum oxide or an inorganic oxide such as silicon oxide, an ethylene-vinyl alcohol copolymer (EVOH), a polyvinylidene chloride resin (PVDC), and a fat such as nylon MXD6. Group polyamide and the like may be provided. As described above, the flexible film constituting the inner bag 5 may have a plurality of base material layers. Further, when the sealant layer is made of a blended resin of polyethylene and polypropylene, the easy peeling property is improved.

[Shrink film]
Further, the container 10 with an inner bag having the container 20 and the fitting lid 30 fitted into the flange portion 22 via the inner lid 11 so as to cover the storage portion 25 of the container 20 is made of stretched polypropylene as a whole. It is covered with a shrink film 35 made of polystyrene or polyethylene terephthalate to protect it from the outside. Then, the container 10 with the inner bag is firmly fixed from the outside by the shrink film 35 as a whole. In this way, the shrink film 35 can protect the container 10 with an inner bag from the outside. Therefore, it is possible to prevent foreign substances, insects, and the like from being mixed into the container with the inner bag 10 and prevent unauthorized opening of the container 10 with the inner bag.

<Action of the present embodiment>
Next, the operation of the present embodiment having such a configuration will be described.

First, a container 20 having an integrally formed body portion 21 and a flange portion 22 is prepared by an injection molding method using a thermoplastic resin such as polypropylene.

Next, the contents 1 described above are stored in the storage portion 25 of the container 20 in an exposed state, and the inner lid 11 is attached so as to cover the storage portion 25 of the container 20. At this time, the flange of the inner lid 11 is attached to the flange portion 22. The portion 12 is fitted.

After that, the interior bag 5 containing the additional contents 5a is placed on the inner lid main body 11a of the inner lid 11. At this time, the interior bag 5 is placed on the inner lid main body 11a of the inner lid 11 so that the opening portion 8 faces downward and the inner lid 11 takes a position corresponding to the opening 15.

Next, the fitting lid 30 is attached so as to cover the storage portion 25 of the container 20, and at this time, the fitting portion 32 of the fitting lid 30 is fitted into the flange portion 12 of the inner lid 11.

In this way, a container 10 with an inner bag including a container 20, an inner lid 11, and a fitting lid 30 is obtained, and the container 10 with an inner bag is subsequently covered with a shrink film 35 as a whole to protect it from the outside. Will be done. Further, the container 10 with an inner bag is protected by the shrink film 35.

Upon use, the user puts the container 10 with an inner bag covered with the shrink film 35 into a microwave oven (not shown). Next, the container 10 with an inner bag is heated by a microwave oven. At this time, the water contained in the contents inside the storage portion 25 of the container 20 evaporates and the pressure inside the storage portion 25 increases. Next, the steam in the storage portion 25 enters from the storage portion 25 through the opening 15 of the inner lid 11 onto the inner lid 11, and then between the flange portion 12 of the inner lid 11 and the fitting portion 32 of the fitting lid 30. Is released outward from. Further, the steam released to the outside of the fitting portion 32 of the fitting lid 30 then goes out from the micropores or pores formed in advance in the shrink film 35.

During this time, the additional content 5a in the interior bag 5 placed on the inner lid main body 11a of the inner lid 11 is also heated, and the water contained in the additional content 5a evaporates to increase the pressure in the interior bag 5. ..

Next, the steam in the inner bag 5 breaks the opening portion 8 of the inner bag 5. In this way, the interior bag 5 is opened from the opening portion 8, and the additional contents 5a in the interior bag 5 are discharged outward from the opening portion 8.

At this time, since the opening portion 8 of the interior bag 5 faces downward and takes a position corresponding to the opening 15, the additional content 5a in the interior bag 5 falls downward from the opening portion 8 through the opening 15 and is stored. It is poured onto the content 1 in the part 25.

For example, when the content 1 in the storage portion 25 is noodles such as spaghetti and the additional content 5a in the interior bag 5 is a meat sauce poured into the spaghetti, it is heated on the heated spaghetti 1 in the storage portion 25. The meat sauce 5a that has been made can be automatically hung.

As described above, according to the present embodiment, when the container 10 with an inner bag is heated in a microwave oven, the inner bag 5 is taken out from the container 10 with the inner bag in advance and the additional contents 5a are placed in the storage portion 25 of the container 20. It is not necessary to put the container 20 in the microwave after pouring it on the contents 1 of the above. The stored contents 1 can be heated, and the heated additional contents 5a can be automatically hung on the heated contents 1.

<Modified example of this embodiment>
Next, a modified example of the present embodiment will be described with reference to FIG. In the embodiment shown in FIGS. 1 to 5, an example is shown in which the inner lid 11 is attached by covering the storage portion 25 of the container 20 and the flange portion 12 of the inner lid 11 is fitted into the flange portion 22 of the container 20. However, the present invention is not limited to this, and the container 20 may be placed on the flange portion 22 without fitting the flange portion 12 of the inner lid 11. Next, the fitting lid 30 is attached so as to cover the inner lid 11, and the fitting portion 32 of the fitting lid 30 is fitted into the flange portion 22 of the container 20 and the flange portion 12 of the inner lid 11 (see FIG. 6). ..

<Second embodiment>
Next, a second embodiment of the present invention will be described with reference to FIGS. 7 to 9. In the second embodiment shown in FIGS. 7 to 9, the fitting lid 30 is provided so as to cover the storage portion 25 of the container 20, and the fitting lid 30 is fitted without interposing the inner lid 11 in the flange portion 22 of the container 20. The fitting portion 32 of the lid 30 is fitted.

Further, an interior bag 5 containing the additional contents 5a is attached to the back surface of the fitting lid 30.

Other configurations are substantially the same as those of the first embodiment shown in FIGS. 1 to 6.

In the second embodiment shown in FIGS. 7 to 9, the same parts as those in the first embodiment shown in FIGS. 1 to 6 are designated by the same reference numerals, and detailed description thereof will be omitted.

Next, the operation of the present embodiment having such a configuration will be described.

First, a container 20 having an integrally formed body portion 21 and a flange portion 22 is prepared by an injection molding method using a thermoplastic resin such as polypropylene.

Next, the contents 1 described above are stored in the storage portion 25 of the container 20 in an exposed state, and the fitting lid 30 is attached so as to cover the storage portion 25 of the container 20. At this time, the fitting lid 30 is attached to the flange portion 22. The fitting portion 32 of the above is fitted.

In this case, an interior bag 5 containing the additional contents 5a is attached to the back surface of the fitting lid 30 in advance. At this time, the interior bag 5 is attached to the back surface of the fitting lid 30 so that the opening portion 8 faces downward. At this time, the interior bag 5 is attached to the fitting lid 30 by a joint portion 95 such as a hot melt or an adhesive seal. The interior bag 5 may be attached to the back surface of the fitting lid 30 with a pair of peripheral sealing portions 6 and 6 via the tape 95a (see FIG. 22).

In this way, a container 10 with an inner bag including the container 20 and the fitting lid 30 is obtained, and the container 10 with the inner bag is subsequently covered with the shrink film 35 as a whole and protected from the outside. Further, the container 10 with an inner bag is firmly fixed from the outside by the shrink film 35. In this case, the content 1 in the storage portion 25 of the container 20 and the interior bag 5 attached to the back surface of the fitting lid 30 are separated by a predetermined distance.

Upon use, the user puts the container 10 with an inner bag covered with the shrink film 35 into a microwave oven (not shown). Next, the container 10 with an inner bag is heated by a microwave oven. At this time, the water contained in the contents inside the storage portion 25 of the container 20 evaporates and the pressure inside the storage portion 25 increases. Next, the steam in the storage portion 25 is discharged outward from the storage portion 25 between the flange portion 22 of the container 20 and the fitting portion 32 of the fitting lid 30. Further, the steam released to the outside of the fitting portion 32 of the fitting lid 30 then goes out from the micropores or pores formed in advance in the shrink film 35.

During this time, the additional content 5a in the interior bag 5 attached to the back surface of the fitting lid 30 is also heated, and the water contained in the additional content 5a evaporates to increase the pressure in the interior bag 5.

Next, the steam in the inner bag 5 breaks the opening portion 8 of the inner bag 5. In this way, the interior bag 5 is opened from the opening portion 8, and the additional contents 5a in the interior bag 5 are discharged outward from the opening portion 8.

At this time, since the opening portion 8 of the interior bag 5 faces downward, the additional content 5a in the interior bag 5 falls downward from the opening portion 8 and is poured onto the content 1 in the storage portion 25.

For example, when the content 1 in the storage portion 25 is noodles such as spaghetti and the additional content 5a in the interior bag 5 is a meat sauce poured into the spaghetti, it is heated on the heated spaghetti 1 in the storage portion 25. The prepared meat sauce 5a can be easily poured.

As described above, according to the present embodiment, when the container 10 with an inner bag is heated in a microwave oven, the inner bag 5 is taken out from the container 10 with the inner bag in advance and the additional contents 5a are placed in the storage portion 25 of the container 20. It is not necessary to put the container 20 in the microwave after pouring it on the contents 1 of the above. The stored contents 1 can be heated, and the heated additional contents 5a can be automatically hung on the heated contents 1. Further, since the interior bag 5 attached to the back surface of the fitting lid 30 and the content 1 stored in the storage portion 25 of the container 20 are separated by a predetermined distance, the additional content 5a in the interior bag 5 is separated. It can be poured evenly on the contents 1.

<Third embodiment>
Next, a third embodiment of the present invention will be described with reference to FIGS. 10A to 10C. In the third embodiment shown in FIGS. 10A to 10C, the outer bag 37 is provided so as to cover the entire container 20 without providing the inner lid 11 or the fitting lid 30 in the container 20.

Further, an interior bag 5 containing the additional contents 5a is attached to the upper back surface of the exterior bag 37.

Other configurations are substantially the same as those of the first embodiment shown in FIGS. 1 to 6.

In the third embodiment shown in FIGS. 10A to 10C, the same parts as those in the first embodiment shown in FIGS. 1 to 6 are designated by the same reference numerals, and detailed description thereof will be omitted.

Next, the operation of the present embodiment having such a configuration will be described.

First, a container 20 having an integrally formed body portion 21 and a flange portion 22 is prepared by an injection molding method using a thermoplastic resin such as polypropylene.

Next, the contents 1 described above are stored in the storage portion 25 of the container 20 in an exposed state, and the outer bag 37 is mounted so as to cover the entire container 20. In this case, the interior bag 5 containing the additional contents 5a is attached to the upper back surface of the exterior bag 37 in advance. At this time, the inner bag 5 is attached to the upper back surface of the outer bag 37 so that the opening portion 8 faces downward. At this time, the inner bag 5 is attached to the outer bag 37 by a joint portion 95 such as a hot melt and an adhesive seal. The interior bag 5 may be attached to the back surface of the exterior bag 37 with a pair of peripheral sealing portions 6 and 6 via the tape 95a (see FIG. 22).

Next, the outer bag 37 will be further described. Specifically, as shown in FIGS. 10B and 10C, the outer bag 37 has a pair of flexible films 60 having a base material layer 62, a partially formed resin layer 64, and a sealant layer 66. It has a sealing portion 72 which is configured to be overlapped and formed by heat-sealing the peripheral edge of the flexible film 60. The resin layer 64 has a predetermined strength in a temperature environment of room temperature or lower, but its strength decreases in a high temperature environment. Specifically, the resin layer 64 is a resin material having a melting point of 60 to 110 ° C., preferably 60 to 90 ° C., for example, an ethylene-vinyl acetate copolymer resin, or a polyamide, vitrified cotton, and polyethylene wax. It can be formed by using a resin containing. As the resin containing polyamide, vitrified cotton and polyethylene wax, MWOP varnish (softening point: 105 ° C.) manufactured by DIC Graphics Co., Ltd. can be used. The resin layer 64 is formed from at least the outer edge to the inner edge of the seal portion 72, and in FIG. 10C, the portion designated with 74 is the portion on which the resin layer 64 is formed.

As shown in FIG. 10C, the resin layer 64 may be formed beyond the inner edge of the seal portion 72.

As shown in FIG. 10B, in the outer bag 37, when the internal pressure rises due to the expansion of air in the outer bag 37 or the water vapor contained in the contents when heated in a microwave oven, the sealant layer 66 in the vicinity of the seal portion 72 is arbitrarily formed. The resin layer 64 whose strength has decreased is destroyed starting from the portion 73. As a result, air is released from the inside to the outside of the outer bag 37 by breaking the resin layer 64 between the sealant layer 66 and the base material layer 62 of the seal portion 72. Therefore, the water vapor in the outer bag 37 escapes, and the internal pressure thereof can be reduced. The flexible film 60 constituting the outer bag 37 includes at least the base material layer 62 and the sealant layer 66, partially includes the resin layer 64 between the base material layer 62 and the sealant layer 66, and at least seals the resin layer 64. By forming the portion 72 from the outer edge to the inner edge, the outer bag 37 can be provided with the steam release mechanism 74A. The steam venting mechanism provided in the outer bag 37 is not limited to the steam venting mechanism 74A described above.

In this way, a container 10 with an inner bag including the container 20 and the outer bag 37 is obtained. At this time, a pair of sealed seal portions 37a are formed on both sides of the outer bag 37, and the container 20 is covered by the outer bag 37.

At the time of use, the user puts the container 10 with an inner bag into a microwave oven (not shown). Next, the container 10 with an inner bag is heated by a microwave oven. At this time, the water contained in the contents inside the storage portion 25 of the container 20 evaporates, and the pressure inside the container 20 increases. Next, the steam in the container 20 then expands the outer bag 37 and exits from the steam release mechanism 74A, and in addition to the steam release mechanism 74A, the steam is formed in the outer bag 37 in advance. Or it goes out from the pores.

During this time, the additional content 5a in the interior bag 5 attached to the upper back surface of the exterior bag 37 is also heated, and the water contained in the additional content 5a evaporates to increase the pressure in the interior bag 5.

Next, the steam in the inner bag 5 breaks the opening portion 8 of the inner bag 5. In this way, the interior bag 5 is opened from the opening portion 8, and the additional contents 5a in the interior bag 5 are discharged outward from the opening portion 8.

At this time, since the opening portion 8 of the interior bag 5 faces downward, the additional content 5a in the interior bag 5 falls downward from the opening portion 8 and is poured onto the content 1 in the storage portion 25.

For example, when the content 1 in the storage portion 25 is noodles such as spaghetti and the additional content 5a in the interior bag 5 is a meat sauce poured into the spaghetti, it is heated on the heated spaghetti 1 in the storage portion 25. The prepared meat sauce 5a can be easily poured.

As described above, according to the present embodiment, when the container 10 with an inner bag is heated in a microwave oven, the inner bag 5 is taken out from the container 10 with the inner bag in advance and the additional contents 5a are placed in the storage portion 25 of the container 20. It is not necessary to put the container 20 in the microwave after pouring it on the contents 1 of the above. The stored contents 1 can be heated, and the heated additional contents 5a can be automatically hung on the heated contents 1. In this case, since the outer bag 37 expands due to the steam in the container 20, the contents 1 in the container 20 and the inner bag 5 attached to the upper back surface of the outer bag 37 are separated by a predetermined distance on the contents 1. The additional contents 5a can be poured evenly into the container.

<Fourth Embodiment>
Next, a fourth embodiment of the present invention will be described with reference to FIGS. 11 to 14. The container 10 with an inner bag includes a container 20 in which a storage portion 25 for storing the contents 1 is formed, a lid 40 that covers the storage portion 25 of the container 20, and a joint portion 50 that joins the lid 40 to the container 20. Be prepared. Further, the container 10 with an inner bag further includes a steam venting mechanism 48 that discharges the steam generated in the storage unit 25 to the outside of the storage unit 25 when the content 1 is heated. Further, on the back surface of the lid 40, an interior bag 5 for storing the additional contents 5a is attached.

Further, the interior bag 5 attached to the back surface of the lid 40 is arranged so that the opening portion 8 faces downward.

Other configurations are substantially the same as those of the first embodiment shown in FIGS. 1 to 6.

In the fourth embodiment shown in FIGS. 11 to 14, the same parts as those of the first embodiment shown in FIGS. 1 to 6 are designated by the same reference numerals, and detailed description thereof will be omitted. Next, the constituent parts of the fourth embodiment will be described.

〔lid〕
As shown in FIGS. 11 to 14, the lid 40 is arranged on the upper surface 23 of the flange portion 22 so as to cover the storage portion 25 of the container 20, and is joined to the upper surface 23 of the flange portion 22 by the joint portion 50. The lower surface 42 of the lid 40 is configured to be able to be joined to the upper surface 23 of the flange portion 22. FIG. 14 is a cross-sectional view showing an example of the layer structure of the lid 40. As shown in FIG. 14, the lid 40 includes at least a sealant layer 45 constituting the lower surface 42 of the lid 40 and a base material 44 laminated on the sealant layer 45 via an adhesive layer 46.

As the material constituting the base material 44, a polyester resin such as polyethylene terephthalate (PET), a polyamide resin such as nylon (Ny), or a polyolefin resin such as polypropylene (PP) can be used. The base material 44 may be composed of a uniaxially or biaxially stretched film. The thickness of the base material 44 is, for example, 5 μm or more and 50 μm or less.

As the material constituting the sealant layer 45, one or more resins selected from polyethylene (PE) such as low density polyethylene (LDPE) and linear low density polyethylene (LLDPE), and polypropylene (PP) may be used. Can be used. The sealant layer 45 may be a single layer or a multilayer. Further, the sealant layer 45 is preferably unstretched.

The sealant layer 45 preferably has an easy peel property. The easy peel property is a characteristic that when the lid 40 is peeled off from the flange portion 22 of the container 20, the lid 40 is easily peeled off from the upper surface 23 of the flange portion 22 at the lower surface 42 thereof, that is, at the interface of the sealant layer 45. be. The easy peel property can be exhibited, for example, by forming the sealant layer 45 with two or more kinds of resins and making one resin and the other resin incompatible. Examples of the resin capable of exhibiting the easy peel property include a mixed resin of polyethylene (PE) and polypropylene (PP).

The form of peeling the lid 40 from the flange portion 22 of the container 20 is not limited to peeling at the interface of the sealant layer 45 (peeling between the upper surface 23 of the flange portion 22 and the surface of the sealant layer 45). For example, the lid 40 may be detached from the flange portion 22 by cohesive failure of the sealant layer 45, and the lid 40 may be detached from one layer constituting the lid 40 and another layer adjacent thereto. May be peeled off from the flange portion 22.

The thickness of the sealant layer 45 is preferably 20 μm or more and 100 μm or less, and more preferably 30 μm or more and 80 μm or less.

The lid 40 may further include other layers. As the other layer, an appropriate layer can be selected according to the required performance such as water vapor and other gas barrier properties, light shielding properties, and various mechanical strengths. For example, as the gas barrier layer, a vapor deposition layer of a metal oxide such as aluminum oxide or an inorganic oxide such as silicon oxide, an ethylene-vinyl alcohol copolymer (EVOH), a polyvinylidene chloride resin (PVDC), and a fat such as nylon MXD6. Group polyamide and the like may be provided. By providing such a gas barrier layer, it is possible to prevent oxygen and water vapor from infiltrating into the container 10 with an inner bag. Further, a support may be provided in order to impart mechanical strength to the lid material. As the support, the same material as that constituting the base material 44 can be used. The gas barrier layer and the support may be provided between the base material 44 and the sealant layer 45, or may be provided on the surface of the base material 44 opposite to the sealant layer 45.

Examples of the method for laminating the base material 44 and the sealant layer 45 include a melt extrusion method and a dry laminating method. In the melt extrusion method, the material constituting the sealant layer 45 is extruded onto the film containing the base material 44. In the dry laminating method, the sealant layer 45 made of a film formed in advance and the film containing the base material 44 are bonded together using an adhesive. When the dry laminating method is used, as shown in FIG. 14, the lid 40 is located between the substrate 44 and the sealant layer 45 and further includes an adhesive layer 46 made of an adhesive.

Even when the lid 40 is manufactured by the melt extrusion method, the adhesive layer 46 containing the anchor coating agent used in the melt extrusion method may be present on the lid 40.

Examples of the material constituting the adhesive layer 46 include urethane-based and epoxy-based resins, which are two-component curable resins composed of a main agent and a curing agent. The thickness of the adhesive layer 46 is, for example, 1 μm or more and 6 μm or less.

(Joint part)
The joint portion 50 joins the upper surface 23 of the flange portion 22 and the lower surface 42 of the lid 40 to seal the storage portion 25 of the container 20 from the outside. As shown in FIG. 12, the joint portion 50 is continuously formed between the upper surface 23 of the flange portion 22 and the lower surface 42 of the lid 40 so as to surround the storage portion 25 in a plan view. The joint 50 may be formed by at least partially melting at least one of the container 20 or the lid 40. Further, the joint portion 50 may be formed of a component separate from the container 20 and the lid 40, such as an adhesive. By forming the joint portion 50 between the lid 40 and the flange portion 22, the storage portion 25 of the container 20 can be sealed from the outside.

As shown in FIG. 12, the joint portion 50 includes a main line 52 extending along the flange portion 22 and a protruding line 54 arranged on the long side portion 22a of the flange portion 22 and protruding inward from the main line 52. ,have. In the example shown in FIG. 12, the main line 52 extends parallel to the inner edge 22x of the flange portion 22. The protruding line 54 is located inside the above-mentioned recess 26 of the flange portion 22. Reference numeral 50x represents the inner edge of the joint portion 50, and reference numeral 50y represents the outer edge of the joint portion 50.

[Steam removal mechanism]
When the protruding line 54 is peeled off, a steam hole is formed between the lid 40 and the flange portion 22, and the steam of the storage portion 25 escapes to the outside through the steam hole. As described above, the protruding line 54 is one of the elements constituting the steam venting mechanism 48 for discharging the steam generated in the storage unit 25 to the outside of the storage unit 25.

The steam venting mechanism 48 is preferably provided so that the distance from the protruding line 54 of the steam venting mechanism 48 to the center point 25c of the accommodating portion 25 is shorter than the distance from the main line 52 to the center point 25c. For example, when the contour of the flange portion 22 is substantially rectangular, the protruding line 54 of the flange portion 22 preferably has the long side portion (edge portion) 22a of the long side portions (edge portions) 22a of the flange portion 22. It is located in the middle in the extending direction. Thereby, the distance between the center point 25c of the storage portion 25 and the inner edge 40x of the protrusion line 54 can be set to the shortest distance, whereby the protrusion line 54 due to the pressure generated when heating the contents can be set. It is possible to increase the force acting on. The steam release mechanism 48 is not limited to the structure shown in FIG.

The above-mentioned recess 26 of the flange portion 22, which is another element constituting the steam venting mechanism 48, is located outside the protruding line 54 as shown in FIG. Therefore, the distance from the outer edge 50y of the protruding line 54 to the outer edge 22y of the flange portion 22 can be shortened as compared with the case where the recess 26 is not provided. As a result, after the protruding line 54 is peeled off from the flange portion 22, steam easily escapes from the outer edge 22y of the flange portion 22 through the gap between the lid 30 and the flange portion 22.

Next, the operation of the present embodiment having such a configuration will be described.

First, a container 20 having an integrally formed body portion 21 and a flange portion 22 is manufactured by an injection molding method using a thermoplastic resin such as polypropylene. Subsequently, a part of the outer edge 22y of the flange portion 22 is cut out to form a recess 26 in the flange portion 22. In this way, as shown in FIG. 11, it is possible to obtain the container 20 in which the recess 26 is formed in a part of the flange portion 22. The mold used for injection molding may have a shape corresponding to the recess 26. In this case, the step of cutting out a part of the outer edge 22y of the flange portion 22 is unnecessary.

Subsequently, the storage portion 25 of the container 20 is filled with the content 1 in an exposed state. Also, the lid 40 is prepared. After that, the lid 40 is placed on the upper surface of the flange portion 22 of the container 20. Next, the portion of the lid 40 where the joint portion 50 should be formed is heated from the upper surface 41 side using a hot plate to melt the sealant layer 45 of the lid 40, and the lid 40 is heat-sealed to the flange portion 22. do.

In this case, an interior bag 5 containing the additional contents 5a is attached to the back surface of the lid 40 in advance, and the opening portion 8 of the interior bag 5 faces downward. At this time, the interior bag 5 is attached to the lid 40 by a joint portion 95 such as a hot melt and an adhesive seal. The interior bag 5 may be attached to the back surface of the lid 40 by a pair of peripheral sealing portions 6 and 6 via the adhesive tape 95a (see FIG. 22).

In this way, the container 10 with an inner bag including the container 20, the lid 40, and the joint portion 50 is obtained.

At the time of use, the user puts the container 10 with an inner bag into a microwave oven (not shown). Next, the container 10 with an inner bag is heated by a microwave oven. At this time, the water contained in the contents inside the storage portion 25 of the container 20 evaporates and the pressure inside the storage portion 25 increases. Next, the steam in the storage section 25 is discharged from the storage section 25 to the outside via the steam venting mechanism 48.

During this time, the additional content 5a in the interior bag 5 attached to the back surface of the lid 40 is also heated, the water contained in the additional content 5a evaporates, and the pressure inside the interior bag 5 increases.

Next, the steam in the inner bag 5 breaks the opening portion 8 of the inner bag 5. In this way, the interior bag 5 is opened from the opening portion 8, and the additional contents 5a in the interior bag 5 are discharged outward from the opening portion 8.

At this time, since the opening portion 8 of the interior bag 5 faces downward, the additional content 5a in the interior bag 5 falls downward from the opening portion 8 and is poured onto the content 1 in the storage portion 25.

For example, when the content 1 in the storage portion 25 is noodles such as spaghetti and the additional content 5a in the interior bag 5 is a meat sauce poured into the spaghetti, it is heated on the heated spaghetti 1 in the storage portion 25. The prepared meat sauce 5a can be easily poured.

As described above, according to the present embodiment, when the container 10 with an inner bag is heated in a microwave oven, the inner bag 5 is taken out from the container 10 with the inner bag in advance and the additional contents 5a are placed in the storage portion 25 of the container 20. It is not necessary to put the container 20 in the microwave after pouring it on the contents 1 of the above. The stored contents 1 can be heated, and the heated additional contents 5a can be automatically hung on the heated contents 1.

<Fifth Embodiment>
Next, a fifth embodiment of the present invention will be described with reference to FIG. In the fifth embodiment shown in FIG. 15, a shrink film 35 is provided so as to cover the entire container 20.

Further, an interior bag 5 containing the additional contents 5a is attached to the upper back surface of the shrink film 35.

Other configurations are substantially the same as those of the first embodiment shown in FIGS. 1 to 6.

In the fifth embodiment shown in FIG. 15, the same parts as those of the first embodiment shown in FIGS. 1 to 6 are designated by the same reference numerals, and detailed description thereof will be omitted.

Next, the operation of the present embodiment having such a configuration will be described.

First, a container 20 having an integrally formed body portion 21 and a flange portion 22 is prepared by an injection molding method using a thermoplastic resin such as polypropylene.

Next, the contents 1 described above are stored in the storage portion 25 of the container 20, and the shrink film 35 is provided so as to cover the entire container 20.

In this case, the interior bag 5 is attached to the upper back surface of the shrink film 35 in advance. At this time, the interior bag 5 is attached to the upper back surface of the shrink film 35 so that the opening portion 8 faces downward. At this time, the interior bag 5 is attached to the shrink film 35 by a joint portion 95 such as a hot melt and an adhesive seal. The interior bag 5 may be attached to the back surface of the shrink film 35 via the tape 95a by a pair of peripheral sealing portions 6 and 6 (see FIG. 22).

In this way, the container 10 with an inner bag made of the container 20 and the shrink film 35 is obtained.

At the time of use, the user inserts the container 10 with an inner bag covered with the shrink film 35 into a microwave oven (not shown). Next, the container 10 with an inner bag is heated by a microwave oven.

At this time, the water contained in the contents inside the storage portion 25 of the container 20 evaporates and the pressure inside the storage portion 25 increases. Next, the steam in the storage portion 25 then exits outward from the micropores or pores formed in advance in the shrink film 35.

During this time, the additional content 5a in the interior bag 5 placed on the inner lid main body 11a of the inner lid 11 is also heated, and the water contained in the additional content 5a evaporates to increase the pressure in the interior bag 5. ..

Next, the steam in the inner bag 5 breaks the opening portion 8 of the inner bag 5. In this way, the interior bag 5 is opened from the opening portion 8, and the additional contents 5a in the interior bag 5 are discharged outward from the opening portion 8.

At this time, since the opening portion 8 of the interior bag 5 faces downward, the additional content 5a in the interior bag 5 falls downward from the opening portion 8 and is poured onto the content 1 in the storage portion 25.

For example, when the content 1 in the storage portion 25 is noodles such as spaghetti and the additional content 5a in the interior bag 5 is a meat sauce poured into the spaghetti, it is heated on the heated spaghetti 1 in the storage portion 25. The prepared meat sauce 5a can be easily poured.

As described above, according to the present embodiment, when the container 10 with an inner bag is heated in a microwave oven, the inner bag 5 is taken out from the container 10 with the inner bag in advance and the additional contents 5a are placed in the storage portion 25 of the container 20. After pouring onto the contents 1, it is not necessary to insert the container 20 into the microwave oven. Simply put the container 10 with the interior bag in the microwave with the interior bag 5 inside and heat it. The contents 1 stored therein can be heated, and the heated additional contents 5a can be automatically hung on the heated contents 1.

<Modified example of the opened portion of the first embodiment to the fifth embodiment>
Next, a modified example of the opening portion shown in the first embodiment to the fifth embodiment of the present invention will be described with reference to FIGS. 16A to 16F to 18A to 18F.

The first embodiment shown in FIGS. 1 to 6, the second embodiment shown in FIGS. 7 to 9, the fourth embodiment shown in FIGS. 10A to 14, and the fifth embodiment shown in FIG. In the embodiment, the linear sheet portion 7a formed on the back-pasted portion 7 of the interior bag 5 has a bent portion 9, and the bent portion 9 is formed when the interior bag 5 is heated and the internal pressure increases. An example of functioning as an opening portion 8 to be opened is shown, but the present invention is not limited to this, and the opening portion 8 of the inner bag 5 is formed by a heat-generating ink containing a solvent as shown in FIGS. 16A to 16F to 17, and is a solvent. A linear opening portion 75 including a heat generating layer formed by volatilization may be provided.

As shown in FIGS. 16A to 16B and 17, the interior bag 5 has a heat-sealed back-sticking portion 7, and the interior bag 5 has a portion of the interior bag 5 excluding the back-sticking portion 7, for example, a back-sticking portion 7. An opening portion 8 is provided on the opposite side. The opening portion 8 is formed of heat-generating ink containing a solvent, and is composed of a linear opening portion 75 including a heat-generating layer formed by volatilizing the solvent.

That is, as shown in FIGS. 16A to 16F, the interior bag 5 containing the additional contents 5a is formed by folding a flexible film, and has a pair of peripheral seal portions 6 and 6 formed at both ends thereof. Have. The interior bag 5 is obtained by folding the flexible film as described above, storing additional contents inside, and then heat-sealing the opening. In this case, peripheral seal portions 6 and 6 are formed at both ends of the heat seal. Further, the interior bag 5 has a backing portion 7 formed by heat sealing.

Further, the inner bag 5 is provided with a linear opening portion 75 including a heat generating layer formed by a heat generating ink containing a solvent and having the solvent volatilized in a portion facing the backing portion 7. The linear opening portion 75 extends linearly between the pair of peripheral edge sealing portions 6, 6. When the inner bag 5 is heated and the internal pressure increases, the inner bag 5 is opened from the linear opening portion 75 including the heat generating layer, and the additional content 5a is discharged outward from the opened linear opening portion 75. It is supposed to be done. Therefore, the linear opening portion 75 of the interior bag 5 functions as an opening portion 8 for opening the interior bag 5.

The interior bag 5 has a laminated body including a first base material layer 76a, an adhesive layer 76b, and a sealant layer 76c, which are sequentially laminated as shown in FIG. 17, and the first base material layer of this laminated body. A linear opening portion 75 made of a heat generating layer is partially provided between the 76a and the adhesive layer 76b. Examples of such a laminated material include biaxially stretched polyethylene terephthalate as a first base material layer, a vapor deposition layer of an inorganic oxide, a heat generating layer, an adhesive layer, biaxially stretched nylon as a second base material layer, and adhesion. A laminated body in which unstretched polypropylene to be an agent layer and a sealant layer is laminated in this order can be used.

Next, the heat-generating ink that forms the heat-generating layer of the linear opening portion 75 will be described.

The heat-generating layer formed by the heat-generating ink receives microwaves in a microwave oven to generate heat, and melts and opens the inner layer bag 5.

The heat-generating layer formed by such heat-generating ink receives microwaves to generate heat, and a part of the inner bag 5 in the region where the heat-generating layer is provided is heated and melted, and the internal pressure increased by heating the additional content 5a. A part of the inner layer bag 5 heated and melted by the above method is opened to release the internal pressure. The heat-generating ink includes a conductive material that absorbs microwaves to generate heat, but the conductive material is not particularly limited, but considering that it is converted into ink, carbon black, silver, aluminum, ITO ( (Indium tin oxide) and the like are suitable, and carbon black is suitable because it can be easily used as a printing ink, for example, a gravure printing ink. The surface resistivity is preferably 10 Ω / □ or more and 10 ⁷ Ω / □ or less. The reason for this is less than 10 [Omega / □ heating value is reduced to the microwave is reflected, is because the 10 ⁷ Ω / □ ultra heating value resistor is too large is reduced.

The heat-generating ink contains a resin and a solvent in addition to the conductive material. Then, after applying the heat-generating ink, the linear opening portion 75 can be formed by volatilizing the solvent.

Further, examples of the resin include urethane resin. Further, as the resin, a conductive polymer such as a polyaniline-based resin, a polythiophene-based resin, or a polyacetylene-based resin may be used.

In addition, in FIGS. 16A to 16B, as the linear opening portion 75 functioning as the opening portion 8 provided in the inner bag 5, the one extending linearly between the pair of peripheral sealing portions 6 and 6 is shown. The linear opening portion 75 may be formed in an "X-shape" over the entire surface of the interior bag 5 (see FIG. 16C), and the linear opening portion 75 may be formed in an "U-shape" over the entire surface of the interior bag 5. (See FIG. 16D), the linear opening portion 75 may be formed in an “H shape” over the entire surface of the interior bag 5 (see FIG. 16E), and the linear opening portion 75 may be formed inside. It may be formed in a "circular shape" having a chipped portion 75a on a part of the surface of the bag 5 (see FIG. 16F).

Furthermore, in FIGS. 16A to 16F, the inner bag 5 is provided with an opening portion 8, and the opening portion 8 is formed by a heat-generating ink containing a solvent, and the linear opening portion 75 including a heat-generating layer formed by volatilizing the solvent. However, the present invention is not limited to this, and the linear opening portion 76 that functions as the opening portion 8 may be formed by half-cutting.

As shown in FIGS. 18A to 18F, the interior bag 5 has a heat-sealed back-sticking portion 7, and a portion of the interior bag 5 excluding the back-sticking portion 7, for example, a portion opposite to the back-sticking portion 7. Is provided with a linear opening portion 86 formed by a half cut.

The interior bag 5 has a laminated body including a first base material layer 76a, an adhesive layer 76b, and a sealant layer 76c, which are sequentially laminated as shown in FIG. 18F, from the first base material layer 76a of this laminated body. A linear opening portion 86 formed by a half cut is provided so as to penetrate the adhesive layer 76b. As such a laminated material, for example, a laminated body in which biaxially stretched polyethylene terephthalate as a first base material layer, an adhesive layer, and unstretched polypropylene as a sealant layer are laminated in order can be used, and half-cut can be used. , Biaxially stretched polyethylene terephthalate serving as a first base material layer, formed through an adhesive layer. Alternatively, a laminate in which a biaxially stretched polyethylene terephthalate as a first base material layer, an adhesive layer, a biaxially stretched nylon as a second base material layer, an adhesive layer, and an unstretched polypropylene as a sealant layer are laminated in this order. It can be used, and the half cut is formed through a biaxially stretched polyethylene terephthalate as a first base material layer, an adhesive layer, biaxially stretched nylon as a second base material layer, and an adhesive layer.

The linear opening portion 86 formed by the half cut is provided so as to extend linearly between the pair of peripheral edge sealing portions 6 and 6 of the inner bag 5 (see FIG. 18A).

Note that FIG. 18A shows an example in which a linear opening portion 86 formed by a half cut extending linearly between a pair of peripheral sealing portions 6 and 6 facing each other of the interior bag 5 is provided, but the present invention is not limited to this. The interior bag 5 may be provided with an "X-shaped" linear opening portion 86 formed by a half cut (see FIG. 18B), and the interior bag 5 may be provided with a "U-shaped" formed by a half cut. The linear opening portion 86 may be provided (see FIG. 18C), or the interior bag 5 may be provided with an “H-shaped” linear opening portion 86 formed by a half cut (see FIG. 18D). The bag 5 may be provided with a "circular" linear opening portion 86 having a chipped portion 76a in a portion formed by a half cut (see FIG. 18E).

Next, another modified example of the opening portion 8 provided in the inner bag 5 will be described with reference to FIG.

As described above, the inner bag 5 is provided with an opening portion 8 that is opened and the additional contents 5a are discharged to the container 20 side when the internal pressure of the inner bag 5 is increased by heating. The opened portion 8 may consist of a linear heat-sealed portion 87 constituting a back-pasted portion 7 obtained by heat-sealing the two side edges of the interior bag 5 (see FIG. 19). The linear heat seal portion 87 is opened when the internal pressure of the inner bag 5 is increased by heating, has an easy peel property, and serves as the back sticking portion 7 in the first to fifth embodiments. It has both a function and a function as an opening unit 8.

The linear heat seal portion 15 is provided so as to extend linearly between the pair of peripheral edge seal portions 6 and 6 facing each other of the inner bag 5 (see FIG. 19).

<Sixth Embodiment>
Next, a sixth embodiment of the present invention will be described with reference to FIGS. 20A, 20B, 20C, 20D and 21.

The sixth embodiment shown in FIGS. 20A, 20B, 20C, 20D and 21 has a different configuration of the inner bag 5, but the other configurations are the fourth embodiments shown in FIGS. 11 to 14. Is almost the same as.

As shown in FIGS. 20A, 20B, 20C, 20D, and 21, the container with an inner bag 10 has a container 20 in which a storage portion 25 for storing the contents 1 is formed, and a storage portion 25 of the container 20. A lid 40 having an upper surface 41 and a lower surface 42 for covering the container 40, and a joint portion 50 for joining the lid 40 to the container 20 are provided. Further, the container 10 with an inner bag further includes a steam venting mechanism 48 that discharges the steam generated in the storage unit 25 to the outside of the storage unit 25 by heating the contents 1 (see FIG. 12). Further, the lower surface 42 of the lid 40 is provided with an interior bag 5 for storing the additional contents 5a. The interior bag 5 will be described later.

In the sixth embodiment shown in FIGS. 20A, 20B, 20C, 20D and 21, the same parts as those in the fourth embodiment shown in FIGS. 11 to 14 are designated by the same reference numerals in detail. The explanation is omitted. Next, the constituent parts of the sixth embodiment will be described.

〔lid〕
The lid 40 is arranged on the upper surface 23 of the flange portion 22 so as to cover the storage portion 25 of the container 20, and is joined to the upper surface 23 of the flange portion 22 by the joint portion 50. The lower surface 42 of the lid 40 is configured to be able to be joined to the upper surface 23 of the flange portion 22. The lid 40 is integrally molded with the interior bag 5 as described later.

As shown in FIG. 20C, the lid 40 can be composed of the following laminated bodies from the lower surface to the upper surface.
A laminate of the first sealant layer 96 / adhesive layer 99 / base material layer 99 / adhesive layer 99 / second sealant layer 97.
In particular,
(1) EP (easy peel film) (first sealant layer) 96 / adhesive layer 99 / polyethylene terephthalate (PET) (base material layer) 98 / adhesive layer 99 / unstretched polypropylene (CPP) (second sealant layer) ) 97 laminates,
(2) EP (Easy Peel Film) (First Sealant Layer) 96 / Adhesive Layer 99 / Stretched Nylon (ONY) (Base Material Layer) 98 / Adhesive Layer 99 / Unstretched Polypropylene (CPP) (Second Sealant Layer) ) 97 laminates,
(3) EP (easy peel film) (first sealant layer) 96 / adhesive layer 99 / polyethylene terephthalate (PET) (base material layer) 98 / adhesive layer 99 / linear low density polyethylene (L-LDPE) A laminated body of (second sealant layer) 97 can be used.
Here, as (1) EP (easy peel film), a mixed resin of polyethylene (PE) and polypropylene (PP) can be mentioned. Further, the EP (easy peel film) is joined to the upper surface of the flange portion 22 and can be easily peeled off from the flange portion 22.

Examples of the material constituting the adhesive layer 99 include urethane-based and epoxy-based resins, which are two-component curable resins composed of a main agent and a curing agent. The thickness of the adhesive layer 99 is, for example, 1 μm or more and 6 μm or less.

Further, as the base material layer, a transparently vapor-deposited material having a gas barrier function is used.

Alternatively, as shown in FIG. 20D, the lid 40 can be composed of the following laminates from the lower surface to the upper surface.
A laminate of the first sealant layer 96 / adhesive layer 99 / second sealant layer 99.
In particular,
(4) Laminate of EP (easy peel film) (first sealant layer) 96 / adhesive layer 99 / unstretched polypropylene (CPP) (second sealant layer) 97,
(5) A laminate of EP (easy peel film) (first sealant layer) 96 / adhesive layer 99 / linear low-density polyethylene (L-LDPE) (second sealant layer) 97 can be used.

[Interior bag]
Next, the interior bag 5 containing the additional contents 5a will be described.

As shown in FIGS. 20A, 20B and 21, the interior bag 5 containing the additional contents 5a is integrally configured with the lid 40 by folding the flexible film.

That is, as shown in FIG. 21, a roll 90 of the soft film formed by winding the soft film 90A constituting the lid 40 is prepared.

Next, the soft film 90A constituting the lid 40 is unwound from the winding body 90, the soft film 90A is cut to a predetermined length, and then folded in two through the folding portion 91 to be folded, and the soft film 90A is folded. A pair of peripheral sealing portions 6 and 6 are formed by heat-sealing a part of both end portions of the above. After that, additional contents are stored from the opening of the flexible film 90A which is heat-sealed into the space inside the pair of peripheral sealing portions 6 and 6 to become the sealing portion 79, and this opening is heat-sealed to form the sealing portion 79. To.

By heat-sealing the flexible film 90A in this way, a pair of peripheral edge sealing portions 6 and a sealing portion 79 are formed, and an additional content 5a is formed inside a region surrounded by the pair of peripheral edge sealing portions 6 and 6 and the sealing portion 79. Is stored. In this case, of the soft film 90A, the folding portion 91, the pair of peripheral sealing portions 6, and the sealing portion 79 form an interior bag 5 composed of a gassho portion, and the other portion of the soft film 90A has a lid 40. Configure.

As shown in FIGS. 20A to 20D, the interior bag 5 having such a gassho portion can also be referred to as an interior bag 5 in which a part of the lid 40 projects downward from the lid 40, and the interior bag 5 can be said to be formed. Has a sealing portion 79 formed on the lid 40 side and a pair of side portions 78a and 78b extending downward from the sealing portion 79.

Further, the lower end portion of the interior bag 5 is composed of a sealed folding portion 91, and the lower end portion of the interior bag 5 is opened when the container 10 with the interior bag is heated and the internal pressure of the interior bag 5 increases. An opening portion 8 for discharging the object 5a is provided.

The opening portion 8 of the interior bag 5 shown in FIGS. 20A and 20B is a linear opening portion 75 (see FIGS. 16A to 16F) formed from heat-generating ink containing a solvent and containing a heat-generating layer in which the solvent is volatilized, or a half-cut portion. It is composed of a linear opening portion 86 formed by (see FIGS. 18A to 18F).

1 Contents 5 Interior bag 5a Additional contents 7 Backing part 8 Opening part 10 Container with interior bag 11 Inner lid 11a Inner lid body 12 Flange part 15 Opening 20 Container 21 Body part 22 Flange part 25 Accommodating part 26 Recession 30 Fitting Lid 31 Lid body 32 Fitting part 35 Shrink film 37 Exterior bag 40 Lid 48 Steam venting mechanism 50 Joint part 75 Linear opening part 77 Interior bag part 78a, 78b Side part 79 Sealed part 90 Roll 90A Flexible film 91 Folding Part 95 Joint part 95a Adhesive tape

Claims (8)

A container including a body portion that defines a storage portion for storing the contents in an exposed state, and a flange portion connected to the upper portion of the body portion.
It is provided with a fitting lid arranged via an inner lid having an opening and fitted to the flange portion so as to cover the storage portion of the container.
An interior bag for storing additional contents is provided on the inner lid, and the interior bag has an opening portion for opening when the internal pressure is increased and discharging the additional contents.
The interior bag is placed on the inner lid so that the opening is facing down and in a position corresponding to the opening .
The opening of the inner lid is formed in the central portion of the inner lid, and the opening is not formed in other parts of the inner lid.
The interior bag has a pair of peripheral sealing portions and a back sticking portion, a linear sealing portion is formed on the back pasting portion, and the linear sealing portion is bent toward the inside of the interior bag and the said. A container with an interior bag that has a bent part that constitutes the opening part. A container including a body portion that defines a storage portion for storing the contents in an exposed state, and a flange portion connected to the upper portion of the body portion.
A fitting lid fitted to the flange portion is provided so as to cover the storage portion of the container.
An interior bag for storing additional contents is provided on the back surface of the fitting lid, and the interior bag has an opening portion for opening when the internal pressure is increased and discharging the additional contents.
The interior bag is fixed to the back surface of the fitting lid with the opening portion facing downward .
The interior bag has a pair of peripheral sealing portions and a back sticking portion, and a linear sealing portion is formed on the back pasting portion, and the linear sealing portion is bent toward the inside of the interior bag and the said. It has a bent part that constitutes the opening part,
The interior bag is a container with an interior bag that is fixed to the back surface of the fitting lid at the center thereof. A container including a body portion that defines a storage portion for storing the contents in an exposed state, and a flange portion connected to the upper portion of the body portion.
It is equipped with an outer bag for storing the container.
An interior bag for storing additional contents is provided on the upper back surface of the outer bag, and the interior bag has an opening portion for opening when the internal pressure is increased and discharging the additional contents.
The interior bag is fixed to the upper back surface of the outer bag so that the opening portion faces downward and the storage portion faces .
The interior bag has a pair of peripheral sealing portions and a back sticking portion, and a linear sealing portion is formed on the back pasting portion, and the linear sealing portion is bent toward the inside of the interior bag and the said. It has a bent part that constitutes the opening part,
The inner bag is a container with an inner bag, which is fixed to the upper back surface of the outer bag at the center thereof. A container including a body portion that defines a storage portion for storing the contents in an exposed state, and a flange portion connected to the upper portion of the body portion.
A lid arranged on the upper surface of the flange portion is provided so as to cover the storage portion of the container.
A joint portion for joining the upper surface of the flange portion and the lower surface of the lid is formed between the upper surface of the flange portion and the lower surface of the lid.
An interior bag for storing additional contents is provided on the back surface of the lid, and the interior bag has an opening portion for opening when the internal pressure is increased and discharging the additional contents.
The interior bag is fixed to the back surface of the lid with the opening portion facing downward .
The interior bag has a pair of peripheral sealing portions and a back sticking portion, and a linear sealing portion is formed on the back pasting portion, and the linear sealing portion is bent toward the inside of the interior bag and the said. It has a bent part that constitutes the opening part,
The interior bag is a container with an interior bag that is fixed to the back surface of the lid at the center thereof. A container including a body portion that defines a storage portion for storing the contents in an exposed state, and a flange portion connected to the upper portion of the body portion.
A shrink film for storing the container is provided.
An interior bag for storing additional contents is provided on the upper back surface of the shrink film, and the interior bag has an opening portion for opening when the internal pressure rises due to heating and discharging the additional contents.
The interior bag is fixed to the upper back surface of the shrink film so that the opening portion faces downward and the storage portion faces.
The interior bag has a pair of peripheral sealing portions and a back sticking portion, and a linear sealing portion is formed on the back pasting portion, and the linear sealing portion is bent toward the inside of the interior bag and the said. It has a bent part that constitutes the opening part,
The interior bag is a container with an interior bag that is fixed to the upper back surface of the shrink film at the center thereof. A container including a body portion that defines a storage portion for storing the contents in an exposed state, and a flange portion connected to the upper portion of the body portion.
A lid made of a film material arranged on the upper surface of the flange portion is provided so as to cover the storage portion of the container.
A joint portion for joining the upper surface of the flange portion and the lower surface of the lid is formed between the upper surface of the flange portion and the lower surface of the lid.
A part of the lid has a pair of side portions formed so as to project downward from the lid, an interior bag for storing additional contents is provided, and the end of the pair of side portions on the lid side is sealed. A sealed portion for sealing the interior bag is formed.
The inner bag is a container with an inner bag having an opening portion for opening when the internal pressure is increased by heating and discharging the additional contents. The container with an interior bag according to any one of claims 1 to 6, wherein at least one of rice, porridge, noodles, grilled food, and fried food is stored in the storage portion in the container. The container with an interior bag according to any one of claims 1 to 7, wherein at least one of a seasoning, an ingredient, and a sauce is stored as an additional content in the interior bag.

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