JP6260988B2 - Packaging container and package for hydrolyzed foods provided with the same - Google Patents

Description

  The present invention relates to a packaging container and a package for hydrolyzed foods provided with the same, and more particularly to a packaging container for containing cooked foods for hydrolyzed food and drinks in outer space and a package for hydrolyzed foods comprising the same.

  Conventionally, a hydrolyzed food is known as a food excellent in preservability and portability. These are foods that have been semi-cooked in advance and lyophilized, and then cooked into final foods by adding water or hot water.

  In recent years, a wide variety of hydrated cooked foods have been developed, and these hydrated cooked foods are used as astronaut foods staying in space stations such as ISS and space shuttles, so-called space foods. Hydrolyzed food used as space food is usually brought into the machine in a state of being contained in a packaging container, and hot water is injected into the packaging container by a hydration device such as a hydrating needle during eating and drinking. The cooked food is stored.

  Space edible packaging containers are required to have a compact outer dimension and a large filling capacity before being added. In addition, the space food packaging container needs to be provided with an inlet for pouring water into the packaging container with a special watering device such as a watering needle as described above. As such a space food packaging container, Patent Document 1 proposes a packaging container that can be completely sealed even when external pressure is applied to the packaging container when water is added to the cooked food stored in the container. Yes.

  In addition to having a high level of hygiene so that bacteria, viruses, etc. do not enter the packaging container, the packaging container as described above is light and not bulky. There is a need for a packaging container that can sufficiently cope with the circumstances of the space environment, such as the ability to store space foods for a longer period of time in order to enable them to stay longer.

  By the way, in order to maintain the quality of foods, pharmaceuticals, etc. or to improve the storage stability, it is performed to store an oxygen scavenger in a packaging container. In addition, since pharmaceuticals and the like also have safety and health problems when they come into direct contact with oxygen scavengers, in such fields, medicines etc. are once packaged with an inner packaging material, which is then packaged with an oxygen scavenger and an outer packaging material. A so-called double packaging form is employed. Such an inner packaging material may be completely sealed and packaged by the inner packaging material in order to keep the contents (pharmaceuticals, etc.) in a sterile state, but if the inner packaging material is too airtight, The effect cannot be fully exhibited. In order to solve such a problem, for example, Patent Document 2 proposes to use a special film in which non-penetrating micropores are perforated as an inclusion material capable of transmitting oxygen.

JP 2008-37471 A JP-A-5-319459

  In order to improve the preservability of food stored in a packaging container, in particular, hydrated cooked food, the present inventors have improved the functional preservability of the food such as desiccant and oxygen scavenger in the packaging container. In order to accommodate the functional material, the partition member for separating the functional improving material so as not to come into direct contact with the cooked food is provided in the packaging container, and the material of the partition member is examined. By using a polyolefin resin film, before water is added to the cooked food (that is, in a preserved state), gases such as oxygen and water vapor existing in the region where the cooked food is stored are effectively functional through the partition member. Even if it is absorbed by the improver and water is added to the cooked food, the partition member will not block the water and wet the functional improver. It has been found that it is possible Unisuru. And, when the food contained in the packaging container is stored for a long time in outer space and cooked, by using a polyolefin-based resin film having a predetermined density or less as a partition member, the storage period of the hydrolyzed food is significantly improved. I got the knowledge. The present invention is based on this finding.

  Accordingly, an object of the present invention is to provide a packaging container that can maintain the preservability of food contained in the container in a high state and a package for hydrolyzed foods including the packaging container.

A packaging container according to the present invention is a packaging container for containing a food to be cooked with water, a container main body for containing food, an injection part for injecting a liquid for water cooking into the container main body, A functional member for improving the storage stability of the food in the container main body, and a partition member for partitioning the food and liquid from the region, and the liquid injection unit to the outside Characterized in that the partition member is made of a polyolefin resin film having a density of 1.0 g / cm ³ or less that does not allow the food and liquid to permeate and allows gas to permeate. To do.

  In the present invention, the polyolefin resin is preferably selected from the group consisting of linear low density polyethylene, low density polyethylene, and mixtures thereof.

  In this invention, it is preferable that the thickness of the said partition member is 50-80 micrometers.

  In this invention, it is preferable that the said partition member consists of an unstretched film.

  In this invention, it is preferable that the said container main body is provided with a peripheral seal part, and the said partition member is provided so that it may extend even to the said peripheral seal part of the said container main body.

  In this invention, it is preferable that the said container main body is provided with a peripheral seal part, and at least one part of the said partition member is provided so that it may not extend to the said peripheral seal part of the said container main body.

  In this invention, it is preferable that the said partition member has one side and the other side, and the said functional improvement material is included in the inside of the said partition member.

  In this invention, it is preferable that the said container main body has a gusset part in both sides.

  In the present invention, the injection part includes an injection port located outside the container main body, and a flange part formed to be connected to the injection port and welded to the container main body. A valve is preferably fitted inside the inlet.

  In this invention, it is preferable to provide the extraction | pouring part for pouring the said liquid in the said container main body.

  In the present invention, the pouring part is detachable from the spout located on the outer side of the container, the flange formed in connection with the spout and welded to the packaging container, and the upper end of the spout And a cap to be attached.

  Moreover, the package for hydrolyzed food according to another aspect of the present invention is obtained by packaging the entire packaging container with an exterior material.

  In this invention, it is preferable that the said package for water food is used as a space food package.

  According to the present invention, the container main body is provided with a partition member made of a polyolefin resin film having a predetermined density or less, and the functional improving material is partitioned from the region in which the food and liquid are stored. It is possible to maintain the food storability stored in the main body in a high state, and to prevent the functional improvement material from coming into contact with the liquid even when the liquid is injected into the container body.

It is a perspective view of the packaging container which concerns on the 1st Embodiment of this invention. It is a front view which shows the structure of the packaging container of FIG. 1 simply. It is II sectional drawing in FIG. It is II-II sectional drawing in FIG. It is an exploded view of the packaging container which concerns on the 1st Embodiment of this invention. It is a fragmentary sectional view which shows simply the layer structure of a packaging film. It is sectional drawing of a sealing valve. It is a perspective view of the packaging container which concerns on the 2nd Embodiment of this invention. It is a front view which shows the structure of the packaging container of FIG. 8 simply. It is II sectional drawing in FIG. It is a perspective view which shows simply another example of the packaging container which concerns on the 2nd Embodiment of this invention. It is a front view which shows the structure of the packaging container of FIG. 11 simply. It is II sectional drawing in FIG. It is a perspective view of the packaging container which concerns on the 3rd Embodiment of this invention. It is a front view which shows the structure of the packaging container of FIG. 14 simply. It is II sectional drawing in FIG. It is an expanded sectional view showing another example of a functional improvement material simply. It is a perspective view of the packaging container of the other structure of this invention. It is a front view which shows the packaging container of FIG. 18 simply. It is II sectional drawing in FIG. It is a front view of a spout. It is sectional drawing seen from the flange part direction of the spout. It is a front view of the state where the cap was reversely fitted to the spout. It is a figure which shows the measurement result of oxygen permeability.

  DESCRIPTION OF EMBODIMENTS Hereinafter, modes for carrying out the present invention (hereinafter referred to as embodiments) will be described in detail with reference to the drawings. In addition, this invention is not limited by the following embodiment. In addition, constituent elements in the following embodiments include those that can be easily assumed by those skilled in the art and those that are substantially the same. Furthermore, the constituent elements disclosed in the following embodiments can be appropriately combined.

[First Embodiment]
<Packing container>
A packaging container according to a first embodiment of the present invention will be described. FIG. 1 is a perspective view of a packaging container according to the first embodiment of the present invention, FIG. 2 is a front view schematically showing the configuration of the packaging container according to the embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along the line II in FIG. 2, FIG. 4 is a cross-sectional view taken along the line II-II in FIG. 2, and FIG. 5 is an exploded view of the packaging container according to the first embodiment of the present invention. As shown in FIGS. 1 to 5, the packaging container 10 </ b> A includes a container main body 11, an injection part 12, and a partition member 13, so that the partition member 13 extends to the peripheral seal part 25 of the container main body 11. Is provided. The packaging container 10 </ b> A has a food that is hydrated and cooked in one region of which the interior is partitioned by the partition member 13 (not shown. Hereinafter, the food that is hydrated and cooked may be abbreviated as “hydrated food”). Is accommodated, and the functional improvement material 14 is accommodated in the other region. Moreover, as shown in FIG. 3, the injection | pouring part 12 is connected with the area | region in which a hydrated foodstuff is accommodated, and the hydrated foodstuff of 10A of packaging containers is accommodated from the outside by hydration apparatuses, such as a needle for hydration. Liquid is injected into the area. Moreover, in this embodiment, the one area | region in which a hydrated cooking food is accommodated is made into the area | region A, and the other area | region in which the functional improvement material 14 is accommodated is made into the area | region B.

  In the present invention, the hydrolyzed food is a food that can be reconstituted by adding water or hot water. For example, it is made using a freeze-drying method, a spray-drying method, or the like. Eggs, shrimp cocktails or powdered beverages such as soups, teas, juices.

(Container body)
The container body 11 is not particularly limited in shape as long as it can accommodate food such as hydrated food, but as shown in FIG. 1, a side gusset type having gusset portions 16 on both sides of the container body. By using this pouch, it is possible to easily secure a space for accommodating the food and the functional improvement material 14. In the present embodiment, the container body 11 is configured by a side gusset type pouch, but is not limited to this, and may be a flat pouch or a standing pouch.

  The container body 11 includes a front film 21, a rear film 22, and a pair of side films 23 and 24.

  The container body 11 has a peripheral seal portion 25. The peripheral seal portion 25 includes an upper seal portion 25A, a lower seal portion 25B, and a pair of side seal portions 25C. The side seal portion 25C includes a first side seal portion 25C1 formed by the front film 21 and the side films 23 and 24, and a second side seal portion formed by the rear film 22 and the side films 23 and 24. 25C2.

  Moreover, the front film 21, the rear film 22, and the pair of side films 23 and 24 constituting the container body 11 are formed of a packaging film. The packaging film includes at least a base material layer and a sealant layer, and is composed of a plurality of layers. For example, as illustrated in FIG. 6, the packaging film 30 includes a laminated film including a base material layer 31, an intermediate layer 32, and a sealant layer 33. In addition, adhesive layers 34A and 34B made of an adhesive, an anchor coat agent, a thermal adhesive resin, or the like may be provided between the layers.

  The base material layer 31 is selected from materials having printability, strength, heat resistance, and the like, and various thin papers, or non-stretched or stretched films obtained by forming a resin such as polypropylene, polyester, polyamide, etc. may be used. it can. The base material layer 31 is preferably a film obtained by biaxially stretching the resin. In addition, gas barrier properties may be imparted to the base material layer 31 by vapor-depositing a single metal or an oxide such as silicon or aluminum.

  The intermediate layer 32 is formed of a film having a gas barrier property for protecting contents such as a hydrated cooked food. When the packaging film 30 constituting the packaging container 10A includes the intermediate layer 32, the gas barrier property and the light shielding property are imparted to the packaging container 10A, or the strength capable of withstanding the drop impact of the packaging container 10A is imparted. be able to.

  As the intermediate layer 32, for example, in order to provide barrier properties to the intermediate layer 32, a film formed by forming a polyvinyl alcohol resin, a resin made of a saponified ethylene-vinyl acetate copolymer is formed. Barrier film such as film to be formed, metal foil such as aluminum, files with moisture-proof coating such as vinylidene chloride applied to the above various films, and support material consisting of films such as polyester, polypropylene, polyamide, polycarbonate, etc. Or the film etc. which vapor-deposited oxides, such as silicon and aluminum, etc. can be used. Further, as the intermediate layer 32, for example, an aluminum foil, a film obtained by vapor-depositing aluminum on a film, or the like can be used in order to impart light shielding properties to the intermediate layer 32. Further, as the intermediate layer 32, for example, in order to improve the strength of the intermediate layer 32, a support made of a film of polyester, polypropylene, polyamide, polycarbonate, or the like can be used.

  The sealant layer 33 is a layer formed of a heat-sealable resin film that can be fused to each other by heat. The material constituting the sealant layer 33 needs to be a material that can be thermally bonded to the bonding surface of the injection portion 12, and must have mutual adhesiveness when selecting the material of the injection portion 12. . The material constituting the sealant layer 33 is not particularly limited as long as it does not interfere with the taste of the hydrolyzed food and has the necessary strength as a pouch. The material for forming the sealant layer 33 is not particularly limited as long as it is a resin that can be fused to each other by heat. Specifically, for example, low density polyethylene (LDPE), medium density polyethylene (MDPE), high Density polyethylene (HDPE), linear (linear) low density polyethylene (LLDPE), ethylene-α-olefin copolymer polymerized using metallocene catalyst, ethylene / polypropylene random or block copolymer resin, polypropylene , Ethylene-vinyl acetate copolymer (EVA), ethylene-acrylic acid copolymer (EAA), ethylene-ethyl acrylate copolymer (EEA), ethylene-methacrylic acid copolymer (EMAA), ethylene-methacrylic acid Methyl copolymer (EMMA), ionomer resin, heat sealable ethylene Vinyl alcohol resin or copolymerized resin Methylpentene resin, ethylene-propylene copolymer, methylpentene polymer, polybutene polymer, polyolefin resin such as polyethylene, polypropylene or cyclic olefin copolymer, polyolefin resin such as acrylic acid, methacrylic resin Acid-modified polyolefin resins modified with unsaturated carboxylic acids such as acid, maleic acid, maleic anhydride, fumaric acid, itaconic acid, polyvinyl acetate resins, poly (meth) acrylic resins, polyvinyl chloride resins, etc. And the like. These may be used alone or as a mixture of two or more. The sealant layer can be used as a resin film or sheet as described above, or a coating film thereof.

  When polyethylene is used as a material for forming the sealant layer 33, a polymer obtained by polymerizing ethylene derived from biomass in addition to ethylene obtained from fossil fuel may be used as the raw material.

  The adhesive layers 34A and 34B are for increasing the adhesive force between the respective layers described above. The adhesive layer 34A enhances the adhesive force between the base material layer 31 and the intermediate layer 32, and the adhesive layer 34B is the intermediate layer 32. This is a layer having a function of increasing the adhesive force between the sealant layer 33 and the sealant layer 33. The adhesive layers 34A and 34B are formed using an adhesive, a thermoplastic resin, or the like.

When the adhesive layers 34A and 34B are formed using an adhesive, the adhesive layers 34A and 34B are formed by a dry lamination method. The adhesive layers 34A and 34B can be formed by applying an adhesive used for laminating (laminating adhesive) to the surface of a layer to be laminated (for example, a resin layer) and drying it. Examples of laminating adhesives include one-part or two-part cured or non-cured vinyl, (meth) acrylic, polyamide, polyester, polyether, polyurethane, epoxy, and rubber. Other types of adhesives such as a solvent type, an aqueous type, and an emulsion type can be used. As a coating method of the above laminating adhesive, for example, a laminated film is constituted by a direct gravure roll coating method, a gravure roll coating method, a kiss coating method, a reverse roll coating method, a fountain method, a transfer roll coating method, and other methods. It can apply | coat to the application surface of a layer. The coating ^{amount, 0.1g / m 2 ~10g / m} 2 ( dry) are ^{preferred, 1g / m 2 ~5g / m} 2 ( dry) is more preferable.

  When the adhesive layers 34A and 34B are formed using a thermoplastic resin, the adhesive layers 34A and 34B are formed by a melt extrusion lamination method. Thermoplastic resins that can be used for the adhesive resin layer include low density polyethylene resin (LDPE), medium density polyethylene resin (MDPE), high density polyethylene resin (HDPE), linear low density polyethylene resin (LLDPE), and metallocene catalyst. Copolymer resin with ethylene / α-olefin polymerized by using, ethylene / polypropylene copolymer resin, ethylene / vinyl acetate copolymer resin, ethylene / acrylic acid copolymer resin, ethylene / ethyl acrylate copolymer Resin, ethylene / methacrylic acid copolymer resin, ethylene / methyl methacrylate copolymer resin, ethylene / maleic acid copolymer resin, ionomer resin, polyolefin resin, unsaturated carboxylic acid, unsaturated carboxylic acid, unsaturated carboxylic acid Graft polymerization or copolymerization of anhydride and ester monomers Resin, maleic anhydride and the like can be used a graft modified resin to a polyolefin resin. These materials can be used alone or in combination of two or more.

  The thickness of each layer, such as the base material layer 31, the intermediate layer 32, the sealant layer 33, and the adhesive layers 34 </ b> A and 34 </ b> B, constituting the packaging film 30 can be adjusted as appropriate.

  Each layer such as the base material layer 31, the intermediate layer 32, the sealant layer 33, and the adhesive layers 34 </ b> A and 34 </ b> B is a single layer, but is not limited thereto, and each layer may be provided in two or more layers. Good. When any one of the layers is formed of two or more layers, the respective layers constituting each layer may have the same composition or different compositions.

A resin film obtained by forming a resin composition containing PET or the like into a film between the base material layer 31 and the intermediate layer 32 and between the intermediate layer 32 and the sealant layer 33. A layer different from the base material layer 31 may be provided. Although the following laminated films are mentioned as a packaging film used for 10 A of packaging containers, These are illustrations to the last and this invention is not limited to these.
・ Deposition layer / PET (12 μm) / Adhesive / Nylon (25 μm) / Adhesive / Polyethylene (80 μm)
・ Nylon (25 μm) / Adhesive / PET (12 μm) / Adhesive / Polyethylene (80 μm)
PET (12 μm) / adhesive / aluminum foil (9 μm) / adhesive / nylon (15 μm) / adhesive / polyethylene (80 μm)
PET (12 μm) / adhesive / nylon (15 μm) / adhesive / PET (12 μm) / adhesive / polyethylene (80 μm)
PET (12 μm) / adhesive / nylon (25 μm) / adhesive / PET (12 μm) / adhesive / polyethylene (80 μm)
・ Nylon (15 μm) / adhesive / PET (12 μm) / adhesive / nylon (15 μm) / adhesive / polyethylene (80 μm)
The sealant layer 33 of the packaging film constituting the container body 11 is preferably the same as the material of the inlet 41. For example, when the inlet 41 is polypropylene, it is preferable that the sealant layer 33 of the packaging film constituting the container body 11 is also polypropylene.

(Partition member)
The partition member 13 is provided in the container body 11 and partitions the container body 11 into at least two regions. By the partition member 13, the container body 11 is divided into a region A in which the hydrolyzed food and liquid are stored and a region B in which the functional improvement material 14 is stored. For this reason, since the functional improvement material 14 accommodated in the area | region B of the packaging main body 11 does not contact the hydrolyzed foodstuff accommodated in the area | region A directly, the food for hydrolysis cooking may be contaminated with a functional improvement material. Disappear. Moreover, since the partition member 13 is made of a polyethylene-based resin film that allows gas such as oxygen and water vapor to pass therethrough but does not allow liquid or the like to pass therethrough, the gas such as oxygen and water vapor existing in the region A is separated from the partition member 13. However, the liquid injected into the region A when the uncooked food is hydrated does not come into contact with the functionality improver 14.

  The partition member 13 has a function of isolating the functional improvement material 14 accommodated in the region B from the cooked food accommodated in the region A of the packaging body 11. That is, it is possible to prevent the functional improvement material 14 from coming into direct contact with the hydrolyzed food contained in the region A. Moreover, it can prevent that the liquid inject | poured into the area | region A of the foodstuff and the container inside 10 permeate | transmits the area | region B (area | region in which the functional improvement material 14 was accommodated). Therefore, even when liquid is injected from the injection unit 12 into the region A of the container body 11 when the food previously stored in the region A of the container body 11 is hydrated and cooked, the liquid is discharged from the region A. Exudation through the partition member 13 can be prevented.

  Furthermore, since the partition member 13 is a gas-permeable member, the function of the gas such as oxygen and water vapor existing in the region A where the cooked food is stored in the region B of the container body 11 through the partition member 13. It can be absorbed by the property improving material 14. Thereby, the dry or deoxygenated state of the entire container body 11 can be maintained at a high level. As a result, the cooked food accommodated in the region A of the packaging container 10A can be stored while maintaining the quality over a long period of time.

  In the present embodiment, the partition member 13 is composed of a partition film 26 </ b> A formed in a sheet shape. For example, as illustrated in FIG. 5, the partition film 26 </ b> A has substantially the same shape as the front film 21 and the rear film 22. be able to. As shown in FIG. 5, after the partition film 26A is inserted between the rear film 22 and the side films 23 and 24, the peripheral seal portion 25 (see FIG. 1) of the container body 11 is formed. As shown in FIGS. 3 and 4, the partition film 26 </ b> A is fixed between the rear film 22 and the side films 23 and 24. That is, in the present embodiment, the peripheral seal portion 25 (see FIG. 1) is obtained by melting the sealant layer 33 (see FIG. 6) of the front film 21, the rear film 22, and the side films 23 and 24 constituting the container body 11. In addition, the partition film 26A is formed by melting. The partition film 26A does not necessarily have substantially the same shape as the front film 21 and the rear film 22, and may have any shape as long as it can be provided so as to extend to the second side seal portion 25C2. it can.

As described above, the partitioning member 13 does not transmit the hydrated food contained in the container interior 10 and the liquid injected into the container interior 10 when the food is hydrated and allows gas to permeate. As such a partition member, a polyolefin resin film having a density of 1.0 g / cm ³ or less is used in the present embodiment.

  Examples of the polyolefin resin film used in this embodiment include linear low density polyethylene (LLDPE), low density polyethylene (LDPE), medium density polyethylene (MDPE), high density polyethylene (HDPE), polypropylene (PP), poly A simple substance such as methylpentene, or a copolymer or modified product such as ethylene-propylene block copolymer, ethylene-propylene random copolymer, maleic anhydride-modified polyethylene, maleic anhydride-modified polypropylene, or a mixture of the above resins Can be used, and among these, linear low density polyethylene (LLDPE) and low density polyethylene (LDPE) can be suitably used. Further, the partition member 13 is preferably made of the same material as the sealant layer 33 of the packaging film 30 constituting the container body 11.

The polyolefin resin film used for the partition member 13 has a density of 1.0 g / cm ³ or less. If the polyolefin resin film has a density of 1.0 g / cm ³ or less, a gas such as oxygen and water vapor can be permeated to some extent without allowing liquid such as water as well as solids to pass through. In 10A, the functional improvement material 14 can be functioned effectively. A preferable density is 0.95 g / cm ³ or less, and more preferably 0.93 g / cm ³ or less. In addition, the measurement method of the density of the partition member 13 can use a conventionally well-known measurement method, for example, the mass of the sample which cut | disconnected the polyolefin-type resin film of predetermined thickness to the predetermined magnitude | size, and measured the mass of a sample The density can be calculated by dividing by the volume of the sample calculated from the size and thickness.

  Moreover, it is preferable that the partition member 13 consists of an unstretched polyolefin-type resin film. In the present invention, the unstretched polyolefin resin film refers to a polyolefin resin film having a tensile modulus of 1000 MPa or less, and preferably the polyolefin resin film has a tensile modulus of 100 to 500 MPa. By using a polyolefin resin film having a tensile elastic modulus within the above range, it is possible to efficiently transmit gas such as oxygen and water vapor without allowing food and liquid to pass through. The tensile modulus means a value measured according to JIS K 7127, and can be measured using, for example, a Tensilon universal testing machine (“RTC-1310A”, manufactured by ORIENTEC).

  In particular, the partition member 13 is preferably an unstretched polyethylene film made of linear low density polyethylene (LLDPE), low density polyethylene (LDPE), or the like, and has a degree of orientation crystallization as compared with the stretched film. Less oxygen and water vapor permeate more easily. Moreover, an unstretched film has a low elastic modulus compared with the stretched film, Therefore It can suppress that a crack generate | occur | produces by bending. In the present embodiment, when the partition member 13 is an unstretched polyethylene film made of linear low density polyethylene (LLDPE), low density polyethylene (LDPE), or the like, the side seal portion 25C is formed. Therefore, the productivity of the packaging container 10A can be increased.

  The thickness of the partition member 13 is preferably 50 to 80 μm. The smaller the thickness of the partition member 13 (that is, the thinner the unstretched polyolefin resin film), the easier it is for gases such as oxygen and water vapor to pass through. However, if the thickness of the partition member 13 is less than 50 μm, The partition member 13 may be pierced by the performance improving material 14, and the food for water cooking may be contaminated by the functional improving material 14. For example, when the functional improvement material 14 has a rectangular shape as shown in FIG. 1 (that is, when the functional improvement material 14 is packaged by a rectangular inner packaging material or the functional improvement material 14 itself is rectangular. The partition member 13 may be damaged by the corners of the functional improvement material 14 and may be broken through in some cases. On the other hand, if the partition member 13 is too thick, the gas permeability is lowered, and the functional improvement material 14 may not function effectively.

  Moreover, in order to provide designability to one or both surfaces of the partition member 13, it is preferable to give an embossing and provide a pattern. The pattern can be formed by heat-pressing the partition film 26A with an emboss plate from one or both sides of the partition film 26A using a known embossing machine.

  By the partition member 13 described above, the container body 11 is divided into a region A in which the food for water cooking is stored and a region B in which the functional material 14 is stored, so that the functional material 14 is used for water cooking. It is isolated from food so as not to come into direct contact. Further, as described above, since the partition member 13 allows gas to permeate, gases such as oxygen and water vapor existing in the region A in which the food for hydration cooking is stored are absorbed by the functional improvement material 14 through the partition member 13. The Furthermore, when water is poured into the packaging container 11 for water cooking, the liquid is poured only into the region A where the food for water cooking is stored, and the partition member 13 does not allow the liquid to pass through, so the liquid improves functionality. There is no contact with the material 14.

  As the functional improvement material 14, any conventionally known material can be used as long as it improves the hygiene, storage stability, etc. of the cooked food accommodated in the container body 11. An oxygen agent etc. are mentioned. Examples of the desiccant include zeolite, molecular sieve, silica gel, activated alumina, and the like. These may be used alone or in combination. As oxygen scavengers, sulfites, bisulfites, dithionite, hydroquinone, catechol, resorcin, pyrogallol, gallic acid, longgarit, ascorbic acid or salts thereof, isoascorbic acid or salts thereof, sorbose, glucose, lignin , Dibutylhydroxytoluene, butylhydroxyanisole, ferrous salt, iron powder, and the like. These may be used alone or in combination. Moreover, the shape of the above-mentioned functional improvement material 14 can use the thing of various shapes, such as a powder form, a granular form, a block shape, and a sheet form. Moreover, as a form of the functional improvement material 14, a small bag shape in which the functional improvement material 14 such as a powder form or a granular form is packaged by an internal packaging material having gas permeability may be used.

(Injection part)
The injection part 12 is for injecting liquid into the above-mentioned area A (area in which the hydrolyzed food is stored), and includes a sealing valve 43 that prevents the liquid from flowing out to the outside. The injection portion 12 includes a tubular injection port 41 positioned outside the container body 11 and a flange portion 42 formed to be connected to the injection port 41 and welded to the inner edge of the container body 11. Yes. The sealing valve 43 is fitted inside the injection port 41. The injection port 41 and the flange portion 42 are formed in a cylindrical shape. Injecting means is inserted into the inlet 41 and the flange portion 42. A liquid can be injected into the container body 11 by inserting a liquid injection means from the injection part 12. The injection means is not particularly limited as long as it can inject a liquid, and for example, a water injection needle, a syringe, or the like can be used.

  The flange portion 42 is provided with a guide tube 44 for guiding a needle needle. When the liquid injection means is a sharp device such as a water injection needle, the guide pipe 44 is inserted into the flange portion 42 so that the water injection needle does not break or bend during the liquid injection means. Can do. Further, as shown in FIG. 3, in the present embodiment, the flange portion 42 is fixed to the front film 22 and the partition member 13.

  The inner diameters of the pipes of the inlet 41 and the flange portion 42 are not particularly limited and are appropriately adjusted by the liquid injection means, and are, for example, about 3 to 10 mm.

  The sealing valve 43 has a wall shape corresponding to the inner shape of the injection port 41 and is formed so as to fit inside the injection port 41. In the present embodiment, the sealing valve 43 is formed in a cylindrical shape corresponding to the internal space of the injection port 41. Thereby, the inside of the sealing valve 43 can be inserted into the liquid injection means.

  FIG. 7 is a cross-sectional view of the sealing valve 43. As shown in FIG. 7, the sealing valve 43 is provided with a disk-shaped seal portion 45 inside. Since the sealing valve 43 has the seal 45, the inside and outside of the packaging container 10A can be shielded, so that the inside of the packaging container 10A can be sealed.

  The sealing valve 43 is preferably formed of an elastic member. When the sealing valve 43 is formed of an elastic material, when the liquid injection means is passed through the seal portion 45 of the sealing valve 43, liquid leakage from the penetrating portion is suppressed and the liquid injection means from the injection portion 12 is used. It is possible to prevent the liquid in the packaging container 10 </ b> A from flowing backward from the sealing valve 43 and leaking even after it is extracted. The outer diameter of the sealing valve 43 is preferably larger than the inner diameter of the injection part 12. When the sealing valve 43 is formed of an elastic member, the sealing valve 43 is sealed when the sealing valve 43 is fitted to the injection part 12 by making the outer diameter of the sealing valve 43 larger than the inner diameter of the injection part 12. The stop valve 43 is compressed. In a state where the sealing valve 43 is compressed, stress concentrates on a portion of the sealing valve 43 that is easily deformed. For example, when the through hole is formed in the seal portion 45 by the liquid injection means, the through hole of the seal portion 45 is thin and compressive stress is concentrated, so that the through hole is closed by the compressive stress. Thereby, the packaging container 10A can prevent the cooked food in the packaging container 10A from flowing backward and leaking from the injection part 12 to the outside of the packaging container 10A after pouring water into the packaging container 10A.

  As the elastic material, for example, elastomers such as silicone rubber and olefin can be suitably used.

  Although the thickness of the seal | sticker part 45 is not specifically limited, For example, it is preferable that it is 1-3 mm.

  The inlet 41 and the flange portion 42 may be separate members, but are preferably formed integrally from the viewpoint of manufacturing cost.

  Since the injection port 41 and the flange portion 42 need to be weldable to the inside of the packaging container 10A, the injection port 41 and the flange portion 42 are injection-molded using a thermoplastic resin such as polyethylene, polystyrene, or polypropylene, depending on the material of the packaging container 10A. It is preferable. Among these thermoplastic resins, it is preferable to use polyethylene, particularly low density polyethylene (LDPE).

  Since the packaging container 10A has the above-described configuration, the cooked food such as soup, rice, scrambled eggs, shrimp cocktail, or powdered drinks such as soup, tea, tea, juice, etc. is added from the injection unit 12. After the food is cooked, one side of the packaging container 10A is cut and the cooked food can be taken out and eaten, or the cooked food in the packaging container 10A can be eaten without opening the packaging container 11.

  The shape of the packaging container 10 </ b> A is not particularly limited, and is appropriately designed depending on the type, capacity, and the like of the hydrolyzed food.

  Although the magnitude | size of 10A of packaging containers can be suitably adjusted according to the quantity of the hydrolyzed cooking food to accommodate, it is designed to 1-100g, for example, Preferably it is 3-50g.

(Manufacturing method of packaging container)
The packaging container 10A can be manufactured in the same manner as a normal stand-type or gusset-type pouch, flat pouch, or standing pouch. An example of the manufacturing method of a packaging container is demonstrated. As shown in FIG. 5, the side surface of the packaging container 10 </ b> A is configured between the front film 21 and the rear film 22 with the heat sealing surfaces of the front film 21 and the rear film 22 that constitute both surfaces of the packaging container 10 </ b> A facing each other. A pair of side films 23 and 24 to be inserted are inserted. Next, a partition film 26 </ b> A is inserted between the rear film 22 and the pair of side films 23 and 24. Next, the flange portion 42 of the injection portion 12 is sandwiched between the front film 21, the rear film 22, and the partition film 26A. Next, the front film 21, the rear film 22, the partition film 26A, and the side wall edges of the pair of side films 23 and 24 are heat sealed to form the upper seal part 25A, the lower seal part 25B, and the side seal part 25C. . At this time, one side seal portion 25C is not formed. And the foodstuff to the area | region A and the functional improvement material 14 to the area | region B are accommodated from the opening formed in one side part of 10 A of packaging containers. Thereafter, the unsealed portion is heat-sealed to form the packaging container 10A shown in FIG.

  As a heat sealing method, a conventionally known method can be employed. For example, a bar seal, a rotary roll seal, a belt seal, an impulse seal, a high frequency seal, an ultrasonic seal, and the like can be employed.

  In addition, the heat sealing is performed in a state where the flange portion 42 is sandwiched between the front film 21 and the partition film 26A. However, the present invention is not limited to this, and a container other than the portion where the flange portion 42 of the injection portion 12 is provided. After heat-sealing the peripheral edge portion, the flange portion 42 may be inserted between the front film 21 and the partition film 26A and heat-sealed so as to be narrowed.

  As described above, the packaging container 10 </ b> A includes the partition member 13 made of a polyolefin resin film having a predetermined density or less in the container body 11, and the partition member 13 is provided to extend to the peripheral seal portion 25 of the container body 11. As a result, it is partitioned into a region A in which food and liquid are stored and a region B in which the functional improvement material 14 is stored. The packaging container 10A can maintain the preservability of the food contained in the container main body 11 in a high state, and the functionality improving material 14 comes into contact with the liquid even when the liquid is injected into the container main body 11. Can be prevented. Moreover, since the partition member 13 can be attached to the container main body 11 when forming the peripheral seal part 25 of the container main body 11, the productivity of the packaging container 10A is excellent.

[Second Embodiment]
A packaging container according to a second embodiment of the present invention will be described with reference to the drawings. In addition, about the member similar to the 1st Embodiment of this invention, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted. 8 is a perspective view of the packaging container according to the second embodiment of the present invention, FIG. 9 is a front view schematically showing the configuration of the packaging container, and FIG. 10 is II in FIG. It is sectional drawing. As shown in FIGS. 8 to 10, the packaging container 10 </ b> B is provided such that at least a part of the partition member 13 does not extend to the peripheral seal portion 25 of the container body 11. The partition member 13 is provided so that one side 51 thereof and a part of the upper portion 52 and the lower portion 53 extend to the second side seal portion 25C2 of the container body 11, and the other side of the partition member 13 is provided. The portion 54 is provided so as not to extend to the peripheral seal portion 25 of the container body 11.

  In this embodiment (packaging container 10B), the partition member 13 is comprised from the partition film 26B formed in the sheet form, for example, as shown in FIG. 9, the partition film 26B can be made into a rectangular shape. A part of the upper part 52 and the lower part 53 of the partition film 26B and the other side part 54 are heat-sealed with the heat sealant layer 33 of the rear film 22, and a pocket seal part 55 having a U-shaped seal portion is formed. And after inserting a functional improvement material from one side part 51, the one side part 51 of the partition film 26B is heat-sealed with the heat sealant layer 33 of the rear surface film 22, thereby the pocket seal part 55 and the second side. A region B surrounded by the partial seal portion 25C2 is formed. In addition, although the example which inserts the functional improvement material 14 from the one side part 51 was demonstrated in the above-mentioned example, it is not limited to this.

  Since the packaging container 10B can take a wider space in the region A than the packaging container 10A according to the first embodiment of the present invention shown in FIGS. 1 to 5, it can accommodate more food. it can.

  Moreover, in this embodiment, although the case where it provided so that at least one part of the partition member 13 might not be extended to the peripheral seal part 25 of the container main body 11 was demonstrated, the structure of this embodiment is limited to this. is not. An example of another structure of the packaging container 10B is shown in FIGS. FIG. 11 is a perspective view schematically illustrating another example of the packaging container, FIG. 12 is a front view schematically illustrating the configuration of the packaging container, and FIG. 13 is a cross-sectional view taken along the line II in FIG. is there. As shown in FIGS. 11 to 13, the packaging container 10 </ b> C has one side 51, an upper part 52, a lower part 53, and the other side part 54 of the partition member 13 extending to the peripheral seal part 25 of the container body 11. There is no provision.

  In this embodiment (packaging container 10C), the partition member 13 is comprised from the partition film 26C formed in the sheet form, for example, as shown in FIG. 12, the partition film 26C can be made into a rectangular shape. One side 51, upper part 52, and lower part 53 of the partition film 26C are heat-sealed with the heat sealant layer 33 of the rear film 22, and then a functional material is inserted from the other side part 54, and then the partition film 26C. By heat-sealing the other side portion 54 and the heat sealant layer 33 of the rear film 22, a region B surrounded by a square-shaped pocket seal portion 56 is formed. In the above-described example, the example in which the functional improvement material 14 is inserted from the other side portion 54 has been described. However, the present invention is not limited to this.

  Even in the packaging container 10C, since the space of the region A can be made wider than the packaging container 10A according to the first embodiment of the present invention shown in FIGS. Can contain food.

[Third Embodiment]
A packaging container according to a third embodiment of the present invention will be described with reference to the drawings. In addition, about the member similar to the 1st and 2nd embodiment of this invention, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted. FIG. 14 is a perspective view of a packaging container according to the third embodiment of the present invention, FIG. 15 is a front view schematically showing the configuration of the packaging container, and FIG. 16 is II in FIG. It is sectional drawing. As shown in FIGS. 14 to 16, the packaging container 10 </ b> D includes a partition member 13 formed in a bag shape in the container body 11. In the third embodiment, the partition member 13 has two surfaces 13 </ b> A and 13 </ b> B, and the functional improvement material 14 is included inside the partition member 13.

  In the packaging container 10D, the partition member 13 may be composed of one partition film 26D, or may be composed of two or more partition films 26D. Here, the example which comprises the partition member 13 from the two partition films 26D is demonstrated.

  In the present embodiment, the partition member 13 has a peripheral seal portion 61. One partition film 26 </ b> D and the other partition film 26 </ b> D are overlapped to face each other, and the upper part 62, the lower part 63, and one side part 64 are heat-sealed, and then the functional improvement material is inserted from the other side part 65. After that, the other side portion 65 is heat-sealed, so that a region B surrounded by the peripheral seal portion 61 is formed. In the present embodiment, the region B is formed only by the partition member 13 and the functional improvement material 14 is included. In addition, although the example which inserts the functional improvement material 14 from the one side part 65 was demonstrated in the above-mentioned example, it is not limited to this. When the partition member 13 is formed by folding one partition film 26D in half, the peripheral seal portion may not be formed at the folded portion.

  In the packaging container 10D as well as the packaging container 10B, the space of the region A can be made wider than the packaging container 10A according to the first embodiment of the present invention shown in FIGS. Of food can be accommodated.

  In addition, the functional improvement material 14 is used by containing a functional improvement material such as a desiccant or an oxygen scavenger in the inner packaging material as in the above embodiments, but the partition member 13 has two surfaces 13A, Since it is formed in a bag shape with 13B, as shown in FIG. 17, the functional improvement material 14 of various shapes such as powder and granule is contained in the partition member 13 as it is without being accommodated in the inclusion material. Can be used.

  Since the packaging container 10D can accommodate the functional improvement material directly in the partition member 13, the packaging material for packaging the functional improvement material is not required, and the functional improvement material is not included in the internal packaging material. The partition member 13 can be used directly.

  In the present embodiment, the partition member 13 may be fixed to the container body 11 or may not be fixed.

[Packaging containers of other configurations]
The packaging container of the other structure of this invention is demonstrated with reference to drawings. In addition, about the member similar to the 1st Embodiment of this invention, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted. 18 is a perspective view of a packaging container having another configuration according to the present invention, FIG. 19 is a front view schematically showing the packaging container having another configuration according to the present invention, and FIG. It is -I sectional drawing. As shown in FIGS. 18 to 20, the packaging container 10 </ b> E includes a pouring part 71 in the packaging container 10 </ b> A according to the first embodiment of the present invention shown in FIGS. 1 to 6. That is, the packaging container 10 </ b> E includes a container main body 11, an injection part 12, a partition member 13, and an extraction part 71.

(Pouring section)
The extraction part 71 is provided at a position facing the injection part 12 of the packaging container. The structure of the extraction | pouring part 71 is shown in FIGS. 21 is a front view of the spout, FIG. 22 is a cross-sectional view seen from the flange portion direction of the spout, and FIG. 23 is a front view of the spout fitted with the cap reversed. It is. The extraction portion 71 includes an outlet 72, a second flange 73, and a cap 74. In addition, in this embodiment, although the extraction | pouring part 71 is provided in the position facing the injection | pouring part 12 of a packaging container, it is not limited to this, Injection | pouring of packaging containers 11, such as the side part seal part 25C, It suffices if it is provided at a position different from the part 12.

  The spout 72 is provided outside the packaging container 10E and is formed in a cylindrical shape. The spout 72 has a thin portion 75 formed at the upper end thereof.

  The second flange 73 is connected to the spout 72 and is welded to the edge of the inner surface of the packaging container 10E. As shown in FIG. 21, the second flange 73 has a substantially diamond shape in cross section, and has a cylindrical cavity 76 inside. By making the cross-sectional shape of the 2nd flange 73 into a substantially rhombus, it can be made easy to weld to the packaging film which comprises the container main body 11. FIG. In the present embodiment, the shape of the cross section of the second flange 73 is approximately rhombus, but is not limited thereto, and may be other shapes such as a circle and a rectangle.

  The cap 74 is attached to the thin portion 75 at the upper end of the spout 72. Since the cap 74 is attached to the spout 72 via the thin portion 75, the cap 74 can be attached to and detached from the spout 72 via the thin portion 75. The cap 74 has a pair of knobs 77 on the outer side surface. By rotating the knob 77 in one direction, the thin portion 75 can be easily rotated along with the rotation of the knob 77. When the knob 77 is rotated in one direction, the thin portion 75 is twisted in the rotation direction of the knob 77 and is damaged, so that the cap 74 can be easily separated from the spout 72.

  Further, the cap 74 is provided with a stepped portion 78 at the periphery of the upper end portion thereof. The cap 74 is formed in a semicircular cap shape from the stepped portion 78. The outer diameter of the upper end is smaller than the outer diameter of the cap 74 connected to the spout 72 and is substantially the same as the inner diameter of the spout 72. After the cap 74 is separated from the spout 72, the separated cap 74 is rotated in the reverse direction, and the upper end side of the upper end portion is fitted into the spout 72 as shown in FIG. Therefore, even if it is a case where eating and drinking of the cooked food in the packaging container 10E is interrupted on the way, since the extraction | pouring part 71 can be sealed with the cap 74, the inside of the container main body 11 was excellent hygienically. Can keep the state.

  The spout 72 and the cap 74 are preferably formed by integral molding. By integrally forming the spout 72 and the cap 74, the manufacturing cost can be reduced, and the trouble of mounting the cap 74 on the spout 72 can be omitted.

  The spout 72 and the knob 77 may also be separate members, but are preferably formed integrally from the viewpoint of manufacturing cost.

  Since the cylindrical spout 72, the second flange 73, and the cap 74 need to be welded to the inside of the container body 11, a thermoplastic resin such as polyethylene, polystyrene, or polypropylene is used although it depends on the material of the container body 11. It is preferable that it is injection molded. Among the thermoplastic resins, it is particularly preferable to use linear low density polyethylene (LLDPE).

  Thus, since the packaging container 10E is further provided with the extraction | pouring part 71 in the position which opposes the injection | pouring part 12, even if liquid is inject | poured in the packaging container 10E, the functional improvement material 14 contacts with a liquid. Is efficiently consumed without remaining in the packaging container 10A without opening the packaging container 11 after cooking from the pouring part 12 and cooking the cooked food, while maintaining high storage stability. Can do. Further, in addition to the above-mentioned hydrolyzed food, the packaging container 10E has a mouth directly on the pouring part 71 when the hydrolyzed food is a fluid food such as soup, tea, juice, jelly, etc. Then, the cooked food can be eaten by suction or applying external pressure to the packaging container 10E.

  In addition, in the above, although the case where 10 A of packaging containers which concern on the 1st Embodiment of this invention shown in the said FIGS. 1-5 were provided with the extraction | pouring part 71 was described, this embodiment is limited to this. However, the present invention can be similarly applied to the second and third embodiments.

  In the above, although the case where the functional improvement material 14 was accommodated in the container main body 11 was demonstrated, this embodiment is not limited to this, The functional improvement material for improving the preservability of foodstuffs If it is, it can be used similarly.

  In each of the above embodiments, the case where the cooked food such as soup, rice, and powdered drink is contained in the container body 11 has been described. However, the present embodiment is not limited to this, for example, Steak, chicken, ham and other meat dishes, fish dishes, fruits, puddings and other retort foods and canned foods, temperature-stabilized foods that can be eaten as they are, sweets such as nuts and cookies, dried fruits, beef jerky and other natural foods It can be used in the same manner for shaped foods, semi-dried foods, fresh foods such as fruits and raw vegetables, irradiated foods sterilized by irradiation, and seasonings.

<Package for hydrolyzed food>
The entire packaging container according to the present invention can be packaged with an exterior material such as a light-shielding film to form a package for hydrolyzed food. As the light-shielding film, for example, a film in which an aluminum foil is laminated or a film in which aluminum is deposited can be suitably used. In the packaging container according to this embodiment, the packaging film constituting the container body may be provided with a barrier layer for long-term storage of the hydrolyzed food as described above. It may be difficult to see. Therefore, as a packaging film constituting the container body, a packaging film having excellent visible light permeability may be used to improve the visibility of the hydrolyzed food in the packaging container. There is a possibility of alteration of cooked food. Therefore, by using the package for hydrolyzed food obtained by packaging the packaging container according to the present embodiment with an exterior material as a space food package, due to external factors such as moving to visible light or space, It is possible to suppress the alteration of the hydrolyzed food.

  Further, the packaging container according to the present invention described above can be suitably used for applications requiring hygiene such as emergency food and medical use, in addition to being used for space food applications.

  Next, the present invention will be specifically described with reference to examples. However, the present invention is not limited by these examples.

<Example 1>
[Preparation of partition film]
A polyethylene resin film formed with LLDPE1 (“V-941”, manufactured by Aicello Chemical) was used as a partition film. A polyethylene resin film was cut into a 10 cm square (10 cm × 10 cm), and the mass and the measured value of the film thickness of five sheets were measured. And the density was calculated by calculating | requiring the volume of what laminated | stacked five partition films using the measured value of the thickness of this partition film, and dividing the measured mass by the calculated volume. The obtained density was as shown in Table 1 below.

  Further, the tensile modulus of elasticity in the MD direction and TD direction of the polyethylene resin film in the MD direction and the TD direction is measured by a measuring method based on JIS K 7127 using a Tensilon universal testing machine (“RTC-1310A”, manufactured by ORIENTEC). MPa). The tensile modulus in the MD direction and the TD direction was measured three times, and the average value was obtained. The obtained tensile elastic modulus was as shown in Table 1.

(Preparation of packaging film)
A thickness of 25 μm by a dry lamination method using a urethane-based two-component curable adhesive on one surface of a 12 μm-thick polyethylene terephthalate film (“IB-PET-UB”, manufactured by DNP Technopack Co., Ltd.) having a deposited layer. A polyethylene film having a thickness of 80 μm is laminated by a dry lamination method in which a biaxially stretched nylon film (“N-1202” manufactured by Toyobo Co., Ltd.) is laminated and a urethane two-component curable adhesive is further used on the laminated nylon film. By laminating films (PEF: “TUX-FCS”, manufactured by Mitsui Chemicals, Inc.), a packaging film for constituting a front film, a rear film, and a pair of side films of a container body to be described later was obtained.

[Production of packaging container]
The container main body in which the front film, the rear film, and the pair of side films were opposed to each other on the sealant layer side and a peripheral seal part was formed except for one side part was manufactured. Moreover, after making a pair of partition film oppose and inserting an oxygen scavenger ("ZP-50", Mitsubishi Gas Chemical Co., Ltd.) between them, the partition member was manufactured by forming a peripheral seal part. Next, from the opening formed on one side of the container body, after storing the partition member containing the oxygen scavenger and the white rice freeze-dried as food, one side of the container body is heat sealed. Thus, a packaging container was manufactured. The packaging container corresponds to the third embodiment of the present invention.

<Example 2>
The same procedure as in Example 1 was performed except that LLDPE1 was changed to LDPE (“S-201K”, manufactured by Aicello Chemical Co., Ltd.) and the film thickness was changed as shown in Table 1. Table 1 shows the density and tensile modulus of the resulting partition film.

<Example 3>
The same procedure as in Example 1 was performed except that a partition film was produced by changing LLDPE1 to LLDPE2 (“N-290”, manufactured by Aicello Chemical Co., Ltd.). Table 1 shows the density and tensile modulus of the resulting partition film.

<Example 4>
This was performed in the same manner as in Example 1 except that the partition film was produced by changing LLDPE1 to LLDPE3 ("SR-WN Shiro", manufactured by DNP Techno Film Co., Ltd.). Table 1 shows the density and tensile modulus of the resulting partition film.

<Example 5>
The same procedure as in Example 1 was performed except that LLDPE1 was changed to LLDPE3 ("SR-WN Shiro", manufactured by DNP Techno Film Co., Ltd.), and the partition film was produced by changing the film thickness. Table 1 shows the density and tensile modulus of the resulting partition film.

<Example 6>
The same procedure as in Example 1 was performed except that LLDPE1 was changed to HDPE (“H-500S”, manufactured by Aicello Chemical Co., Ltd.) and the partition film was produced by changing the film thickness. Table 1 shows the density and tensile modulus of the resulting partition film.

<Comparative Examples 1 and 2>
Example 1 except that LLDPE1 was changed to PET (“Hytron PG”, manufactured by Tamapoli) or PAN (“Hytron BX”, manufactured by Tamapoli), and a partition film was prepared by changing the film thickness. The same was done. Table 1 shows the density and tensile modulus of the obtained separate film.

<Evaluation>
The oxygen concentration in the area | region (equivalent to the area | region A shown in FIG. 16) in which the oxygen absorber isolated by the partition member of each packaging container obtained in Examples 1-6 and Comparative Examples 1 and 2 is not accommodated. It was measured how it changed over time. The measurement results were as shown in FIG. The oxygen concentration was measured as follows.

(Measurement of oxygen concentration)
Each packaging container obtained in Examples 1 to 6 and Comparative Examples 1 and 2 was subjected to non-destructive measurement optical fiber (POF-) manufactured by Taitec using a non-destructive oxygen measuring device (“Fibox 3”, manufactured by PreSens). L2.5-1SMA) is applied to the sensor chip that has been previously affixed to the inner surface of the container by applying the detection end from which the excitation light is emitted, so that the oxygen scavenger isolated by the partition member of the packaging container is not accommodated. The oxygen concentration was measured. The oxygen concentration was measured in a state where the air in the packaging container was not deaerated.

  As shown in FIG. 24, the oxygen concentration tended to decrease in the order of Examples 1, 2, 3, 4, 5, 6, and Comparative Examples 1 and 2. In Comparative Examples 1 and 2, it was confirmed that the oxygen concentration was 20% or more even after 200 hours had elapsed from the start of measurement. On the other hand, in Examples 1 to 6, it was confirmed that the oxygen concentration became half or less of the initial value within 400 hours from the start of measurement. In Examples 1 to 4, it was confirmed that within 200 hours from the start of measurement, the oxygen concentration became half or less of the initial value.

  As is clear from this test result, the packaging container using a partition film made of a predetermined polyolefin resin film has a residual oxygen content in the packaging container as compared with those using other films such as PET and PAN as the partition film. It can be seen that can be absorbed in a shorter time.

10A to 10E Packaging container 11 Container main body 12 Injection part 13 Partition member 13A, 13B Surface 14 Functional improvement material 16 Gusset part 21 Front film 22 Rear film 23, 24 Side film 25 Perimeter seal part 25A Upper seal part 25B Lower seal part 25C Side seal part 25C1 First side seal part 25C2 Second side seal part 26A to 26D Partition film 30 Packaging film 31 Base layer 32 Intermediate layer 33 Sealant layer 34A, 34B Adhesive layer 41 Inlet 42 Flange 43 Sealing valve 44 Guide pipe 45 Seal portion 51 One side portion 52 Upper portion 53 Lower portion 54 The other side portion 55, 56 Pocket seal portion 61 Peripheral seal portion 62 Upper portion 63 Lower portion 64, 65 A pair of side portions 71 Outlet portion 72 Outlet 73 First 2 flange 74 cap 75 thin part 7 6 Cavity 77 Knob 78 Step

Claims (12)

A packaging container for containing water-cooked food used in a space food package,
A container body for containing food,
An injection part for injecting a liquid for water cooking into the container body;
A partition member for partitioning a functional improver for improving the storage stability of the food in the container body from an area in which the food and liquid are stored;
With
The injection portion includes a sealing valve that prevents the liquid from flowing out to the outside,
Said partition member, said food and liquid does not transmit, and gas is transmitted, Ri Do density from 1.0 g / cm ³ or less of the polyolefin resin film,
The polyolefin resin used for the polyolefin resin film is selected from the group consisting of linear low density polyethylene, low density polyethylene, and mixtures thereof,
Tensile modulus of the polyolefin-based resin film is characterized 100~500MPa der Rukoto packaging container. The packaging container according to claim 1, wherein the container body is configured by a front film, a rear film, and two side films. The packaging container according to claim 2, wherein the partition member is inserted between the rear film and the side film. The packaging container as described in any one of Claims 1-3 whose thickness of the said partition member is 50-80 micrometers. The container body includes a peripheral seal portion;
The packaging container according to any one of claims 1 to 4, wherein the partition member is provided to extend to the peripheral seal portion of the container body. The container body includes a peripheral seal portion;
The packaging container according to any one of claims 1 to 4, wherein at least a part of the partition member is provided so as not to extend to the peripheral seal portion of the container body.   The packaging container according to any one of claims 1 to 6, wherein the partition member has one surface and the other surface, and the functional improvement material is included in the partition member.   The packaging container as described in any one of Claims 1-7 in which the said container main body has a gusset part in both sides. The injection part is
An inlet located outside the container body;
A flange portion formed in connection with the inlet and welded to the container body;
With
The packaging container according to any one of claims 1 to 8, wherein the sealing valve is fitted inside the injection port.   The packaging container as described in any one of Claims 1-9 provided with the extraction | pouring part for pouring out the said liquid in the said container main body. The pouring part is located on the outside of the container;
A flange formed in connection with the spout and welded to the packaging container;
The packaging container according to claim 10, further comprising a cap that is detachably attached to an upper end of the spout.   The space food package formed by packaging the whole packaging container as described in any one of Claims 1-11 with an exterior material.

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