JP2011184063A - Ethanol packaging bag for food preservation, preservation method and use of the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ethanol packaging bag for food preservation which is effective in controlling the propagation of mold and which preserves food hygienically and safely even though its packaging material is printed and also to provide the preservation method and use suitable for the ethanol packaging bag. <P>SOLUTION: In an ethanol packaging bag for food preservation which is formed by sealing a bag shaped packaging material filled with ethanol water solution, the packaging material of the ethanol packaging bag is structured with a multi-layer film comprising a stretched nylon film whose front face is printed and an ethylene-vinyl acetate copolymer layer laminated on the printed face of the nylon film. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an ethanol packaging bag for food preservation used for suppressing mold growth in food, a preservation method and a use method thereof.

It has been known for a long time that ethanol has a growth-inhibiting effect and a bactericidal effect on microorganisms such as molds, and the growth of microorganisms in foods is suppressed by using such effects. For example, a product in which ethanol is adsorbed on an adsorbent such as silica or cyclodextrin and filled in a paper bag is sold as a food preservation tool. In the product, ethanol is volatilized from the adsorbent and the gas is brought into contact with food to exert a bactericidal effect. However, since the product uses a paper bag, paper dust is likely to be generated during manufacturing (when cutting paper) or handling the product during transportation, etc. Problem arises. In addition, in order to apply to the preservation of a wide range of foods including foods with oils, the paper is subjected to oil resistance processing, but the safety of substances used for the oil resistance processing becomes a problem.
In Patent Document 1, the ethanol concentration of 50 vol% or more aqueous ethanol solution directly, or is supported on a non-woven fabric or the ^like, the film bag having a 20g / m 2 / 24hr / 50 % / 40 ℃ more ethanol gas permeability Housed food storage tools have been proposed. As the film, a film selected from an ethylene-vinyl acetate copolymer film, a cellulose triacetate film, and a polyvinyl alcohol film is used. In the food storage device, ethanol gas diffuses through the film and comes into contact with food to exert its effect.

Japanese Patent Publication No.59-30072

In the case where a high-concentration ethanol aqueous solution as described above is stored in a film bag (hereinafter referred to as an ethanol packaging bag), it is necessary to display precautions for handling. However, the ethylene-vinyl acetate copolymer film, cellulose triacetate film, and polyvinyl alcohol film described in Patent Document 1 are not suitable for printing. Moreover, even if it prints on this film, the safety | security problem on hygiene will arise at the time of preservation | save of foodstuffs. For example, if printing is performed on the inner surface of the film, the ink may come into contact with ethanol and the ink may be dissolved, so printing cannot be performed on the inner surface. If printing is performed on the outer surface, the food and ink are in contact with each other. It is not preferable for safety.
In order to solve such a problem, it is conceivable that printing is performed on the inner surface of the film and the film is bonded to another film so that the printed layer is in the middle. However, as described above, the film is not suitable for printing. Further, when another film is bonded, the permeability of ethanol gas is lowered, and the effect of inhibiting the growth of mold may be insufficient.
The present invention has been made in view of the above circumstances, and can preserve food in a sanitary and safe manner even when printing is applied to the packaging material, and is excellent in the effect of inhibiting the growth of mold. It is an object of the present invention to provide an ethanol packaging bag and a storage method and use method suitable for the ethanol packaging bag for food preservation.

The present invention for solving the above problems has the following configuration.
[1] An ethanol packaging bag for storing food, which is filled with an aqueous ethanol solution in a bag-like packaging material and sealed;
The bag-shaped packaging material is a multilayer film comprising a stretched nylon film having a surface printed thereon, and an ethylene-vinyl acetate copolymer layer laminated on the surface of the stretched nylon film on which the printing has been performed. An ethanol packaging bag for food preservation, comprising:
[2] The ethanol packaging bag for food preservation according to [1], wherein the ethanol concentration of the aqueous ethanol solution is 20% by mass or more and less than 60% by mass.
[3] The food storage ethanol packaging bag according to [1] or [2], wherein the stretched nylon film has a thickness of 15 μm or less, and the ethylene-vinyl acetate copolymer layer has a thickness of 30 μm or less.
[4] A method for preserving the ethanol packaging bag for food preservation according to any one of [1] to [3],
A storage method comprising degassing and packaging one or a plurality of said food storage ethanol packaging bags using a packaging material having a barrier property against gaseous ethanol.
[5] The packaging material according to [4], wherein the packaging material is a bag composed of a multilayer film including a gas barrier layer made of a film on which aluminum oxide or silicon oxide is deposited, and a thermoplastic resin layer capable of thermal welding. How to save.
[6] A method of using the ethanol packaging bag for food preservation according to any one of [1] to [3],
A method of use, comprising: storing the ethanol packaging bag together with food in a sealable food storage container having a barrier property against ethanol gas; and then holding the food storage container in a sealed state.
[7] As the ethanol packaging bag, one that is stored in the food storage container and set so that the ethanol gas concentration in the head space after 24 hours from the time of sealing is 3% or more, is used. 6].
[8] The food storage container includes a bag formed of a multilayer film including a gas barrier layer made of a film on which aluminum oxide or silicon oxide is deposited, and a thermoplastic resin layer capable of heat welding, or the gas barrier layer. The method of use according to [6] or [7], wherein the container is provided with a lid made of a film.

  ADVANTAGE OF THE INVENTION According to this invention, even if the packaging material is printed, the preservation | save of food can be implemented hygienically and safely, and the food storage ethanol packaging bag excellent in the growth suppression effect of mold | fungi, and this ethanol for food preservation | save A storage method and use method suitable for the packaging bag can be provided.

The food storage ethanol packaging bag of the present invention (hereinafter abbreviated as an ethanol packaging bag) is formed by filling a bag-shaped packaging material with an aqueous ethanol solution and sealing it, and the packaging material is printed on the surface. Stretched nylon (hereinafter abbreviated as ONy) film, and an ethylene-vinyl acetate copolymer (hereinafter abbreviated as EVA) layer laminated on the surface of the ONy film on which the printing is applied. It is comprised with the multilayer film which consists of.
In the multilayer film, the EVA layer is a heat-sealable thermoplastic resin layer that becomes a sealant layer necessary for making the film into a bag shape, and other heat-sealable thermoplastic resins (for example, Compared with a film of low-density polyethylene or linear low-density polyethylene), it has higher permeability to gaseous ethanol (hereinafter referred to as ethanol gas). In addition, the ONy film can be printed, and has higher ethanol gas permeability than other printable films (for example, polyethylene terephthalate (PET) film, stretched polypropylene film). Ethanol gas permeates sufficiently as a multilayer film. For this reason, printing is performed on the ONy film, and an ethanol aqueous solution is filled in a bag composed of a multilayer film in which an EVA layer is laminated on the printed surface, so that ethanol is evaporated from the ethanol packaging bag at a high evaporation rate. Demonstrates the effect of inhibiting the growth of mold on foods stored with packaging bags. In addition, the ethanol packaging bag does not produce paper dust like paper, the ink is melted by the aqueous ethanol solution, the printing is not impaired, and the ink does not come into contact with food, causing a health and safety problem. Without any problem, food can be stored hygienically and safely with the necessary information clearly displayed.
On the other hand, in the combination other than the ONy film and the EVA layer, the effect of the present invention cannot be obtained. For example, when a PET film or a stretched polypropylene film is used in place of the ONy film, even if printing is possible, the resulting multilayer film is difficult to transmit ethanol gas, and a sufficient mold growth inhibitory effect cannot be obtained. Further, when an unstretched nylon film is used instead of the ONy film, it is not suitable for printing. In addition, when low density polyethylene or linear low density polyethylene is used instead of EVA, the resulting multilayer film is difficult to permeate ethanol gas, and a sufficient mold growth inhibitory effect cannot be obtained.

As nylon constituting the ONy film, 6-nylon is used.
As an ONy film, what was manufactured by the well-known manufacturing method may be used, and a commercially available thing may be used.
The thickness of the ONy film is preferably 25 μm or less and more preferably 15 μm or less in consideration of ethanol gas permeability. If the thickness is too thick, the transpiration rate of ethanol from the ethanol packaging bag is lowered, and there is a possibility that the effect of inhibiting the growth of mold on food is not sufficiently obtained. The lower the thickness, the better the ethanol gas permeability, so the lower limit of the thickness is not particularly limited, but 10 μm or more is preferable in consideration of the strength of the packaging material, mechanical suitability during use, and the like.
Printing on the ONy film can be performed by a known printing method such as gravure printing or flexographic printing.

As EVA which comprises an EVA layer, it is preferable that a vinyl acetate ratio is 5-40 mol%, and 10-25 mol% is preferable especially from the processability of resin.
The method for laminating the EVA layer, that is, the method for producing the multilayer film is not particularly limited, but a laminating method is preferably used. Specifically, the multilayer film can be produced by laminating (1) a method of extruding molten EVA on the printing surface of the ONy film, or (2) an EVA film on the printing surface of the ONy film. It can be carried out by a method of bonding using an adhesive. In particular, the method (1) is preferable because the resulting multilayer film is excellent in ethanol gas permeability.
The thickness of the EVA layer is preferably 60 μm or less, more preferably 30 μm or less, considering the permeability to ethanol gas. If the thickness is too thick, the transpiration rate of ethanol from the ethanol packaging bag is lowered, and there is a possibility that the effect of inhibiting the growth of mold on food is not sufficiently obtained. The lower the thickness, the higher the ethanol gas permeability, so the lower limit of the thickness is not particularly limited. However, in consideration of heat-fusibility, seal strength, etc., it is preferably 10 μm or more, more preferably 20 μm or more.

The multilayer film is preferably a two-layer film in which printing is performed on one side of the ONy film and an EVA layer is formed on the printed surface from the viewpoint of permeability to ethanol gas.
The thickness of the entire multilayer film is preferably 80 μm or less, more preferably 45 μm or less, considering the permeability to ethanol gas. If the thickness is too thick, the transpiration rate of ethanol from the ethanol packaging bag is lowered, and there is a possibility that the effect of inhibiting the growth of mold on food is not sufficiently obtained. The lower the thickness, the higher the ethanol gas permeability, so the lower limit of the thickness is not particularly limited. However, considering the strength of the packaging material, ethanol filling suitability, etc., it is preferably 20 μm or more, more preferably 30 μm or more.

The ethanol packaging bag of the present invention can be manufactured by processing the multilayer film to produce a bag-shaped packaging material having an opening, filling the packaging material with an aqueous ethanol solution from the opening, and sealing the opening. .
Since the multilayer film has an EVA layer which is a thermoplastic resin on one outermost surface, processing into a bag-shaped packaging material and sealing after filling with an aqueous ethanol solution can be easily performed by heat sealing. .

The ethanol concentration (mass%) in the ethanol aqueous solution is not particularly limited as long as the ethanol gas concentration in the head space in the food storage container (hereinafter referred to as a food package) containing food is a predetermined concentration. In order not to be subject to the application of the Fire Service Law, it is preferably less than 60% by mass. Moreover, since the filling amount of ethanol aqueous solution may be small, 20 mass% or more is preferable.
Here, “the ethanol gas concentration in the head space in the food packaging body” means the space (head space) in the food packaging body when the ethanol packaging bag is stored in a food storage container together with food to form a food packaging body. The ethanol gas concentration at When the ethanol packaging bag is stored in a food storage container together with food, ethanol evaporates from the ethanol packaging bag into the head space. At this time, the concentration at which the mold growth inhibitory effect is exerted on the food stored in the food package together with the ethanol packaging bag is the “predetermined concentration”. The mold growth inhibitory effect depends on the ethanol gas concentration in the head space in the head space.
The ethanol gas concentration (% by volume) in the head space is preferably 3% or more because it has an excellent effect of inhibiting mold growth. The upper limit of the ethanol gas concentration is not particularly limited because the amount of ethanol that can be evaporated varies depending on the temperature during use. In practice, about 10% is sufficient.
In addition, since molds have a slow growth rate, it is not necessary to reach the predetermined concentration immediately after storage in the food storage container, and it is sufficiently effective if it reaches 3% or more by 24 hours from the time of storage. Is obtained.
The ethanol transpiration rate is proportional to the surface area of the ethanol packaging bag, regardless of the ethanol concentration and filling amount of the aqueous ethanol solution, so that the size of the ethanol packaging bag can be maintained so that the head space of the food packaging body can be maintained at the prescribed ethanol gas concentration. The ethanol concentration and filling amount of the aqueous ethanol solution may be appropriately selected according to the food package.

The ethanol packaging bag begins to evaporate immediately after manufacture, that is, immediately after filling and sealing the ethanol aqueous solution into the packaging material. Conventionally, no particular attention has been paid to this, but if the ethanol concentration in the ethanol packaging bag is reduced by use due to transpiration, the expected performance may not be exhibited. Therefore, it is necessary for the ethanol packaging bag to suppress ethanol evaporation before use.
From this point of view, the ethanol packaging bag of the present invention is preferably hermetically packaged after production using a packaging material having a barrier property against ethanol gas. In particular, the hermetic packaging is preferably performed by deaeration packaging. Even if hermetically sealed using packaging material that has a barrier property against ethanol gas, if there is a space in the package, the amount of ethanol in the space will evaporate, but the space should be minimized by degassing packaging. Thus, the transpiration can be minimized.
Specifically, deaeration packaging is performed by storing one or a plurality of ethanol packaging bags in a bag having an opening made of a material having a barrier property against ethanol gas, and vacuuming the air in the bag. It is possible to carry out the process by sealing the opening of the bag by deaeration or the like.
At this time, the ethanol packaging bags may be packaged and stored one by one, but it is preferable that a plurality of ethanol packaging bags are collectively packaged from the viewpoint of efficiency of storage and work. The number of ethanol packaging bags to be integrated and packaged is not particularly limited, but is preferably about 50 to 1000.

The packaging material having a barrier property against ethanol gas is not particularly limited, and a known packaging material having a barrier property against various gases can be used.
As a preferable packaging material, a bag composed of a multilayer film including a gas barrier layer and a thermoplastic resin layer capable of heat welding can be mentioned.
Examples of the gas barrier layer include an aluminum foil, an aluminum foil laminate film, a film on which an inorganic material is deposited, and the inorganic material includes aluminum, aluminum oxide, silicon oxide, and the like. Examples of the film on which the inorganic material is deposited include a polyethylene terephthalate (PET) film and a stretched nylon film.
Among the above, the gas barrier layer is preferably a film on which aluminum oxide or silicon oxide is vapor-deposited because it has transparency and can visually confirm the state of the ethanol packaging bag during storage.
Examples of the thermoplastic resin layer that can be thermally welded include polypropylene films such as unstretched polypropylene film (CPP); polyethylene films such as low-density polyethylene film (LDPE) and linear low-density polyethylene film (LLDPE); etc. Is mentioned.

The ethanol packaging bag of the present invention is used in a food storage container together with food.
Preferred foods are breads, confectionery (Baumkuchen, muffin, etc.), Japanese confectionery (Santo, Dorayaki, Castella, etc.), delicacy, noodles (raw, half-life), etc.
As described above, the effect of the ethanol packaging bag (mold growth suppression effect) depends on the ethanol gas concentration in the head space in the food package (the food packaging container containing the ethanol packaging bag and the food). Therefore, in order to maintain the efficacy of the ethanol packaging bag with the minimum amount of ethanol, it is preferable that the evaporated ethanol does not permeate from the food packaging body to the outside.
In order to prevent the permeation of ethanol to the outside of the food packaging body, a food storage container using a sealable container having a barrier property against ethanol gas and storing the ethanol packaging bag together with the food, the food storage It is preferable to hold the container in a sealed state.
As a preferred food storage container, a bag comprising a multilayer film comprising a gas barrier layer and a thermoplastic resin layer capable of heat welding, or a container comprising a lid comprising a film comprising a gas barrier layer can be mentioned.

In the multilayer film constituting the bag used as the food storage container, examples of the gas barrier layer include an aluminum foil, an aluminum foil laminate film, a film on which an inorganic substance is deposited, and the inorganic substance includes aluminum, aluminum oxide, and silicon oxide. Etc. Examples of the film on which the inorganic material is deposited include a polyethylene terephthalate (PET) film and stretched nylon.
Among the above, the gas barrier layer is preferably a film on which aluminum oxide or silicon oxide is vapor-deposited because the state of food in the food package (such as the presence or absence of mold) can be visually confirmed from the outside.
Examples of the thermoplastic resin layer that can be thermally welded include polypropylene films such as CPP; polyethylene films such as LDPE and LLDPE; and the like.

In the film constituting the container lid used as the food storage container, the gas barrier layer may be the same as the gas barrier layer in the multilayer film.
As the film, since the container can be hermetically sealed by heat sealing, a multilayer film including a gas barrier layer and a thermoplastic resin layer capable of heat welding is preferable as in the multilayer film constituting the bag used as the food storage container. .
Examples of the container combined with the lid member made of the film include a tray and a cup. There are no particular restrictions on the material of these containers because the trays and cups are thick and difficult to pass ethanol gas out of the food storage container.

As described above, since molds have a slow growth rate, it is not necessary that the concentration of ethanol gas in the head space reaches a predetermined concentration immediately after being stored in the food storage container. If it is at least%, a sufficient effect can be obtained.
Therefore, the ethanol packaging bag of the present invention contains the ethanol packaging bag together with food in a sealable food storage container having a barrier property against ethanol gas, and the ethanol gas concentration in the head space after 24 hours from the time of sealing. Is preferably set to be 3% or more.
The setting can be made by a method of adjusting the ethanol gas permeability of the packaging material, but from the viewpoint of simplicity, a method of adjusting the surface area of the packaging material is preferable.
The “surface area” is an area in contact with the ethanol aqueous solution in the ethanol packaging bag (the area of the inner surface of the ethanol packaging bag).
The transpiration rate of ethanol from the ethanol packaging bag is influenced by the ethanol gas permeability of the packaging material, but greatly depends on the surface area of the packaging material. For example, the larger the surface area, the faster the transpiration rate of ethanol. Therefore, when the ethanol gas permeability of the packaging material and the ethanol concentration in the aqueous ethanol solution are the same, the surface area of the packaging material can be increased to increase the surface area of the packaging material from the time when the ethanol packaging bag is stored in the food storage container. The ethanol gas concentration in the head space can be increased. Further, it is possible to shorten the time from the point of storage until the ethanol gas concentration in the head space reaches a desired concentration.

Hereinafter, the present invention will be described in detail with reference to Examples and Comparative Examples. However, the present invention is not limited by the following description.
<Test Example 1>
Nine types of ethanol packaging bags (Examples 1 to 9) having different packaging material sizes (length × width), ethanol concentration of the filled ethanol aqueous solution, and filling amount were prepared by the following procedure.
EVA (Mitsui / DuPont Polychemicals, product name) 15 mm thick ONy film (Unitika, product name: Emblem ON) was subjected to white printing by gravure printing on the entire surface and melted at 210 ° C. on the printed surface. : EV450, vinyl acetate content 19 mol%) was extruded and laminated to form an EVA layer having a thickness of 30 μm to obtain a two-layer film.
Use the produced double-layer film and vertical pillow packaging machine as an ethanol packaging bag, fill it with an aqueous ethanol solution with a concentration of 20%, 40% or 58% (both mass%) and seal it with heat seal. (Seal width: 5 mm).
Table 1 shows the size of the packaging material of each ethanol packaging bag, the ethanol concentration of the aqueous ethanol solution, and the filling amount.
Moreover, the water packaging bag was produced in the same procedure as preparation of the ethanol packaging bag of Example 1 except having filled 3 g of water instead of the ethanol aqueous solution as a comparative product.

One piece of bread cut into half was cut in half and inoculated with mold generated on bread left in the room. A food storage bag (size: 150 mm × 190 mm, seal) made of a laminate film of an alumina-deposited PET film (thickness 12 μm) and a CPP film (thickness 50 μm) Width: 10 mm) and sealed to prepare a food package, which was left at room temperature (25 ° C.).
After sealing, every week for 4 weeks, the presence or absence of mold growth in the bread was visually confirmed and evaluated according to the following evaluation criteria. The results (storage results) are shown in Table 2.
[Evaluation criteria]
○: Mold does not grow.
X: Mold grew.

  Separately, only the ethanol packaging bag was put into the food storage bag without putting bread, and the package was prepared by sealing, and left at room temperature. The concentration of ethanol gas in the package 24 hours after sealing was measured using an ethanol detector tube (manufactured by Gastec). The measurement results are shown in Table 2.

From the above results, it was confirmed that ethanol gas was present in the packaging body in which the ethanol packaging bags of Examples 1 to 9 were sealed, and that ethanol was evaporated from each ethanol packaging bag.
In addition, by using Examples 1 to 9, the growth of mold in the food packaging was suppressed over 3 weeks, and in Examples 2 to 9 in which the ethanol gas concentration after 24 hours was 3% or more, 4 weeks later The mold was not proliferating.

<Test Example 2>
The ethanol packaging bag of Example 4 produced in Test Example 1 on a bag A (size: 150 mm × 190 mm, seal width: 10 mm) made of a laminate film of an alumina-deposited PET film (thickness 12 μm) and a CPP film (thickness 50 μm) 10 pieces of each were deaerated and packaged to produce an integrated package. The integrated package was stored at room temperature for 1 month. The weight of each ethanol packaging bag after storage was measured.
Separately, 10 same ethanol packaging bags were aerated in the same bag A as described above to produce an integrated package, and the same evaluation was performed.
In addition, the ethanol packaging bag of Example 4 produced in Test Example 1 on a bag B (size: 150 mm × 190 mm, seal width: 10 mm) made of a laminate film of a PET film (thickness 12 μm) and a CPP film (thickness 50 μm). 10 pieces of each were deaerated and packaged to produce an integrated package, and the same evaluation was performed.
As a result, when the bag A was deaerated and packaged, the weight reduction of the ethanol packaging bag was less than 0.05 g in all 10 ethanol packaging bags.
On the other hand, when the bag A is aerated, the ethanol packaging bag has a weight reduction of 0.1 g to 0.2 g. When the bag B is degassed, the ethanol packaging bag has a weight reduction of 0.3 g or more. It was.

As mentioned above, by filling and sealing an ethanol aqueous solution with an ethanol concentration of 20% or more and less than 60% into a bag made of multilayer film of ONy film / EVA, there is no generation of paper dust and prevention of mold in food A possible ethanol packaging bag can be obtained. In addition, the ethanol packaging bag can be printed, and does not cause sanitary or safety problems.
Further, the ethanol packaging bag is formed by using a bag made of a film having a transparent alumina vapor-deposited film or silicon oxide vapor-deposited film as a barrier layer against ethanol gas as a packaging material, and degas-packaging the ethanol packaging bag. Can be stably stored for a long period of time, and the state of the ethanol packaging bag can be visually confirmed from the outside of the packaging body.
In addition, by using a film bag with a transparent alumina vapor deposition film or silicon oxide vapor deposition film as a barrier layer against ethanol gas as a food storage container, the amount of ethanol filled in the ethanol packaging bag can be reduced, and mold growth The suppression effect can be exhibited efficiently, and the state of the food can be visually confirmed from the outside of the food package.

Claims (8)

An ethanol packaging bag for preserving food, which is filled with an aqueous ethanol solution in a bag-like packaging material and sealed,
The bag-shaped packaging material is a multilayer film comprising a stretched nylon film having a surface printed thereon, and an ethylene-vinyl acetate copolymer layer laminated on the surface of the stretched nylon film on which the printing has been performed. An ethanol packaging bag for food preservation, comprising:   The ethanol packaging bag for food preservation according to claim 1, wherein the ethanol concentration of the aqueous ethanol solution is 20 mass% or more and less than 60 mass%.   The ethanol packaging bag for food preservation according to claim 1 or 2, wherein the stretched nylon film has a thickness of 15 µm or less, and the ethylene-vinyl acetate copolymer layer has a thickness of 30 µm or less. A method for preserving the food packaging ethanol packaging bag according to any one of claims 1 to 3,
A storage method comprising degassing and packaging one or a plurality of said food storage ethanol packaging bags using a packaging material having a barrier property against gaseous ethanol.   The preservation | save method of Claim 4 whose said packaging material is a bag comprised by the multilayer film provided with the gas barrier layer which consists of a film which vapor-deposited aluminum oxide or silicon oxide, and the thermoplastic resin layer in which heat welding is possible. . A method of using the ethanol packaging bag for food preservation according to any one of claims 1 to 3,
A method of use, comprising: storing the ethanol packaging bag together with food in a sealable food storage container having a barrier property against ethanol gas; and then holding the food storage container in a sealed state.   The said ethanol packaging bag uses the thing set so that the ethanol gas density | concentration in the head space 24 hours after it stored in the said food storage container and sealed may be 3% or more. Usage as described.   The food storage container is composed of a bag composed of a multilayer film comprising a gas barrier layer made of a film on which aluminum oxide or silicon oxide is deposited and a thermoplastic resin layer capable of heat welding, or a film comprising the gas barrier layer The use method according to claim 6 or 7, which is a container provided with a lid member.