JP6150396B2 - Hydrogen gas-containing beverage container and container-packed hydrogen gas-containing beverage - Google Patents

Description

  The present invention relates to a flexible packaging material, a flexible container for a hydrogen gas-containing beverage using the same, and a container-packed hydrogen gas-containing beverage in which the container is filled with a hydrogen gas-containing beverage. Furthermore, this invention relates to the manufacturing method of a container-packed hydrogen gas containing drink, and the hydrogen gas concentration fall suppression method of a hydrogen gas containing drink.

  Accumulation of active oxygen in a living body is known to cause aging symptoms and various diseases, and there is an increasing demand for removing active oxygen. For this purpose, it is conceivable that a substance (reducing substance) that reacts with and removes active oxygen is taken into the body. In particular, since hydrogen gas has a strong reducing power, in recent years, hydrogen gas-containing beverages in which hydrogen gas is contained in drinking water have attracted attention. In addition, it has been found that hydrogen gas has an action to prevent or improve summertime, and a food or drink for summertime prevention or improvement comprising such hydrogen gas as an active ingredient has been proposed (see Patent Document 1). .

  Here, as the hydrogen gas-containing beverage, products filled in various containers such as polyethylene terephthalate (PET) bottles, aluminum (aluminum) bottles, and aluminum pouches are on the market.

JP 2010-254604 A

  However, hydrogen gas is the smallest molecule and easily penetrates various materials. For this reason, for example, a hydrogen gas-containing beverage filled in a PET bottle has a problem in that it is difficult to maintain a sufficient hydrogen gas concentration because the hydrogen gas escapes during storage and distribution. Although metal cans such as aluminum cans can prevent the permeation of hydrogen gas, there is a problem in that the weight cannot be reduced sufficiently and the container is not flexible so that it is inconvenient to handle. .

  On the other hand, in the case of a flexible container using an aluminum foil, such as an aluminum pouch or a paper pack with aluminum, a minute crack is generated in the aluminum foil due to a slight dent or breakage that occurs during the distribution process or handling before drinking. Therefore, when a flexible container using aluminum foil is filled with a hydrogen gas-containing beverage, there is a problem that hydrogen gas leaks out when a minute crack occurs.

  The present invention has been made in view of the above problems, and is a flexible packaging material that can be used for a flexible container and can suppress leakage of hydrogen gas even if a crack occurs. An object of the present invention is to provide a hydrogen gas-containing beverage flexible container formed by molding the packaging material, and a container-packed hydrogen gas-containing beverage in which the container is filled with a hydrogen gas-containing beverage.

  In order to achieve the above object, first, the present invention provides a resin base material, an inorganic layer laminated on at least one surface side of the resin base material, and between the resin base material and the inorganic layer. A flexible packaging material comprising a metal layer that does not exist, wherein the metal layer contains at least aluminum, and the inorganic layer includes silicon oxide, aluminum oxide, magnesium oxide, calcium oxide Provided is a flexible packaging material formed of one or more selected from the group consisting of silicon nitride, aluminum nitride, silicon oxynitride and aluminum oxynitride (Invention) 1).

  The flexible packaging material which concerns on the said invention (invention 1) can prevent leakage of hydrogen gas by providing a metal layer containing at least aluminum, and further, an inorganic layer formed of a predetermined inorganic material. By providing, even if a crack occurs in the metal layer, leakage of hydrogen gas can be prevented.

  In the said invention (invention 1), it is preferable that the said inorganic substance layer is a vapor deposition layer formed in the at least one surface side of the said resin base material (invention 2).

  In the said invention (invention 1 or 2), it is preferable that the thickness of the said metal layer is 5-14 micrometers (invention 3).

  The flexible packaging material according to the above inventions (Inventions 1 to 3) preferably further comprises a paper substrate (Invention 4).

  2ndly this invention provides the flexible container for hydrogen gas containing drinks shape | molded using the flexible packaging material which concerns on the said invention (invention 1-4) (invention 5).

  3rd invention provides the hydrogen gas containing drink pouch shape | molded using the flexible packaging material which concerns on the said invention (invention 1-3) (invention 6).

  4thly this invention provides the hydrogen gas containing drink paper pack shape | molded using the flexible packaging material which concerns on the said invention (invention 4) (invention 7).

  According to the said invention (invention 5-7), since it shape | molds using the flexible packaging material mentioned above, the leakage of hydrogen gas can be suppressed and the hydrogen gas containing drink was filled into the container obtained. Sometimes the hydrogen gas concentration can be maintained at a high value.

  Fifthly, the present invention provides a hydrogen gas-containing beverage flexible container according to the above invention (Invention 5), a hydrogen gas-containing beverage pouch according to the above invention (Invention 6), or a hydrogen according to the above invention (Invention 7). A container-packed hydrogen gas-containing beverage is provided in which a gas-containing beverage paper pack is filled with a beverage containing hydrogen gas (Invention 8).

  Sixth, the present invention provides a flexible container for a hydrogen gas-containing beverage according to the above invention (Invention 5), a hydrogen gas-containing beverage pouch according to the above invention (Invention 6), or a hydrogen according to the above invention (Invention 7). Provided is a method for producing a container-packed hydrogen gas-containing beverage, wherein the gas-containing beverage paper pack is filled with a beverage containing hydrogen gas (Invention 9).

  Seventh, the present invention provides a flexible container for a hydrogen gas-containing beverage according to the above invention (Invention 5), a hydrogen gas-containing beverage pouch according to the above invention (Invention 6), or a hydrogen according to the above invention (Invention 7). Provided is a method for suppressing a decrease in the hydrogen gas concentration of a hydrogen gas-containing beverage, wherein the gas-containing beverage paper pack is filled with a beverage containing hydrogen gas (Invention 10).

  The flexible packaging material of the present invention can be used for a flexible container, and can suppress leakage of hydrogen gas even if a crack occurs. In addition, even if a container-packed hydrogen gas-containing beverage filled in a flexible container for a hydrogen gas-containing beverage formed using the flexible packaging material is cracked due to a dent or breakage of the container, Gas leakage is suppressed.

It is sectional drawing of the flexible packaging material which concerns on one Embodiment of this invention. It is sectional drawing of the flexible packaging material which concerns on other embodiment of this invention. It is a figure explaining the formation method of the crack in a test example.

Hereinafter, embodiments of the present invention will be described.
[Flexible packaging materials]
1. First Embodiment As shown in FIG. 1, a flexible packaging material 1 according to this embodiment includes a metal layer 11, a resin base 12, and one surface side of the resin base 12 (the upper side in FIG. 1). And an inorganic material layer 13 laminated on each other. Moreover, in this embodiment, the paper base material 14 and the printing layer 15 laminated | stacked on one side (upper side in FIG. 1) of the paper base material 14 are further laminated | stacked, and also the metal layer 11 and the inorganic substance layer 13, between the metal layer 11 and the paper base material 14, between the paper base material 14 and the print layer 15, and on the opposite side of the print layer 15 from the paper base material 14 (upper side in FIG. 1). Are respectively laminated with resin layers 16A, 16B, 16C and 16D. In addition, when a container is shape | molded using the flexible packaging material 1 shown in FIG. 1, the surface by the side of the resin layer 16D (upper side in FIG. 1) in the flexible packaging material 1 is outside the container, and the resin base material 12 The side (lower side in FIG. 1) is the inside of the container.

  In the present embodiment, the metal layer 11 contains at least aluminum. By providing the metal layer 11, the flexible packaging material 1 according to the present embodiment can prevent hydrogen gas from leaking out when it is used as a hydrogen gas-containing beverage container.

  Furthermore, the inorganic layer 13 is selected from the group consisting of silicon oxide, aluminum oxide, magnesium oxide, calcium oxide, silicon nitride, aluminum nitride, silicon oxynitride and aluminum oxynitride or It is formed of two or more types and is different from the metal layer 11. The flexible packaging material 1 provided with the inorganic layer 13 can prevent hydrogen gas from leaking even when the metal layer 11 is cracked when used in applications requiring flexibility.

(1) Metal Layer The metal layer 11 in the present embodiment is a layer that prevents permeation of hydrogen gas, and contains at least aluminum (Al). In addition, in this specification, the metal which comprises the metal layer 11 shall contain aluminum alloy (for example, aluminum alloy prescribed | regulated to JISH4160) other than aluminum.

  When the metal layer 11 is composed of an aluminum alloy, the components contained in addition to aluminum include metals such as iron, copper, manganese, nickel, zinc, and titanium; and nonmetals such as silicon. It can be used alone or in combination of two or more. When the metal layer 11 contains the above-described components other than aluminum, the rigidity can be lowered while maintaining the lightness and formability, and the steel is excellent in spreadability, impact resistance, bending resistance, etc. It is preferable to contain.

  The aluminum content in the metal layer 11 is preferably 98% by mass or more, particularly preferably 99% by mass or more, and more preferably 99.9% by mass or more. The metal layer 11 containing aluminum within such a range has sufficient flexibility and can more effectively prevent hydrogen gas from leaking out. Here, when the content of aluminum is 100% by mass, that is, when the metal layer 11 is composed only of aluminum, it is one of particularly preferred embodiments.

  The thickness of the metal layer 11 is preferably 5 to 14 μm, particularly preferably 5 to 12 μm, and more preferably 6 to 9 μm. When the thickness of the metal layer 11 is 5 μm or more, cracks and pinholes are hardly formed in the metal layer 11, and hydrogen gas leakage can be better blocked. On the other hand, when the thickness is 14 μm or less, the flexibility of the flexible packaging material 1 is sufficient, and the weight is light, so that the handling of the flexible packaging material 1 is more excellent. .

(2) Resin base material The resin base material 12 will not be specifically limited if it has flexibility. Examples of the resin substrate 12 include polyesters such as polyethylene terephthalate (PET) and polyethylene naphthalate, polyolefins such as polyethylene and polypropylene, polyamides such as polystyrene and nylon, polyvinyl chloride, polycarbonate, polyacrylonitrile, and polyimide. A resin film made of a resin is preferable, and a film made of a single layer may be used, or a film in which multiple layers of the same kind or different kinds are laminated. Either stretched or unstretched may be used, but those having mechanical strength and dimensional stability are preferred. Among these, polyethylene terephthalate or nylon arbitrarily stretched in the biaxial direction is particularly preferable.

  In order to improve the adhesion with the inorganic layer 13 on the surface of the resin base material 12 on which the inorganic layer 13 is laminated, low-temperature plasma treatment, corona discharge treatment, atmospheric pressure plasma discharge treatment, reactive ion etching treatment, etc. A surface treatment may be applied, or an anchor coat layer or the like made of a thermoplastic resin may be provided.

  The thickness of the resin base material 12 is not particularly limited, but considering flexibility and cost, it is preferably 1 to 200 μm, particularly preferably 5 to 100 μm, and more preferably 5 to 30 μm. Is preferred.

(3) Inorganic material layer In addition to the metal layer 11 mentioned above, the flexible packaging material 1 which concerns on this embodiment is equipped with the inorganic material layer 13 different from the metal layer 11, Therefore A crack is contained in the flexible packaging material 1. Even if it occurs, leakage of hydrogen gas can be effectively prevented. This is considered to be due to the vapor deposition in a layer structure from the component structure, which is excellent in physical shock resistance, can be expected to recover depending on the degree, and has a hydrogen retention function. However, the hydrogen gas leakage prevention effect of the inorganic layer 13 after crack formation is not limited to these reasons.

  Conventionally, metals such as aluminum and inorganic materials such as silicon oxide (silica) and aluminum oxide (alumina) have been used as materials having gas barrier properties against oxygen, water vapor, and the like. However, since metals such as aluminum have light-shielding properties, inorganic materials have contrasting properties such as transparency, they are used for different purposes and are not used in combination. Also, in applications requiring hydrogen gas barrier properties, which is the object of this embodiment, a flexible gas barrier film having a metal layer such as aluminum is used, which has excellent hydrogen barrier properties but is resistant to cracks. There was a problem. On the other hand, since the flexible gas barrier film which has an inorganic substance layer is inferior to hydrogen barrier property, it was not used for this use. However, in the flexible packaging material 1 according to the present embodiment, the metal layer 11 and the inorganic layer 13 are used in combination, and even if a crack occurs in the metal layer 11, it still has excellent hydrogen gas barrier properties. It becomes.

  The inorganic substance contained in the inorganic layer 13 is one or two selected from silicon oxide, aluminum oxide, magnesium oxide, calcium oxide, silicon nitride, aluminum nitride, silicon oxynitride, and aluminum oxynitride More than a seed. Among these, silicon oxide, aluminum oxide, magnesium oxide, and calcium oxide are preferable from the viewpoint of hydrogen gas leakage prevention effect when combined with the metal layer 11 and production cost, and silicon oxide and aluminum oxide. Is particularly preferred.

  The thickness of the inorganic layer 13 is preferably 5 to 300 nm, particularly preferably 10 to 100 nm, and more preferably 10 to 30 nm.

(4) Other layers The paper base material 14 is provided when forming a paper pack using the flexible packaging material 1 according to the present embodiment. The paper base material 14 can be used without particular limitation as long as it is a base paper generally used for a paper pack, such as pulp, natural paper, synthetic paper, pure white roll paper, kraft paper, paperboard, and processed paper. .

The basis weight of the paper substrate 14 is not particularly limited, but is preferably 170 to 500 g / m ² , particularly 200 to 350 g / m ² from the viewpoint of flexibility and strength. preferable.

  In FIG. 1, the print layer 15 is provided by printing the resin layer 16 </ b> C laminated on the paper base material 14. However, the present embodiment is not limited to this, and for example, directly on the paper base material 14 or the like. The printing layer 15 may be formed by printing.

  The resin layer 16 is a layer that coats a desired layer or bears adhesion between layers. In this embodiment, the resin layer 16A in FIG. 1 coats the inorganic layer 13, the resin layer 16B and the resin layer 16C coat the paper base material 14, and the resin layers 16A to 16C have adhesion between the layers. Bear. On the other hand, the resin layer 16 </ b> D in FIG. 1 coats the printing layer 15 as the outermost layer of the flexible packaging material 1.

  The constituent material of the resin layers 16A to 16C is not particularly limited as long as it is a material that has adhesiveness to an adherend and is generally used for a beverage container, but a thermoplastic resin is used from the viewpoint of ease of handling. Preferably, for example, polyolefins such as polyethylene, linear low density polyethylene, polypropylene; ethylene- (meth) acrylic acid copolymer, ethylene- (meth) acrylic acid ester copolymer, ethylene-vinyl acetate copolymer, Examples thereof include an ethylene-α olefin copolymer polymerized using a single site catalyst. These may be used alone or in combination of two or more, and the resin layers 16A to 16C may be the same composition or different compositions.

  Examples of the resin layer 16D include a top coat layer such as a contamination prevention coat, a weather resistance coat, a coat for adjusting the surface roughness and the specular gloss, and the like. As a constituent material of the resin layer 16D, for example, polyurethane; acrylic polymer; polyvinyl chloride; polyolefin such as polyethylene or polypropylene; thermoplastic elastomer such as olefin or polyester; resin such as ionomer is preferably used. Among them, it is preferable to use polyolefin, particularly polyethylene. Those resins may contain various additives such as pigments, inorganic fillers, organic fillers, and ultraviolet absorbers.

  In addition, the flexible packaging material 1 is a layer other than those described above, for example, a functional layer having a function of preventing oxidation of a hydrogen gas-containing beverage, and the flexible packaging material 1 are thermally bonded (heat seal). ) May be provided as long as the effects of the present embodiment are not impaired.

2. Second Embodiment In the first embodiment, the case where the resin base material, the inorganic layer, the metal layer, and the paper base material are laminated in this order has been described as an example, but the present invention is not limited to this case. For example, as shown in FIG. 2, in the flexible packaging material 2, the metal layer 21, the resin base material 22, and the inorganic material layer 23 are laminated in this order, and is opposite to the resin base material 23 in the inorganic material layer 23. A resin layer 26 is provided on the surface side (upper side in FIG. 2), and a sealant layer 28 is provided on the side of the metal layer 21 opposite to the resin base material 22 (lower side in FIG. 2). Moreover, in this embodiment, the paper base material is not laminated | stacked.

  As the metal layer 21, the resin base material 22, and the inorganic layer 23 in the present embodiment, those similar to the metal layer 11, the resin base material 12, and the inorganic layer 13 described in the first embodiment may be used. it can. In addition, when not providing a resin layer between the metal layer 11 and the resin base material 12, it is preferable that the resin base material 12 has adhesiveness (for example, heat adhesiveness) also in the resin film mentioned above.

3. In the following, a method for manufacturing the flexible packaging material 1 according to the first embodiment will be described as an example. However, the flexible packaging material 1 according to the second embodiment is appropriately used as well. Application is possible.

  In order to manufacture the flexible packaging material 1, first, a laminate of the resin base material 12 and the inorganic layer 13 is manufactured in order to manufacture the flexible packaging material. Such a laminate can be obtained by forming the inorganic layer 13 on one surface of the resin film constituting the resin substrate 12.

  What is necessary is just to select suitably the method of forming the inorganic substance layer 13 in one surface of a resin film according to the material to be used. For example, the material of the inorganic layer may be a vacuum deposition method such as a resistance heating vapor deposition method, a high frequency induction heating vapor deposition method, or an electron beam physical vapor deposition method; a chemical vapor deposition method such as a thermal chemical vapor deposition method, a plasma chemical vapor deposition method, or a photochemical vapor deposition method; Examples thereof include a method of forming on at least one surface of the resin substrate 12 by a sputtering method, an ion plating method, or the like. Moreover, the method of apply | coating to the at least one surface of the resin base material 12 the solution which melt | dissolved the material of the inorganic layer 13 in the organic solvent may be sufficient.

  Here, when the inorganic layer 13 is formed of silicon oxide and does not contain aluminum oxide, it is preferably formed by vacuum deposition. Further, when the inorganic layer 13 is formed of aluminum oxide and does not contain silicon oxide, it is preferably formed by a thermal chemical vapor deposition method or a plasma chemical vapor deposition method. Further, when the inorganic layer 13 is formed of silicon oxide and aluminum oxide, it is preferably formed by electron beam physical vapor deposition.

  The resin layer 16A is laminated on the surface of the inorganic layer 13 obtained in this way on the surface opposite to the resin base 12 (upper side in FIG. 1). The resin layer 16A may be formed by a conventional method, for example, extrusion lamination, dry lamination, or the like.

  In this embodiment, an inorganic substance is vapor-deposited on at least one surface of the resin base material 12 to form the inorganic substance layer 13, and a laminated body in which the resin layer 16 </ b> A is laminated on the inorganic substance layer 13 is commercially available. A film may be used. For example, “GL series” “GX series” (manufactured by Toppan Printing Co., Ltd.), “IB series” (manufactured by Dainippon Printing Co., Ltd.), “Barrier Rocks” (Toray Film Processing Co., Ltd.) For example, “Tech Barrier” (manufactured by Mitsubishi Plastics), “TL Series”, “Max Barrier Series” (manufactured by Mitsui Chemicals Tosero Co., Ltd.), “Ecosial” (manufactured by Toyobo Co., Ltd.), and the like. In such a commercially available vapor-deposited film, there are those in which a resin layer having thermal adhesiveness is provided in advance as a coat layer of the inorganic layer 13 (corresponding to the resin layer 16A in the present embodiment).

  On the obtained laminate including the resin base material 12, the inorganic material layer 13 and the resin layer 16A, a metal foil constituting the metal layer 11 and a laminate obtained by sandwiching the paper base material 14 with the resin layers 16B and 16C. Are stacked in order. A flexible packaging material according to the present embodiment is formed by printing the surface of the obtained laminate on the side of the resin layer 16C to form the printing layer 15 and coating the printing layer 15 with the resin layer 16D. 1 can be obtained.

  On the other hand, to manufacture the flexible packaging material 2 according to the second embodiment, after obtaining a laminate including the resin base material 22, the inorganic material layer 23, and the resin layer 26 in the same manner as described above, What is necessary is just to laminate | stack the laminated body, the metal foil which comprises the metal layer 21, and the sealant layer 28 comprised by a thermoplastic resin in order.

  The flexible packaging materials 1 and 2 according to the present embodiment described above can suppress the leakage of hydrogen gas even if a minute crack occurs in the metal layer 11. For this reason, the flexible packaging material 1 can maintain the hydrogen gas concentration in the hydrogen gas-containing beverage at a high value when used in, for example, a container for flexible hydrogen gas-containing beverages.

[Hydrogen gas-containing beverage container, hydrogen gas-containing beverage paper pack, hydrogen gas-containing beverage pouch]
The hydrogen gas-containing beverage container according to this embodiment is formed using the flexible packaging material described above. For example, when the flexible packaging material 1 described above is used, a hydrogen gas-containing beverage paper pack is obtained, and when the flexible packaging material 2 described above is used, a hydrogen gas-containing beverage pouch is obtained.

  The shape of the hydrogen gas-containing beverage paper pack may be appropriately determined according to the application and purpose. For example, brick type (brick type), gable top type (roof type), flat type, cylindrical type, triangular pyramid type, etc. Is mentioned. Note that a cap, a pull tab opening mechanism, and the like may be appropriately provided at the spout of the hydrogen gas-containing beverage paper pack.

  On the other hand, the shape of the hydrogen gas-containing beverage pouch may be determined as appropriate according to the application and purpose, and may be either a standing pouch or a non-standing pouch. The packaging form is not particularly limited, and various types such as a side gusset bag and a flat bag can be used in addition to a normal gusset bag. Furthermore, the spout of the hydrogen gas-containing beverage pouch may be provided with an opening mechanism such as a spout, or may be provided with a notch for opening.

  In addition, when providing opening mechanisms, such as a cap and a spout, at the spout of a hydrogen gas-containing beverage container (including paper packs and pouches), leakage of hydrogen gas is suppressed as a material constituting these opening mechanisms. A material is preferable, and a metal such as aluminum is particularly preferable.

  The hydrogen gas-containing beverage container according to this embodiment can be produced as follows. For example, when manufacturing a hydrogen gas-containing beverage paper pack, the flexible packaging material 1 described above is first cut into a predetermined shape. Next, the hydrogen gas-containing beverage paper pack formed into a predetermined shape is formed by bending along a predetermined folding line and bonding the overlapping portion of the ends formed by heat sealing with an appropriate adhesive or sealant layer. Can be obtained.

  On the other hand, in order to manufacture the hydrogen gas-containing beverage pouch according to this embodiment, the flexible packaging material 2 described above is first cut into a predetermined shape. Next, if desired, the bottom film (preferably composed of the flexible packaging material 2) is folded and an opening mechanism such as a spout is placed, and then the heat sealability of the sealant layer 28 is utilized to form a bag. By heat-sealing the ends so as to form a bag using an appropriate adhesive, a hydrogen gas-containing beverage pouch molded into a predetermined shape can be obtained.

  In addition, the process of filling the hydrogen gas-containing beverage described later may be included in the manufacturing process of the hydrogen gas-containing beverage container.

  Since the hydrogen gas-containing beverage container, the hydrogen gas-containing beverage paper pack and the hydrogen gas-containing beverage pouch obtained in this way are molded using the flexible packaging material described above, for example, a container manufacturing process, In particular, leakage of hydrogen gas can be suppressed even if a minute crack occurs in the metal layer during bending in the forming process. Therefore, the hydrogen gas concentration can be maintained at a high value when the resulting container is filled with the hydrogen gas-containing beverage.

[Contained hydrogen gas-containing beverage]
The container-packed hydrogen gas-containing beverage according to the present embodiment is a hydrogen gas-containing beverage container, a hydrogen gas-containing beverage paper pack, or a pouch with a spout for hydrogen gas-containing beverages (hereinafter referred to as a “hydrogen gas-containing beverage container”). .) Is filled with a hydrogen gas-containing beverage.

  As beverages to which this embodiment can be applied, in addition to drinking water, tea beverages such as green tea beverages and tea beverages, vegetable beverages, fruit juice beverages, coffee beverages, carbonated beverages, functional beverages, vinegar-containing beverages, sports drinks, Examples include near water and lactic acid bacteria beverages. The drinking water is not particularly limited as long as it is suitable for drinking, and examples thereof include pure water, hard water, soft water, ion-exchanged water and the like, and deaerated water obtained by deaeration of these waters.

  The hydrogen gas-containing beverage used in the present embodiment preferably has a hydrogen gas concentration of 0.1 to 7 ppm, particularly preferably 0.3 to 5 ppm. When the hydrogen gas concentration is 0.1 ppm or more, the hydrogen gas-containing beverage has sufficient reducing power, and a summer prevention effect can be expected. On the other hand, when the concentration of hydrogen gas is 7 ppm or less, the hydrogen gas can be sufficiently retained in the beverage because it does not greatly deviate from the saturated concentration of hydrogen gas in water.

  A hydrogen gas-containing beverage can be produced by containing hydrogen gas in the beverage as a raw material. The method of adding hydrogen includes pressurization of hydrogen, addition of liquid hydrogen, addition of fine hydrogen bubbles and hydrogen storage metal to the beverage as a raw material, direct dissolution of alkali metal, electrolysis of water, etc. The method of using can be used.

  By filling the hydrogen gas-containing beverage obtained in this manner into the hydrogen gas-containing beverage container or the like, the container-packed hydrogen gas-containing beverage according to this embodiment can be produced. Even if the container-packed hydrogen gas-containing beverage obtained is cracked in the container due to dents or breaks that occur during the distribution / sales process or handling before drinking, leakage of hydrogen gas can be suppressed. Thereby, the hydrogen gas containing beverage in a container can maintain the hydrogen gas concentration within the expiration date at a high value, and can also extend the expiration date. Furthermore, since the container-packed hydrogen gas-containing beverage is filled in a flexible container, handling in the distribution / sales process becomes easy.

  The embodiment described above is described for facilitating understanding of the present invention, and is not described for limiting the present invention. Therefore, each element disclosed in the above embodiment is intended to include all design changes and equivalents belonging to the technical scope of the present invention.

  For example, the order of lamination in the flexible packaging material may be such that the metal layer does not exist between the resin substrate and the inorganic layer. That is, in the first embodiment, the order of resin base material 12 / inorganic layer 13 / metal layer 11 / paper base material 14 is described except for the print layer and the resin layer. The layers may be laminated in the order of layer / paper substrate or metal layer / paper substrate / resin substrate / inorganic layer.

  EXAMPLES Hereinafter, although this invention is demonstrated further in detail by showing an Example etc., this invention is not limited to these Examples etc. at all.

[Example 1]
An aluminum film (made by Hosokawa Yoko Co., Ltd.) having an aluminum layer as a metal layer and having the following layer structure was cut into 14.7 cm × 13 cm.
= Layer structure of aluminum film =
The number in parentheses represents the thickness.
PET (12 μm) / polyethylene (15 μm) / aluminum (7 μm) / polyethylene (15 μm) / linear low density polyethylene (LLDPE) (30 μm)

  About the cut | disconnected aluminum film, as shown in FIG. 3, the crack formation process was performed. That is, two cylindrical rods having a diameter of about 1.5 cm were bent so that the tips of the respective rods were positioned 5 cm from the end of the film and the two rods were wound (in FIG. 3). (1)). Next, a series of operations of moving the two bars toward the center of the film while being fixed to the film by hand (same (2)) and then returning to the original (same (3)) is performed 100 times in 50 seconds. Repeated. Thereafter, the two rods were wound in a direction substantially orthogonal to the direction of the first two rods ((4)), and a series of operations were performed in the same manner ((5)) to form a crack in the film. (Id. (6)).

On the other hand, a silica vapor-deposited film comprising a polyethylene terephthalate (PET) layer as a resin base layer and a silicon oxide vapor-deposited layer as an inorganic layer and having the following layer structure (product name “GL film” manufactured by Toppan Printing Co., Ltd.) Was cut into 12.5 cm × 10.4 cm.
= Layer structure of silica-deposited film =
The number in parentheses represents the thickness.
GL-RD12 (12 μm) (manufactured by Toppan Printing Co., Ltd., with PET layer and silicon oxide vapor deposition layer) / stretched nylon (ONY) (15 μm) / unstretched polypropylene (CPP) (50 μm)

  The aluminum film on which cracks are formed and the cut silica deposited film are laminated so that the LLDPE layer of the aluminum film and the CPP layer of the silica deposited film are in contact with each other, and heat-sealed, so that the crack formation treatment is performed on the aluminum film. The resulting flexible packaging material was obtained. Two sheets of the resulting flexible packaging material were used, and the two sheets were stacked with the silica vapor deposition film side facing inward, and heat sealed on three sides to form a bag, thereby obtaining a hydrogen gas-containing beverage container.

  Commercial mineral water was supplied to a tabletop hydrogen water generator (Ecomo International, product name “Aquela blue MEH-1500”) to obtain hydrogen water. After measuring the hydrogen gas concentration contained in the obtained hydrogen water with a dissolved hydrogen concentration meter (product name “DH-35A” manufactured by Toa DKK Corporation), and adjusting the hydrogen gas concentration to 1.30 ppm based on the result , 200 mL of the hydrogen gas-containing beverage container was filled, and the container-packed hydrogen gas-containing beverage was manufactured by heat-sealing and sealing so that there was no head space.

  The container-packed hydrogen gas-containing beverage (sample) obtained was stored at 25 ° C. for 1 week, and then the hydrogen gas concentration contained in the hydrogen gas-containing beverage was measured using a dissolved hydrogen concentration meter (product name “DH-35A” manufactured by Toa DKK Corporation). ). The results are shown in Table 1.

[Example 2]
A container-packed hydrogen gas-containing beverage was prepared in the same manner as in Example 1, except that an alumina vapor-deposited film (manufactured by Toppan Printing Co., Ltd., product name “GX film”) having the following layer configuration was used instead of the silica vapor-deposited film. The hydrogen gas concentration after production and storage at 25 ° C. for 1 week was measured. The results are shown in Table 1.
= Layer structure of evaporated alumina film =
The number in parentheses represents the thickness.
GX-P-F12 (12 μm) (manufactured by Toppan Printing, with PET layer and aluminum oxide vapor deposition layer) / ONY (15 μm) / CPP (50 μm)

[Comparative Example 1]
Instead of the silica vapor deposition film, an aluminum vapor deposition film (manufactured by Toray Industries, Inc.) having the following layer structure is used so that the LLDPE layer of the cracked aluminum film and the linear low density polyethylene (LLDPE) layer of the aluminum vapor deposition film are in contact with each other. The container-packed hydrogen gas-containing beverage was produced in the same manner as in Example 1 except that the hydrogen gas concentration was measured after storage at 25 ° C. for 1 week. The results are shown in Table 1.
= Layer structure of evaporated aluminum film =
The number in parentheses represents the thickness.
VM-PET (12 μm) (manufactured by Toray Industries Inc., with PET layer and aluminum vapor deposition layer) / dry laminate (DL) / LLDPE (80 μm)

[Comparative Examples 2 to 5, Reference Example]
The deposited film or aluminum film shown in Table 1 was cut into 14.7 cm × 13 cm and used as a packaging material. Two packaging materials were overlapped so that the CPP layer (or LLDPE layer) was inside, and the three sides were heat-sealed to obtain a hydrogen gas-containing beverage container. Except these, it carried out similarly to Example 1, filled with hydrogen water which adjusted hydrogen gas concentration to 1.30 ppm, sealed so that there was no head space, and measured the hydrogen gas concentration after 1 week preservation | save at 25 degreeC. The results are shown in Table 1.

  As shown in Table 1, in the container-filled hydrogen gas-containing beverage obtained in the examples, leakage of hydrogen gas is suppressed even when cracks are formed in the aluminum film (in the aluminum layer), and cracks are formed. The residual ratio of hydrogen gas was similar to that of the reference example that was not used. On the other hand, in the container-packed hydrogen gas-containing beverages of Comparative Examples 1 and 2 that did not include the inorganic layer and Comparative Examples 3 to 5 that did not include the metal layer, leakage of hydrogen gas could not be sufficiently suppressed.

Example 3
Aluminum film cut to 14.7 cm x 13 cm (made by Hosokawa Yoko Co., Ltd., layer structure is described above) and silica deposited film cut to 12.5 cm x 10.4 cm (made by Toppan Printing Co., Ltd., product name "GL film", layer) Were laminated so that the LLDPE layer of the aluminum film and the CPP layer of the silica-deposited film were in contact with each other, and heat-sealed to obtain a flexible packaging material. Two sheets of the obtained flexible packaging material were used, the two sheets were superposed with the silica vapor deposition film side facing inward, and three sides were heat-sealed to form a bag. About the obtained bag making goods, as shown in FIG. 3, the crack formation process was performed and the container for hydrogen gas containing drinks by which the crack was formed was obtained.

  The obtained hydrogen gas-containing beverage container (crack-treated) was filled with 200 mL of hydrogen water adjusted to a hydrogen gas concentration of 1.30 ppm in the same manner as in Example 1 and heat-sealed so that there was no head space. The container-packed hydrogen gas-containing beverage was produced. The container-packed hydrogen gas-containing beverage (sample) obtained was stored at 25 ° C. for 1 week, and then the hydrogen gas concentration contained in the hydrogen gas-containing beverage was measured using a dissolved hydrogen concentration meter (product name “DH-35A” manufactured by Toa DKK Corporation). ). The results are shown in Table 2.

[Example 4, Comparative Examples 6-7]
Instead of silica vapor deposited film, alumina vapor deposited film (manufactured by Toppan Printing Co., Ltd., product name “GL film”, layer configuration is described above), aluminum vapor deposited film (manufactured by Toray Industries, Inc., layer configuration is described above), or aluminum film (Hosokawa Yoko) The flexible packaging material was manufactured in the same manner as in Example 3 except that the product was cut to 12.5 cm × 10.4 cm and laminated with an aluminum film cut to 14.7 cm × 13 cm. . After obtaining a hydrogen gas-containing beverage container cracked using such a flexible packaging material, it was filled with 200 mL of hydrogen water adjusted to a hydrogen gas concentration of 1.30 ppm, and sealed so that there was no head space, The hydrogen gas concentration after storage at 25 ° C. for 1 week was measured. The results are shown in Table 2.

Example 5
A silica / alumina mixed vapor deposition film (manufactured by Toyobo Co., Ltd.) having the following layer structure was cut into 14.7 cm × 13 cm.
= Layer structure of silica-alumina mixed vapor deposition film =
The number in parentheses represents the thickness.
Ecosial VN507 (15 μm) (manufactured by Toyobo Co., Ltd., with ONY layer and silica / alumina mixed vapor deposition layer) / dry laminate (DL) / LLDPE (40 μm)

  Cut aluminum film (made by Hosokawa Yoko Co., Ltd., layer structure mentioned above) into 12.7cm x 11.0cm, laminate the LLDPE layer of silica / alumina mixed vapor deposition film and LLDPE layer of aluminum film, and heat The flexible packaging material was obtained by sealing. Two sheets of the obtained flexible packaging material were used, the two sheets were overlapped so that the aluminum film side was inside, and three sides were heat-sealed to form a bag. The obtained bag product was subjected to crack formation treatment in the same manner as in Example 3, filled with 200 mL of hydrogen water adjusted to a hydrogen gas concentration of 1.30 ppm, sealed so that there was no head space, and 25 ° C. The hydrogen gas concentration after storage for 1 week was measured. The results are shown in Table 2.

Example 6
A flexible packaging material was produced in the same manner as in Example 3 except that an aluminum alloy film (made by Hosokawa Yoko Co., Ltd.) having the following configuration was used instead of the aluminum film. After obtaining a hydrogen gas-containing beverage container cracked using such a flexible packaging material, it was filled with 200 mL of hydrogen water adjusted to a hydrogen gas concentration of 1.30 ppm, and sealed so that there was no head space, The hydrogen gas concentration after storage at 25 ° C. for 1 week was measured. The results are shown in Table 2.
= Layer structure of aluminum alloy film =
The number in parentheses represents the thickness.
PET (12 μm) / Dry laminate / Aluminum alloy (7 μm) / Dry laminate / LLDPE (60 μm)

[Comparative Example 8]
A crack was formed in the same manner as in Example 3 except that the bag was made using only an aluminum film (made by Hosokawa Yoko Co., Ltd., layer configuration described above) cut to 14.7 cm × 13 cm without using a silica vapor deposition film. After obtaining a hydrogen gas-containing beverage container, it was filled with 200 mL of hydrogen water adjusted to a hydrogen gas concentration of 1.30 ppm, sealed so that there was no headspace, and the hydrogen gas concentration after storage at 25 ° C. for 1 week was measured. . The results are shown in Table 2.

[Comparative Example 9]
Cracks were formed in the same manner as in Example 3 except that the bag was made using only an aluminum alloy film cut by 14.7 cm × 13 cm (made by Hosokawa Yoko Co., Ltd., layer configuration described above) without using a silica deposited film. After obtaining a hydrogen gas-containing beverage container, it was filled with 200 mL of hydrogen water adjusted to a hydrogen gas concentration of 1.30 ppm, sealed so that there was no head space, and measured for hydrogen gas concentration after storage at 25 ° C. for 1 week. did. The results are shown in Table 2.

  As shown in Table 2, leakage of hydrogen gas was well prevented even when the container-packed hydrogen gas-containing beverage obtained in the examples was cracked after bag making. On the other hand, Comparative Example 5 using an aluminum vapor deposition layer instead of the inorganic layer, Comparative Example 7 making a bag using a laminate of two aluminum films, Comparative Example 8 making a bag using only one aluminum film, and an aluminum alloy In Comparative Example 9 in which the bag was formed with only one film, the hydrogen gas leakage preventing effect was not sufficient.

  The flexible packaging material, the hydrogen gas-containing beverage container, the hydrogen gas-containing beverage paper pack, and the hydrogen gas-containing beverage pouch according to the present invention are suitably used as a packaging material or a container for a hydrogen gas-containing beverage. The container-packed hydrogen gas-containing beverage according to the present invention is suitable as a hydrogen gas-containing beverage that prevents leakage of hydrogen gas and is easy to handle during distribution / sales processes and drinking.

DESCRIPTION OF SYMBOLS 1,2 ... Packaging material 11,21 ... Metal layer 12,22 ... Resin base material 13,23 ... Inorganic substance layer 14 ... Paper base material

Claims (7)

And the resin base material, wherein the inorganic layer laminated on at least one surface side of the resin substrate, the resin substrate and flexible packaging material and a metal layer which is not present between the inorganic layer (the A hydrogen gas-containing beverage container formed using a polyamide layer and / or a polypropylene layer excluding one including a polypropylene layer between the inorganic layer and the metal layer ,
The metal layer contains at least aluminum;
The inorganic layer is one or two selected from the group consisting of silicon oxide, aluminum oxide, magnesium oxide, calcium oxide, silicon nitride, aluminum nitride, silicon oxynitride, and aluminum oxynitride A hydrogen gas-containing beverage container formed as described above. The said inorganic substance layer is a vapor deposition layer formed in the at least one surface side of the said resin base material, The container for hydrogen gas containing drinks of Claim 1 characterized by the above-mentioned. The hydrogen gas-containing beverage container according to claim 1 or 2, wherein the metal layer has a thickness of 5 to 14 µm. It is a hydrogen gas-containing beverage pouch, The hydrogen gas-containing beverage container according to any one of claims 1 to 3. A container-packed hydrogen gas-containing beverage, wherein the hydrogen gas-containing beverage container according to any one of claims 1 to 4 is filled with a beverage containing hydrogen gas. A hydrogen gas-containing beverage container according to any one of claims 1 to 4 , which is filled with a beverage containing hydrogen gas. The hydrogen gas-containing beverage container according to any one of claims 1 to 4 , wherein the hydrogen gas-containing beverage is filled with a beverage containing hydrogen gas.

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