JP2017132504A - Packaging material, packaging bag, and package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging material which can form a packaging bag which can maintain excellent tearability even when a packaging object has a high alcohol content.SOLUTION: The present invention provides a packaging material 60 for an object containing an alcohol. The packaging material has a substrate layer 10, a barrier layer 30, and a sealant layer 50 in the stated order. An anchor coat layer 40 containing a titanium oxide is provided between the barrier layer 30 and sealant layer 50.SELECTED DRAWING: Figure 1

Description

  The present disclosure relates to a packaging material, a packaging bag, and a package.

  As a packaging bag for packaging an alcohol-containing material, a packaging bag produced by heat-sealing a packaging material in which a base material layer, a barrier layer, and a sealant layer are laminated is known. Examples of the alcohol-containing material include clean cotton in which absorbent cotton is impregnated with alcohol for sterilization or the like in surgical medicine. Such a packaging bag for packaging clean cotton is required to have good openability in preparation for an emergency situation.

  In Patent Document 1, in order to improve alcohol resistance of a packaging bag and tearability when the packaging bag is opened, an aqueous dispersion in which a polyolefin copolymer resin is dispersed without containing a non-volatile aqueous additive It has been proposed to improve hand cutting by providing an anchor coat layer formed by applying and drying by heating.

JP 2008-94471 A

  A packaging material that wraps an article to be packaged with a high alcohol content, such as a clean cotton containing alcohol, used in medicine, may have a reduced tear property due to the influence of alcohol. When the concentration of alcohol in non-packaged goods is high, the effect is particularly large, and therefore, there is a need for a packaging material that can be easily opened by being excellent in tearing regardless of the alcohol content. Yes.

  Therefore, an object of the present invention, in one aspect, is to provide a packaging bag and a package that can maintain good tearability even when the alcohol content of the packaged object is high. . Another object of the present invention is to provide a packaging material capable of forming the above-described packaging bag and package.

  In one aspect, the present invention is a packaging material for an alcohol-containing material, comprising a base material layer, a barrier layer, and a sealant layer in this order, and a titanium layer between the barrier layer and the sealant layer. Provided is a packaging material including an anchor coat layer containing an oxide.

  The packaging material includes an anchor coat layer containing titanium oxide between the barrier layer and the sealant layer. Even if this anchor coat layer is used as a packaging material for packaging an alcohol-containing material having a high alcohol content, it can maintain high adhesion. By providing such an anchor coat layer between the barrier layer and the sealant layer, high adhesion between the anchor coat layer and the barrier layer can be maintained. Therefore, good tearability can be maintained over a long period of time.

  The titanium oxide is preferably a crosslinked product of titanium alkoxide. Thereby, better tearability can be maintained over a long period of time.

  The sealant layer preferably has an uneven structure on the surface opposite to the anchor coat layer, and the lattice area ratio of the uneven structure is preferably 40 to 80%. By having the concavo-convex structure, the tip of the tear can easily progress along the concave portion, and the tearability can be further improved.

  The alcohol content of the alcohol-containing material is preferably 50% by mass or more. Thus, even if the alcohol content of the alcohol-containing material is high, the packaging material can maintain good tearability over a long period of time.

  In another aspect, the present invention provides a packaging bag formed by laminating laminated films, wherein the laminated film includes the packaging material described above. Such a packaging bag is provided with a packaging material that can maintain high adhesion between the anchor coat layer and the barrier layer even if the article to be packaged is an alcohol-containing product having a high alcohol content. Therefore, good tearability can be maintained over a long period of time.

  In still another aspect, the present invention provides a package including the packaging bag and a package to be packaged therein, wherein the package is an alcohol-containing product. The packaging bag of such a package includes a packaging material that can maintain high adhesion between the anchor coat layer and the barrier layer even if the alcohol content of the packaged item is high. Therefore, good tearability can be maintained over a long period of time.

  In one aspect, the present invention can provide a packaging bag and a package that can maintain good tearability even when the alcohol content of a packaged object is high. In another aspect, the present invention can provide a packaging material capable of forming the above-described packaging bag and package.

FIG. 1 is a cross-sectional view showing an embodiment of a packaging material. FIG. 2 is a cross-sectional view showing another embodiment of the packaging material. FIG. 3 is an enlarged view showing a part of the surface of the sealant layer. FIG. 4 is an enlarged view showing a part of the cross section of the sealant layer. FIG. 5 is a front view showing an embodiment of the packaging bag. FIG. 6 is a perspective view showing another embodiment of the packaging bag.

  Hereinafter, some embodiments will be described with reference to the drawings in some cases. However, the following embodiments are exemplifications and are not intended to limit the present invention to the following contents. In the description, the same reference numerals are used for the same elements or elements having the same function, and redundant description is omitted in some cases. Further, the positional relationship such as up, down, left and right is based on the positional relationship shown in the drawings unless otherwise specified. Further, the dimensional ratios in the drawings are not limited to the illustrated ratios.

  FIG. 1 is a schematic cross-sectional view of a packaging material according to an embodiment. The packaging material 60 is a laminated film, and has a laminated structure including the base material layer 10, the intermediate layer 20, the barrier layer 30, the anchor coat layer 40, and the sealant layer 50 in this order.

  The base material layer 10 is made of fine paper or a resin film. Examples of the resin film include polyester films such as polyethylene terephthalate (PET) and polyethylene naphthalate (PEN); polyolefin films such as polyethylene and polypropylene; polystyrene films; polyamide films such as 66-nylon; polycarbonate films and polyacrylonitrile films. And engineering plastic films such as polyimide films.

  You may use the said resin film individually by 1 type or in combination of 2 or more types. The base material layer 10 may be configured by laminating a plurality of the same type. The resin film may be either stretched or unstretched. At least one stretched film and at least one unstretched film may be laminated. The base material layer 10 can improve mechanical strength and dimensional stability by having a film arbitrarily stretched in the biaxial direction.

  The base material layer 10 may have a polyolefin film from the viewpoint of improving tearability and reducing the manufacturing cost. The base material layer 10 may have a polyester film from the viewpoint of improving flexibility and reducing manufacturing costs.

  The thickness in particular of the base material layer 10 is not restrict | limited, For example, 3-50 micrometers may be sufficient and 6-30 micrometers may be sufficient. The thickness is appropriately adjusted according to the application or required characteristics. The base material layer 10 may contain at least one additive selected from fillers, antistatic agents, plasticizers, lubricants, antioxidants, and the like. The surface of the base material layer 10 may be subjected to at least one treatment selected from chemical treatment, solvent treatment, corona treatment, plasma treatment, and ozone treatment.

  The intermediate layer 20 provided between the base material layer 10 and the barrier layer 30 may be a resin layer or an anchor coat layer. Further, a combination of an anchor coat layer and a resin layer may be used. The anchor coat layer here is different from the anchor coat layer 40 described later, and a known one can be used. Examples of the resin layer include a layer made of polyolefin such as polyethylene. The intermediate layer 20 may be a layer formed of an adhesive such as a urethane adhesive, a polyester adhesive, a polyamide adhesive, an epoxy adhesive, and an isocyanate adhesive. Providing the intermediate layer 20 is not essential, and in some embodiments the intermediate layer 20 may not be present. In this case, the base material layer 10 and the barrier layer 30 may be directly adhered to form the packaging material.

  The barrier layer 30 is a layer having a barrier property. Examples of the barrier layer 30 include a metal foil, a vapor-deposited film made of an inorganic material, a resin film, and a resin film obtained by laminating a vapor-deposited layer. Specific examples include aluminum foil, aluminum vapor deposition film, aluminum foil laminated PET film, inorganic vapor deposition film such as silica, and various barrier films such as nylon barrier film and ethylene vinyl alcohol barrier film. You may have these 1 type individually or in combination of 2 or more types.

  The thickness of the barrier layer 30 is not particularly limited. When the barrier layer 30 consists of aluminum foil, the thickness is 7-9 micrometers, for example. When the barrier layer 30 consists of a vapor deposition layer, the thickness is 5-100 nm, for example. Thus, the thickness is appropriately adjusted according to the material of the barrier layer 30 and the application of the packaging material 60. The barrier layer 30 can be formed by, for example, a dry lamination method, an extrusion lamination method, a vacuum deposition method, a sputtering method, an ion plating method, a plasma vapor deposition method (CVD), or the like.

  Since the packaging material 60 includes the barrier layer 30, when used in a packaging bag, the packaging material 60 sufficiently suppresses the volatilization of alcohol (ethanol) even if the alcohol content (ethanol content) of the packaged item is high. it can. Moreover, it can suppress that oxygen, water vapor | steam, etc. penetrate | invade in a packaging bag. Thereby, the drying and deterioration of the package can be sufficiently suppressed.

  The anchor coat layer 40 is provided between the barrier layer 30 and the sealant layer 50, and has a function of bonding the barrier layer 30 and the sealant layer 50 together. The anchor coat layer 40 includes titanium oxide. The content of the titanium oxide in the anchor coat layer 40 is 1 to 8% by mass in terms of titanium from the viewpoint of maintaining a sufficiently high adhesive force.

  The anchor coat layer 40 can maintain a high adhesive force between the barrier layer 30 and the sealant layer 50 when the packaging material 60 is used in a packaging bag for packaging an alcohol-containing material such as ethanol. Thereby, good tearability can be maintained over a long period of time. Therefore, the packaging material 60 can be suitably used as a packaging material for alcohol-containing materials or ethanol-containing materials.

Examples of the titanium oxide contained in the anchor coat layer 40 include a cross-linked product that is a heating product of titanium alkoxide. The titanium alkoxide is represented by, for example, a general formula of Ti (OR) ₄ . Here, R is, for example, a linear or branched alkyl group having 3 to 8 carbon atoms, and a plurality of R may be the same or different. The crosslinked product of titanium alkoxide has, for example, a crosslinked structure represented by the following formula (I).

  For the anchor coat layer 40, a solution obtained by dissolving titanium alkoxide in a solvent is applied onto the barrier layer 30 and dried. Then, by heating to 80-150 degreeC, a hydrolysis or thermal decomposition advances and the titanium oxide which is a crosslinked material represented by Formula (I) produces | generates. The anchor coat layer 40 thus generated may be a titanium oxide film. A normal organic solvent can be used as a solvent for preparing the solution. Note that water may be used as a solvent, and titanium alkoxide may be oligomerized and applied onto the barrier layer 30. However, from the viewpoint of improving wettability on the barrier layer 30, it is preferable to use a solution obtained by dissolving titanium alkoxide in an organic solvent.

  The thickness of the anchor coat layer 40 is, for example, 2 μm or less from the viewpoint of suppressing the adhesive strength and the packaging material 60 from becoming too thick. The adhesive strength (laminate strength) of the anchor coat layer 40 is, for example, 0.5 N / 15 mm width or more, and preferably 1 N / 15 mm width or more. This laminate strength can be measured by a T-type peeling method (crosshead speed: 300 mm / min) using a Tensilon type tensile tester in accordance with JIS Z 0238: 1998.

  The sealant layer 50 is made of a resin that can be melted and fused by heat. Examples of such resins include low density polyethylene, medium density polyethylene, high density polyethylene, linear (linear) low density polyethylene, polypropylene, ethylene-vinyl acetate copolymer, ionomer resin, and ethylene-acrylic acid copolymer. Examples thereof include a polymer, an ethylene-methyl acrylate copolymer, an ethylene-methacrylic acid copolymer, and an ethylene-propylene copolymer. Any one of these may be used alone or in combination of two or more.

  The sealant layer 50 may be laminated on the anchor coat layer 40 while forming the resin composition by extrusion lamination, or a filmed sheet may be bonded to the anchor coat layer 40. The thickness of the sealant layer 50 may be, for example, 10 to 100 μm or 15 to 50 μm.

  The packaging material 60 may include one or a plurality of other intermediate layers between the above-described layers. Examples of the intermediate layer include nylon, polyethylene terephthalate, polyamide, polyethylene, polypropylene, polyvinyl chloride, polycarbonate, polyvinyl alcohol, ethylene-propylene copolymer, and saponified ethylene-vinyl acetate copolymer. .

  FIG. 2 is a schematic cross-sectional view of a packaging material according to another embodiment. The packaging material 62 is a laminated film and has a laminated structure including the base material layer 10, the anchor coat layer 21, the resin layer 22, the barrier layer 30, the anchor coat layer 40, and the sealant layer 50 in this order. The base material layer 10, the barrier layer 30, the anchor coat layer 40, and the sealant layer 50 are the same as the packaging material 60 described above. The anchor coat layer 21 is different from the anchor coat layer 40, and a known one can be used. Examples of the resin layer 22 include a polyolefin layer such as polyethylene.

  FIG. 3 is a diagram showing a part of the surface 50 a of the sealant layer 50 in the packaging materials 60 and 62. 4 is a cross-sectional view of the sealant layer 50 taken along the line IV-IV in FIG. As shown in FIGS. 3 and 4, the sealant layer 50 has a lattice-like uneven structure formed on the surface 50 a. The concavo-convex structure includes a convex portion 52 having a substantially rectangular shape in plan view and a concave portion 54 that partitions the convex portion 52.

  By providing the sealant layer 50 with the uneven structure on the surface 50a, the tearability of the packaging bag using the packaging material 60 (62) can be made sufficiently good. This is because the front end of the tear progresses smoothly along the recess 54 when the packaging bag is torn. On the other hand, by having the convex part 52, even if the article to be packaged is an alcohol-containing product having a high alcohol content, the volatilization of alcohol can be sufficiently suppressed.

  The lattice area ratio is preferably 30 to 80%, more preferably 40 to 80%, and even more preferably 40 to 40% from the viewpoint of achieving both good tearability and suppression of alcohol volatilization at a high level. 70%. The lattice area ratio is obtained as a ratio of the total area of the protrusions 52 to the area of the surface 50a of the sealant layer 50 when viewed in a plane as shown in FIG.

  The lengths of the long side a and the short side b of the convex portion 52 shown in FIG. 3 are, for example, 200 to 350 μm and 150 to 300 μm. The width c and width d of the recess 54 shown in FIG. 3 is, for example, 40 to 150 μm. The convex portion 52 may be a square (that is, a = b). The width c and the width d may be the same or different. The corners of the convex portion 52 may be rounded.

  The height h of the convex part 52 shown by FIG. 4 is 10-50 micrometers, for example. The side wall of the convex portion 52 is parallel to the vertical direction in FIG. 4, but may be inclined. That is, the convex portion 52 may have a trapezoidal shape when viewed in a cross section as shown in FIG.

  FIG. 5 is a plan view showing an embodiment of a packaging bag formed using the packaging material described above. The packaging bag 100 is configured by bonding a pair of laminated films together. As the laminated film, the packaging material 60 (62) described above can be used. That is, the packaging bag 100 is formed between the pair of packaging materials 60 (62) by the seal portion 101 formed by bonding the peripheral edges of a pair of substantially rectangular film-shaped packaging materials 60 (62). Storage portion 102. That is, the packaging bag 100 is sealed by the seal portion 101 at the side end, the lower end, and the upper end. The packaging bag 100 includes an accommodation portion 102 in which an article to be packaged such as an alcohol-containing material is accommodated in a non-sealing portion (sheet portion) surrounded by the sealing portion 101. In addition, you may seal the sealing part 101 of a lower end part, after filling the to-be-packaged item in the accommodating part 102. FIG.

  The pair of packaging materials 60 (62) are overlapped so that the surfaces 50a of the sealant layer 50 shown in FIG. 1 or FIG. 2 face each other. The pair of film-shaped packaging materials 60 (62) may be bonded to each other at the seal portion 101 with an adhesive.

  In the packaging material 60 (62) constituting the packaging bag 100, the barrier layer 30 and the sealant layer 50 are bonded to each other by the anchor coat layer 40. Since the anchor coat layer 40 contains titanium oxide, good tearability can be maintained even when an alcohol-containing material having a high alcohol content is packaged. The alcohol-containing material that is a packaged item is, for example, alcohol-cleaned cotton. The alcohol content of the alcohol-containing material may be 50% by mass or more, or 80% by mass or more. The alcohol is, for example, ethanol.

  It is not essential that the pair of packaging materials 60 (62) constituting the packaging bag 100 have the same layer configuration. For example, the pair of packaging materials 60 (62) includes the barrier layers 30 made of different materials. Also good.

  The packaging bag 100 may include an opening means 120. The unsealing means has a pair of easy-opening process parts 124 made of a group of scars formed on the seal part 101 at the side end part, and a half-cut line 121 serving as an opening orbit between the pair of easy-opening process parts 124. The half cut line 121 can be formed using a laser. The easy-open processing part 124 is not limited to the scar group, and may be a V-shaped, U-shaped or I-shaped notch.

  A procedure for manufacturing the packaging bag 100 and the packaging body 200 using the packaging material 60 (62) will be described below. A pair of packaging materials 60 (62) is prepared. The sealant layers 50 of the packaging material 60 (62) are opposed to each other, and the sealant layers are bonded to each other. As a result, the seal portion 101 is formed at the upper end portion and the side end portion, and a non-seal portion surrounded by a U-shape by the seal portion 101 is formed. In this way, a packaging bag 110 in which only the upper end portion (or only the lower end portion) is not sealed as shown in FIG. 6 is obtained. In some embodiments, the packaging bag may be partially unsealed as shown in FIG.

  Next, an article to be packaged is filled from the upper end (or the lower end) in an unsealed state. Thereafter, the packaging materials 60 (62) are bonded to each other at the upper end (or lower end), and the seal portion 101 is also formed at the upper end (or lower end). Thus, the package 200 provided with the packaging bag 100 and the to-be-packaged goods accommodated in it can be manufactured.

  As mentioned above, although several embodiment was described, this invention is not limited to the said embodiment at all. For example, the packaging material may include an arbitrary layer or thin film. The shape of the packaging bag is not limited to a four-sided bag, and may be, for example, a two-sided bag, a three-sided bag, or a palm bag.

  The contents of the present invention will be described in more detail with reference to examples and comparative examples, but the present invention is not limited to the following examples.

Example 1
On one surface of a biaxially stretched polyethylene terephthalate film, a 7 μm thick aluminum foil (manufactured by Toyo Aluminum Co., Ltd., thickness: 7 μm) serving as a barrier layer was bonded by a dry laminating method with a polyurethane adhesive.

  On the aluminum foil, an adhesive solution in which the titanium alkoxide represented by the above formula (I) was dissolved in ethyl acetate was applied. The content of titanium oxide in this adhesive solution in terms of Ti was 3.8% by mass. After the applied adhesive liquid was dried, EMAA was bonded to the aluminum foil adhesive liquid application surface by heating by an extrusion laminating method.

  By this heating, the crosslinking reaction of the titanium alkoxide contained in the adhesive proceeds, and the barrier coat layer made of aluminum foil and the sealant layer (thickness: 25 μm) made of EMAA are bonded, and the anchor coat layer containing titanium oxide Formed. In this way, a packaging material was produced in which the base material layer, the intermediate layer, the barrier layer, the anchor coat layer, and the sealant layer were laminated in this order.

  The packaging material was heat-sealed to prepare a packaging bag. Ethanol-containing clean cotton (ethanol content: 50% by mass or more) was accommodated in the packaging bag and sealed to prepare a package. Immediately after production (initial), after 12 hours, and after 72 hours, the adhesive strength between the barrier layer and the sealant layer in the packaging material constituting the package was measured. Specifically, in accordance with JIS Z 0238: 1998, a T-type peeling method (crosshead speed: 300 mm) using a tensile testing machine (manufactured by A & D Co., Ltd., trade name: Tensilon Universal Material Testing Machine). / Min), the adhesive strength (laminate strength) was measured. The measurement results are shown in Table 1.

(Comparative Example 1)
A packaging material was produced in the same manner as in Example 1 except that HDI burette was used instead of titanium alkoxide as the adhesive. And a packaging body is produced like Example 1, and the adhesive strength between the barrier layer (aluminum foil) and sealant layer (EMAA film) in the packaging material which comprises the packaging body immediately after production (initial stage) is measured. did. The measurement results are shown in Table 1.

(Comparative Example 2)
A packaging material was produced in the same manner as in Example 1 except that a silane coupling agent was used instead of titanium alkoxide as the adhesive. And a packaging body is produced like Example 1, and the adhesive strength between the barrier layer (aluminum foil) and sealant layer (EMAA film) in the packaging material which comprises the packaging body immediately after production (initial stage) is measured. did. The measurement results are shown in Table 1.

  As shown in Table 1, it was confirmed that the packaging material of Example 1 can maintain high adhesive strength. On the other hand, in Comparative Examples 1 and 2, high adhesive strength could not be obtained.

(Example 2)
A high quality paper (52.3 g) and an aluminum foil (manufactured by Toyo Aluminum Co., Ltd., thickness: 7 μm) were bonded together by a melted polyethylene by an extrusion laminating method. The same adhesive solution as in Example 1 was applied to the surface of the aluminum foil opposite to the polyethylene layer side and dried. Then, the same EMAA as Example 1 was bonded together by heating on the adhesive liquid application surface of the aluminum foil by the extrusion laminating method. By this heating, a crosslinking reaction of titanium alkoxide contained in the adhesive progressed, and an anchor coat layer containing titanium oxide was formed to adhere the barrier layer made of aluminum foil and the sealant layer made of EMAA. In this way, a packaging material was produced in which the base material layer (paper layer), intermediate layer (polyethylene layer), barrier layer, anchor coat layer, and sealant layer as shown in FIG. 1 were laminated in this order.

  A laser printing plate having a concavo-convex structure was provided on the cylinder surface of the extruder used in the extrusion laminating method when laminating the above-mentioned EMAA. That is, in the above-described extrusion laminating method, EMAA was bonded to the aluminum foil adhesive-coated surface using an extruder provided with a cylinder having the laser printing plate. For this reason, the uneven structure as shown in FIG.3 and FIG.4 was formed in the surface on the opposite side to the barrier layer side of an EMAA film. The values of a, b, c, d and the lattice area ratio of the concavo-convex structure shown in FIG. 3 were as shown in Table 2. In addition, the height h of the convex part shown in FIG. 4 was 20-25 micrometers.

  The produced packaging material was cut into a size of 100 mm (length) × 100 mm (width), and heat sealing was performed so that the surfaces of the sealant layer having an uneven structure faced each other, thereby producing a packaging bag having an opening at the upper end. . Ethanol diluted to 80% by mass with water was accommodated in the packaging bag, and the opening was heat sealed to produce a package. The tear strength of each packaging bag was measured immediately after production of the package (initial), and after 0.5 days, 1 day, 2 days, 3 days, and 7 days had elapsed. The tear strength was measured by a trouser tear test. Specifically, using “Shimadzu Autograph AGS-X” manufactured by Shimadzu Corporation, the measurement was performed according to JIS K 7128-1: 1998. The tearing speed was 200 mm / min.

  The tear strength when tearing along the film flow direction during biaxial stretching of the polyethylene film as the base material layer of the packaging material is shown in Table 3, and the tear strength when tearing along the direction perpendicular to the film flow direction. Are shown in Table 4, respectively.

(Comparative Example 3)
Without using an adhesive solution, an extrusion laminating method was used to attach an EMAA film, which is a sealant layer, directly onto the aluminum foil. On the cylinder surface, a laser printing plate having a concavo-convex structure was not provided. A packaging material, a packaging bag, and a packaging body were produced in the same manner as in Example 2 except that a sealant layer that did not have was formed. And tear strength was measured like Example 2. The measurement results are shown in Tables 3 and 4.

  Tables 3 and 4 show the measured values of the tear strength (N) and the change rate of the tear strength when the initial measured values are used as the lower level. In Example 2, the change rate changed between 0.8 and 1.2, whereas in Comparative Example 3, it was confirmed that the tear strength significantly increased after 0.5 days or longer.

  From the above results, in the packaging materials of Examples 1 and 2, the adhesive strength between the barrier layer and the sealant layer is high and good tearability can be maintained, whereas in the packaging materials of Comparative Examples 1 to 3, the barrier layer It was confirmed that the adhesive strength between the sealant layer and the sealant layer was lowered and the tearability was lowered. Moreover, it was confirmed from the comparison of the tear strength in the initial stage of Tables 3 and 4 that when the sealant layer has an uneven structure, the tear strength is reduced and the tearability can be further improved.

  According to the present disclosure, there are provided a packaging bag and a package that can maintain good tearability even when the alcohol content of the package is high. Moreover, the packaging material which can form the above-mentioned packaging bag and package is provided.

  DESCRIPTION OF SYMBOLS 10 ... Base material layer, 20 ... Intermediate layer, 21 ... Anchor coat layer, 22 ... Resin layer, 30 ... Barrier layer, 40 ... Anchor coat layer, 50 ... Sealant layer, 52 ... Convex part, 54 ... Concave part, 60, 62 DESCRIPTION OF SYMBOLS ... Packaging material, 100 ... Packaging bag, 101 ... Sealing part, 102 ... Storage part, 110 ... Packaging bag, 120 ... Opening means, 121 ... Half-cut line, 124 ... Easy opening processing part, 200 ... Packaging.

Claims (6)

A packaging material for alcohol-containing material,
A substrate layer, a barrier layer, and a sealant layer are provided in this order,
A packaging material comprising an anchor coat layer containing titanium oxide between the barrier layer and the sealant layer.   The packaging material according to claim 1, wherein the titanium oxide is a crosslinked product of titanium alkoxide. The sealant layer has a concavo-convex structure on the surface opposite to the anchor coat layer,
The packaging material according to claim 1 or 2, wherein a lattice area ratio of the uneven structure is 40 to 80%.   The packaging material as described in any one of Claims 1-3 whose alcohol content of the said alcohol containing material is 50 mass% or more. A packaging bag formed by laminating laminated films,
A packaging bag provided with the packaging material as described in any one of Claims 1-4 in which the said laminated | multilayer film. A packaging bag according to claim 5, and an article to be packaged accommodated in the packaging bag,
A package in which the package is an alcohol-containing product.

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