JP2006273369A - Transparent barrier laminate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transparent barrier laminate to be used as a packaging material in a packaging bag for storing solid, granular or liquid contents containing volatile chemicals such as fragrant materials or medicinal properties, which has good packaging suitability with a small number of laminations and is excellent in barrier properties such as moisture permeability without requiring a complicated work process. <P>SOLUTION: The transparent barrier laminate is to be used in the packaging bag for storing solid, granular or liquid contents containing volatile chemicals such as fragrant materials or medicinal properties. It is a laminate of: a transparent barrier film consisting of a thin film of an inorganic oxide overlying at least one of surfaces of a thermoplastic plastic base; and a heat-sealable transparent barrier film. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a transparent barrier laminate for use in a packaging bag for storing a solid, granular, or liquid container containing a volatile agent such as a fragrance or a medicinal component. More specifically, the present invention relates to a transparent barrier laminate excellent in barrier properties against water vapor, oxygen and the like. As stored items, cosmetics such as perfumes, health foods, spices, foods such as curry, medical chemicals such as haps, transdermal absorbents, antibacterial agents such as antifungal agents, antibacterial agents, insecticides, Examples include nebulizers such as bactericides, daily necessities such as soaps and bath preparations, food preservatives such as freshness preserving agents and gas displacement agents.

  Conventionally, as a packaging material used for packaging bags containing solid, granular, or liquid storage products containing volatile agents such as fragrances and medicinal ingredients, the volatile agents are volatilized out of the package and stored. Is considered not to deteriorate.

  For this reason, various types using a gas barrier aluminum foil as an intermediate layer of a packaging material have been developed and proposed.

  In recent years, it has a structure in which a thin film of inorganic oxide such as silicon oxide or aluminum oxide is provided on a thermoplastic film substrate such as polyethylene terephthalate film as a packaging laminate having barrier properties such as water vapor and oxygen. Many packaging laminates using transparent barrier films have been used.

  In addition, the storage and use functions of stored items are improved by using a packaging laminate material that has a barrier property for storing solid, granular, and liquid stored items containing volatile agents such as fragrances and medicinal ingredients. Various packaging forms and packaging methods have been developed and proposed.

(1) Prior art 1
A fragrance packaging material (see, for example, Patent Document 1) that suppresses delamination due to deterioration of an adhesive by a volatile agent such as a fragrance is known.

  As shown in FIG. 8, this fragrance packaging material 100 is formed by laminating a fragrance-retaining film layer 101, an adhesive layer 102, a gas barrier resin layer 103, a peelable resin layer 104, and a non-fragrance-retaining film layer 106 in this order. ing.

  A nylon resin layer is laminated between the gas barrier resin layer 103 and the peelable resin layer 104. Further, a printing base material layer 107 is laminated on the upper side surface of the fragrance-retaining film layer 101.

  The fragrance packaging material is used as all or part of the bag-making material of the plastic film pouch 111 for sealingly packaging the tray-like container 110 containing the fragrance from the outside as shown in FIG. ing.

  Furthermore, it is also used for all or part of the bag-making material of the plastic film pouch 111 for hermetically wrapping one or a plurality of sachets 112 (small bags) containing the fragrance as shown in FIG. Has been.

(2) Prior art 2
Also known are easy peel packaging materials that are difficult to adsorb fragrance components such as food or medicinal components such as cosmetics and pharmaceuticals, and fragrance components, and packaging bags using the same (for example, see Patent Document 2).

  As shown in FIG. 11, the packaging material 200 has an easy peel property sealant layer 114 laminated on the back surface of the base material 113, which is at least one layer, via an aluminum foil 115.

  The sealant layer 112 is formed of a polymer alloy containing 1 to 50% by weight of polybudene 1 homopolymer in a polyolefin-based thermoplastic resin.

(3) Prior art 3
In addition, active ingredients (volatile chemicals) such as fragrances, insect repellents, desiccants, deodorants, etc. may be emitted during storage or distribution, or moisture absorption and deodorization performance may be reduced due to moisture absorption or odor component adsorption. There is also known a packaging bag (see, for example, Patent Document 3) formed of a gas-impermeable film having no gas.

  As shown in FIG. 12, the packaging bag 300 is divided into a content storage space 118 and an opening space 119 by a gas permeable or liquid permeable partition sheet 117 in a bag body 116 made of a gas impermeable film. ing.

  After the contents 120 are stored in the storage space 118 from the upper opening of the bag body 116, the opening is hermetically sealed.

  In use, the opening space 119 is opened to allow gas or liquid to flow inside and outside the packaging bag through the partition sheet 117.

(4) Prior art 4
In addition, aromatic deodorants and insect repellents containing volatilizing chemicals are stored in the inner bag with a gas barrier film, and the inner packaging bag is removed by external pressure such as rubbing with a finger or hitting the packaging bag immediately before use. A double packaging bag (see, for example, Patent Document 4) that is used after being broken and gradually evaporated through a gas permeable outer packaging bag is also known.

  In this double packaging bag 400, as shown in FIG. 13, a stored item 122 containing a volatile chemical is stored in an inner bag 121 that easily breaks a gas barrier film.

  The inner bag 121 has good gas permeability and is stored in an outer packaging bag 123 that is difficult to break. And when using, the volatile chemical | medical agent is volatilized inside and outside the outer packaging bag 123 by breaking the inner bag 121.

Prior art documents are shown below.
JP 2004-299203 A JP 2002-225208 A Japanese Patent Laid-Open No. 9-2528 Japanese Utility Model Publication No. 5-62463

(1) About Prior Art 1 In Prior Art 1, an aluminum foil having a thickness of 7 to 9 μm is formed on the aroma retaining film layer. For this reason, there is a problem that the stored items are not visible from the outside.

  In addition, there is a problem that heating by a microwave oven cannot be performed when the stored item must be heated depending on use or usage of the stored item.

  Furthermore, since the aluminum foil used for the aroma film layer is as thin as 7-9 μm, pinholes are likely to occur, and when delamination occurs, the quality of the stored items is significantly reduced. is there.

  Moreover, since there are many laminated | stacked films, there exists a problem that the thickness of a film becomes thick and packaging suitability worsens.

  Furthermore, depending on the packaging form such as a gusset bag, there is a problem that the adhesive portion is not completely adhesively sealed and the volatile chemical component in the bag is volatilized.

  Further, when producing the fragrance packaging material, the work process is complicated, such as using a co-push laminating machine.

(2) Prior Art 2 In Prior Art 2, an aluminum foil layer is formed between the base material and the sealant layer as in Prior Art 1. For this reason, there is a problem that the stored item cannot be seen when the stored item is stored using the packaging material.

  In addition, there is a problem that heating by a microwave oven cannot be performed when the stored item must be heated depending on use or usage of the stored item.

  Furthermore, since the film thickness of the aluminum foil used between the base material and the sealant layer is as thin as 7-9 μm, pinholes are likely to occur, and when delamination occurs, the quality of the stored items is significantly reduced. is there.

(3) Prior Art 3 In Prior Art 3, the gas-impermeable film of the packaging bag is coated with a plastic film such as polyethylene, polypropylene, polyamide, polyvinyl alcohol, ethylene-vinyl acetate copolymer, cellophane, polyester film or the like. For example, a film in which a vinylidene chloride resin is coated, or a thin film such as aluminum or silicon is formed is used.

  In addition, as the partition sheet, paper, nonwoven fabric, woven fabric, knitted fabric, plastic film such as polyethylene or polypropylene, or various laminated films formed with a large number of small holes are used.

  A partition sheet having good gas permeability is folded in half to form a so-called self-standing bag (standing pouch) provided at the inner bottom of the two gas-impermeable films.

  As described above, the gas-impermeable film of the packaging bag is formed of the same base film having a barrier layer and a sealant layer. For this reason, when the surface of the barrier layer is scratched or cracked, there is a problem that the volatile chemical component in the bag is volatilized outside.

  In addition, since the gas-impermeable film has only one identical base film with a barrier layer and a sealant layer, there is a problem that a specific component is volatilized out when there are many volatilizing chemical components in the stored items. Furthermore, there is a problem that the sealant layer is deteriorated by a specific component.

  Furthermore, when a self-standing bag (standing pouch) is formed with a gas-impermeable film and a partition sheet with good gas permeability, there is a problem that a pinhole or the like due to poor adhesion occurs in the peripheral portion where the partition sheet is provided. .

(4) About Prior Art 4 In Prior Art 4, a storage item containing a volatile drug is stored in an inner bag of a double packaging bag. The inner bag is formed with a base film or a sealant layer that can be easily broken by an external pressure from the outside of the outer bag. For this reason, during storage or distribution, there is a problem that a part of the adhesive portion of the inner bag is peeled off by an external pressure and the volatile chemical is volatilized in and out of the outer packaging bag 123.

  In addition, after the double packaging bag stores the stored items in the inner bag, the storage opening is hermetically sealed. After the inner bag is stored in the outer bag, the storage port is hermetically sealed. For this reason, although the quantity which uses a gas-barrier packaging material is small, there exists a problem which the operation | work to accommodate is complicated and takes time.

  Moreover, although the quantity which uses a gas-barrier packaging material is small, since an inner bag and an outer bag are needed, there exists a problem that the packaging material used for the whole double packaging bag increases.

  This invention is made | formed in view of the said conventional problem, and it aims at providing the following transparent barrier laminated bodies.

  That is, the first object of the present invention is to provide a transparent barrier laminate that can be easily produced with a normal laminator without going through complicated work steps.

  The second object of the present invention is to provide a transparent barrier laminate capable of forming an appropriate thickness without increasing the thickness of the laminate due to a number of laminate configurations and without deteriorating packaging suitability. It is.

  The third object of the present invention is to provide a transparent barrier laminate having excellent water vapor permeability and oxygen permeability with a small number of laminated structures.

  The fourth object of the present invention is to provide a transparent barrier laminate that is not restricted by a packaging method or a packaging form when used as a packaging material.

  The fifth object of the present invention is to provide a transparent barrier laminate that is highly versatile and can be produced at low cost.

  Moreover, the 6th objective of this invention is to provide the transparent barrier laminated body which can see the stored item in a bag, when used for a packaging bag as a packaging material.

  Moreover, the 7th objective of this invention is to provide the transparent barrier laminated body which can give a microwave oven heating, when it is used for a packaging bag as a packaging material.

In order to solve the above problems, first, the invention according to claim 1 of the present invention is:
A transparent barrier laminate used for a package containing a solid or granular or liquid storage containing a fragrance or medicinal component volatile agent,
A transparent barrier laminate comprising a transparent barrier film obtained by laminating an inorganic oxide thin film on at least one surface of a thermoplastic plastic substrate, and a heat-sealable transparent barrier film.

Next, the invention according to claim 2 of the present invention is
2. The transparent barrier laminate according to claim 1, wherein the transparent barrier film and the heat-sealable transparent barrier film are laminated via an adhesive layer.

The invention according to claim 3 of the present invention is
The heat-sealable transparent barrier film has a water vapor permeability of 100 g / m ² / day at a temperature of 40 ° C. and a humidity of 90% RH, and an oxygen permeability of 50 ml / m ² / day or less at a temperature of 20 ° C. and a humidity of 0% to 100% RH. The transparent barrier laminate according to claim 1, wherein the laminate is a transparent barrier laminate.

  The transparent barrier laminate of the present invention can be produced without going through complicated work steps. For this reason, processing loss is small.

  In addition, the transparent barrier laminate of the present invention is excellent in water vapor permeability or oxygen permeability with a small number of laminated structures. And a thing with good packaging aptitude is made.

  Furthermore, when used as a packaging material in a package, the stored items stored in the package can be seen. Further, the package can be heated in a microwave oven.

  The transparent barrier laminate of the present invention can be easily produced using a general purpose machine. And material cost is cheap.

  The transparent barrier laminate of the present invention will be described in detail below along the embodiments with reference to the drawings. 1 to 2 show an embodiment of the present invention. 3 to 5 show a transparent barrier laminate for comparison with the transparent barrier laminate of the present invention.

  FIG. 1 is a schematic cross-sectional view illustrating an example illustrating the layer configuration of a transparent barrier laminate according to the present invention.

  In addition, the transparent barrier laminate of the present invention is used for a package that contains a solid, granular, or liquid container containing a volatile agent such as a fragrance or a medicinal component. As stored items, cosmetics such as perfumes, health foods, spices, foods such as curry, medical chemicals such as haps, transdermal absorbents, antibacterial agents such as antifungal agents, antibacterial agents, insecticides, Examples include nebulizers such as bactericides, daily necessities such as soaps and bath preparations, food preservatives such as freshness preserving agents and gas displacement agents.

  In addition, as a package, for example, a two-side seal bag or a three-side seal bag or a four-side seal bag, a side seal bag or an envelope-attached seal bag, a flat-sealed seal bag, a boat bottom seal bag, or a three-side seal bag or four-side Examples thereof include a self-standing packaging bag in which a lower portion of a flat bag such as a seal bag is widened back and forth and a rectangular flat bottom surface is formed at the bottom, or a self-standing packaging bag (standing pouch) having a gusset portion at the bottom of the bag.

  Moreover, as a heat sealing method, it can carry out by well-known methods, such as a bar seal, a rotation seal, a belt seal, an impulse seal, a high frequency seal, an ultrasonic seal, for example.

  Next, as shown in FIG. 1, a transparent barrier laminate 5 according to an embodiment of the present invention has a transparent barrier film 5 in which an inorganic oxide thin film 2 is laminated on at least one surface of a thermoplastic substrate 1. A transparent barrier film 4 having heat sealability is laminated with an adhesive layer 3 interposed therebetween.

  As the thermoplastic base material 1, any plastic film or sheet capable of holding an inorganic oxide non-crystalline thin film can be used. For example, polyolefin resin such as polyethylene, polypropylene, polybutene, (meth) acrylic resin, polyvinyl chloride resin, polystyrene resin, polyvinylidene chloride resin, saponified ethylene-vinyl acetate copolymer, polyvinyl alcohol Film, sheet of various resins such as glass, polycarbonate resin, fluorine resin, polyvinyl acetate resin, acetal resin, polyester resin, polyamide resin can be used. .

  These resin films or sheets may be uniaxially or biaxially stretched, but preferably biaxially stretched.

  The thickness is about 10 to 150 μm, preferably about 10 to 100 μm.

  In addition, the surface of the resin film or sheet may be subjected to a desired surface treatment in advance, if necessary, in order to improve close adhesion with an inorganic oxide vapor deposition film or the like. . As the surface treatment, for example, corona discharge treatment, ozone treatment, plasma treatment using oxygen gas or nitrogen gas, glow discharge treatment, oxidation treatment using chemicals, or the like can be performed.

  The surface treatment is carried out as a method for improving the tight adhesion between various resin films or sheets and inorganic oxide vapor deposition films, etc. In addition, for example, a primer coat agent layer, an anchor coat agent layer, an adhesive layer, or a vapor deposition anchor coat agent is previously formed on the surface of various resin films or sheets. A surface treatment layer can be formed by arbitrarily forming a layer or the like.

  Examples of the pretreatment coating agent layer include polyester resins, polyamide resins, epoxy resins, phenol resins, polyurethane resins, polyvinyl acetate resins, (meth) acrylic resins, A resin composition comprising a polyolefin resin such as polyethylene aly polypropylene or a copolymer or modified resin thereof, a cellulose resin, or the like as a main component of the vehicle can be used.

  The coating agent layer can be formed by using, for example, a solvent type, aqueous type, or emulsion type coating agent, a gravure roll coating method, a kiss coating method, a roll coating method. The coating can be performed using a coating method such as the Lucorating method or the like.

  The thermoplastic base material 1 may be subjected to surface printing or back printing by a normal printing method with a desired printing pattern such as characters, figures, symbols, patterns, patterns, etc., for example. .

In addition, as the inorganic oxide thin film constituting the transparent barrier film, any thin film obtained by making a metal oxide amorphous can be used. For example, silicon (Si), aluminum (Al), magnesium (Mg), calcium (Ca), potassium (K), tin (Sn), sodium (Na), boron (B), titanium (Ti), lead (Pb)
), Zirconium (Zr), yttrium (Y), and other metal oxides can be used as amorphous (amorphous) thin films.

  Further, among the above oxides, examples of suitable materials for packaging materials include thin films obtained by making metal oxides such as silicon (Si) and aluminum (Al) amorphous. A thin film obtained by making the metal oxide amorphous is called a metal oxide such as silicon oxide (SiOX), aluminum oxide (AIOX), magnesium oxide (MgOX), etc. Can do.

  The thickness of the inorganic oxide thin film varies depending on the type of metal used or the metal oxide, but is, for example, about 5 to 300 nm, preferably about 10 to 100 nm, and more preferably 3 About 6 nm is desirable. If it is thicker than 6 nm, it is difficult to form a good vapor deposition resistant protective film, which is not preferable. If it is less than 1 nm to less than 3 nm, the function as a vapor deposition resistant protective layer is lost, and the effect is exhibited. It becomes difficult.

  In the present invention, the inorganic oxide thin film may be not only one layer of the inorganic oxide thin film but also a laminate of two or more layers. And as a metal to be used or a metal oxide, it can also be used by the 1 type, or 2 or more types of mixture, and can comprise the thin film of the inorganic oxide mixed with the different kind of material.

  Moreover, as a method of forming an inorganic oxide thin film on a thermoplastic base material, for example, physical vapor deposition such as vacuum deposition, sputtering, ion plating, ion cluster beam method, etc. A chemical vapor deposition method (chemical vapor deposition method, CVD method) such as a plasma chemical vapor deposition method, a thermal chemical vapor deposition method, a photochemical vapor deposition method, etc. Can be mentioned.

  Alternatively, a metal oxide is used as a raw material, and this is heated to be deposited on the thermoplastic substrate 1, or a metal or metal oxide is used as a raw material, and oxygen is introduced to oxidize. There is an oxidation reaction vapor deposition method in which vapor deposition is performed on the thermoplastic substrate 1.

  Furthermore, a vapor deposition film can be formed using a plasma-assisted oxidation reaction vapor deposition method in which an oxidation reaction is supported by plasma. And when manufacturing the transparent barrier film used for the packaging material, a vacuum evaporation method or a plasma chemical vapor deposition method is mainly used.

  Examples of the heating method for heating the vapor deposition material such as the metal oxide include a resistance heating method, a high-frequency induction heating method, and an electron beam heating method (EB).

  Next, the adhesive layer 3 in which the transparent barrier film 5 and the heat-sealable transparent barrier film 4 are laminated is usually formed by a laminating method used when manufacturing a packaging material. Specifically, for example, wet lamination method, sandwich lamination method, dry lamination method, thermal lamination method, solvent-free lamination method, extrusion lamination method, T die extrusion molding method, T die coextrusion lamination method, inflation method, It is formed by the extrusion inflation method or the like.

  Further, when laminating, in order to improve the tight adhesion, if necessary, pretreatment such as corona treatment, ozone treatment or flame treatment can be applied to the film or sheet.

Furthermore, for example, anchor coating agents such as polyethyleneimine, polybutadiene, and organic titanium, or adhesives for laminates such as polyurethane, polyacryl, polyester, epoxy, polyvinyl acetate, and cellulose are known. An anchor coat agent, an adhesive, etc. can be arbitrarily used.

  Also, when coating an anchor coat agent or adhesive, etc., on a coater or laminator such as a roll coater, air knife coater, metering bar coater, fountain blade coater, bevel blade coater, short dwell coater or curtain coater. It is coated on film or sheet.

  The transparent barrier laminate of the present invention is produced as described above. And it is used as a packaging material.

The above invention will be described more specifically with reference to examples.
<Example 1>
As the transparent barrier laminate, a 12 μm thick biaxially stretched polyethylene terephthalate resin (PET) film was used for the thermoplastic substrate 1 with the configuration shown in FIG. Then, a vapor deposition film 2 of aluminum oxide having a thickness of 30 nm was formed on one surface by a reactive vapor deposition method by electron beam heating to produce a transparent barrier film 5.

  Further, a 30 μm thick ethylene-vinyl alcohol copolymer resin (EVOH) film (EF-HS manufactured by Kuraray Trading Co., Ltd.) was laminated on the transparent barrier film 5 as a heat-sealable transparent barrier film 4 by a dry lamination method. A transparent barrier laminate 10 was prepared.

<Example 2>
Next, as shown in FIG. 2, a 30 μm-thick polyacrylonitrile resin (PAN) film 6 (BX made by Tamapoly) is laminated on the transparent barrier film 5 obtained in Example 1 by the dry lamination method, and the transparent barrier film 5 is obtained. The laminated body 20 was produced.

<Comparative example 1>
As shown in FIG. 3, a 30 μm-thick linear low density polyethylene resin (L-LDPE) film is laminated on the transparent barrier film 5 obtained in Example 1 by a dry lamination method, and the transparent barrier laminate 30 is formed. Produced.

<Comparative example 2>
As shown in FIG. 4, a 30 μm-thick ethylene-vinyl alcohol copolymer resin (EVOH) film 8 was laminated on the transparent barrier film 5 obtained in Example 1 by the dry lamination method 3, and the thickness was further 30 μm. A linear low density polyethylene resin (L-LDPE) 7 was laminated by the dry lamination method 3 to produce a transparent barrier laminate 40.

<Comparative Example 3>
As shown in FIG. 5, a 30 μm-thick polyethylene terephthalate resin (PET) film 12 (Tamapoly PETG) is laminated on the transparent barrier film 5 obtained in Example 1 by the dry lamination method 3 to obtain a transparent barrier laminate. 50 was produced.

Next, the transparent barrier laminate produced above was tested for the following evaluation items.
(1) Evaluation of perfume adsorptivity The transparent barrier laminate produced above was produced in a 10 cm square bag, 5 g of menthol crystals were sealed in the bag, and the sealing port was hermetically sealed. And after leaving at room temperature 25 degreeC for 1 week, the menthol adsorption amount per unit area of a bag was measured by GC-MS (gas chromatograph mass spectrometer). The results of the evaluation test are shown in FIG.
(2) Evaluation of barrier properties 20 g of a poultice sheet containing menthol as a medicinal component was quantified and sealed in a bag in the same manner as in (1). And it stored at 40 degreeC free and measured the weight over time, and measured the amount of moisture scattering from the inside as water vapor permeability. The results are shown in Table 1 and FIG.

また、図６に示す、評価テストの結果より明らかなように実施例１および実施例２のものは香料非吸着性に優れていた。比較例１〜３のものは、いずれも劣っていた。

In addition, as is clear from the results of the evaluation test shown in FIG. 6, the samples of Example 1 and Example 2 were excellent in non-perfume adsorption. All of Comparative Examples 1 to 3 were inferior.

  Further, as is apparent from the evaluation test results shown in Table 1 and FIG. 7, those in Example 1 and Example 2 were excellent in barrier properties. All of Comparative Examples 1 to 3 were inferior.

  The transparent barrier laminate of the present invention is an excellent invention that can be used in a wide range of fields including medical members, precision device members, electric / electronic members, and the like as well as being excellent as a packaging material.

It is a schematic sectional drawing which shows the structure of one Example of the transparent barrier laminated body of this invention. It is a schematic sectional drawing which shows the layer structure of other one Example of the transparent barrier laminated body of this invention. It is a schematic sectional drawing which shows the structure of the transparent barrier laminated body for carrying out the evaluation comparison test of the transparent barrier laminated body of this invention. It is a schematic sectional drawing which shows the structure of the other transparent barrier laminated body for carrying out the evaluation comparison test of the transparent barrier laminated body of this invention. It is a schematic sectional drawing which shows the structure of the other transparent barrier laminated body for carrying out the evaluation comparison test of the transparent barrier laminated body of this invention. It is a graph which shows the menthol adsorption amount evaluation result of the transparent barrier laminated body of this invention. It is a graph which shows the barrier property evaluation result of the transparent barrier laminated body of this invention. It is a schematic sectional drawing which shows the outline of the layer structure of the transparent barrier laminated body used conventionally. It is a perspective view which shows the use condition of the transparent barrier laminated body used conventionally. It is a perspective view which shows the use condition of the transparent barrier laminated body used conventionally. It is a schematic sectional drawing which shows the outline of the layer structure of the transparent barrier laminated body used conventionally. It is a perspective view which shows the use condition of the transparent barrier laminated body used conventionally. It is a perspective view which shows the use condition of the transparent barrier laminated body used conventionally.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Thermoplastic base material 2 ... Deposition layer 3 ... Adhesion layer 4 ... Heat-sealable transparent barrier film 5 ... Transparent barrier film 6 ... Polyacrylonitrile resin (PAN) film 7 ... Linear low density polyethylene resin (L-LDPE) Film 8 ... Ethylene-vinyl alcohol copolymer resin (EVOH) film 9 ... Deposition base film 10 ... Transparent barrier laminate 12 ... Polyethylene terephthalate resin (PET) film 20 ... Transparent barrier laminate 30 ... Transparent barrier laminate 40 ... Transparent barrier laminate 50 ... Transparent barrier laminate

Claims (3)

A transparent barrier laminate used for a package containing a solid or granular or liquid storage containing a fragrance or medicinal component volatile agent,
A transparent barrier laminate comprising a transparent barrier film obtained by laminating an inorganic oxide thin film on at least one surface of a thermoplastic plastic substrate, and a heat-sealable transparent barrier film.   The transparent barrier laminate according to claim 1, wherein the transparent barrier film and the heat-sealable transparent barrier film are laminated via an adhesive layer. The heat-sealable transparent barrier film has a water vapor permeability of 100 g / m ² / day at a temperature of 40 ° C. and a humidity of 90% RH, and an oxygen permeability of 50 ml / m ² / day or less at a temperature of 20 ° C. and a humidity of 0% to 100% RH. The transparent barrier laminate according to claim 1, wherein the laminate is a transparent barrier laminate.

Images