JP2005153979A

JP2005153979A - Packaging bag

Info

Publication number: JP2005153979A
Application number: JP2003398802A
Authority: JP
Inventors: Sachiko Kagawa; 幸子香川; Hajime Ishikawa; 始石川
Original assignee: Toppan Printing Co Ltd
Current assignee: Toppan Inc
Priority date: 2003-11-28
Filing date: 2003-11-28
Publication date: 2005-06-16

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packaging bag capable of storing a pair of contents with different levels of requirement on gas barrier properties of a packaging material to be used in the same bag, and easily mixing the contents for use by mixing. <P>SOLUTION: The bag comprises a laminated material of a sealant layer overlying one face of a base film layer, and a gas barrier layer with a predetermined width narrower than the base film layer overlying the other face, and has an opening side on one side and sealed sides on the other sides. There exist two content storing parts separated by a heat-sealed part provided at right angles at a predetermined position of the opening side, and one of the content storing parts is surrounded by a layer constituting part where the gas barrier layer of the laminated material overlies. The gas barrier layer consists of a barrier laminated film with a moisture permeability of ≤20 g/m<SP>2</SP>24 h, and an oxygen permeability of ≤5 ml/m<SP>2</SP>24 h atm, and the seal strength of the heat-sealed part is 2-10 N/15 mm width. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、使用する包装材料のガスバリア性の要求レベルが異なる一対の内容物を同一袋内にセットで収納できる包装袋に関するものである。 The present invention relates to a packaging bag in which a pair of contents having different gas barrier properties required for packaging materials to be used can be stored as a set in the same bag.

収納保存時に使用する包装材料のガスバリア性の要求レベルが異なる一対の内容物として、例えば、トイレタリ用品では２液反応タイプのヘアーカラー剤やパーマ液があり、日用品では個液反応タイプの発熱剤及び冷却剤、２液反応タイプの接着剤があり、医薬品では個液反応タイプや２液反応タイプの薬品及び輸液剤等の種々のものがある。これらの一対の内容物を容器や袋に収納する場合、従来は一対の内容物をそれぞれ別個に個包装し、保存、流通させていた。しかしながら、この場合、別個に個包装する為に包装時に使用する容器や袋を間違って使用してしまったり、生産設備も多種になって生産効率も悪く、さらに袋に収納した場合は一対の内容物を混合して使用する時に別容器が必要になる等種々の問題点を抱えていた。 As a pair of contents with different required levels of gas barrier properties of packaging materials used during storage and storage, for example, there are two-liquid reaction type hair color agents and permanent liquids in toiletries, and in daily necessities, individual liquid reaction type exothermic agents and There are coolants, two-component reaction type adhesives, and various pharmaceuticals such as single-component reaction type, two-component reaction type chemicals and infusion agents. In the case of storing a pair of these contents in a container or a bag, conventionally, the pair of contents has been individually packaged, stored and distributed. However, in this case, containers and bags used at the time of packaging are mistakenly used for individual packaging, production facilities become diverse, production efficiency is poor, and a pair of contents when stored in a bag. When mixing and using things, there were various problems such as the need for separate containers.

本発明の課題は、使用する包装材料のガスバリア性の要求レベルが異なる一対の内容物を同一袋内にセットで収納でき、その内容物を混合使用する時も容易に混合が可能な包装袋を提供することにある。 An object of the present invention is to provide a packaging bag in which a pair of contents having different gas barrier properties required for packaging materials to be used can be stored as a set in the same bag, and the contents can be easily mixed even when the contents are mixed and used. It is to provide.

本発明の請求項１に係る発明は、基材フィルム層の一方の面にシーラント層を積層し、他方の面に基材フィルム層より狭い所定幅のガスバリア層を積層した積層材料からなり、一辺に開口辺を有し、他辺がシールされている袋であって、開口辺の所定位置に直角方向に設けたイージーピール性のヒートシール部で隔離された２つの内容物収納部を有し、該内容物収納部の片方が前記積層材料のガスバリア層が積層されている層構成部分で囲まれており、他方が前記積層材料のガスバリア層が積層されていない層構成部分で囲まれていることを特徴とする包装袋である。 The invention according to claim 1 of the present invention comprises a laminated material in which a sealant layer is laminated on one surface of a base film layer, and a gas barrier layer having a predetermined width narrower than that of the base film layer is laminated on the other surface. A bag having an opening side and the other side sealed, and having two contents storage parts separated by an easy peel heat sealing part provided in a direction perpendicular to a predetermined position of the opening side One of the content storage portions is surrounded by a layer constituent portion where the gas barrier layer of the laminated material is laminated, and the other is surrounded by a layer constituent portion where the gas barrier layer of the laminated material is not laminated. This is a packaging bag.

本発明の請求項２に係る発明は、上記請求項１に係る発明において、前記ガスバリア層が水蒸気透過度２０ｇ／ｍ²・２４ｈ以下で、酸素透過度５ｍｌ／ｍ²・２４ｈ・ａｔｍ以下であるバリア性積層フィルムからなることを特徴とする包装袋である。 The invention according to claim 2 of the present invention is the invention according to claim 1, wherein the gas barrier layer has a water vapor permeability of 20 g / m ² · 24 h or less and an oxygen permeability of 5 ml / m ² · 24 h · atm or less. It is a packaging bag characterized by comprising a barrier laminate film.

本発明の請求項３に係る発明は、上記請求項１又は請求項に係る発明において、前記イージーピール性のヒートシール部のシール強度が９０°剥離で２〜１０Ｎ／１５ｍｍ幅であることを特徴とする包装袋である。 The invention according to claim 3 of the present invention is the invention according to claim 1 or claim 2, wherein the easy peel heat seal portion has a seal strength of 2 to 10 N / 15 mm width by 90 ° peeling. It is a packaging bag.

本発明の包装袋は、基材フィルム層の一方の面にシーラント層を積層し、他方の面に基材フィルム層より狭い所定幅のガスバリア層を積層した積層材料からなり、一辺に開口辺を有し、他辺がシールされている袋であって、開口辺の所定位置に直角方向に設けたイージーピール性のヒートシール部で隔離された２つの内容物収納部を有し、該内容物収納部の片方が前記積層材料のガスバリア層が積層されている層構成部分で囲まれており、他方が前記積層材料のガスバリア層が積層されていない層構成部分で囲まれており、前記ガスバリア層が水蒸気透過度２０ｇ／ｍ²・２４ｈ以下で、酸素透過度５ｍｌ／ｍ²・２４ｈ・ａｔｍ以下であるバリア性積層フィルムからなり、前記イージーピール性のヒートシー
ル部のシール強度が９０°剥離で２〜１０Ｎ／１５ｍｍ幅であるので、ガスバリア性の要求レベルの異なる一対の内容物をセットで収納でき、内容物を別別に個包装する場合に比べて包装コストの低減ができ、生産効率も良くなり、収納した一対の内容物を混合して使用する場合でも、開口辺の所定位置に直角方向に設けたイージーピール性のヒートシール部を手で容易に部分的に開封し、混合できるので、混合時に内容物が飛び散ることがなく安全であり、さらにガスバリア層として透明なバリア性積層フィルムを使用すれば、保存時に内容物の変質の有無を視認でき、混合状態なども容易に確認できるなどの種々の利点がある。 The packaging bag of the present invention is made of a laminated material in which a sealant layer is laminated on one surface of a base film layer and a gas barrier layer having a predetermined width narrower than that of the base film layer is laminated on the other surface, and an opening side is formed on one side. A bag that is sealed on the other side, and has two contents storage parts separated by an easy peel heat seal part provided in a direction perpendicular to a predetermined position on the opening side. One side of the storage portion is surrounded by a layer constituent portion where the gas barrier layer of the laminated material is laminated, and the other is surrounded by a layer constituent portion where the gas barrier layer of the laminated material is not laminated, and the gas barrier layer in There follows water vapor permeability of 20g / m ² · 24h, consists barrier laminate film is less than the oxygen permeability of ^{5ml / m 2 · 24h · atm} , sealing strength of the heat seal portion of the easy peeling property is at 90 ° peeling Because it is -10N / 15mm width, it can store a pair of contents with different required levels of gas barrier property as a set, reducing the packaging cost and improving the production efficiency compared to individually packaging the contents separately. Even when a pair of stored contents are mixed and used, the easy peel heat seal part provided in the direction perpendicular to the predetermined position of the opening side can be easily partially opened and mixed by hand. It is safe because the contents do not sometimes scatter, and if a transparent barrier film is used as the gas barrier layer, the contents can be visually checked for deterioration during storage, and the mixed state can be easily confirmed. There are advantages.

本発明の包装袋を実施の形態に沿って、以下に説明する。 The packaging bag of this invention is demonstrated below along embodiment.

図２は本発明の包装袋に使用する一実施形態の積層材料の側断面図であり、積層材料（２０）は、基材フィルム層（２１）の一方の面に接着剤層（２２）を介してシーラント層（２３）を積層し、他方の面に接着剤層（２４）を介して基材フィルム層（２１）より狭い所定幅のガスバリア層（２５）を積層した積層構成からなっている。 FIG. 2 is a side sectional view of a laminated material according to an embodiment used for the packaging bag of the present invention. The laminated material (20) has an adhesive layer (22) on one surface of the base film layer (21). The gas barrier layer (25) having a predetermined width narrower than the base film layer (21) is laminated on the other surface via the adhesive layer (24). .

前記基材フィルム層（２１）に使用されるフィルムは、二軸延伸ポリプロピレンフィルム、二軸延伸ポリエステルフィルム、二軸延伸ナイロンフィルムである。 The film used for the base film layer (21) is a biaxially stretched polypropylene film, a biaxially stretched polyester film, or a biaxially stretched nylon film.

前記接着剤層（２２）、（２４）には、一般的にポリウレタン系接着剤を使用する。通常、水酸基を持った主剤とイソシアネート基を持った硬化剤とを２液混合して使用する２液型が使用される。その積層方法は公知のグラビアコート方式で積層する。塗布量は１〜５ｇ／ｍ²（乾燥状態）が良い。 A polyurethane-based adhesive is generally used for the adhesive layers (22) and (24). Usually, a two-component type is used in which a main component having a hydroxyl group and a curing agent having an isocyanate group are mixed in two components. The lamination is performed by a known gravure coating method. The coating amount is preferably 1 to 5 g / m ² (dry state).

前記シーラント層（２３）は、ポリオレフィン系樹脂単体あるいはポリオレフィン系樹脂に他の樹脂を分散させたポリマーアロイからなっており、厚みは適宜選定する。 The sealant layer (23) is made of a polyolefin resin alone or a polymer alloy in which another resin is dispersed in a polyolefin resin, and the thickness is appropriately selected.

前記ガスバリア層（２５）は、基材フィルム層（２１）より狭い所定幅のバリア性積層フィルムからなっており、水蒸気透過度は２０ｇ／ｍ²・２４ｈ以下であり、酸素透過度は５ｍｌ／ｍ²・２４ｈ・ａｔｍ以下である。バリア性積層フィルムの種類は、透明なものとして、二軸延伸ポリエステルフィルムの片面にポリビニルアルコールと無機層状化合物からなるガスバリア被膜層を積層した積層フィルム、二軸延伸ポリエステルフィルムの片面に酸化珪素若しくは酸化アルミニウムの蒸着薄膜層、水溶性高分子と（ａ）一種以上の金属アルコキシド及びその加水分解物又は（ｂ）塩化錫の少なくとも一方を含むものからなるガスバリア性被膜層を積層した積層フィルムが使用でき、不透明なものとして、アルミニウム箔、アルミニウム蒸着二軸延伸ポリプロピレンフィルム、アルミニウム蒸着二軸延伸ナイロンフィルム、アルミニウム蒸着二軸延伸ポリエステルフィルムなどが使用される。幅は基材フィルム層（２１）の半分程度である。積層方法は前記バリア性積層フィルムを二軸延伸ポリプロピレンフィルム、二軸延伸ナイロンフィルムあるいは二軸延伸ポリエステルフィルムが最外面になるるようにして公知のドライラミネート法で積層する。 The gas barrier layer (25) is made of a barrier laminated film having a predetermined width narrower than that of the base film layer (21). The water vapor permeability is 20 g / m ² · 24 h or less, and the oxygen permeability is 5 ml / m. ² · 24h · atm or less. The type of the barrier laminate film is transparent, a laminate film in which a gas barrier coating layer made of polyvinyl alcohol and an inorganic layered compound is laminated on one side of a biaxially stretched polyester film, and silicon oxide or oxide on one side of a biaxially stretched polyester film. A laminated film in which a vapor-deposited thin film layer of aluminum, a gas-barrier coating layer comprising at least one of (a) one or more metal alkoxides and hydrolysates thereof and (b) tin chloride can be used. As an opaque material, aluminum foil, aluminum vapor-deposited biaxially stretched polypropylene film, aluminum vapor-deposited biaxially-stretched nylon film, aluminum vapor-deposited biaxially-stretched polyester film, and the like are used. The width is about half of the base film layer (21). As the laminating method, the barrier laminate film is laminated by a known dry laminating method so that the biaxially stretched polypropylene film, the biaxially stretched nylon film or the biaxially stretched polyester film is the outermost surface.

図１（ａ）は本発明の包装袋の一実施形態を示す平面図であり、（ｂ）は（ａ）のＡ−Ａ′面の拡大断面説明図であり、包装袋（１）は周囲の３辺にヒートシール部（２、３、４）を有し、残り一辺に開口辺（６）を有しており、さらに開口辺の所定位置に直角方向に設けたイージーピール性のヒートシール部（５）で隔離された内容物収納部（１０、１１）を有している。前記内容物収納部（１０）は前記積層材料（２０）の接着剤層（２４）、ガスバリア層（２５）を積層した層構成部分で囲まれており、内容物収納部（１１）は前記積層材料（２０）の接着剤層（２４）、ガスバリア層（２５）を積層していない層構成部分で囲まれている。 Fig.1 (a) is a top view which shows one Embodiment of the packaging bag of this invention, (b) is an expanded sectional explanatory drawing of the AA 'surface of (a), and a packaging bag (1) is circumference | surroundings. The heat-seal part (2, 3, 4) is provided on the three sides, the open side (6) is provided on the other side, and an easy peel heat seal is provided in a direction perpendicular to the predetermined position of the open side. It has the contents storage part (10, 11) isolated by the part (5). The content storage portion (10) is surrounded by a layer component portion in which an adhesive layer (24) and a gas barrier layer (25) of the laminated material (20) are stacked, and the content storage portion (11) is the stacked layer. The adhesive layer (24) of the material (20) and the gas barrier layer (25) are surrounded by the layer constituent portions that are not laminated.

前記ヒートシール部（３、４）のシーラント層（２３）同士をシールした熱融着部（７、８）のシール強度は９０°剥離で１０Ｎ／１５ｍｍ幅を超えるようにシールされており、ヒートシール部（５）のシーラント層（２３）同士をシールした熱融着部（９）のシール強度は９０°剥離で２〜１０Ｎ／１５ｍｍ幅になるようにシールされているのでイージーピール性を有している。前記熱融着部（９）のシール強度が２Ｎ／１５ｍｍ幅未満の場合は弱すぎて、剥離してしまう危険があり、１０Ｎ／１５ｍｍ幅を超えるとイージーピール性が無くなり良くない。従って、前記ヒートシール部（５）の熱融着部（９）のシール強度が好ましい範囲に設定されているので、例えば内容物収納部（１０、１１）の内容物を混合する場合はヒートシール部（５）の熱融着部（９）を手で部分的に容易に開封して混合することが可能であり、混合時に内容物が包装袋外にこぼれることも無い。 The heat-sealed portions (7, 8) that seal the sealant layers (23) of the heat seal portions (3, 4) are sealed so as to exceed 10 N / 15 mm width by 90 ° peeling. Since the seal strength of the heat-sealed part (9) sealing the sealant layers (23) of the seal part (5) is 90 ° peeled so as to be 2 to 10 N / 15 mm wide, it has an easy peel property. doing. If the sealing strength of the heat-sealed part (9) is less than 2N / 15mm width, it is too weak and there is a risk of peeling, and if it exceeds 10N / 15mm width, the easy peel property is not good. Therefore, since the sealing strength of the heat-sealed portion (9) of the heat seal portion (5) is set in a preferable range, for example, when the contents in the content storage portions (10, 11) are mixed, heat sealing is performed. The heat-sealed part (9) of the part (5) can be easily opened and mixed partially by hand, and the contents do not spill out of the packaging bag during mixing.

本発明の包装袋を、以下に具体的な実施例に従って説明するが、本発明がこれらの実施例に限定されるものではない。 Although the packaging bag of this invention is demonstrated according to a specific Example below, this invention is not limited to these Examples.

基材フィルム層（２１）として、厚さ２０μｍ、幅５００ｍｍの二軸延伸ポリプロピレン（ＯＰＰ）フィルムを使用し、ガスバリア層（２５）として、厚さ１２μｍ、幅２５０ｍｍの二軸延伸ポリエステルフィルムの片面に厚さ５０ｎｍの酸化珪素蒸着薄膜層を積層し、その上にテトラエトキシシラン１０．４ｇに塩酸（０．１Ｎ）を８９．６ｇを加えて３０分間攪拌し、加水分解した固形分３ｗｔ％（ＳｉＯ₂換算）の溶液と、固形分３ｗｔ％のポリビニルアルコール溶液を重量比で６０／４０に混合した混合液を用いた厚さ０．５μｍのガスバリア性被膜層を積層したもので、水蒸気透過度が１．０ｇ／ｍ²・２４で、酸素透過度が０．５ｍｌ／ｍ²・２４ｈ・ａｔｍであるバリア性積層フィルムを使用し、シーラント層（２３）として厚さ５０μｍで、幅５００ｍｍの低密度ポリエチレン樹脂にポリプタジエンを分散させたポリマーアロイ樹脂フィルムを使用し、接着剤層（２２、２４）として２液反応型のポリウレタン系接着剤を使用し、ドライラミネート機で、二軸延伸ポリエステルフィルム（１２μｍ）／酸化珪素蒸着薄膜層（５０ｎｍ）／ガスバリア性被膜層（０．５μｍ）／ポリウレタン系接着剤（乾燥状態塗布量、３ｇ／ｍ²）／ＯＰＰフィルム（２０μｍ）／ポリウレタン系接着剤（乾燥状態塗布量、３ｇ／ｍ²）／ポリマーアロイ樹脂フィルム（５０μｍ）構成の積層材料を作成し、その積層材料を用いて図１（ａ）及び（ｂ）に示す同一形状で、外寸法が１５０×１５０ｍｍで、ヒートシール部（２、３、４）の幅が１５ｍｍで、ヒートシール部（５）の幅が７ｍｍで、内容物収納部（１０、１１）を有する本発明の包装袋を作成した。 A biaxially stretched polypropylene (OPP) film having a thickness of 20 μm and a width of 500 mm is used as the base film layer (21), and a biaxially stretched polyester film having a thickness of 12 μm and a width of 250 mm is used as one side of the gas barrier layer (25). A silicon oxide vapor-deposited thin film layer having a thickness of 50 nm is stacked, 89.6 g of hydrochloric acid (0.1N) is added to 10.4 g of tetraethoxysilane, and the mixture is stirred for 30 minutes, and hydrolyzed solid content 3 wt% (SiO 2 ₂ ) and a gas barrier coating layer having a thickness of 0.5 μm using a mixture of a polyvinyl alcohol solution having a solid content of 3 wt% in a weight ratio of 60/40, and having a water vapor permeability of in 1.0g / m ² · 24, the oxygen permeability using barrier laminate film is ^{0.5ml / m 2 · 24h · atm} , thickness as a sealant layer (23) of A polymer alloy resin film in which polyptadiene is dispersed in a low-density polyethylene resin having a width of 0 mm and a width of 500 mm is used, and a two-component reaction type polyurethane adhesive is used as an adhesive layer (22, 24). , Biaxially stretched polyester film (12 μm) / silicon oxide deposited thin film layer (50 nm) / gas barrier coating layer (0.5 μm) / polyurethane-based adhesive (dried state coating amount, 3 g / m ² ) / OPP film (20 μm) / Polyurethane adhesive (dried state coating amount, 3 g / m ² ) / Polymer alloy resin film (50 μm) laminated material is prepared, and using the laminated material, the same as shown in FIGS. 1 (a) and (b) In shape, the outer dimensions are 150 x 150 mm, the width of the heat seal part (2, 3, 4) is 15 mm, and the width of the heat seal part (5) is 7 m In, it created a packaging bag of the present invention having content storage part (10, 11).

実施例１において、ガスバリア層（２５）として、厚さ１２μｍ、幅２５０ｍｍの二軸延伸ポリエステルフィルムの片面に厚さ５０ｎｍのアルミニウム蒸着薄膜層を積層したもので、水蒸気透過度が０ｇ／ｍ²・２４で、酸素透過度が０／ｍ²・２４ｈ・ａｔｍであるバリア性積層フィルムを使用した以外は、同様にして積層材料及びそれを用いた本発明の包装袋を作成した。 In Example 1, as a gas barrier layer (25), a biaxially stretched polyester film having a thickness of 12 μm and a width of 250 mm was laminated with an aluminum vapor-deposited thin film layer having a thickness of 50 nm on one side, and the water vapor permeability was 0 g / m ^2. 24, a laminated material and a packaging bag of the present invention using the laminated material were prepared in the same manner except that a barrier laminated film having an oxygen permeability of 0 / m ² · 24 h · atm was used.

以下に、本発明の比較用の実施例について説明する。 The comparative examples of the present invention will be described below.

ガスバリア層として、水蒸気透過度が７．０ｇ／ｍ²・２４で、酸素透過度が１５００ｍｌ／ｍ²・２４ｈ・ａｔｍである厚さ２０μｍ、幅２５０ｍｍの二軸延伸ポリプロピレンフィルムを使用した以外は、実施例１と同様にして比較用の積層材料及びそれを用いた比較用の包装袋を作成した。 As the gas barrier layer, a biaxially stretched polypropylene film having a water vapor permeability of 7.0 g / m ² · 24, an oxygen permeability of 1500 ml / m ² · 24 h · atm, a thickness of 20 μm, and a width of 250 mm was used. In the same manner as in Example 1, a comparative laminated material and a comparative packaging bag using the same were prepared.

シーラント層として、厚さ５０μｍ、幅５００ｍｍの直鎖状低密度ポリエチレン樹脂フィルム（東セロ（株）、商品名：ＴＵＸ−ＦＣＳ）を使用した以外は、実施例１と同様にして比較用の積層材料及びそれを用いた比較用の包装袋を作成した。 A comparative laminated material in the same manner as in Example 1 except that a linear low density polyethylene resin film (Tosero Co., Ltd., trade name: TUX-FCS) having a thickness of 50 μm and a width of 500 mm was used as the sealant layer. And a comparative packaging bag using the same.

〈評価〉
実施例１〜２の本発明の包装袋及び実施例３〜４の比較用の包装袋を用いて、内容物収納部（１０）に内容物としてｐＨ１１の染料及びアンモニア含有液２０ｍｌを充填、密封し、内容物収納部（１１）に過酸化水素水含有液２０ｍｌを充填、密封したものを作成した。前記充填密封品を４０℃、７５％ＲＨ環境条件下で６ケ月間保存後に内容物収納部（１０）に充填した液の変色の有無を検査すると共に及び包装袋の２つの内容物収納部間に設けたシーラント層を手で部分開封し、その際の開封性の難易を評価した。その結果を表１に示す。 <Evaluation>
Using the packaging bag of the present invention of Examples 1 and 2 and the packaging bag for comparison of Examples 3 to 4, the content storage unit (10) is filled with 20 ml of pH 11 dye and ammonia-containing liquid as the content and sealed. Then, the content storage part (11) was filled with 20 ml of a hydrogen peroxide solution-containing solution and sealed. The filled and sealed product is inspected for discoloration of the liquid filled in the content storage unit (10) after being stored for 6 months under an environment of 40 ° C. and 75% RH, and between the two content storage units of the packaging bag. The sealant layer provided on was partially opened by hand, and the difficulty of opening at that time was evaluated. The results are shown in Table 1.

表１の結果に示すように、実施例１〜２の本発明の包装袋を使用したものは４０℃、７５％ＲＨ環境条件下で６ケ月間保存後も染料及びアンモニア含有液の変色は無く、袋の２つの内容物収納部間に設けたヒートシール部はイージーピール性を有しているので容易に手で部分開封でき、内容物も容易に混合できた。一方、実施例３の比較用の包装袋を使用したものは保存後に染料及びアンモニア含有液は変色しており、実施例４の比較用の包装袋を使用したものは、袋の２つの内容物収納部間に設けたヒートシール部のシール強度が強くて、開封し難く、内容物の混合は困難であった。

As shown in the results of Table 1, those using the packaging bag of the present invention of Examples 1 and 2 showed no discoloration of the dye and ammonia-containing liquid even after storage for 6 months at 40 ° C. and 75% RH environmental conditions. Since the heat seal part provided between the two contents storage parts of the bag has easy peel properties, it can be easily partially opened by hand, and the contents can be easily mixed. On the other hand, those using the comparative packaging bag of Example 3 have discolored the dye and ammonia-containing liquid after storage, and those using the comparative packaging bag of Example 4 are the two contents of the bag. The heat sealing part provided between the storage parts has a strong sealing strength, is difficult to open, and mixing the contents is difficult.

（ａ）は本発明の包装袋の一実施形態を示す平面図であり、（ｂ）は（ａ）のＡ−Ａ′面の拡大断面説明図である。(A) is a top view which shows one Embodiment of the packaging bag of this invention, (b) is an expanded sectional explanatory drawing of the AA 'surface of (a). 本発明の包装袋に使用される一実施形態の積層材料の側断面図である。It is a sectional side view of the laminated material of one Embodiment used for the packaging bag of this invention.

Explanation of symbols

１…包装袋
２，３，４，５…ヒートシール部
６…開口辺
７，８，９…熱融着部
１０，１１…内容物収納部
２０…積層材料
２１…基材フィルム層
２２…接着剤層
２３…シーラント層
２４…接着剤
２５…ガスバリア層 DESCRIPTION OF SYMBOLS 1 ... Packaging bag 2, 3, 4, 5 ... Heat seal part 6 ... Opening edge 7, 8, 9 ... Heat-fusion part 10, 11 ... Content storage part 20 ... Laminate material 21 ... Base film layer 22 ... Adhesion Agent layer 23 ... Sealant layer 24 ... Adhesive 25 ... Gas barrier layer

Claims

It is made of a laminated material in which a sealant layer is laminated on one side of the base film layer and a gas barrier layer with a predetermined width narrower than that of the base film layer is laminated on the other side. It has an open side on one side and the other side is sealed. A bag having two content storage portions separated by an easy peel heat seal portion provided in a direction perpendicular to a predetermined position of the opening side, and one of the content storage portions is the laminated layer A packaging bag, characterized in that the gas barrier layer of material is surrounded by a layer constituent portion where the gas barrier layer is laminated, and the other is surrounded by a layer constituent portion where the gas barrier layer of the laminated material is not laminated.

The packaging bag according to claim 1, wherein the gas barrier layer comprises a barrier laminated film having a water vapor permeability of 20 g / m ² · 24 h or less and an oxygen permeability of 5 ml / m ² · 24 h · atm or less.

The packaging bag according to claim 1 or 2, wherein a seal strength of the easy peel heat seal part is 2 to 10 N / 15 mm width at 90 ° peeling.