JP4713076B2 - Packaging bag - Google Patents

Packaging bag Download PDF

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JP4713076B2
JP4713076B2 JP2003404274A JP2003404274A JP4713076B2 JP 4713076 B2 JP4713076 B2 JP 4713076B2 JP 2003404274 A JP2003404274 A JP 2003404274A JP 2003404274 A JP2003404274 A JP 2003404274A JP 4713076 B2 JP4713076 B2 JP 4713076B2
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layer
packaging bag
thermal bonding
edge
inner layer
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JP2005162277A (en
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徹 井上
恭一 下村
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Dai Nippon Printing Co Ltd
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Dai Nippon Printing Co Ltd
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Description

本発明は、液状や粘稠状の内容物、たとえば、カレー、シチュー、スープ、ソース類等の食品や調味料を収容する包装袋に関し、さらに詳しくは、上記したような食品を取り出す際に手指等を内容物で汚すことがない包装袋に関するものである。   The present invention relates to a packaging bag for containing liquid or viscous contents, such as curry, stew, soup, sauces, and other foods and seasonings. It is related with the packaging bag which does not contaminate etc. with the contents.

従来から、液状や粘稠状の内容物、たとえば、カレー、シチュー、スープ等の食品やミートソースやデミグラソース等の調味料が三方シールタイプ、四方シールタイプや底部にガセット部を備えたスタンディングタイプの包装袋に直接収容されて販売されている。   Conventionally, liquid and viscous contents, such as curry, stew, soup and other seasonings such as meat sauce and demiglace sauce, are three-side seal type, four-side seal type and standing type with a gusset on the bottom They are sold directly in packaging bags.

上記した包装袋には、I字状やV字状等のノッチを開封開始手段として設けるなり(たとえば、特許文献1参照)、あるいは、前記開封開始手段に連接して開封用切れ目を設けるなり(たとえば、特許文献2)して、包装袋の開封を容易ならしめる手段が施されている。   The above-described packaging bag is provided with notches such as I-shape and V-shape as opening start means (for example, refer to Patent Document 1), or is provided with an opening cut line connected to the opening start means ( For example, Patent Document 2) provides means for facilitating the opening of the packaging bag.

そして、上記のような食品や調味料は、たとえば、加熱加圧殺菌処理が施されて常温で流通され、使用時に、たとえば、熱湯で包装袋ごと加温した後に上記した開封手段で開封して内容物を取り出して使用するように構成されている。しかしながら、上記のような開封手段は、開封予定線となる位置が、当然のことながら熱接着部より内容物側に位置するために、開封予定線に沿って包装袋を開封した際に、開封口に内容物が付着しており、これにより開封時に手指を汚すといった問題や開封時に内容物が垂れて見苦しいといった問題があった。
実用新案登録第3001221号公報 特開平10−167319号公報
The foods and seasonings described above are, for example, subjected to heat and pressure sterilization treatment and distributed at room temperature. When used, for example, the whole packaging bag is heated with hot water, and then opened by the opening means described above. The contents are taken out and used. However, the opening means as described above, when the packaging bag is opened along the planned opening line because the position of the planned opening line is naturally located on the contents side of the thermal bonding portion. There was a problem that the contents adhered to the mouth, which caused the fingers to become dirty at the time of opening and the contents to hang down at the time of opening.
Utility Model Registration No. 3001221 Japanese Patent Laid-Open No. 10-167319

そこで本発明は、上記問題を解決するためになしたものであって、開封時に内容物で手指を汚すことがなく、また、開封時に内容物が垂れることがない包装袋を提供することである。   Accordingly, the present invention has been made in order to solve the above-described problem, and is to provide a packaging bag in which fingers are not soiled with contents when opened, and contents are not dripped when opened. .

本発明者は、上記課題を達成するために、請求項1記載の本発明は、基材層と、熱接着性樹脂からなる内層とを少なくとも備えた矩形状の積層体を、前記内層同士を対向させると共に対向する一組の両端縁に側端縁熱接着部と該側端縁熱接着部に直交する一つの端縁に端縁熱接着部を有する包装袋であって、該包装袋の少なくとも一方の面を構成する前記積層体は前記内層の前記基材層側の面に隣接して未延伸樹脂層が設けられると共に前記内層と前記未延伸樹脂層との間の接着強度は剥離可能に構成され、前記端縁熱接着部はその内縁中央部が内側に突出した突出部を有すると共に、前記端縁熱接着部の内縁から1.0mm以下の間隔を隔てて前記端縁熱接着部に沿って内面側から前記内層を貫通する切込線が前記一方の面を構成する積層体に形成され、さらに前記突出部の前記切込線の内側に前記切込線を挟むへの字状の切込線が設けられていることを特徴とするものである。 In order to achieve the above-mentioned object, the inventor of the present invention described in claim 1 is a rectangular laminate including at least a base material layer and an inner layer made of a heat-adhesive resin. A packaging bag having a side edge thermal bonding portion at a pair of opposite end edges and an edge thermal bonding portion at one edge perpendicular to the side edge thermal bonding portion, The laminate constituting at least one surface is provided with an unstretched resin layer adjacent to the surface of the inner layer on the substrate layer side, and the adhesive strength between the inner layer and the unstretched resin layer is peelable The edge thermal bonding portion has a protruding portion whose inner edge central portion protrudes inward, and the edge thermal bonding portion is spaced 1.0 mm or less from the inner edge of the edge thermal bonding portion. switching write line you through the inner layer from the inner side along the constitutes the one surface laminated Are formed on, and is characterized in that it further shaped score line is provided to the sandwiching said score lines on the inside of the score line of the projection.

また請求項2記載の本発明は、請求項1記載の包装袋において、前記内層と前記未延伸樹脂層とが異樹脂で構成されていることを特徴とするものである。   According to a second aspect of the present invention, in the packaging bag of the first aspect, the inner layer and the unstretched resin layer are made of different resins.

また、請求項3記載の本発明は、請求項1、2のいずれかに記載の包装袋において、前記内層と前記未延伸樹脂層との接着強度が0.2〜5.0N/15mm巾であることを特徴とするものである。   Moreover, this invention of Claim 3 is a packaging bag in any one of Claim 1, 2, The adhesive strength of the said inner layer and the said unstretched resin layer is 0.2-5.0N / 15mm width. It is characterized by being.

本発明の包装袋は、該包装袋の前記端縁熱接着部側の一方の面と他方の面とを手指で摘んで互いに乖離する方向に引っ張ることにより前記端縁熱接着部の近傍に前記端縁熱接着部に沿って設けた切込線から剥離界面が前記一方の面を構成する積層体の前記未延樹脂層と前記内層との間に移り、さらに続けて引っ張ることにより剥離界面が前記端縁熱接着部の外縁に達して包装袋が開封され、容易に内容物を取り出すことができるという効果を奏するものである。また、本発明の包装袋は、該包装袋の前記端縁熱接着部側の一方の面と他方の面とを手指で摘んで互いに乖離する方向に引っ張ることにより内面側から開封する機構のために開封時に内容物で手指を汚すことがなく、また、開封時に内容物が垂れることがないという効果を奏するものである。   In the packaging bag of the present invention, the one side and the other side on the edge thermal bonding part side of the packaging bag are gripped with fingers and pulled in a direction away from each other, in the vicinity of the edge thermal bonding part. From the score line provided along the edge thermal bonding portion, the peeling interface moves between the unextended resin layer and the inner layer of the laminate constituting the one surface, and further pulls to form the peeling interface. The outer edge of the edge thermal bonding portion is reached, the packaging bag is opened, and the contents can be easily taken out. In addition, the packaging bag of the present invention is a mechanism for opening from the inner surface side by picking with fingers one surface and the other surface on the edge thermal bonding portion side of the packaging bag and pulling them away from each other. In addition, the contents are not soiled with the contents when opened, and the contents do not drip when opened.

上記の本発明について、図面等を用いて以下に詳述する。
図1は本発明にかかる包装袋の一実施例を図解的に示す平面図、図2は図1のX−X線の拡大断面図、図3は図1の包装袋の開封方法を図解的に示す図2に対応する図であり、図中の1は包装袋、2は側端縁熱接着部、3は上端縁熱接着部、4は下端縁熱接着部、5は切込線、10,10’は積層体、11は基材層、12は内層、13は未延伸樹脂層、30は突出部をそれぞれ示す。
The above-described present invention will be described in detail below with reference to the drawings.
1 is a plan view schematically showing an embodiment of a packaging bag according to the present invention, FIG. 2 is an enlarged sectional view taken along line XX of FIG. 1, and FIG. 3 is a schematic illustration of a method for opening the packaging bag of FIG. 2 is a figure corresponding to FIG. 2, in which 1 is a packaging bag, 2 is a side edge thermal bonding part, 3 is an upper edge thermal bonding part, 4 is a lower edge thermal bonding part, 5 is a score line, 10 and 10 'are laminates, 11 is a base material layer, 12 is an inner layer, 13 is an unstretched resin layer, and 30 is a protrusion.

図1は本発明にかかる包装袋の一実施例を図解的に示す平面図、図2は図1のX−X線の拡大断面図であって、前記包装袋1は基材層11と熱接着性樹脂からなる内層12とを少なくとも備えた積層体10と、前記基材層11と前記内層12と前記内層12の前記基材層11側の面に隣接して未延伸樹脂層13とを少なくとも備えると共に前記未延伸樹脂層13と前記内層12との間の接着強度が剥離可能に構成された積層体10’とを前記内層12同士を対向させて、対向する一組の側端縁熱接着部2と対向する他の一組の上下端縁熱接着部3、4とで密封した四方シールタイプ包装袋である。そして、前記上端縁熱接着部3はその内縁の中央部が前記下端縁熱接着部4側に突出した突出部30を有すると共に前記端縁熱接着部3の内縁の近傍に該内縁に沿って前記積層体10’の内面側から前記内層を貫通する切込線5(実際には前記未延伸樹脂層13の層中に切込線5の先端が位置する)が形成されている。   FIG. 1 is a plan view schematically showing an embodiment of a packaging bag according to the present invention. FIG. 2 is an enlarged sectional view taken along line XX of FIG. A laminate 10 including at least an inner layer 12 made of an adhesive resin, and the base layer 11, the inner layer 12, and the unstretched resin layer 13 adjacent to the surface of the inner layer 12 on the base layer 11 side. A set of side edge heats which are provided with at least a laminated body 10 ′ having an adhesive strength between the unstretched resin layer 13 and the inner layer 12 so that the inner layer 12 is opposed to each other. It is a four-sided seal type packaging bag sealed with another set of upper and lower edge thermal bonding portions 3 and 4 facing the bonding portion 2. The upper edge thermal bonding portion 3 has a protruding portion 30 whose central edge protrudes toward the lower edge thermal bonding portion 4 side, and along the inner edge in the vicinity of the inner edge of the edge thermal bonding portion 3. A score line 5 (actually the tip of the score line 5 is located in the unstretched resin layer 13) penetrating the inner layer from the inner surface side of the laminate 10 ′ is formed.

次に、包装袋1の使用方法について説明する。まず、包装袋1の前記上端縁熱接着部3側の前記積層体10、10’を手指で摘んで互いに乖離する方向に引っ張ると図3に示すように前記切込線5の突出した中央部から剥離界面が前記積層体10’の前記内層12と前記未延伸樹脂層13の間に移り、さらに続けて引っ張ると剥離界面が前記上端縁熱接着部3の外縁に達して前記包装袋1が開封される。このように本発明の包装袋1は該包装袋を内面側から開封するように構成されているために開封時に内容物で手指を汚すことがなく、また、開封時に内容物が垂れることがない。   Next, the usage method of the packaging bag 1 is demonstrated. First, when the laminates 10 and 10 'on the upper edge thermal bonding part 3 side of the packaging bag 1 are picked with fingers and pulled away from each other, as shown in FIG. The peeling interface moves between the inner layer 12 and the unstretched resin layer 13 of the laminate 10 ′, and when pulled further, the peeling interface reaches the outer edge of the upper edge thermal bonding part 3 and the packaging bag 1 Opened. Thus, since the packaging bag 1 of this invention is comprised so that this packaging bag may be opened from an inner surface side, a finger | toe will not be soiled with the contents at the time of opening, and the contents will not hang down at the time of opening. .

次に、包装袋1を構成する前記積層体10、10’について説明する。
前記積層体10、10’の基材層11としては、包装袋1を構成する基本素材となることから、機械的、物理的、化学的等において優れた性質を有する合成樹脂製フィルムを用いることができ、たとえば、ポリエステル系、ポリアミド系、ポリプロピレン系等の樹脂を用いることができる。また、これらの樹脂を用いたフィルムとしては、一軸方向ないし二軸方向に延伸した延伸フィルムが好適である。この理由としては、通常、前記基材層11には印刷が施されることが多く、印刷適性が求められるからである。また、前記基材層11を構成するフィルムの厚さとしては、基本素材としての強度、剛性などについて必要最低限に保持され得る厚さであればよく、コストなどを勘案して決めればよいが概ね12〜25μm程度である。
Next, the said laminated body 10 and 10 'which comprise the packaging bag 1 are demonstrated.
Since the base material layer 11 of the laminates 10 and 10 'is a basic material constituting the packaging bag 1, a synthetic resin film having excellent properties in mechanical, physical, chemical and the like is used. For example, a resin such as polyester, polyamide, or polypropylene can be used. Moreover, as a film using these resins, a stretched film stretched in a uniaxial direction or a biaxial direction is suitable. This is because usually the substrate layer 11 is often printed and printability is required. Further, the thickness of the film constituting the base material layer 11 may be a thickness that can be held to the minimum necessary for strength, rigidity, etc. as a basic material, and may be determined in consideration of cost and the like. It is approximately 12 to 25 μm.

また、前記積層体10、10’の内層12としては、熱により溶融して相互に溶着し得る熱接着性樹脂から形成された層であればよく、包装袋1に要求される物性により適宜選択して用いればよいものであるが、たとえば、低密度ポリエチレン、中密度ポリエチレン、高密度ポリエチレン、直鎖状(線状)低密度ポリエチレン、ポリプロピレン、エチレン−αオレフィン共重合体、エチレン−プロピレン共重合体、エチレン−酢酸ビニル共重合体、アイオノマー樹脂、エチレンとアクリル酸との酸コポリマー、エチレンとアクリル酸エステルとのエステルコポリマー等で形成することができる。   In addition, the inner layer 12 of the laminates 10 and 10 ′ may be a layer formed from a heat-adhesive resin that can be melted by heat and welded to each other, and is appropriately selected depending on physical properties required for the packaging bag 1. For example, low density polyethylene, medium density polyethylene, high density polyethylene, linear (linear) low density polyethylene, polypropylene, ethylene-α olefin copolymer, ethylene-propylene copolymer It can be formed of a polymer, an ethylene-vinyl acetate copolymer, an ionomer resin, an acid copolymer of ethylene and acrylic acid, an ester copolymer of ethylene and acrylic acid ester, or the like.

また、前記積層体10’の未延伸樹脂層13としては、該層13と前記内層12との間の接着強度が剥離可能な強度、具体的には0.2〜5.0N/15mm巾であることが肝要である。本発明においては、基本的には前記未延伸樹脂層13と前記内層12との接着強度は前記未延伸樹脂層13に用いる樹脂と前記内層12に用いる樹脂とを異樹脂で構成し、異樹脂の接着強度で0.2〜5.0N/15mm巾となる層間強度を得ようとするものであり、前記内層12に用いる樹脂により前記未延伸樹脂層13を形成する樹脂を選択する必要があり、これらの組み合わせを一括して包括的に説明するのは困難であり、例示するとすれば、ポリエチレン層/ポリプロピレン層、ポリエチレン層/酸コポリマー層、ポリエチレン層/エステルコポリマー層、ポリプロピレン層/酸コポリマー層、ポリプロピレン層/エステルコポリマー層、あるいは、異種のポリエチレン同士や異種のポリプロピレン同士の組み合わせ等を挙げることができる。なお、上記した組み合わせは、Tダイ押出機を用いたサンドイッチラミネーション法等の積層方法により達成することができるが、2層共押出法で製造した共押出フィルムであってもよいものである。また、上記した組み合わせは、いずれを前記未延伸樹脂層13としてもよいものである。   Moreover, as the unstretched resin layer 13 of the laminate 10 ′, the adhesive strength between the layer 13 and the inner layer 12 is peelable, specifically 0.2 to 5.0 N / 15 mm width. It is important to be. In the present invention, basically, the adhesive strength between the unstretched resin layer 13 and the inner layer 12 is such that the resin used for the unstretched resin layer 13 and the resin used for the inner layer 12 are made of different resins. It is necessary to select the resin that forms the unstretched resin layer 13 by the resin used for the inner layer 12. It is difficult to comprehensively explain these combinations collectively. For example, polyethylene layer / polypropylene layer, polyethylene layer / acid copolymer layer, polyethylene layer / ester copolymer layer, polypropylene layer / acid copolymer layer , Polypropylene layer / ester copolymer layer, or combinations of different types of polyethylene or different types of polypropylene It can be. The above-described combination can be achieved by a lamination method such as a sandwich lamination method using a T-die extruder, but may be a co-extruded film produced by a two-layer coextrusion method. Further, any of the above combinations may be used as the unstretched resin layer 13.

また、前記積層体10、10’は、前記基材層11の前記内層12側や前記基材層11の表面側に、必要に応じて中間層や外層を設けてもよいものである。前記中間層としては、上記基材層11で説明した合成樹脂製フィルムやこれらにアルミニウムや酸化珪素等の無機物を蒸着したフィルム、あるいは、アルミニウム箔等を用いることができるし、また、前記外層としては、中間層と同様に上記基材層11で説明した合成樹脂製フィルムやこれらにアルミニウムや酸化珪素等の無機物を蒸着したフィルムを用いることができる。要するに包装袋に要求される性能により前記した各層を適宜設ければよいものである。また、各層の積層方法としては、サンドイッチラミネーション法、ドライラミネーション法等の周知の積層方法を適宜用いて積層すればよいものである。   The laminates 10 and 10 ′ may be provided with an intermediate layer or an outer layer on the inner layer 12 side of the base material layer 11 or the surface side of the base material layer 11 as necessary. As the intermediate layer, the synthetic resin film described in the base material layer 11, a film obtained by vapor-depositing an inorganic material such as aluminum or silicon oxide, an aluminum foil, or the like can be used. As the outer layer, As in the intermediate layer, the synthetic resin film described in the base material layer 11 or a film obtained by depositing an inorganic material such as aluminum or silicon oxide on these can be used. In short, the above-described layers may be appropriately provided depending on the performance required for the packaging bag. In addition, as a method of laminating each layer, a known laminating method such as a sandwich lamination method or a dry lamination method may be used as appropriate.

また、前記積層体10’に形成する前記切込線5は、図1に示す形状に切刃が設けられたロータリーダイカッターを用いて形成することができる。そして、本発明においては、前記切込線5と前記上端縁熱接着部3の内縁との間隔は1.0mm以下、好ましくは0.5mm以下、さらに好ましくは、0.2mm以下である。前記間隔が1.0mm超では開封し難くなる虞がある。そのために、前記切込線5は図1においては一条の切込線としたが、製袋時の見当ズレを考慮すると、たとえば、0.5mm間隔で複数条の切込線、具体的には三条の切込線とするのが適当であるし、また、図1のような内縁中央部に突出部30を有する前記上端縁熱接着部3であれば、前記突出部30の前記切込線5を挟むように0.5mmの間隔をあけて略「へ」の字状の切込線を2本設けてもよいものである。   Further, the cut line 5 formed in the laminate 10 ′ can be formed by using a rotary die cutter provided with a cutting edge in the shape shown in FIG. 1. And in this invention, the space | interval of the said cutting line 5 and the inner edge of the said upper end edge heat bonding part 3 is 1.0 mm or less, Preferably it is 0.5 mm or less, More preferably, it is 0.2 mm or less. If the distance exceeds 1.0 mm, it may be difficult to open. For this purpose, the cutting line 5 is a single cutting line in FIG. 1, but considering the misregistration at the time of bag making, for example, multiple cutting lines at intervals of 0.5 mm, specifically, It is appropriate to use a three-threaded cut line, and if the upper edge thermal bonding part 3 has a protruding part 30 at the inner edge central part as shown in FIG. Two cutting lines having a substantially “he” shape may be provided with an interval of 0.5 mm so as to sandwich 5.

次に、本発明について、以下に実施例を挙げてさらに詳しく説明する。なお、今まで図面等の説明で用いた語句および符号を可能な限り使って説明する。   Next, the present invention will be described in more detail with reference to the following examples. It should be noted that the description will be made using as much of the terms and symbols used in the description of the drawings and the like as possible.

[積層体10’の作製]
12μm厚さの二軸延伸ポリエステルフィルム〔東洋メタライジング(株)製:バリアロックス1011HGCR(商品名)〕の酸化アルミニウム蒸着面に130mmピッチで墨色の光電管マークをグラビア印刷して後に、15μm厚さの二軸延伸ナイロンフィルムをドライラミネーション法で積層し、続いて前記二軸延伸ナイロンフィルム面に80μm厚さの共押出フィルム〔線状低密度ポリエチレン層(30μm)/ポリプロピレン層(50μm)〕を前記ポリプロピレン層が表出するようにドライラミネーション法で積層して中間積層体を作製した。その後に、前記中間積層体の共押出フィルム側から図1に示す形状および配置で、その先端が前記共押出フィルムの前記線状低密度ポリエチレン層に位置する切込線5を光電管マークで見当を合わせながらロータリーダイカッターで形成した積層体10’を作製した。なお、前記線状低密度ポリエチレン層が今まで説明した未延伸樹脂層13に相当する。
[積層体10の作製]
12μm厚さの二軸延伸ポリエステルフィルム〔東洋メタライジング(株)製:バリアロックス1011HGCR(商品名)〕の酸化アルミニウム蒸着面に15μm厚さの二軸延伸ナイロンフィルムと80μm厚さの未延伸ポリプロピレンフィルムとを順にドライラミネーション法で積層して積層体10を作製した。
[包装袋の作製]
前記積層体10、10’を製袋機でコンビネーション製袋して側端縁熱接着部2が7mm幅、中央部にV字状突出部を有する上端縁熱接着部3が7mm幅の図1に示す130×170mmの外寸からなる下端縁熱接着部4が形成されていない包装袋を作製した。
[Production of Laminate 10 ′]
12 μm-thick biaxially stretched polyester film [manufactured by Toyo Metallizing Co., Ltd .: Barrier Rocks 1011HGCR (trade name)] was printed on the aluminum oxide deposition surface with a 130 mm pitch gravure printed, A biaxially stretched nylon film is laminated by a dry lamination method, and then a co-extruded film [linear low density polyethylene layer (30 μm) / polypropylene layer (50 μm)] having a thickness of 80 μm is formed on the surface of the biaxially stretched nylon film. An intermediate laminate was produced by laminating by a dry lamination method so that the layers were exposed. After that, in the shape and arrangement shown in FIG. 1 from the coextruded film side of the intermediate laminate, the cut line 5 whose tip is located in the linear low density polyethylene layer of the coextruded film is registered with a photoelectric tube mark. A laminated body 10 ′ formed with a rotary die cutter while being assembled was produced. The linear low density polyethylene layer corresponds to the unstretched resin layer 13 described so far.
[Production of Laminate 10]
12 μm thick biaxially stretched polyester film [Toyo Metallizing Co., Ltd .: Barrier Rocks 1011HGCR (trade name)] has a 15 μm thick biaxially stretched nylon film and an 80 μm thick unstretched polypropylene film on the aluminum oxide deposition surface. Were sequentially laminated by a dry lamination method to produce a laminate 10.
[Production of packaging bags]
The laminated bodies 10 and 10 'are formed by a combination bag making machine, the side edge thermal bonding part 2 is 7 mm wide, and the upper edge thermal bonding part 3 having a V-shaped protrusion at the center is 7 mm wide. The packaging bag which the lower end edge heat bonding part 4 which consists of an outer dimension of 130 * 170 mm shown in FIG.

[積層体10’の作製]
12μm厚さの二軸延伸ポリエステルフィルムのコロナ放電処理面に130mmピッチで墨色の光電管マークをグラビア印刷して後に、7μm厚さのアルミニウム箔をドライラミネーション法で積層し、続いて前記アルミニウム箔面に80μm厚さの共押出フィルム〔線状低密度ポリエチレン層(30μm)/ポリプロピレン層(50μm)〕を前記ポリプロピレン層が表出するようにドライラミネーション法で積層して中間積層体を作製した。その後に、前記中間積層体の共押出フィルム側から図1に示す形状および配置で、その先端が前記共押出フィルムの前記線状低密度ポリエチレン層に位置する切込線5を光電管マークで見当を合わせながらロータリーダイカッターで形成した積層体10’を作製した。なお、前記線状低密度ポリエチレン層が今まで説明した未延伸樹脂層13に相当する。
[積層体10の作製]
12μm厚さの二軸延伸ポリエステルフィルムのコロナ放電処理面に7μm厚さのアルミニウム箔と80μm厚さの未延伸ポリプロピレンフィルムとを順にドライラミネーション法で積層して積層体10を作製した。
[包装袋の作製]
前記積層体10、10’を製袋機でコンビネーション製袋して側端縁熱接着部2が7mm幅、中央部にV字状突出部を有する上端縁熱接着部3が7mm幅の図1に示す130×170mmの外寸からなる下端縁熱接着部4が形成されていない包装袋を作製した。
[Production of Laminate 10 ′]
Gravure printing of black phototube marks at 130 mm pitch on the corona discharge treated surface of 12 μm thick biaxially stretched polyester film, followed by laminating 7 μm thick aluminum foil by dry lamination method, followed by the aluminum foil surface A co-extruded film of 80 μm thickness [linear low density polyethylene layer (30 μm) / polypropylene layer (50 μm)] was laminated by a dry lamination method so that the polypropylene layer was exposed to prepare an intermediate laminate. After that, in the shape and arrangement shown in FIG. 1 from the coextruded film side of the intermediate laminate, the cut line 5 whose tip is located in the linear low density polyethylene layer of the coextruded film is registered with a photoelectric tube mark. A laminated body 10 ′ formed with a rotary die cutter while being assembled was produced. The linear low density polyethylene layer corresponds to the unstretched resin layer 13 described so far.
[Production of Laminate 10]
A laminate 10 was prepared by laminating an aluminum foil having a thickness of 7 μm and an unstretched polypropylene film having a thickness of 80 μm in this order on the corona discharge-treated surface of a 12 μm-thick biaxially stretched polyester film by a dry lamination method.
[Production of packaging bags]
The laminated bodies 10 and 10 'are formed by a combination bag making machine, the side edge thermal bonding part 2 is 7 mm wide, and the upper edge thermal bonding part 3 having a V-shaped protrusion at the center is 7 mm wide. The packaging bag which the lower end edge heat bonding part 4 which consists of an outer dimension of 130 * 170 mm shown in FIG.

[積層体10’の作製]
12μm厚さの二軸延伸ポリエステルフィルム〔東洋メタライジング(株)製:バリアロックス1011HGCR(商品名)〕の酸化アルミニウム蒸着面に130mmピッチで墨色の光電管マークをグラビア印刷して後に、15μm厚さの二軸延伸ナイロンフィルムをドライラミネーション法で積層し、続いて前記二軸延伸ナイロンフィルム面にイソシアネート系アンカー剤を塗布して後に、該アンカー剤塗布面に低密度ポリエチレンを30μm厚さにTダイ押出機で押出して50μm厚さの未延伸ポリプロピレンフィルムをサンドイッチラミネーション法で積層して中間積層体を作製した。その後に、前記中間積層体の前記未延伸ポリプロピレンフィルム側から図1に示す形状および配置で、その先端が前記低密度ポリエチレン層に位置する切込線5を光電管マークで見当を合わせながらロータリーダイカッターで形成した積層体10’を作製した。なお、前記低密度ポリエチレン層が今まで説明した未延伸樹脂層13に相当する。
[積層体10の作製]
12μm厚さの二軸延伸ポリエステルフィルム〔東洋メタライジング(株)製:バリアロックス1011HGCR(商品名)〕の酸化アルミニウム蒸着面に15μm厚さの二軸延伸ナイロンフィルムと80μm厚さの未延伸ポリプロピレンフィルムとを順にドライラミネーション法で積層して積層体10を作製した。
[包装袋の作製]
前記積層体10、10’を製袋機でコンビネーション製袋して側端縁熱接着部2が7mm幅、中央部にV字状突出部を有する上端縁熱接着部3が7mm幅の図1に示す130×170mmの下端縁熱接着部4が形成されていない包装袋を作製した。
[Production of Laminate 10 ′]
12 μm thick biaxially stretched polyester film [manufactured by Toyo Metallizing Co., Ltd .: Barrier Rocks 1011HGCR (trade name)] was printed on the aluminum oxide vapor-deposited surface with a 130 mm pitch gravure printed, and then 15 μm thick A biaxially stretched nylon film is laminated by the dry lamination method, and subsequently an isocyanate anchor agent is applied to the surface of the biaxially stretched nylon film, followed by T-die extrusion of low density polyethylene to a thickness of 30 μm on the anchor agent application surface. A 50 μm thick unstretched polypropylene film was laminated by a sandwich lamination method to produce an intermediate laminate. Thereafter, a rotary die cutter is used while aligning the cut line 5 whose tip is located in the low-density polyethylene layer with the photoelectric tube mark in the shape and arrangement shown in FIG. 1 from the unstretched polypropylene film side of the intermediate laminate. A laminate 10 ′ formed in the above was produced. The low density polyethylene layer corresponds to the unstretched resin layer 13 described so far.
[Production of Laminate 10]
12 μm thick biaxially stretched polyester film [Toyo Metallizing Co., Ltd .: Barrier Rocks 1011HGCR (trade name)] has a 15 μm thick biaxially stretched nylon film and an 80 μm thick unstretched polypropylene film on the aluminum oxide deposition surface. Were sequentially laminated by a dry lamination method to produce a laminate 10.
[Production of packaging bags]
The laminated bodies 10 and 10 'are formed by a combination bag making machine, the side edge thermal bonding part 2 is 7 mm wide, and the upper edge thermal bonding part 3 having a V-shaped protrusion at the center is 7 mm wide. The packaging bag in which the 130 × 170 mm lower end edge thermal bonding portion 4 shown in FIG.

上記で作製した実施例1、2の包装袋に市販のレトルトカレーを開口部から充填して後に開口部を下端縁熱接着部4で密封し、これを120℃で30分間加熱加圧殺菌処理(レトルト殺菌処理)した。また、上記で作製した実施例3の包装袋に水100mlを開口部から充填して後に開口部を下端縁熱接着部4で密封し、95℃で30分間ボイル殺菌した。実施例1〜3のいずれの包装袋についても破袋等することなく殺菌処理することができた。   The packaging bags of Examples 1 and 2 prepared above were filled with a commercially available retort curry from the opening, and then the opening was sealed with the lower edge thermal bonding part 4 and heated and sterilized at 120 ° C. for 30 minutes. (Retort sterilization treatment). Moreover, 100 ml of water was filled in the packaging bag of Example 3 produced above from an opening part, and the opening part was sealed with the lower end edge heat bonding part 4, and boil-sterilized at 95 degreeC for 30 minutes here. Any packaging bag of Examples 1 to 3 could be sterilized without breaking the bag.

また、実施例1〜3の包装袋について、前記上端縁熱接着部3側の前記積層体10、10’を手指で摘んで互いに乖離する方向に引っ張ることにより容易に開封口を形成することができ、内容物を取り出すことができた。この一連の開封作業において、手指を汚すことがなく、また、内容物が垂れることもなかった。   Moreover, about the packaging bag of Examples 1-3, an opening can be easily formed by picking the said laminated bodies 10 and 10 'by the side of the said upper edge thermal bonding part 3 with fingers, and pulling in the direction which mutually separates. I was able to take out the contents. In this series of opening operations, the fingers were not soiled and the contents did not sag.

また、今までの説明においては、2種類の積層体10、10’で構成した四方シールタイプ包装袋を例に挙げて説明してきたが、前記積層体10’のみで構成した包装袋であってもよいし、また、四方シールタイプ包装袋に限ることはなく、本発明の包装袋は、たとえば、三方シールタイプ包装袋やスタンディングタイプ包装袋等の本発明の趣旨を逸脱しない範疇の包装袋はすべて本発明に含まれるものである。   In the description so far, the four-sided seal type packaging bag constituted by two kinds of laminates 10 and 10 'has been described as an example, but the packaging bag is constituted only by the laminate 10'. In addition, the present invention is not limited to a four-side seal type packaging bag, and the packaging bag of the present invention is, for example, a packaging bag in a category that does not depart from the spirit of the present invention, such as a three-side seal type packaging bag or a standing type packaging bag. All are included in the present invention.

本発明にかかる包装袋の一実施例を図解的に示す平面図である。1 is a plan view schematically showing an embodiment of a packaging bag according to the present invention. 図1のX−X線の拡大断面図である。It is an expanded sectional view of the XX line of FIG. 図1の包装袋の開封方法を図解的に示す図2に対応する図である。It is a figure corresponding to FIG. 2 which shows the opening method of the packaging bag of FIG. 1 diagrammatically.

符号の説明Explanation of symbols

1 包装袋
2 側端縁熱接着部
3 上端縁熱接着部
4 下端縁熱接着部
5 切込線
10,10’ 積層体
11 基材層
12 内層
13 未延伸樹脂層
30 突出部

DESCRIPTION OF SYMBOLS 1 Packaging bag 2 Side edge thermal bonding part 3 Upper edge thermal bonding part 4 Lower edge thermal bonding part 5 Cut line 10,10 'Laminated body 11 Base material layer 12 Inner layer 13 Unstretched resin layer 30 Protrusion part

Claims (3)

基材層と、熱接着性樹脂からなる内層とを少なくとも備えた矩形状の積層体を、前記内層同士を対向させると共に対向する一組の両端縁に側端縁熱接着部と該側端縁熱接着部に直交する一つの端縁に端縁熱接着部を有する包装袋であって、該包装袋の少なくとも一方の面を構成する前記積層体は前記内層の前記基材層側の面に隣接して未延伸樹脂層が設けられると共に前記内層と前記未延伸樹脂層との間の接着強度は剥離可能に構成され、前記端縁熱接着部はその内縁中央部が内側に突出した突出部を有すると共に、前記端縁熱接着部の内縁から1.0mm以下の間隔を隔てて前記端縁熱接着部に沿って内面側から前記内層を貫通する切込線が前記一方の面を構成する積層体に形成され、さらに前記突出部の前記切込線の内側に前記切込線を挟むへの字状の切込線が設けられていることを特徴とする包装袋。 A rectangular laminate including at least a base material layer and an inner layer made of a heat-adhesive resin, the inner layer is opposed to each other, and a pair of opposite end edges are provided with a side edge thermal bonding portion and the side edge. A packaging bag having an edge thermal bonding portion at one edge perpendicular to the thermal bonding portion, wherein the laminate constituting at least one surface of the packaging bag is on the surface of the inner layer on the base material layer side An unstretched resin layer is provided adjacently, and the adhesive strength between the inner layer and the unstretched resin layer is configured to be peelable, and the edge thermal bonding portion is a protruding portion whose inner edge central portion protrudes inward configured with the edge thermal bonding portion of the inner edge from at a following interval 1.0mm the edges heat along the adhesive member switching write line you through the inner layer from the inner side surface of the one having are formed in the stacked body, the more the score lines on the inside of the score line of said protrusion Packaging bag characterized in that the shaped score line to free is provided. 前記内層と前記未延伸樹脂層とが異樹脂で構成されていることを特徴とする請求項1記載の包装袋。 The packaging bag according to claim 1, wherein the inner layer and the unstretched resin layer are made of different resins. 前記内層と前記未延伸樹脂層との接着強度が0.2〜5.0N/15mm巾であることを特徴とする請求項1、2のいずれかに記載の包装袋。 The packaging bag according to claim 1, wherein an adhesive strength between the inner layer and the unstretched resin layer is 0.2 to 5.0 N / 15 mm width.
JP2003404274A 2003-12-03 2003-12-03 Packaging bag Expired - Fee Related JP4713076B2 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0721550U (en) * 1993-09-17 1995-04-18 ハウス食品株式会社 Easy-open packaging bag
JPH10264930A (en) * 1997-03-24 1998-10-06 Keihan Cellophane Kk Package having peelable unsealing part
JPH11165765A (en) * 1997-12-02 1999-06-22 Ueno Hiroshi Sealed packaging bag with opening part

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0721550U (en) * 1993-09-17 1995-04-18 ハウス食品株式会社 Easy-open packaging bag
JPH10264930A (en) * 1997-03-24 1998-10-06 Keihan Cellophane Kk Package having peelable unsealing part
JPH11165765A (en) * 1997-12-02 1999-06-22 Ueno Hiroshi Sealed packaging bag with opening part

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