JPH04201867A - Composite packaging material having easy tearing property and method of its manufacture - Google Patents
Composite packaging material having easy tearing property and method of its manufactureInfo
- Publication number
- JPH04201867A JPH04201867A JP2333239A JP33323990A JPH04201867A JP H04201867 A JPH04201867 A JP H04201867A JP 2333239 A JP2333239 A JP 2333239A JP 33323990 A JP33323990 A JP 33323990A JP H04201867 A JPH04201867 A JP H04201867A
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- resin film
- packaging material
- layer
- perforated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000011091 composite packaging material Substances 0.000 title claims description 9
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 238000000034 method Methods 0.000 title abstract description 14
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 48
- 239000000057 synthetic resin Substances 0.000 claims abstract description 48
- 239000000565 sealant Substances 0.000 claims abstract description 23
- 239000010410 layer Substances 0.000 claims description 51
- 239000004840 adhesive resin Substances 0.000 claims description 4
- 229920006223 adhesive resin Polymers 0.000 claims description 4
- 239000002356 single layer Substances 0.000 claims 1
- 239000005022 packaging material Substances 0.000 abstract description 25
- 238000004806 packaging method and process Methods 0.000 abstract description 23
- 230000002093 peripheral effect Effects 0.000 abstract description 14
- 239000000463 material Substances 0.000 abstract description 11
- 239000000853 adhesive Substances 0.000 abstract description 6
- 230000001070 adhesive effect Effects 0.000 abstract description 4
- -1 polyethylene terephthalate Polymers 0.000 description 46
- 239000004698 Polyethylene Substances 0.000 description 20
- 229920000573 polyethylene Polymers 0.000 description 20
- 229920000139 polyethylene terephthalate Polymers 0.000 description 19
- 239000005020 polyethylene terephthalate Substances 0.000 description 19
- 239000011888 foil Substances 0.000 description 10
- 229910052782 aluminium Inorganic materials 0.000 description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 8
- 239000004677 Nylon Substances 0.000 description 7
- 229920001778 nylon Polymers 0.000 description 7
- 239000004743 Polypropylene Substances 0.000 description 6
- 229920001155 polypropylene Polymers 0.000 description 6
- 239000012790 adhesive layer Substances 0.000 description 4
- 238000010030 laminating Methods 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 230000009172 bursting Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229920012753 Ethylene Ionomers Polymers 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 229920006242 ethylene acrylic acid copolymer Polymers 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 229920006244 ethylene-ethyl acrylate Polymers 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Landscapes
- Wrappers (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、易引き裂性包装材料、更に詳しくは。[Detailed description of the invention] (Industrial application field) The present invention relates to easily tearable packaging materials, and more particularly to easily tearable packaging materials.
易開封性を有する包装袋の材料等に用いるのに適した引
き裂き容易な複合包装材料、及び、その製造方法に関す
る。The present invention relates to an easy-to-tear composite packaging material suitable for use as a material for easy-to-open packaging bags, etc., and a method for manufacturing the same.
（従来の技術及び発明が解決しようとする課題）延伸合
成樹脂フィルム、或いは、該フィルムの積層体は包装材
料として多用されており、特に、これより各種の包装袋
が製造されている。しかし。(Prior Art and Problems to be Solved by the Invention) Stretched synthetic resin films or laminates of such films are widely used as packaging materials, and in particular, various packaging bags are manufactured from them. but.
この包装材料から袋の周縁部を熱接着して作った包装袋
を手で引き裂いて開封することは困難である。そのため
、これを手で容易に開封できるように従来から種々の工
夫がなされている。例えば、包装袋のシール部の端部分
に多数のキズを設けたり、■型ノツチやＶ型ノツチの切
り口を設けたり、更には該端部分を山形にカットして開
封の開始部を形成している。It is difficult to manually tear and open a packaging bag made from this packaging material by thermally bonding the periphery of the bag. Therefore, various efforts have been made to make it easier to open the package by hand. For example, many scratches may be made on the end of the sealed portion of the packaging bag, a ■-shaped notch or a V-shaped notch may be provided, or the end may be cut into a chevron shape to form an opening opening part. There is.
しかしながら、これらの開始部は、包装袋のどの位置に
も形成できるものではなく、自らその形成位置の範囲は
限定されるばかりでなく、これら従来の方法では、開封
時に真っ直ぐに引き裂き開封端部を切り落すことは困難
であった。However, these starting parts cannot be formed at any position on the packaging bag, and the range of positions where they can be formed is limited. In addition, in these conventional methods, when the bag is opened, the opening part is torn straight to remove the opening end. It was difficult to cut it off.
本発明は、上述の欠点を改良し、易引き裂性ゝ包装材料
、及び、その製造方法を提供することを目的とする。The present invention aims to improve the above-mentioned drawbacks and provide an easily tearable packaging material and a method for producing the same.
（課題を解決するための手段）
本発明の要旨は、−層以上の合成樹脂フィルムよりなる
基材層と、該基材層の一方の面に形成された熱接着性樹
脂シーラント層よりなる複合包装材料において、前記基
材層のうち少なくとも１層が全面に微細な孔を多数穿設
した合成樹脂フィルムであることを特徴とする易引き裂
性を有する複合包装材料、及び、−層以上の合成樹脂フ
ィルムよりなる基材層と、該基材層の一方の面に形成さ
れた熱接着性樹脂シーラント層よりなる複合包装材料の
製造方法において、前記基材層のうち少なくとも１層の
合成樹脂フィルムを該合成樹脂フィルムの軟化点温度以
下の温度の針の突刺しによって多数の微細な孔を設けた
後、形成することを特徴とする易引き裂性を有する複合
包装材料の製造方法である。(Means for Solving the Problems) The gist of the present invention is to provide a composite material comprising a base material layer made of a -layer or more synthetic resin film, and a heat-adhesive resin sealant layer formed on one surface of the base material layer. In the packaging material, at least one of the base material layers is a synthetic resin film with many fine holes perforated on the entire surface, and a composite packaging material with easy tearability, and - or more layers. A method for producing a composite packaging material comprising a base layer made of a synthetic resin film and a heat-adhesive resin sealant layer formed on one side of the base layer, wherein at least one of the base layers is made of a synthetic resin. A method for producing a composite packaging material having easy tearability, characterized in that the film is formed after a large number of fine holes are formed by pricking the film with a needle at a temperature below the softening point temperature of the synthetic resin film. .
このように全面にわたって微細な孔を多数穿設した合成
樹脂フィルムは、その端縁部のどの位置からも直線状に
容易に引き裂くことができるので、該合成樹脂フィルム
を少なくとも１層とする積層体を作り、この積層体を包
装材料に適用すると、易引き裂性を有する包装材料とす
ることができる。A synthetic resin film with a large number of fine holes perforated over its entire surface can be easily torn in a straight line from any position on its edge, so a laminate with at least one layer of the synthetic resin film can be easily torn from any position along its edge. By making a laminate and applying this laminate to a packaging material, the packaging material can be easily torn.
本発明において、基材層が一層である場合、熱接着性合
成樹脂フィルムよりなるシーラント層の一方の面に合成
樹脂フィルムを有し、該合成樹脂フィルムは全面にわた
って微細な孔を多数穿設したもので、この穿設した合成
樹脂フィルムによって包装材料に引き裂き易さを付与す
る。In the present invention, when the base material layer is one layer, the sealant layer made of a heat-adhesive synthetic resin film has a synthetic resin film on one side, and the synthetic resin film has a large number of fine holes perforated over the entire surface. This perforated synthetic resin film makes the packaging material tearable.
また、基材層が二層以上である場合、熱接着性合成樹脂
フィルムよりなるシーラント層の一方の面に二層以上の
合成樹脂フィルムを積層されており、少なくともその一
層が全面にわたって微細な孔を多数穿設した合成樹脂フ
ィルムである。そして、この穿設合成樹脂フィルムによ
って包装材料に引き裂き易さを付与される。なお、この
場合、穿設合成樹脂フィルムは、いずれの層であっても
よく、また、穿設合成樹脂フィルムが二層以上存在して
もよい。In addition, when the base material layer has two or more layers, two or more synthetic resin films are laminated on one side of the sealant layer made of a heat-adhesive synthetic resin film, and at least one of the layers has fine pores over the entire surface. It is a synthetic resin film with many perforations. The perforated synthetic resin film imparts tearability to the packaging material. In this case, the perforated synthetic resin film may be in any layer, and two or more layers of perforated synthetic resin films may be present.
また、本発明にかかる包装材料の基材層には、上記の穿
設合成樹脂フィルムの他、延伸合成樹脂フィルム或いは
金属箔（例えばアルミ箔）や合成樹脂フィルム（例えば
無延伸フィルム）等を適宜に積層しても良い。しかし、
一方の面は、シーラント層で構成されていることが重要
で、該シーラント層は穿孔処理のないので、これを内側
になるように折曲げて包装袋としたとき、袋内の内容物
が漏洩することがない。In addition to the perforated synthetic resin film described above, the base material layer of the packaging material according to the present invention may include a stretched synthetic resin film, a metal foil (for example, aluminum foil), a synthetic resin film (for example, an unstretched film), etc. as appropriate. It may be laminated. but,
It is important that one side is made of a sealant layer, and since the sealant layer is not perforated, when it is folded inward to form a packaging bag, the contents inside the bag will leak. There's nothing to do.
この包装材料のシーラント層を内側として周縁部を熱融
着して得た包装袋は、その周囲端部に微細な孔の一部分
が存在し、その部分が引き裂き開始点となるため、周囲
端部のどの個所からも引き裂くことができ、しかも直線
状に引き裂くことができる。A packaging bag obtained by heat-sealing the peripheral edge of this packaging material with the sealant layer on the inside has a portion of minute holes at the peripheral edge, and this area becomes the tearing starting point. It can be torn from any part of the throat, and it can be torn in a straight line.
本発明における基材を構成する合成樹脂フィルムとして
は、延伸ポリエステルフィルム（ポリエチレンテレフタ
レートフィルム）、延伸ナイロン、延伸ポリエチレン、
延伸ポリプロピレン、ポリカーボネート、キャストナイ
ロン、キャストサラン等であり、シーラント層としては
、ポリオレフィン系合成樹脂、例えば、無延伸ポリエチ
レン、無延伸ポリプロピレン、エチレン−酢酸ビニル共
重合体、エチレン−アクリル酸共重合体、エチレン−エ
チルアクリレート共重合体、アイオノマー等である。Examples of the synthetic resin film constituting the base material in the present invention include stretched polyester film (polyethylene terephthalate film), stretched nylon, stretched polyethylene,
Stretched polypropylene, polycarbonate, cast nylon, cast saran, etc., and as a sealant layer, polyolefin synthetic resin such as unstretched polyethylene, unstretched polypropylene, ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, These include ethylene-ethyl acrylate copolymer and ionomer.
本発明にかかる包装材料の層構成を示すと次の通りであ
る。The layer structure of the packaging material according to the present invention is as follows.
穿孔延伸ポリエチレンテレフタレート／アルミ箔／穿孔
ナイロン／無延伸ポリプロピレン、穿孔延伸ポリエチレ
ンテレフタレート／穿孔ナイロン／無延伸ポリプロピレ
ン、
穿孔延伸ポリエチレンテレフタレート／ポリエチレン／
アルミ箔／無延伸ポリエチレン、穿孔ナイロン／無延伸
ポリエチレン、
穿孔延伸ポリプロピレン／無延伸ポリエチレン、穿孔ナ
イロン／ポリエチレン／穿孔ポリエチレン／無延伸ポリ
エチレン、
穿孔延伸ポリエチレンテレフタレート／穿孔ポリ塩化ビ
ニリデン／無延伸ポリエチレン、穿孔延伸ポリエチレン
テレフタレート／蒸着ポリエチレンテレフタレート／無
延伸ポリエチレン、穿孔延伸ナイロン／アルミ箔／無延
伸ポリエチレン、
穿孔延伸ポリエチレンテレフタレートｌアルミ箔／穿孔
延伸ポリエチレンテレフタレート／無延伸ポリプロピレ
ン、
なお、上記の構成において、無延伸ポリエチレン又は無
延伸ポリプロピレンがシーラント層であり、その他のフ
ィルムが基材層を構成している。Perforated stretched polyethylene terephthalate/aluminum foil/perforated nylon/unstretched polypropylene, perforated stretched polyethylene terephthalate/perforated nylon/unstretched polypropylene, perforated stretched polyethylene terephthalate/polyethylene/
Aluminum foil / unstretched polyethylene, perforated nylon / unstretched polyethylene, perforated stretched polypropylene / unstretched polyethylene, perforated nylon / polyethylene / perforated polyethylene / unstretched polyethylene, perforated stretched polyethylene terephthalate / perforated polyvinylidene chloride / unstretched polyethylene, perforated stretched polyethylene Polyethylene terephthalate/vapor-deposited polyethylene terephthalate/unstretched polyethylene, perforated stretched nylon/aluminum foil/unstretched polyethylene, perforated stretched polyethylene terephthalate aluminum foil/perforated stretched polyethylene terephthalate/unstretched polypropylene, In addition, in the above configuration, unstretched polyethylene or The unstretched polypropylene is the sealant layer, and the other films are the base layer.
次に本発明にかかる易引き裂き性包装材料の製造方法に
ついて述べる。Next, a method for manufacturing the easily tearable packaging material according to the present invention will be described.
本発明における延伸合成樹脂フィルムに微細な孔を多数
穿設する穿孔処理は、種々の方法で行われる。即ち、レ
ーザービームを照射し穿孔する方法、合成樹脂フィルム
の軟化点以上に加熱した針を突き刺して溶融により孔を
あける方法、ロータリーダイカットに依る方法、表面が
鋸歯鐘状のローラー間を通過させる方法、エンボスロー
ラで加圧加熱するして孔をあける方法、合成樹脂フィル
ムの軟化点以下の温度の針を突き刺して破裂状の孔をあ
ける方法等で行う。この穿孔の形状は、円形、楕円形、
或いはＸ形や木彫の破裂形状等の何れの形状でも良いが
、特に破裂形状が好ましい。孔の寸法は０．１〜２．０
ｍｍが好ましい。また孔間隔としては１．。The perforation process of perforating a large number of fine holes in the stretched synthetic resin film in the present invention can be carried out by various methods. That is, a method in which holes are formed by irradiating a laser beam, a method in which a needle heated above the softening point of the synthetic resin film is pierced and the hole is made by melting, a method in which rotary die cutting is used, and a method in which the film is passed between rollers with a serrated bell-shaped surface. This method is performed by applying pressure and heat with an embossing roller to make holes, or by piercing the synthetic resin film with a needle at a temperature below the softening point to make burst-shaped holes. The shape of this perforation can be circular, oval,
Alternatively, it may have any shape such as an X-shape or a bursting shape of a wooden carving, but a bursting shape is particularly preferred. Hole size is 0.1-2.0
mm is preferred. Also, the hole spacing is 1. .
−１Ｏｍｍの格子状が好ましい。-10mm lattice shape is preferred.
本発明における合成樹脂フィルムの穿孔処理は、表面に
多数の針を植えた穿孔ロールとゴムローラの間を合成樹
脂フィルムを通過させることにより行う。この際、穿孔
ロールの針の温度は、合成樹脂フィルムの軟化点以下の
温度に維持する。The perforation treatment of the synthetic resin film in the present invention is carried out by passing the synthetic resin film between a perforation roll having a large number of needles planted on its surface and a rubber roller. At this time, the temperature of the needle of the perforated roll is maintained at a temperature below the softening point of the synthetic resin film.
この合成樹脂フィルムの軟化点以下の温度の針で合成樹
脂フィルムを穿孔した場合は、針を刺した個所が×形状
式いは本形状の破裂状となる。この穿孔された合成樹脂
フィルムは、破裂形状の孔が全面にわたって形成されて
いるから、該合成樹脂フィルムの周囲端部にも破裂状の
孔にもとずく亀裂が存在し、そのため周囲端部のどの個
所からも直線状に引き裂き易くなる。そして、上記の穿
孔直後は針を刺した個所は盛り上がっているが、この盛
り上がりは巻取り工程で平坦になる。そのため、その後
の工程の印刷工程、積層体製造工程には回答支障がなく
、また印刷インキや接着剤がこの孔から滲み出るような
ことはない。穿孔に用いる針の断面は任意であるが三角
又は四角の角針が好ましい。その太さは、合成樹脂フィ
ルムに接する部分の径がＯ０ｌ鴫φ〜２．ＯＩφ相当で
ある。When a synthetic resin film is perforated with a needle having a temperature below the softening point of the synthetic resin film, the point where the needle is punctured becomes an x-shaped or book-shaped rupture. Since this perforated synthetic resin film has burst-shaped holes formed over the entire surface, cracks based on the burst-shaped holes also exist at the peripheral edge of the synthetic resin film, and therefore, the peripheral edge of the synthetic resin film has cracks based on the burst-shaped holes. It becomes easier to tear in a straight line from any point. Immediately after the above-mentioned puncturing, there is a bulge at the point where the needle is inserted, but this bulge becomes flat during the winding process. Therefore, there is no problem in the subsequent printing process and laminate manufacturing process, and printing ink and adhesive do not ooze out from these holes. The cross-section of the needle used for perforation is arbitrary, but triangular or square needles are preferred. The diameter of the part in contact with the synthetic resin film is 001φ~2. It is equivalent to OIφ.
このようにして得られた穿孔合成樹脂フィルムを少なく
とも一層とし、シーラント層及び他の層との積層に際し
ては、通常の積層手段を適用すれば良い。例えば接着剤
を介したり、溶融ポリエチレンを一層に塗布しながら他
の層を圧着したり、或いは共押出したり等の積層手段に
よって製造する。The perforated synthetic resin film obtained in this manner may be used as at least one layer, and when laminating the sealant layer and other layers, ordinary laminating means may be applied. For example, it is manufactured by laminating means such as using an adhesive, applying one layer of molten polyethylene while pressing another layer, or coextruding.
本発明にかかる包装材料の層構成を図示する。1 illustrates a layer structure of a packaging material according to the present invention.
第１図において、ｌは穿孔延伸ポリエチレンテレフタレ
ートフィルム、２は接着層、３はアルミ箔、４はポリエ
チレンフィルムからなるシーラント層であり、また、第
２図において、ｌは穿孔延伸ポリエチレンテレフタレー
トフィルム、２は接着層、４はポリエチレンフィルムか
らなるシーラント層、５は延伸ポリエチレンテレフタレ
ートフィルムである。In FIG. 1, l is a perforated and stretched polyethylene terephthalate film, 2 is an adhesive layer, 3 is an aluminum foil, and 4 is a sealant layer made of a polyethylene film, and in FIG. 2, l is a perforated and stretched polyethylene terephthalate film, 2 4 is an adhesive layer, 4 is a sealant layer made of polyethylene film, and 5 is a stretched polyethylene terephthalate film.
この包装材料で作った包装袋においても、上記穿孔で生
じた破裂形状や円形の孔が、包装袋の端部にもその全体
にわたって存在している。即ち開封開始点が包装袋の端
部全体にわたって存在しているので、敢えて■型ノツチ
やＶ型ノツチの切り口を設なくとも、この包装袋はどの
位置からも容易に直線状に引き裂いて開封することがで
きる。Even in packaging bags made from this packaging material, burst-shaped or circular holes caused by the above-mentioned perforation are present throughout the edges of the packaging bag. In other words, since the opening point is located across the entire edge of the packaging bag, this packaging bag can be easily torn in a straight line from any position and opened without the need to create a ■-shaped notch or a V-shaped notch. be able to.
次に実施例をもって本発明を具体的に説明する。Next, the present invention will be specifically explained using examples.
実施例１゜
延伸ポリエチレンテレフタレートフィルムを穿孔装置を
用いて穿孔した。Example 1 A stretched polyethylene terephthalate film was perforated using a perforation device.
穿孔装置の穿孔ロールは、巾方向、縦方向（円周方向）
共に２Ｍ間隔で、針密度が２５本／ｃｉｌになるように
、金属ロール表面に木綿針を埋め込んだものである。こ
の木綿針は、尖端から０．８ｍｍ内側の部分の直径が０
．４ｍｍの太さのものであった。ゴムロールは硬度６０
°のゴムで構成されたものである。穿孔ロールとゴムロ
ールとは、穿孔ロールの針の先がゴムロールに０．８１
１ＩＩ１１挿入するように配設した。この穿孔ロールと
ゴムロールとの間を、厚さ１２μの延伸ポリエチレンテ
レフタレートフィルムを、常温で、８０ｍ１分の速度で
通過させ、延伸ポリエチレンテレフタレートフィルムに
穿孔し、その後巻き取った６穿孔後のフィルムは針の刺
さった個所が×形状や本形状に破裂し、多少盛り上がっ
た。この盛り上がりは巻き数工程時によってなくなり、
平坦になった。The perforation roll of the perforation device can be used in both the width direction and the longitudinal direction (circumferential direction).
In both cases, cotton needles were embedded in the surface of the metal roll at 2M intervals so that the needle density was 25 needles/cil. This cotton needle has a diameter of 0.8 mm inside from the tip.
．． It was 4 mm thick. Rubber roll has a hardness of 60
It is made of rubber. The perforated roll and the rubber roll have a needle tip of the perforated roll on the rubber roll of 0.81.
It was arranged so that 1II11 could be inserted. A stretched polyethylene terephthalate film with a thickness of 12 μm was passed between this perforated roll and a rubber roll at room temperature at a speed of 80 m/min, and the stretched polyethylene terephthalate film was perforated. The punctured area burst into an x-shape or book-shape, and was slightly swollen. This swelling disappears after several winding steps,
It became flat.
この穿孔した穿孔延伸ポリエチレンテレフタレートフィ
ルムに、接着層として、厚さ１５μｍのポリエチレンフ
ィルムを積層し、これに厚さ９μのアルミニウム箔を貼
り合わせた。さらに、このアルミニウム箔の上に厚さ５
０μのポリエチレンフィルムをシーラント層として貼り
合わせた。第１図に示す積層体が得られた。A polyethylene film with a thickness of 15 μm was laminated as an adhesive layer on this perforated stretched polyethylene terephthalate film, and an aluminum foil with a thickness of 9 μm was laminated thereon. Furthermore, on top of this aluminum foil, a thickness of 5
A 0μ polyethylene film was laminated as a sealant layer. A laminate shown in FIG. 1 was obtained.
この包装材料のシーラント層を内側として折曲げ周縁部
を熱接着して得た包装袋は、その周囲端面のどの位置か
らも容易に真っ直ぐに引き裂くことができた。A packaging bag obtained by folding the packaging material with the sealant layer inside and thermally bonding the peripheral edge could be easily torn straight from any position on the peripheral end surface.
実施例２
実施例１と同じ処理、操作を行って得た穿孔延伸ポリエ
チレンテレフタレートを中心とし、接着剤を介して一方
の面に厚さ１２μの延伸ポリエチレンテレフタレートフ
ィルムを、他方の面にシーラント層として、厚さ５０μ
のポリエチレンフィルムを貼り合わせた。第２図に示す
積層体が得られた。Example 2 Centering on perforated stretched polyethylene terephthalate obtained by performing the same treatment and operation as in Example 1, a stretched polyethylene terephthalate film with a thickness of 12 μm was attached to one side via an adhesive, and a sealant layer was applied to the other side. , thickness 50μ
A polyethylene film was attached. A laminate shown in FIG. 2 was obtained.
この包装材料のシーラント層を内側として折曲げ周縁部
を熱接着して得た包装袋は、その周囲端面のどの位置か
らも容易に真っ直ぐに引き裂くことができた。A packaging bag obtained by folding the packaging material with the sealant layer inside and thermally bonding the peripheral edge could be easily torn straight from any position on the peripheral end surface.
比較例
厚さ１２μの延伸ポリエチレンテレフタレートを穿孔す
ることなく用いて、実施例１と同様の処理、操作を行っ
て、積層体をつくった。この積層体を用いて包装袋をつ
くった。Comparative Example A laminate was prepared using stretched polyethylene terephthalate having a thickness of 12 μm without perforation and carrying out the same treatments and operations as in Example 1. A packaging bag was made using this laminate.
得られた包装袋は、そのままでは何れの位置からも引き
裂くことは困難であった。The resulting packaging bag was difficult to tear from any position.
（発明の効果）
本発明の方法によって得られた引き裂き容易な包装材料
においては、包装材料を構成する積層体の少なくとも一
層の合成樹脂フィルムに微細な孔を全面にわたって多数
穿設したから、その周囲端部にも孔の部分が存在し、こ
れが引き裂き開始点となるので、周囲端部のどの位置か
らも引き裂くことができ、しかもその引き裂き部は直線
状になる。そして、この包装材料から作った包装袋にお
いても、同様に包装袋の周囲端部の全体にわたって微細
な孔が存在し、そのため、この孔の部分を開封開始点と
して、包装袋の周囲端部のどの位置からも開封すること
ができる。したがって、この包装袋は従来の易開封性包
装袋のように開口部のシール部に開封開始部を設ける必
要がなく、またシール部以外の位置からも開封すること
ができるので、特に、背シール形式の包装袋に有用であ
る。(Effects of the Invention) In the easy-to-tear packaging material obtained by the method of the present invention, a large number of fine holes are perforated over the entire surface of at least one layer of the synthetic resin film of the laminate constituting the packaging material. There is also a hole at the end, which serves as the starting point for tearing, so it can be torn from any position on the peripheral edge, and the tear will be in a straight line. In packaging bags made from this packaging material, there are similarly minute holes throughout the entire peripheral edge of the packaging bag, so these holes are used as opening points at the peripheral edge of the packaging bag. It can be opened from any position. Therefore, unlike conventional easy-to-open packaging bags, this packaging bag does not need to have an opening initiation part in the sealed part of the opening, and can be opened from a position other than the sealed part. Useful for type packaging bags.
第１図は、本発明にかかる易引き裂き性包装材料を構成
する積層体の１例の断面図であり、第２図は、本発明の
他の態様を示した積層体の１例の断面図である。
■・・・穿孔延伸ポリエチレンテレフタレートフィルム
２・・・接着層 ３・・・アルミニウム箔４・・・シ
ーラント層FIG. 1 is a sectional view of an example of a laminate constituting an easily tearable packaging material according to the present invention, and FIG. 2 is a sectional view of an example of a laminate showing another aspect of the present invention. It is. ■...Perforated stretched polyethylene terephthalate film 2...Adhesive layer 3...Aluminum foil 4...Sealant layer
Claims (1)
基材層の一方の面に形成された熱接着性樹脂シーラント
層よりなる複合包装材料において、前記基材層のうち少
なくとも１層が全面に微細な孔を多数穿設した合成樹脂
フィルムであることを特徴とする易引き裂性を有する複
合包装材料。 ２、一層以上の合成樹脂フィルムよりなる基材層と、該
基材層の一方の面に形成された熱接着性樹脂シーラント
層よりなる複合包装材料の製造方法において、前記基材
層のうち少なくとも１層の合成樹脂フィルムを該合成樹
脂フィルムの軟化点温度以下の温度の針の突刺しによっ
て多数の微細な孔を設けた後、形成することを特徴とす
る易引き裂性を有する複合包装材料の製造方法。[Scope of Claims] 1. A composite packaging material comprising a base layer made of one or more synthetic resin films and a heat-adhesive resin sealant layer formed on one surface of the base layer, wherein the base layer A composite packaging material having easy tearability, characterized in that at least one layer thereof is a synthetic resin film with many fine holes perforated on its entire surface. 2. A method for producing a composite packaging material comprising a base layer made of one or more synthetic resin films and a heat-adhesive resin sealant layer formed on one side of the base layer, in which at least one of the base layers A composite packaging material having easy tearability, characterized in that a single layer of synthetic resin film is formed after a large number of fine holes are formed by pricking with a needle at a temperature below the softening point of the synthetic resin film. manufacturing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33323990A JP3174914B2 (en) | 1990-11-29 | 1990-11-29 | Composite packaging material having easy tearability and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33323990A JP3174914B2 (en) | 1990-11-29 | 1990-11-29 | Composite packaging material having easy tearability and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04201867A true JPH04201867A (en) | 1992-07-22 |
| JP3174914B2 JP3174914B2 (en) | 2001-06-11 |
Family
ID=18263882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33323990A Expired - Fee Related JP3174914B2 (en) | 1990-11-29 | 1990-11-29 | Composite packaging material having easy tearability and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3174914B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004345331A (en) * | 2003-03-25 | 2004-12-09 | Du Pont Mitsui Polychem Co Ltd | Longitudinally-uniaxially-stretched and laterally-easily-tearable film and its manufacturing process |
| JP2011042089A (en) * | 2009-08-20 | 2011-03-03 | Snow Brand Milk Prod Co Ltd | Packaging film, filled package, and filling and packaging method |
| CN107697468A (en) * | 2017-11-06 | 2018-02-16 | 富港科技（天津）有限公司 | A kind of dust-proof air ventilation film and preparation method thereof |
-
1990
- 1990-11-29 JP JP33323990A patent/JP3174914B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004345331A (en) * | 2003-03-25 | 2004-12-09 | Du Pont Mitsui Polychem Co Ltd | Longitudinally-uniaxially-stretched and laterally-easily-tearable film and its manufacturing process |
| JP2011042089A (en) * | 2009-08-20 | 2011-03-03 | Snow Brand Milk Prod Co Ltd | Packaging film, filled package, and filling and packaging method |
| CN107697468A (en) * | 2017-11-06 | 2018-02-16 | 富港科技（天津）有限公司 | A kind of dust-proof air ventilation film and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3174914B2 (en) | 2001-06-11 |
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