JP2002128097A - Easy-opening packing box - Google Patents
Easy-opening packing boxInfo
- Publication number
- JP2002128097A JP2002128097A JP2000324975A JP2000324975A JP2002128097A JP 2002128097 A JP2002128097 A JP 2002128097A JP 2000324975 A JP2000324975 A JP 2000324975A JP 2000324975 A JP2000324975 A JP 2000324975A JP 2002128097 A JP2002128097 A JP 2002128097A
- Authority
- JP
- Japan
- Prior art keywords
- packaging bag
- heat
- easy
- edge
- sealed
- 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.)
- Pending
Links
- 238000012856 packing Methods 0.000 title abstract 3
- 239000002985 plastic film Substances 0.000 claims abstract description 15
- 229920006255 plastic film Polymers 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 238000004806 packaging method and process Methods 0.000 claims description 68
- 238000000034 method Methods 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000009826 distribution Methods 0.000 abstract description 6
- 238000012858 packaging process Methods 0.000 abstract description 5
- 230000002349 favourable effect Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 49
- 229920005989 resin Polymers 0.000 description 15
- 239000011347 resin Substances 0.000 description 15
- 239000004743 Polypropylene Substances 0.000 description 11
- 229920000139 polyethylene terephthalate Polymers 0.000 description 11
- 239000005020 polyethylene terephthalate Substances 0.000 description 11
- 229910052782 aluminium Inorganic materials 0.000 description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 10
- -1 polypropylene, propylene-ethylene copolymer Polymers 0.000 description 10
- 239000011888 foil Substances 0.000 description 9
- 101100008048 Caenorhabditis elegans cut-4 gene Proteins 0.000 description 8
- 239000004677 Nylon Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 229920001778 nylon Polymers 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 229920000092 linear low density polyethylene Polymers 0.000 description 6
- 239000004707 linear low-density polyethylene Substances 0.000 description 6
- 239000012790 adhesive layer Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 229920005992 thermoplastic resin Polymers 0.000 description 5
- 239000005038 ethylene vinyl acetate Substances 0.000 description 4
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 4
- 231100000241 scar Toxicity 0.000 description 4
- 239000004952 Polyamide Substances 0.000 description 3
- 229920001903 high density polyethylene Polymers 0.000 description 3
- 239000004700 high-density polyethylene Substances 0.000 description 3
- 230000001771 impaired effect Effects 0.000 description 3
- 229920001684 low density polyethylene Polymers 0.000 description 3
- 239000004702 low-density polyethylene Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229920002647 polyamide Polymers 0.000 description 3
- 229920005672 polyolefin resin Polymers 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 208000032544 Cicatrix Diseases 0.000 description 2
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 2
- 235000013361 beverage Nutrition 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000003599 detergent Substances 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 229920006242 ethylene acrylic acid copolymer Polymers 0.000 description 2
- 229920006244 ethylene-ethyl acrylate Polymers 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 229910052809 inorganic oxide Inorganic materials 0.000 description 2
- 229920000554 ionomer Polymers 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 229920001179 medium density polyethylene Polymers 0.000 description 2
- 239000004701 medium-density polyethylene Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920006324 polyoxymethylene Polymers 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000037387 scars Effects 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 1
- 101100008049 Caenorhabditis elegans cut-5 gene Proteins 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000298 Cellophane Polymers 0.000 description 1
- 229920001634 Copolyester Polymers 0.000 description 1
- 239000004713 Cyclic olefin copolymer Substances 0.000 description 1
- 239000004278 EU approved seasoning Substances 0.000 description 1
- 229920010126 Linear Low Density Polyethylene (LLDPE) Polymers 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 239000004687 Nylon copolymer Substances 0.000 description 1
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- 229930182556 Polyacetal Natural products 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920002873 Polyethylenimine Polymers 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical group 0.000 description 1
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 1
- 229920001893 acrylonitrile styrene Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004840 adhesive resin Substances 0.000 description 1
- 229920006223 adhesive resin Polymers 0.000 description 1
- 150000008064 anhydrides Chemical group 0.000 description 1
- 229920006164 aromatic vinyl copolymer Polymers 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000009820 dry lamination Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000005042 ethylene-ethyl acrylate Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 229920001748 polybutylene Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920006149 polyester-amide block copolymer Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920000874 polytetramethylene terephthalate Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- SCUZVMOVTVSBLE-UHFFFAOYSA-N prop-2-enenitrile;styrene Chemical compound C=CC#N.C=CC1=CC=CC=C1 SCUZVMOVTVSBLE-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Bag Frames (AREA)
- Packages (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、袋の外観を損なわ
ずに、手指により容易に開封することのできる、プラス
チックフイルムをヒートシールした易開封性包装袋に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an easy-open packaging bag in which a plastic film is heat-sealed and which can be easily opened by hand without impairing the appearance of the bag.
【０００２】[0002]
【従来の技術】引裂き強度及び突き刺し強度が高く、単
純に外力を加えても破れにくいプラスチックフイルムが
種々開発されたため、プラスチックフイルムをヒートシ
ールした包装袋は、各種食品、飲料、日用品、洗剤、医
薬品等を収容する包装袋として、広く用いられるように
なった。この種の包装袋では、素材の引裂き強度が高い
ために手により開封することが難しく、開封を容易にす
るために、包装袋のヒートシール部にＶ型ノッチやベー
ス型ノッチを設けて、ヒートシール部からの開封を容易
にした包装袋が知られている。このようなノッチは、袋
の強度確保や美観確保の点から、一方の端部につき１つ
のノッチを設ける場合が殆どである。このため、開封開
始部分が限られ、開封位置の選択が任意にできない点
や、ノッチ部で開封に失敗した場合に易開封性の保証が
できない点に問題がある。また、ノッチ加工時に切屑が
包装袋中に混入するおそれがあり、さらに製品の包装工
程や流通段階でノッチ部から破袋したり、ノッチ部でユ
ーザーが手を切る等の欠点があった。2. Description of the Related Art Since various plastic films have been developed which are high in tear strength and piercing strength and which are not easily broken by simply applying an external force, packaging bags heat-sealed with plastic films are used for various foods, beverages, daily necessities, detergents and pharmaceuticals. It has come to be widely used as a packaging bag for accommodating the like. In this type of packaging bag, it is difficult to open the package by hand due to the high tear strength of the material.To facilitate opening, a V-shaped notch or base-type notch is provided in the heat seal portion of the packaging bag. A packaging bag that facilitates opening from a seal portion is known. In most cases, such a notch is provided with one notch at one end from the viewpoint of securing strength and aesthetics of the bag. For this reason, there is a problem in that the opening start portion is limited, and the opening position cannot be arbitrarily selected, and that the easy opening cannot be guaranteed if opening fails at the notch. Further, there is a possibility that chips may be mixed into the packaging bag at the time of the notch processing, and further, there are drawbacks such as breakage of the bag from the notch portion during the packaging process and distribution stage of the product, and cut off of the user's hand at the notch portion.
【０００３】これらの欠点を解消するために、包装袋の
ヒートシール部に砥石等により従来のノッチより小さい
傷痕を多数設けることや（特公昭６１−３９２２８
号）、ヒートシール部の端縁部に長さが０．５〜３ｍｍ
の刃物による切り込みを設けること（特開平７−２５７
５９７号）等が提案されている。しかしながら、砥石等
を用いて傷痕を形成する方法では、肉眼では見えない程
度の小さな傷を形成することが可能であるが、削りカス
が発生しやすく衛生性に欠ける問題がある。また、傷痕
の先端が必ずしも鋭角になるとは限らないため、切り裂
き開始の効果が充分でない。一方、刃物により傷痕や切
り込みを形成する場合には、削りカスの発生は少なく、
切り裂き開始効果が大きい傷を形成することができる
が、その長さが０．５ｍｍ以上の長さとなると、肉眼で
明らかに加工部が見えるため、袋の外観が損なわれると
ともに、加工部のざらつき（引っかかり）が大きいた
め、包装工程や流通段階で切り込みから破袋することが
ある、という問題が生じる。In order to solve these drawbacks, a heat seal portion of a packaging bag is provided with a large number of scars smaller than a conventional notch by a grindstone or the like (Japanese Patent Publication No. 61-39228).
No.), 0.5 to 3 mm in length at the edge of the heat seal part
(See Japanese Patent Laid-Open No. 7-257)
597) has been proposed. However, in the method of forming a scar using a grindstone or the like, it is possible to form a small scratch that is invisible to the naked eye, but there is a problem that shavings are easily generated and lack hygiene. In addition, since the tip of the scar is not always at an acute angle, the effect of starting the tearing is not sufficient. On the other hand, when scars or cuts are formed by the blade, the generation of shavings is small,
Although a wound having a large effect of starting the tearing can be formed, if the length is 0.5 mm or more, the processed portion is clearly visible to the naked eye, and the appearance of the bag is impaired, and the roughness of the processed portion ( The problem is that, in the packaging process and the distribution stage, the bag may be broken from the cut in the cutting process.
【０００４】[0004]
【発明が解決しようとする課題】したがって、本発明は
上記従来技術の問題点を解消し、所望の位置から手指で
容易に開封することができ、包装工程や流通段階での破
袋を防止するとともに、衛生性にも優れ、しかも良好な
外観を有する易開封性包装袋を提供することを目的とす
る。SUMMARY OF THE INVENTION Accordingly, the present invention solves the above-mentioned problems of the prior art, can be easily opened by hand from a desired position, and prevents bag breakage in a packaging process or a distribution stage. In addition, an object of the present invention is to provide an easily-openable packaging bag having excellent hygiene properties and having a good appearance.
【０００５】[0005]
【課題を解決するための手段】本発明では、上記課題を
解決するために、次のような構成をとるものである。 １．プラスチックフイルムをヒートシールした密封包装
袋において、ヒートシール部の端縁に長さが０．０１ｍ
ｍ以上０．５ｍｍ未満の切り込みを設けたことを特徴と
する易開封性包装袋。 ２．切り込みを０．０１〜５．０ｍｍの間隔で多数設け
たことを特徴とする１に記載の易開封性包装袋。 ３．切り込みがヒートシール部の端縁にかかる直線状の
形状を有することを特徴とする１又は２に記載の易開封
性包装袋。 ４．切り込みが鋭角状の先端形状を有することを特徴と
する１〜３のいずれかに記載の易開封性包装袋。 ５．切り込みをヒートシール部の端縁に対して垂直及び
／又は斜めに設けたことを特徴とする１〜４のいずれか
に記載の易開封性包装袋。 ６．プラスチックフイルムをヒートシールした密封包装
袋のヒートシール部の端縁に、刃物により切り込みを多
数設けたことを特徴とする１〜５のいずれかに記載の易
開封性包装袋。 ７．密封後、加圧加熱処理されたことを特徴とする１〜
６のいずれかに記載の易開封性包装袋。In order to solve the above-mentioned problems, the present invention has the following configuration. 1. In a sealed packaging bag in which a plastic film is heat-sealed, the edge of the heat-sealed portion has a length of 0.01 m.
An easily openable packaging bag provided with a notch of not less than m and less than 0.5 mm. 2. 2. The easy-open packaging bag according to 1, wherein a large number of cuts are provided at intervals of 0.01 to 5.0 mm. 3. 3. The easy-open packaging bag according to 1 or 2, wherein the cut has a linear shape extending over the edge of the heat seal portion. 4. 4. The easy-open packaging bag according to any one of 1 to 3, wherein the cut has an acute-angled tip shape. 5. The easy-open packaging bag according to any one of claims 1 to 4, wherein the cuts are provided perpendicularly and / or obliquely to an edge of the heat seal portion. 6. The easy-open packaging bag according to any one of claims 1 to 5, wherein a number of cuts are provided with a blade at the edge of the heat-sealed portion of the sealed packaging bag in which the plastic film is heat-sealed. 7. After sealing, heat-treated under pressure
7. The easily-openable packaging bag according to any one of 6.
【０００６】[0006]
【発明の実施の形態】本発明で包装袋を構成するプラス
チックフイルムとしては、ヒートシール性を有する熱可
塑性樹脂からなる単層フイルム、これらのヒートシール
性を有する熱可塑性樹脂フイルムを袋の内層とし、他の
フイルムを積層した２層以上の層構成を有する積層フイ
ルムを使用することができる。ヒートシール性を有する
熱可塑性樹脂フイルムとしては、例えばポリプロピレ
ン、プロピレン−エチレン共重合体、結晶性ポリブテン
−１、結晶性ポリ４−メチルペンテン−１、低−、中
−、或いは高密度ポリエチレン、線状低密度ポリエチレ
ン、エチレン−酢酸ビニル共重合体（ＥＶＡ）、エチレ
ン−アクリル酸共重合体（ＥＡＡ）、エチレン−アクリ
ル酸エチル共重合体（ＥＥＡ）、イオン架橋オレフィン
共重合体（アイオノマー）等のポリオレフィン類；ポリ
スチレン、スチレン−ブタジエン共重合体等の芳香族ビ
ニル共重合体；ポリ塩化ビニル、塩化ビニリデン樹脂等
のハロゲン化ビニル重合体；アクリロニトリル−スチレ
ン共重合体、アクリロニトリル−スチレン−ブタジエン
共重合体の如きニトリル重合体；ナイロン６、ナイロン
６６、パラまたはメタキシリレンアジパミドの如きポリ
アミド類；ポリエチレンテレフタレート、ポリテトラメ
チレンテレフタレート等のポリエステル類；各種ポリカ
ーボネート；ポリオキシメチレン等のポリアセタール類
等の熱可塑性樹脂を挙げることができる。BEST MODE FOR CARRYING OUT THE INVENTION As a plastic film constituting a packaging bag in the present invention, a single-layer film made of a thermoplastic resin having heat sealing properties, and a thermoplastic resin film having such heat sealing properties as an inner layer of the bag. A laminated film having two or more layers formed by laminating other films can be used. Examples of the thermoplastic resin film having heat sealing properties include polypropylene, propylene-ethylene copolymer, crystalline polybutene-1, crystalline poly-4-methylpentene-1, low-, medium-, or high-density polyethylene, and wire. Low-density polyethylene, ethylene-vinyl acetate copolymer (EVA), ethylene-acrylic acid copolymer (EAA), ethylene-ethyl acrylate copolymer (EEA), ion-crosslinked olefin copolymer (ionomer), etc. Polyolefins; aromatic vinyl copolymers such as polystyrene and styrene-butadiene copolymer; vinyl halide polymers such as polyvinyl chloride and vinylidene chloride resin; acrylonitrile-styrene copolymer; acrylonitrile-styrene-butadiene copolymer Nitrile polymer such as Nylon 6, Niro 66, such polyamides para or meta-xylylene adipamide, polyethylene terephthalate, polyesters polytetramethylene terephthalate; various polycarbonates; may be mentioned thermoplastic resins such as polyacetal such as polyoxymethylene or the like.
【０００７】特に好ましい材料としては、例えば低密度
ポリエチレン、線状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、ポリプロピレン、プロピ
レン−エチレン共重合体、エチレン−酢酸ビニル共重合
体、エチレン系不飽和カルボン酸乃至その無水物でグラ
フト変性されたオレフィン樹脂等のオレフィン系樹脂、
アイオノマー樹脂、比較的低融点乃至低軟化点のポリア
ミド乃至コポリアミド樹脂、ポリエステル乃至コポリエ
ステル樹脂等が使用される。Particularly preferred materials include, for example, low-density polyethylene, linear low-density polyethylene, medium-density polyethylene, high-density polyethylene, polypropylene, propylene-ethylene copolymer, ethylene-vinyl acetate copolymer, and ethylenically unsaturated carboxylic acid. Olefin resins such as olefin resins graft-modified with acids or anhydrides thereof,
An ionomer resin, a polyamide or copolyamide resin or a polyester or copolyester resin having a relatively low melting point or low softening point is used.
【０００８】包装袋を構成するプラスチックフイルムと
して積層フイルムを使用する場合には、上記のヒートシ
ール性を有する熱可塑性樹脂フイルムを袋の内層とし、
必要に応じて接着剤層を介して、他のフイルムを積層し
た積層フイルムを使用する。接着剤層を形成する材料と
しては、ポリエチレンイミン樹脂、アルキルチタネート
樹脂、ポリエステルーイソシアネート系樹脂、ウレタン
樹脂、エポキシ樹脂、ポリエーテル系樹脂、極性基を導
入したオレフィン系樹脂等から選ばれた接着性樹脂を使
用する。When a laminated film is used as the plastic film constituting the packaging bag, the above-mentioned thermoplastic resin film having heat sealing properties is used as the inner layer of the bag,
If necessary, a laminated film in which another film is laminated via an adhesive layer is used. As the material for forming the adhesive layer, an adhesive property selected from polyethyleneimine resin, alkyl titanate resin, polyester-isocyanate resin, urethane resin, epoxy resin, polyether resin, olefin resin having polar groups introduced, etc. Use resin.
【０００９】ヒートシール性樹脂と積層するフイルムと
しては、特に制限はなく、通常包装袋に用いられるもの
はいずれも使用可能である。このようなフイルムに適し
た材料としては、上記のヒートシール性樹脂として使用
される材料はいずれも使用することができ、内層となる
樹脂と同種又は異種の材料を適宜選択する。また、他の
フイルムとしてアルミニウム等の金属箔、紙、セロファ
ン等や、これらの材料と上記のプラスチックフイルムの
１種又は２種以上を貼合せたものを使用することもでき
る。特に、ガスバリヤー性を必要とする内容物の場合に
は、ポリ塩化ビニリデン樹脂、ＥＶＡケン化物、ナイロ
ン又は環状オレフィンコポリマー等の樹脂層、アルミニ
ウムや酸化珪素などの金属酸化物蒸着膜を有する樹脂
層、アルミニウム等の金属箔を含む積層フイルムを使用
することが好ましい。包装袋を構成するフイルムに断熱
性や剛性等を付与するために、各種合成樹脂の発泡体か
らなるフイルムを使用することもでき、また各種合成樹
脂に酸化チタン、炭酸カルシウム、カーボン等の添加剤
を充填したフイルムを使用することもできる。The film laminated with the heat-sealing resin is not particularly limited, and any film usually used for packaging bags can be used. As a material suitable for such a film, any of the above-mentioned materials used as the heat-sealable resin can be used, and a material of the same type or different from the resin used as the inner layer is appropriately selected. As other films, metal foil such as aluminum, paper, cellophane, or the like, or a material obtained by laminating one or two or more of these materials with the above-described plastic film can also be used. In particular, in the case of contents requiring gas barrier properties, a resin layer such as polyvinylidene chloride resin, EVA saponified product, nylon or cyclic olefin copolymer, or a resin layer having a metal oxide deposited film such as aluminum or silicon oxide It is preferable to use a laminated film including a metal foil such as aluminum. Films made of various synthetic resin foams can be used to impart heat insulation and rigidity to the film constituting the packaging bag, and additives such as titanium oxide, calcium carbonate, and carbon can be added to the various synthetic resins. Can be used.
【００１０】本発明の包装袋を構成するのに好適な積層
フイルムの層構成としては、２軸延伸ポリエチレンテレ
フタレート（PET:外層）／未延伸線状低密度ポリエチレ
ン（LLDPE）、２軸延伸ナイロン（外層）／LLDPE（内
層）、２軸延伸PET(外層)／アルミニウム箔（中間層）
／LLDPE（内層）、２軸延伸ナイロン（外層）／アルミ
ニウム箔（中間層）／LLDPE（内層）、２軸延伸PET(外
層)／２軸延伸ナイロン（中間層）／LLDPE（内層）、２
軸延伸PET(外層)／アルミニウム箔（中間層）／２軸延
伸ナイロン（中間層）／LLDPE（内層）等が挙げられ
る。また、加圧加熱処理等の高温処理が必要とされる用
途には、２軸延伸PET(外層)／アルミニウム箔（中間
層）／未延伸ポリプロピレン（PP:内層）、２軸延伸PET
(外層)／２軸延伸ナイロン（中間層）／アルミニウム箔
（中間層）／未延伸PP（内層）、２軸延伸PET(外層)／
未延伸PP（内層）、２軸延伸ナイロン（外層）／未延伸
PP（内層）、２軸延伸ナイロン（外層）／アルミニウム
箔（中間層）／未延伸PP（内層）、無機酸化物蒸着２軸
延伸PET(外層)／未延伸PP（内層）、無機酸化物蒸着２
軸延伸ナイロン（外層）／未延伸PP（内層）等の、内層
に未延伸PPを用いた積層フイルムを用いることができ
る。The layer structure of the laminated film suitable for forming the packaging bag of the present invention is preferably biaxially stretched polyethylene terephthalate (PET: outer layer) / unstretched linear low density polyethylene (LLDPE), biaxially stretched nylon ( Outer layer) / LLDPE (Inner layer), Biaxially stretched PET (Outer layer) / Aluminum foil (Intermediate layer)
/ LLDPE (inner layer), biaxially oriented nylon (outer layer) / aluminum foil (intermediate layer) / LLDPE (inner layer), biaxially oriented PET (outer layer) / biaxially oriented nylon (intermediate layer) / LLDPE (inner layer), 2
Axial stretched PET (outer layer) / aluminum foil (intermediate layer) / biaxially stretched nylon (intermediate layer) / LLDPE (inner layer). For applications requiring high-temperature treatment such as pressure and heat treatment, biaxially stretched PET (outer layer) / aluminum foil (intermediate layer) / unstretched polypropylene (PP: inner layer), biaxially stretched PET
(Outer layer) / Biaxially stretched nylon (Intermediate layer) / Aluminum foil (Intermediate layer) / Unstretched PP (Inner layer), Biaxially stretched PET (Outer layer) /
Unstretched PP (inner layer), biaxially stretched nylon (outer layer) / unstretched
PP (inner layer), biaxially stretched nylon (outer layer) / aluminum foil (intermediate layer) / unstretched PP (inner layer), inorganic oxide deposition Biaxially stretched PET (outer layer) / unstretched PP (inner layer), inorganic oxide deposition 2
A laminated film using unstretched PP for the inner layer such as axially stretched nylon (outer layer) / unstretched PP (inner layer) can be used.
【００１１】これらの積層フイルムの各層間には、上記
の接着性樹脂から選択した接着剤層が設けられる。ま
た、切り込みから開封を開始した後、直線的にフイルム
を引き裂く必要がある場合には、１軸延伸高密度ポリエ
チレン（PE）フイルム又は１軸延伸PPフイルムを、延伸
方向が引き裂き方向と同じ向きになるように、中間層と
して導入してもよい。さらに、カライドスコープ等を用
いたレーザービームにより、外層のポリエステル又はポ
リアミド層に、切り込みから連続して袋を横断するよう
に直線状の弱化加工部を設けてもよい。An adhesive layer selected from the above-mentioned adhesive resins is provided between the layers of these laminated films. If it is necessary to tear the film linearly after opening the incision from the notch, place the uniaxially stretched high-density polyethylene (PE) film or uniaxially stretched PP film in the same direction as the tearing direction. As such, it may be introduced as an intermediate layer. Further, a linear weakened portion may be provided in the outer polyester or polyamide layer by a laser beam using a kaleidoscope or the like so as to cross the bag continuously from the cut.
【００１２】プラスチックフイルムを単層とするか、又
はどのような層構成のものとするかは、包装袋に充填す
る内容物の性状に応じて選択すればよい。プラスチック
フイルムの製造は、キャスト法、Ｔダイ法、カレンダー
法又はインフレーション法等の通常の方法により行うこ
とができる。また、積層フイルムの製造は、あらかじめ
形成したフイルムのドライラミネーション、基体フイル
ムへのコーティング、溶融共押し出し等通常の方法によ
り行うことができる。Whether the plastic film is formed as a single layer or in what kind of layer structure may be selected according to the properties of the contents to be filled in the packaging bag. The production of the plastic film can be performed by a usual method such as a casting method, a T-die method, a calendering method or an inflation method. The production of the laminated film can be carried out by a conventional method such as dry lamination of a previously formed film, coating on a base film, and co-extrusion.
【００１３】本発明では、上記のプラスチックフイルム
をヒートシールすることによって構成した包装袋のヒー
トシール部の端縁に、長さが０．０１ｍｍ以上０．５ｍ
ｍ未満、好ましくは０．０１〜０．１５ｍｍの切り込み
を設けることによって、包装袋にその外観を損わずに易
開封性を付与するものである。特に、上記切り込みを多
数設けることにより、任意の位置から、その外観を損な
わずに、易開封性を付与することができる。切り込みの
長さを０．５ｍｍ以上とした場合には、このような易開
封加工部を設けた箇所のヒートシールの耐久性確保の点
から、ヒートシール部の幅を広くする必要があり、また
易開封加工部の外観も悪くなるとともに、加工部のざら
つきが大きいため、包装工程や流通段階で易開封加工部
から破袋する可能性がある。一方、０．０１ｍｍ以下の
切り込みを設けることは、刃物による機械的な加工限界
を超えるものとなり、加工精度の管理はきわめて困難で
ある。特に、切り込みの長さを０．１５ｍｍ以下とした
場合には、切り込みを目視で確認することが困難とな
り、包装袋の外観を全く損なわないので好ましい。According to the present invention, the length of the heat-sealed portion of the packaging bag formed by heat-sealing the plastic film is 0.01 mm to 0.5 m.
By providing a notch of less than m, preferably 0.01 to 0.15 mm, the packaging bag is provided with easy-openability without impairing its appearance. In particular, by providing a large number of the above-mentioned cuts, easy opening property can be imparted from any position without impairing the appearance. When the length of the cut is 0.5 mm or more, it is necessary to increase the width of the heat seal portion from the viewpoint of ensuring the durability of the heat seal at the location where such an easy-opening portion is provided, and Since the appearance of the easy-opening portion is deteriorated and the roughness of the processed portion is large, there is a possibility that the bag is broken from the easy-opening portion in a packaging process or a distribution stage. On the other hand, providing a notch of 0.01 mm or less exceeds the mechanical processing limit using a blade, and it is extremely difficult to control the processing accuracy. In particular, when the length of the cut is 0.15 mm or less, it is difficult to visually check the cut, and the appearance of the packaging bag is not impaired at all.
【００１４】また、切り込みを多数設ける場合には、隣
接する上記切り込みの間隔は、開封開始時の安定性を確
保するために、０．０１〜５．０ｍｍ、好ましくは０．
０５〜１．０ｍｍの間隔で設けることが望ましい。０．
０１ｍｍ以下の間隔で切り込みを設けることは、刃物に
よる機械的な加工限界を超えるものとなり、製造が困難
である。一方、５．０ｍｍ以上の間隔で切り込みを設け
ると、切り込みが設けられていない部分を指で摘む可能
性が高くなるため、開封性が悪くなる。包装袋の外観の
点からは、開封性が損なわれない範囲で、できるだけ間
隔を大きくすることが好ましい。When a large number of cuts are provided, the interval between the adjacent cuts is preferably 0.01 to 5.0 mm, and more preferably 0.1 to 5.0 mm in order to secure stability at the start of opening.
It is desirable to provide at an interval of 05 to 1.0 mm. 0.
Providing the cuts at an interval of 01 mm or less exceeds the mechanical processing limit of the blade and is difficult to manufacture. On the other hand, if cuts are provided at intervals of 5.0 mm or more, the possibility of picking a portion where the cut is not formed with a finger is increased, and thus the opening property is deteriorated. From the viewpoint of the appearance of the packaging bag, it is preferable to make the interval as large as possible as long as the opening property is not impaired.
【００１５】切り込みを設ける位置は任意に選択するこ
とができ、例えば図１に示したように、包装袋１のヒー
トシール部２の一方の側縁部に部分的に多数の切り込み
４を設けることにより易開封加工部３を形成することが
できる。この例では、易開封加工部３を部分的に拡大し
た図２にみられるように、先端部が鋭角状で直線状の切
り込み４を、ヒートシール部２の端縁５に対して略垂直
に設けたものである。この切り込み４は、図３にみられ
るように、ヒートシール部２の端縁５に対して斜めに設
けるようにしてもよい。この場合には、同じ長さの切り
込みであっても、端縁５から切り込みの先端までの直線
距離が短くなり、切り込みの存在を目視で確認しにくく
するので、良好な包装袋の外観を保持するのに有効であ
る。The positions where the cuts are provided can be arbitrarily selected. For example, as shown in FIG. 1, a plurality of cuts 4 are partially provided at one side edge of the heat seal portion 2 of the packaging bag 1. Thereby, the easily-opened portion 3 can be formed. In this example, as shown in FIG. 2 in which the easy-opening portion 3 is partially enlarged, a straight cut 4 having a sharp end portion is formed substantially perpendicularly to the edge 5 of the heat seal portion 2. It is provided. As shown in FIG. 3, the cuts 4 may be provided obliquely with respect to the edge 5 of the heat seal portion 2. In this case, even if the cuts have the same length, the linear distance from the edge 5 to the tip of the cut becomes short, making it difficult to visually confirm the presence of the cut, so that a good appearance of the packaging bag is maintained. It is effective to do.
【００１６】図５及び図６は、本発明の易開封性包装袋
のヒートシール部２に設ける切り込み４と、ヒートシー
ル部２の端縁５及び端面６との関係を説明する、拡大模
式図である。図５（ａ）は、切り込み４を端面６におい
て、端縁５に対して垂直に、そして、包装袋本体７側に
おいて、端縁５に対して垂直に形成した状態を示す図で
あり、図５（ｂ）は、切り込み４を端面６において、端
縁５に対して垂直に、そして、包装袋本体７側におい
て、端縁５に対して斜めに形成した状態を示す図であ
る。また、 図６（ａ）は、切り込み４を端面６におい
て、端縁５に対して斜めに、そして、包装袋本体７側に
おいて、端縁５に対して垂直に形成した状態を示す図で
あり、図６（ｂ）は、切り込み４を端面６において、端
縁５に対して斜めに、そして、包装袋本体７側におい
て、端縁５に対して斜めに形成した状態を示す図であ
る。FIGS. 5 and 6 are enlarged schematic views for explaining the relationship between the cut 4 provided in the heat seal portion 2 of the easy-open packaging bag of the present invention and the edge 5 and the end surface 6 of the heat seal portion 2. FIG. It is. FIG. 5A is a view showing a state where the cut 4 is formed perpendicular to the edge 5 on the end face 6 and perpendicular to the edge 5 on the side of the packaging bag body 7. FIG. 5B is a view showing a state in which the cut 4 is formed perpendicular to the edge 5 on the end face 6 and obliquely to the edge 5 on the side of the packaging bag body 7. FIG. 6A is a diagram showing a state in which the cut 4 is formed obliquely to the edge 5 on the end face 6 and perpendicular to the edge 5 on the side of the packaging bag body 7. FIG. 6B is a view showing a state in which the cut 4 is formed obliquely with respect to the edge 5 on the end face 6 and obliquely with respect to the edge 5 on the side of the packaging bag body 7.
【００１７】図６（ａ）、（ｂ）に示すように、切り込
み４をヒートシール部２の端面６において、端縁５に対
して斜めに形成した場合には、ブラインド効果により、
切り込みの隙間からの光の通過が少なくなるので、切り
込みの存在を目視で確認しにくくすることができる。特
に、切り込みが目視で確認し易くなりはじめる、０．１
２〜０．１８ｍｍの長さの切り込みを形成する場合に
は、端面６において、端縁５に対して切り込みを斜めに
形成すると、ブラインド効果が有効に得られる。As shown in FIGS. 6 (a) and 6 (b), when the cuts 4 are formed obliquely with respect to the edge 5 at the end face 6 of the heat seal portion 2, the blind effect causes
Since the passage of light from the gap of the cut is reduced, the presence of the cut can be made difficult to visually confirm. In particular, the notch begins to be easily visually confirmed, 0.1
In the case where a notch having a length of 2 to 0.18 mm is formed, if the notch is formed obliquely with respect to the edge 5 on the end face 6, the blind effect can be effectively obtained.
【００１８】切り込み４による易開封加工部３は、上記
した図１乃至図３の包装袋においては、易開封加工部３
をヒートシール部２の側縁部の上方に設けているが、上
記側縁部の下方或いは中間部に設けてもよい。また、図
４にみられるように、ヒートシール部２の側縁部の全長
にわたって形成するようにしてもよい。易開封加工部３
を設けるヒートシール部２は、包装袋１の両側縁部に設
けるようにしてもよく、また側縁部ではなく、包装袋の
上縁部又は下縁部とすることもできる。また、本発明の
包装袋の形状は任意に選択することができ、例えば三方
シールや四方シールの平袋、スタンディングパウチ、ガ
ゼット袋、ピロー袋等とすることができる。In the packaging bag of FIGS. 1 to 3 described above, the easy-opening portion 3 by the cut 4
Is provided above the side edge of the heat seal portion 2, but may be provided below or in the middle of the side edge. Further, as shown in FIG. 4, the heat sealing portion 2 may be formed over the entire length of the side edge portion. Easy opening processing part 3
May be provided on both side edges of the packaging bag 1, and may be provided not at the side edges but at the upper edge or the lower edge of the packaging bag. Further, the shape of the packaging bag of the present invention can be arbitrarily selected, and may be, for example, a three-sided or four-sided sealed flat bag, a standing pouch, a gusset bag, a pillow bag, or the like.
【００１９】包装袋のヒートシール部に切り込みを形成
するには、プラスチックフイルムをヒートシールするこ
とによってあらかじめ製袋した包装袋のヒートシール部
を、鋭利な刃物を使用して加工することが好ましい。図
７は、本発明により包装袋に易開封加工部を形成する工
程を説明する模式図である。この例では、内容物の充填
口１０を除いて三方をヒートシールした包装袋１の束を
土台９、９上に載置し、包装袋１の送り方向に対して略
垂直方向に鋭利刃８を往復させることによって、包装袋
１のヒートシール部２に切り込みによる易開封加工部を
形成するものである。この場合、包装袋１の束を固定
し、鋭利刃８が往復運動をしながら送られるようにして
もよい。往復運動をする鋭利刃８に代えて、回転刃を使
用し間欠的にヒートシール部に接触させるようにして、
切り込みを形成するようにしてもよい。この例のよう
に、鋭利な刃物を用いた加工は、切り込みの先端の曲率
半径が極めて小さい鋭角状の切り込みを加工するのが容
易なため、切り裂き開始効果に優れる切り込みを形成す
るのに好ましい。In order to form a cut in the heat-sealed portion of the packaging bag, it is preferable that the heat-sealed portion of the packaging bag made in advance by heat-sealing the plastic film is processed using a sharp blade. FIG. 7 is a schematic diagram illustrating a process of forming an easily-opened portion on a packaging bag according to the present invention. In this example, a bundle of packaging bags 1 heat-sealed on three sides except for the filling port 10 for the contents is placed on the bases 9, 9, and the sharp blades 8 are formed in a direction substantially perpendicular to the feeding direction of the packaging bags 1. Is reciprocated to form an easy-opening portion by cutting in the heat seal portion 2 of the packaging bag 1. In this case, the bundle of the packaging bags 1 may be fixed, and the sharp blade 8 may be sent while reciprocating. Instead of the reciprocating sharp blade 8, a rotary blade is used to intermittently contact the heat seal portion,
A cut may be formed. As in this example, processing using a sharp blade is preferable for forming a notch excellent in the effect of starting tearing, because it is easy to process an acute notch having a very small radius of curvature at the tip of the notch.
【００２０】[0020]
【実施例】つぎに、実施例により本発明を説明するが、
以下の具体例は本発明を限定するものではない。 （実施例１）厚さ１２μｍの２軸延伸ＰＥＴ（外層）／
ウレタン系接着剤層／厚さ７μｍのアルミニウム箔（中
間層）／ウレタン系接着剤層／厚さ７０μｍの未延伸ブ
ロックＰＰ（内層）からなる積層フイルムを使用し、常
法により袋の両側縁及び底縁を７ｍｍ幅でヒートシール
することにより、縦１６０ｍｍ×横１２０ｍｍの図１に
示す形状の平パウチ１を製造した。つぎに、図７に示す
装置を使用して、この平パウチ１の側縁ヒートシール部
２に、パウチの端縁から内方に向かって端縁に対して略
垂直に、直線状の長さ０．０５ｍｍの切り込み４を０．
０５ｍｍの間隔で１０ｍｍにわたって設けることにより
易開封加工部３を形成した。Next, the present invention will be described with reference to examples.
The following specific examples do not limit the invention. (Example 1) Biaxially stretched PET (outer layer) having a thickness of 12 μm /
Using a laminated film consisting of a urethane-based adhesive layer / a 7-μm-thick aluminum foil (intermediate layer) / a urethane-based adhesive layer / a 70-μm-thick unstretched block PP (inner layer), use both sides of the bag in a conventional manner. The bottom edge was heat-sealed with a width of 7 mm to produce a flat pouch 1 having a length of 160 mm and a width of 120 mm and having the shape shown in FIG. Next, using the apparatus shown in FIG. 7, the side edge heat-sealed portion 2 of the flat pouch 1 has a linear length substantially inward from the edge of the pouch inward to the edge. Insert a notch 4 of 0.05 mm into 0.
The easy-opening processing part 3 was formed by providing over 10 mm at intervals of 05 mm.
【００２１】（実施例２〜２５及び比較例１〜５）ヒー
トシール部２に設ける切り込み４の長さ、間隔及び端面
での切り込み角度［端縁となす角度：図６（ａ）のθ］
を表１に記載のものとしたほかは、実施例１と同様にし
て易開封加工部を有するパウチを製造した。実施例２３
〜２５及び比較例５のパウチでは、オートクレーブを用
いてパウチに１２５℃で３０分間の加圧加熱処理を行っ
た。(Examples 2 to 25 and Comparative Examples 1 to 5) The length, interval, and cut angle at the end face of the cut 4 provided in the heat seal portion 2 [angle formed with the edge: θ in FIG. 6 (a)]
Was prepared in the same manner as in Example 1 except that the pouches shown in Table 1 were used. Example 23
In the pouches of Nos. To 25 and Comparative Example 5, the pouches were subjected to a pressure heating treatment at 125 ° C. for 30 minutes using an autoclave.
【００２２】（評価）上記各例で得られたパウチについ
て、５名のモニターにより易開封加工部の外観、手触り
（ざらつき感）、目視性について評価した結果を表１に
示す。尚、手指での開封性については、全て良好であっ
た。表１において、目視性は５名のモニター中で肉眼に
より易開封加工部が認識できるとした者の人数で表し
た。(Evaluation) Table 1 shows the results of evaluation of the appearance, touch (graininess), and visibility of the easily opened portion of the pouch obtained in each of the above examples by a monitor of five persons. In addition, the openability with fingers was all good. In Table 1, the visibility was represented by the number of persons who were able to recognize the easily-opened portion with the naked eye in five monitors.
【００２３】[0023]
【表１】 [Table 1]
【００２４】[0024]
【発明の効果】本発明の易開封性包装袋は、次のような
顕著な効果を奏する。 （１）易開封加工部が目立たず、包装袋の外観を損ねな
い。 （２）極めて小さい切り込みにより易開封加工部を形成
するために、包装袋のヒートシール幅を狭くできる。 （３）易開封加工部を形成する際に、加工屑が発生せ
ず、衛生的であり、各種食品、調味料、飲料、日用品、
洗剤、医薬品等きわめて広い用途に使用することができ
る。 （４）手指で所望の位置から容易に開封することができ
る。 （５）製袋工程、充填工程や流通段階で、易開封加工部
が引掛り破袋するのを防止することができる。The easily openable packaging bag of the present invention has the following remarkable effects. (1) The easily-opened portion is not noticeable, and does not impair the appearance of the packaging bag. (2) Since the easily-opened portion is formed by an extremely small cut, the width of the heat seal of the packaging bag can be reduced. (3) When forming the easy-opening processing part, processing waste is not generated, it is sanitary, and various foods, seasonings, beverages, daily necessities,
It can be used for extremely wide applications such as detergents and pharmaceuticals. (4) It can be easily opened from a desired position with fingers. (5) In the bag making process, the filling process and the distribution stage, the easily opened portion can be prevented from being caught and broken.
【図１】本発明の易開封性包装袋の１例を示す正面図で
ある。FIG. 1 is a front view showing an example of an easily-openable packaging bag of the present invention.
【図２】図１の包装袋の易開封加工部の部分拡大図であ
る。FIG. 2 is a partially enlarged view of an easy-open processing portion of the packaging bag of FIG.
【図３】本発明の易開封性包装袋の他の例を示す部分拡
大図である。FIG. 3 is a partially enlarged view showing another example of the easily-openable packaging bag of the present invention.
【図４】本発明の易開封性包装袋の他の例を示す正面図
である。FIG. 4 is a front view showing another example of the easily-openable packaging bag of the present invention.
【図５】本発明の易開封性包装袋で、ヒートシール部２
に設ける切り込み４と、ヒートシール部２の端縁５及び
端面６との関係を説明する、拡大模式図である。FIG. 5 is a heat-sealing part 2 of the easily-openable packaging bag of the present invention.
FIG. 4 is an enlarged schematic diagram for explaining a relationship between a notch 4 provided in the heat seal portion 2 and an edge 5 and an end surface 6 of the heat seal portion 2.
【図６】本発明の易開封性包装袋で、ヒートシール部２
に設ける切り込み４と、ヒートシール部２の端縁５及び
端面６との関係を説明する、拡大模式図である。FIG. 6 shows an easily-openable packaging bag according to the present invention, wherein a heat-sealed portion 2 is provided.
FIG. 4 is an enlarged schematic diagram for explaining a relationship between a notch 4 provided in the heat seal portion 2 and an edge 5 and an end surface 6 of the heat seal portion 2.
【図７】包装袋に易開封加工部を形成する工程を説明す
る模式図である。FIG. 7 is a schematic diagram illustrating a process of forming an easily-opened portion on a packaging bag.
１ 包装袋 ２ ヒートシール部 ３ 易開封加工部 ４ 切り込み ５ 端縁 ６ 端面 ７ 包装袋本体 ８ 鋭利刃 ９ 土台 １０ 充填口 DESCRIPTION OF SYMBOLS 1 Packaging bag 2 Heat seal part 3 Easy-opening processing part 4 Cut 5 Edge 6 End face 7 Packaging bag main body 8 Sharp blade 9 Base 10 Filling port
Claims (7)
密封包装袋において、ヒートシール部の端縁に長さが
０．０１ｍｍ以上０．５ｍｍ未満の切り込みを設けたこ
とを特徴とする易開封性包装袋。An easily openable packaging bag wherein a notch having a length of 0.01 mm or more and less than 0.5 mm is provided at an edge of a heat sealed portion in a sealed packaging bag in which a plastic film is heat-sealed.
多数設けたことを特徴とする請求項１に記載の易開封性
包装袋。2. The easy-open packaging bag according to claim 1, wherein a number of cuts are provided at intervals of 0.01 to 5.0 mm.
直線状の形状を有することを特徴とする請求項１又は２
に記載の易開封性包装袋。3. The heat sink according to claim 1, wherein the cut has a linear shape extending over the edge of the heat seal portion.
2. The easily-openable packaging bag according to 1.
を特徴とする請求項１〜３のいずれかに記載の易開封性
包装袋。4. The easy-open packaging bag according to claim 1, wherein the cut has an acute-angled tip shape.
垂直及び／又は斜めに設けたことを特徴とする請求項１
〜４のいずれかに記載の易開封性包装袋。5. The method according to claim 1, wherein the cuts are provided perpendicularly and / or obliquely to the edge of the heat seal portion.
5. The easily-openable packaging bag according to any one of items 1 to 4.
密封包装袋のヒートシール部の端縁に、刃物により切り
込みを多数設けたことを特徴とする請求項１〜５のいず
れかに記載の易開封性包装袋。6. The easy-open packaging according to claim 1, wherein a plurality of cuts are provided at the edges of the heat-sealed portion of the sealed packaging bag obtained by heat-sealing the plastic film. bag.
する請求項１〜６のいずれかに記載の易開封性包装袋。7. The easy-open packaging bag according to claim 1, wherein the packaging bag is subjected to a pressure heating treatment after the sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000324975A JP2002128097A (en) | 2000-10-25 | 2000-10-25 | Easy-opening packing box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000324975A JP2002128097A (en) | 2000-10-25 | 2000-10-25 | Easy-opening packing box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002128097A true JP2002128097A (en) | 2002-05-09 |
Family
ID=18802422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000324975A Pending JP2002128097A (en) | 2000-10-25 | 2000-10-25 | Easy-opening packing box |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002128097A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004155501A (en) * | 2002-10-15 | 2004-06-03 | Nippon Suritto Kogyo Kk | Packaging material and method of manufacturing packaging material, and packaging bag and method of manufacturing packaging bag |
| JP2005132457A (en) * | 2003-10-31 | 2005-05-26 | Takazono Sangyo Co Ltd | Packaging film formation roller, packaging film formation device, and dispensing package bag |
| JP2007269329A (en) * | 2006-03-30 | 2007-10-18 | Hayashikane Sangyo Kk | Packaging bag |
| JP2017206279A (en) * | 2016-05-17 | 2017-11-24 | 日本マタイ株式会社 | Packaging bag and its manufacturing method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6423458U (en) * | 1987-07-30 | 1989-02-08 | ||
| JPH07257597A (en) * | 1994-03-25 | 1995-10-09 | Toppan Printing Co Ltd | Easily-tearable bag |
| JPH0858786A (en) * | 1994-08-15 | 1996-03-05 | Dainippon Printing Co Ltd | Pouch |
| JPH0939986A (en) * | 1995-07-27 | 1997-02-10 | Fujimori Kogyo Kk | Packaging bag with notch for unsealing |
-
2000
- 2000-10-25 JP JP2000324975A patent/JP2002128097A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6423458U (en) * | 1987-07-30 | 1989-02-08 | ||
| JPH07257597A (en) * | 1994-03-25 | 1995-10-09 | Toppan Printing Co Ltd | Easily-tearable bag |
| JPH0858786A (en) * | 1994-08-15 | 1996-03-05 | Dainippon Printing Co Ltd | Pouch |
| JPH0939986A (en) * | 1995-07-27 | 1997-02-10 | Fujimori Kogyo Kk | Packaging bag with notch for unsealing |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004155501A (en) * | 2002-10-15 | 2004-06-03 | Nippon Suritto Kogyo Kk | Packaging material and method of manufacturing packaging material, and packaging bag and method of manufacturing packaging bag |
| JP2005132457A (en) * | 2003-10-31 | 2005-05-26 | Takazono Sangyo Co Ltd | Packaging film formation roller, packaging film formation device, and dispensing package bag |
| JP2007269329A (en) * | 2006-03-30 | 2007-10-18 | Hayashikane Sangyo Kk | Packaging bag |
| JP2017206279A (en) * | 2016-05-17 | 2017-11-24 | 日本マタイ株式会社 | Packaging bag and its manufacturing method |
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