JP2011051619A - Packaging bag - Google Patents

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JP2011051619A
JP2011051619A JP2009201375A JP2009201375A JP2011051619A JP 2011051619 A JP2011051619 A JP 2011051619A JP 2009201375 A JP2009201375 A JP 2009201375A JP 2009201375 A JP2009201375 A JP 2009201375A JP 2011051619 A JP2011051619 A JP 2011051619A
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packaging bag
layer
resin layer
film
bag
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JP5540608B2 (en
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Kiichiro Hirose
喜一郎 広瀬
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Toppan Inc
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Toppan Printing Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a conductive packaging bag capable of ensuring the antistatic effect and the transparency by a simple sealability-keeping method, allowing a content to be visible, and taking out even the strongly chargeable content without leaving any part of the content when the bag is unsealed to take out the content. <P>SOLUTION: The conductive packaging bag is formed of a laminate consisting of a base layer, a hot-melt resin layer, and a non-hot-melt and antistatic resin layer provided on the hot-melt resin layer with its surface specific resistance being ≤10<SP>8</SP>(Ω/square). The peripheral edge thereof is adhered by the fusion-seal, and a cut or a cutout is formed by the fusion-seal to form an unsealing notch. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、包装袋に関するもので、集積回路等の精密電子部品、鰹節の粉体等の静電気により不具合が発生する製品を包装するための帯電防止性のある包装袋に関するものである。   The present invention relates to a packaging bag, and more particularly to a packaging bag having antistatic properties for packaging a product in which a malfunction occurs due to static electricity such as precision electronic parts such as an integrated circuit, powder of bonito.

電子機器製品の高度化、精密化に伴って、IC、LSI、VLSI等電子部品のより一層の小型化、精細化、軽量化の傾向が著しく進んできている。一方、これらの電子機器製品の製造時、輸送中、開梱時における静電気による不具合が多発している。   With the advancement and refinement of electronic equipment products, the trend toward further miniaturization, refinement, and weight reduction of electronic parts such as IC, LSI, VLSI, etc. has been remarkably advanced. On the other hand, troubles due to static electricity frequently occur during manufacture, transportation, and unpacking of these electronic device products.

内容物を外気や衝撃から保護することと内容物の視認性を確保するという目的から、従来これら製品の包装は、ポリエチレン樹脂、ポリプロピレン樹脂、ポリアミド樹脂、ポリ塩化ビニル樹脂、ポリスチレン樹脂、ポリカーボネート樹脂のような汎用プラスチックからなるフィルムを、単体であるいはラミネートした積層体として、包装用の材料としてたとえば包装袋の形状に製袋して用いていた。   For the purpose of protecting the contents from the outside air and impact and ensuring the visibility of the contents, the packaging of these products has conventionally been made of polyethylene resin, polypropylene resin, polyamide resin, polyvinyl chloride resin, polystyrene resin, polycarbonate resin. A film made of such a general-purpose plastic has been used as a packaging material, for example, in the form of a packaging bag, as a single body or as a laminated body.

しかし、これらのフィルムに使用されているプラスチック材料は通常10の12乗(Ω/□)以上の高い体積固有抵抗をもつため帯電し易く、ゴミ、ほこり等が付着するだけでなく内容物自体も帯電によって包装材に吸着されて開封時に取り出しにくくなるといった不具合が避けられなかった。深刻な場合にはたとえば電子部品の場合には静電気による内容物の破壊が生じることも往々にして見られていた。   However, the plastic materials used in these films usually have a high volume resistivity of 10 12 (Ω / □) or more, so they are easily charged, and not only dust, dust, etc. but also the contents themselves are attached. There was an inevitable problem in that it was adsorbed by the packaging material due to electrification and difficult to take out when opened. In serious cases, for example, in the case of electronic components, it has often been observed that the contents are destroyed by static electricity.

帯電によるこれらの不具合を解消し、事故を防止するための対策として包装材料として使用されるプラスチック材料に導電性を付与する別の材料を添加することがいくつか試みられてきた。   Several attempts have been made to add another material that imparts conductivity to a plastic material used as a packaging material as a measure for solving these problems caused by charging and preventing accidents.

たとえば、導電性カーボンブラック等を分散した樹脂組成物、イオン導電性界面活性剤を添加した樹脂組成物よりなるフィルムを材料とした、パウチやトレー等の包装容器を用いて、内容物を包装することで、帯電を防止して、静電気障害から守ることが行われてきた。   For example, the contents are packaged using a packaging container such as a pouch or a tray made of a film made of a resin composition in which conductive carbon black or the like is dispersed, or a resin composition to which an ionic conductive surfactant is added. Thus, it has been carried out to prevent charging and protect against static electricity failure.

しかし、包装材料に導電性の添加剤を加えた上記材料による包装材で包装しても、界面活性剤のブリードにより導電性の制御が困難であったり、導電性付与が不十分であったりすることが多かった。更に、添加剤自体が着色していたり不透明であったりする場合には、必要な導電性を付与するために必要な量を添加するとフィルムの透明性が低下して内容物の識別が出来なくなるなどの問題点があった。   However, even if the packaging material is packaged with the above-mentioned material added with a conductive additive, it may be difficult to control the conductivity due to the bleeding of the surfactant, or the conductivity may be insufficient. There were many things. Furthermore, if the additive itself is colored or opaque, adding the necessary amount to give the necessary conductivity will reduce the transparency of the film and make it impossible to identify the contents. There was a problem.

特に、導電性カーボンブラック等、金属微粒子、フィラーを添加した樹脂からなる材料を用いた場合、導電材の微粒子化が必要であったり、樹脂中に均一分散させるために、ボールミル、アトライター、ロールミル等の剪断力、混合力の優れた分散装置により、十分時間をかけ二次粒子から一次粒子に分散させる必要があった。   In particular, in the case of using a material made of a resin to which metal fine particles and fillers are added such as conductive carbon black, it is necessary to make the conductive material fine particles or to uniformly disperse the resin in the ball mill, attritor, roll mill. It was necessary to disperse the secondary particles from the primary particles to the primary particles by using a dispersing device having excellent shearing force and mixing force.

そして、このようにして得られた導電塗料は、10の3乗〜10の4乗(Ω/□)の導電性は得られるが、塗料調整に分散装置等により多大な時間を要し、簡単に製造できないばかりでなく、必要な導電性得られる程度の厚みを基材にコーティングし、包装材料として用いると、透明性が著しく低下して視認性すなわち内容物を容易に識別、判断できる性能が劣化してしまう。また、粒子の脱落による汚染の問題も懸念される。   The conductive paint obtained in this way can have a conductivity of 10 3 to 10 4 (Ω / □), but it takes a long time to disperse the paint by a dispersing device, etc. In addition to being able to be manufactured, the substrate is coated with a thickness sufficient to obtain the required conductivity, and when used as a packaging material, the transparency is remarkably reduced and the visibility, that is, the ability to easily identify and judge the contents. It will deteriorate. In addition, there is a concern about the problem of contamination due to particle dropping.

一方、界面活性剤を樹脂中に添加したイオン導電性の材料は、視認性の問題はクリア出来るが導電性付与に限界があり、特にLSI、VLSIなどでは、静電気障害防止のために必要な導電性を付与することが困難であり、包装材料として用いることができない場合がある。   On the other hand, an ion conductive material in which a surfactant is added to a resin can clear the problem of visibility, but there is a limit to imparting conductivity. In particular, in LSI, VLSI, etc., the necessary conductivity for preventing electrostatic failure is required. It may be difficult to impart the properties and may not be used as a packaging material.

さらに、イオン導電性材料として界面活性剤を用いた場合の最大の欠点は、低湿度(20%RH以下)では、ほとんど10の14乗(Ω/□)以上の表面抵抗値となり導電性を向上させる効果がほとんど無くなってしまうことである。   Furthermore, the biggest drawback of using a surfactant as an ion conductive material is that the surface resistance value is almost 10 14 (Ω / □) or more at low humidity (20% RH or less), improving conductivity. The effect of making it almost disappears.

このように、導電性カーボン、金属微粒子、フィラーを樹脂中に添加、練りこんだ樹脂からなる材料では、樹脂中での導電粒子の均一分散性、成膜性、着色による不透明化等の問題があり、また、界面活性剤のイオン導電性材料は、導電性不足、湿度依存性の問題があった。最近は包装材料として、単に、静電気障害防止、帯電防止の要求のみならず、ロボットやセンサーを備えた自動輸送システムや品質管理システムにおいては、内容物の識別が要求される場合が多く、包装材料にも導電性ばかりでなく、透明性という要求物性が必要とされている。   As described above, the material made of a resin in which conductive carbon, metal fine particles, and filler are added and kneaded into the resin has problems such as uniform dispersibility of the conductive particles in the resin, film formability, and opacity due to coloring. In addition, the surfactant ion conductive material has a problem of insufficient conductivity and humidity dependency. Recently, as a packaging material, not only is it required to prevent static electricity failure and antistatic, but automatic transportation systems and quality control systems equipped with robots and sensors often require identification of the contents. In addition, not only the conductivity but also the required physical property of transparency is required.

特許文献1ではこの問題に対して、外層が、透明プラスチック材料の表面抵抗が10の3乗〜10の4乗(Ω/□)である導電層を設けた材料からなり、内層が10の8乗〜10の12乗(Ω/□)の表面抵抗を有する熱接着性材料からなる光線透過率50%以上の(波長550nm)の透明性を付与した積層体を包装材料として用いることが提案されている。   In Patent Document 1, to solve this problem, the outer layer is made of a material provided with a conductive layer whose surface resistance is 10 3 to 10 4 (Ω / □), and the inner layer is 10 8 It is proposed to use as a packaging material a laminate having a light transmittance of 50% or more (wavelength 550 nm) made of a heat-adhesive material having a surface resistance of 10 to 10 12 (Ω / □). ing.

外層に複素環式化合物重合体からなる透明性の高い導電層、内層に摩擦帯電を防ぐ10の7乗〜10の12乗(Ω/□)程度の界面活性剤を練り込みヒートシール性樹脂を設けてなる積層体からなる包装材料は、カーボン練り込みタイプや界面活性剤練り込みタイプでは得られない表面抵抗10の3乗〜10の4乗(Ω/□)で、かつ光線透過率が50%以上の透明性を得ることが出来、内容物の確認も容易に行うことが出来る。   A highly transparent conductive layer made of a heterocyclic compound polymer in the outer layer, and a heat-sealable resin kneaded in the inner layer with a surfactant of about 10 7 to 10 12 (Ω / □) to prevent frictional charging. The packaging material made of the laminated body is provided with a surface resistance of 10 3 to 10 4 (Ω / □) and a light transmittance of 50, which cannot be obtained by a carbon kneading type or a surfactant kneading type. % Transparency can be obtained, and the contents can be easily confirmed.

特許文献1の包装材料では、ピロール、チオフェン等の複素環式化合物重合体を用いることによって、帯電防止性と内容物の視認性という両立の困難だった課題を克服することができたがヒートシールが困難であることによって、包装袋を形成する上でたとえばパウチ状の袋の製袋が困難であるという課題が残った。   In the packaging material of Patent Document 1, by using a heterocyclic compound polymer such as pyrrole or thiophene, it was possible to overcome the problem that it was difficult to achieve both the antistatic property and the visibility of the contents. This makes it difficult to form a pouch-shaped bag, for example, in forming a packaging bag.

特に食品分野などでは、鰹節の粉体等の軽くて帯電しやすい内容物は表面固有抵抗値が高い通常のシーラントでは帯電による袋への付着により、包装袋を開封するときに袋内に残ってしまう比率が高くなりすべてを出し切るのは容易ではない。また、工業製品でも微粒子で静電気を帯びやすく、単価の高い材料でのニーズが見込まれる。さらには内蔵されたICの帯電による破損を防止することも望まれている。   Especially in the food field, light and easily charged contents such as bonito powder remain in the bag when opening the packaging bag due to adhesion to the bag due to electrification of ordinary sealants with high surface resistivity. It is not easy to keep everything up. Also, industrial products are prone to static electricity due to fine particles, and there is a need for materials with high unit prices. It is also desired to prevent damage to the built-in IC due to charging.

帯電防止性の高い塗料を塗布することで、包装袋の表面抵抗値を10の3乗〜10の4乗(Ω/□)程度にすることは可能であるが、表面がヒートシール性のない導電層で覆われているために面々でのヒートシールが不可能であり、超音波などでポイントシールする程度しかできなかったため、容易には製袋することが出来なかった。
あるいは、内容物をカップ状の容器に入れてから蓋を嵌合させてさらにその上から、バリア包装を行うというような二重包装が必要となっていた。
By applying a coating with high antistatic properties, it is possible to make the surface resistance of the packaging bag about 10 3 to 10 4 (Ω / □), but the surface is not heat-sealable. Since it was covered with a conductive layer, heat sealing on each side was impossible, and since only point sealing with ultrasonic waves or the like was possible, bag making could not be easily performed.
Alternatively, double packaging is required in which the contents are placed in a cup-shaped container, the lid is fitted, and then barrier packaging is performed.

特開昭63−218065号公報JP-A-63-218065

本発明ではこのような二重包装なしで帯電防止性と透明性を確保した導電性包装袋を密封性を保持した簡単な方法で形成した包装袋の提供を課題とする。
さらに、本発明では内容物が見えて、帯電性の強い内容物でも開封して取り出すときに包装体に残らずに取り出せる包装袋の提供を課題とする。
An object of the present invention is to provide a packaging bag in which a conductive packaging bag having antistatic properties and transparency secured without such double packaging is formed by a simple method that maintains hermeticity.
Furthermore, an object of the present invention is to provide a packaging bag in which the contents can be seen and even a highly charged content can be taken out without being left on the package when it is opened and taken out.

本発明の請求項1の発明は、基材層と熱溶融樹脂層と熱溶融樹脂層の表面に設けられた、非熱溶融性で表面固有抵抗が10の8乗(Ω/□)以下の静電防止樹脂層からなる積層体からなり、周縁部を溶断シールにより接着させ且つ、溶断シールで切り込み乃至切り欠きを形成して開封用のノッチとしたことを特徴とする包装袋である。   The invention of claim 1 of the present invention is a non-thermomeltable surface resistivity of 10 8 (Ω / □) or less provided on the surface of the base material layer, the hot melt resin layer, and the hot melt resin layer. A packaging bag comprising a laminate comprising an antistatic resin layer, the periphery of which is bonded by a fusing seal, and a notch for opening is formed by forming a cut or notch with the fusing seal.

本発明の請求項2の発明は、静電防止樹脂層が、ポリピロールからなることを特徴とする請求項1に記載の包装袋である。   The invention according to claim 2 of the present invention is the packaging bag according to claim 1, wherein the antistatic resin layer is made of polypyrrole.

本発明の請求項3の発明は、基材層が、バリア層を有することを特徴とする請求項1または2に記載の包装袋である。   The invention according to claim 3 of the present invention is the packaging bag according to claim 1 or 2, wherein the base material layer has a barrier layer.

本発明の請求項4の発明は、バリア層が無機物の透明蒸着層であることを特徴とする請求項3に記載の包装袋である。   A fourth aspect of the present invention is the packaging bag according to the third aspect, wherein the barrier layer is an inorganic transparent deposited layer.

本発明の請求項5の発明は、包装袋が1枚の積層体を折り返して折り返し部以外の周縁部を溶断シールにより接着させた三方シール袋であることを特徴とする請求項1から4のいずれか1項に記載の包装袋である。   The invention according to claim 5 of the present invention is a three-side sealed bag in which the packaging bag is a three-sided sealed bag in which a single laminated body is folded and a peripheral portion other than the folded portion is adhered by a fusing seal. It is a packaging bag given in any 1 paragraph.

本発明の請求項1に係る包装袋によれば、基材層と熱溶融樹脂層と熱溶融樹脂層の表面に設けられた、非熱溶融性で表面固有抵抗が10の8乗(Ω/□)以下の静電防止樹脂層からなる積層体からなり、周縁部を溶断シールにより接着させ且つ、溶断シールで切り込み乃至切り欠きを形成して開封用のノッチとしたことによって、二重包装なしで帯電防止性と透明性を確保した導電性包装袋として密封性を保持した簡単な方法で形成し、内容物が見え、帯電性の強い内容物でも開封して取り出すときに包装体にほとんど残らずに取り出せる包装袋とすることが可能となった。   According to the packaging bag of claim 1 of the present invention, the non-thermomeltable surface specific resistance provided on the surfaces of the base material layer, the hot melt resin layer, and the hot melt resin layer is 10 8 (Ω / □) No double wrapping because it consists of a laminate consisting of the following antistatic resin layers, and the periphery is bonded with a fusing seal, and a notch for opening is formed by forming a cut or notch with the fusing seal. As a conductive packaging bag with antistatic properties and transparency, it is formed by a simple method that keeps hermetically sealed, and the contents can be seen. It has become possible to make a packaging bag that can be taken out without waste.

特許文献1に示されているように、複素環式化合物等からなる透明な表面固有抵抗の低い静電防止樹脂層を熱溶融性樹脂層の表面に形成して内容物が見える包装袋に用いる場合に、これらの静電防止樹脂層は熱溶融性樹脂層に比べてヒートシール適性に劣り通常のシーラントとして用いた場合に面々でのヒートシールができないため簡単に袋状に形成することが困難であった。   As shown in Patent Document 1, a transparent antistatic resin layer made of a heterocyclic compound or the like having a low surface resistivity is formed on the surface of a heat-meltable resin layer and used for a packaging bag in which the contents can be seen. In some cases, these antistatic resin layers are inferior in heat sealability compared to heat-meltable resin layers, and cannot be easily formed into a bag shape because they cannot be heat-sealed when used as normal sealants. Met.

本発明の包装袋によれば、解決策として、溶断シールを用い、切断面のみで接着させることによって、表面にヒートシール性のない包装材料でも断面の溶融接着をさせてシールして、包装袋周辺部のシール全体を溶断シールで行うことで密封性を確保することが可能となった。   According to the packaging bag of the present invention, as a solution, by using a fusing seal and adhering only at the cut surface, a packaging material having no heat sealability is sealed on the surface by melting and bonding the cross section, and the packaging bag It became possible to secure the sealing performance by performing the entire sealing of the peripheral portion with a fusing seal.

本発明の包装袋で採用した溶断シールでは包装材料のエッジとなる断面部分のみで表層と裏層を接着するため、シール面積の大きい通常の面々でのヒートシールに比べて、内容
物充填後のシール時にシール部近傍での内容物の挟み込みが非常に少なく、異物によるシール不良の発生はほぼない。というよりも、異物によるシール不良は判別が容易であり、製造時に不良品の除去が容易で結果的には不良品混入事故が防ぎやすい。シール部は異物がかむとシール出来ず、不良の判断が容易であり、形状的にもシール際に内容物がはさまれても取り出しやすい。
In the fusing seal adopted in the packaging bag of the present invention, the surface layer and the back layer are bonded only at the cross-sectional portion that becomes the edge of the packaging material, so compared to heat sealing on a normal surface with a large seal area, There is very little pinching of the contents in the vicinity of the seal part at the time of sealing, and there is almost no occurrence of seal failure due to foreign matter. Rather, it is easy to determine a seal failure due to foreign matter, and it is easy to remove defective products at the time of manufacture, and as a result, it is easy to prevent accidents involving defective products. When the foreign matter bites the seal portion, it cannot be sealed, and it is easy to judge a defect, and it is easy to take out even if the contents are sandwiched between the shape and the seal.

さらに、包装材料表面の帯電性が低いことによって、袋内面への内容物の付着も少ないので帯電性の強い内容物でも開封して取り出すときに包装体に残らずに取り出すことが出来る。内容物を簡単に残らず取り出すことが出来るので高価な内容物でも無駄にすることがないだけでなく、袋廃棄時の分別においても容易に包装袋のみを分離することが出来るので環境保護の面からも有用である。   Furthermore, since the surface of the packaging material has a low chargeability, there is little adhesion of the contents to the inner surface of the bag, so that even a highly charged content can be removed without leaving the package. Since the contents can be easily removed, not only the expensive contents are not wasted, but also the packaging bags can be easily separated even when the bags are discarded. Is also useful.

本発明の包装袋は、周縁部を溶断シールにより接着させ且つ、溶断シールで切り込み乃至切り欠きを形成して開封用のノッチとしたことによってノッチも含めてすべてのシール、切り込み、切り欠きの形成に溶断シール機構を使うことで簡単で安定した袋形成が可能となった。このとき、シール不良が発生しないように、シールバーの異物付着などないか、自動検知するような仕組みの装置構成とすることがより望ましい。   In the packaging bag of the present invention, all the seals including the notches, notches and notches are formed by bonding the peripheral edge portion with a fusing seal and forming notches or notches with the fusing seal to form notches for opening. By using a fusing seal mechanism, a simple and stable bag can be formed. At this time, it is more desirable that the apparatus has a structure that automatically detects whether there is any foreign matter adhering to the seal bar so as not to cause a seal failure.

本発明の包装袋に用いる静電防止樹脂層の表面固有抵抗は10の8乗(Ω/□)以下で望ましくは10の3乗(Ω/□)から10の6乗(Ω/□)である。   The surface resistivity of the antistatic resin layer used in the packaging bag of the present invention is 10 8 (Ω / □) or less, preferably 10 3 (Ω / □) to 10 6 (Ω / □). is there.

本発明の請求項2に係る包装袋によれば、静電防止樹脂層が、ポリピロールからなることによって必要な導電性を有する透明な被膜を熱溶融性樹脂層の表面に容易に設けることが出来る。   According to the packaging bag of claim 2 of the present invention, the antistatic resin layer is made of polypyrrole, so that a transparent coating film having necessary conductivity can be easily provided on the surface of the hot-melt resin layer. .

本発明の請求項3に係る包装袋によれば、基材層が、バリア層を有することによって、透明性と帯電防止性に加えて水蒸気や酸素等の透過を阻止して内容物を保護する機能および内容物から包装材料を保護する機能を強化することが出来る。   According to the packaging bag of claim 3 of the present invention, the base material layer has the barrier layer, thereby preventing the permeation of water vapor, oxygen and the like in addition to transparency and antistatic properties, thereby protecting the contents. The function and the function of protecting the packaging material from the contents can be enhanced.

本発明の請求項4に係る包装袋によれば、バリア層が無機物の透明蒸着層であることによって、透明性を失うことなく、帯電防止性に加えて水蒸気や酸素等の透過を阻止して内容物を保護する機能および内容物から包装材料を保護する機能をさらに強化することが出来る。   According to the packaging bag of claim 4 of the present invention, the barrier layer is an inorganic transparent vapor-deposited layer, so as to prevent permeation of water vapor, oxygen and the like in addition to antistatic properties without losing transparency. The function of protecting the contents and the function of protecting the packaging material from the contents can be further strengthened.

本発明の請求項5に係る包装袋は、1枚の積層体を折り返して折り返し部以外の周縁部を溶断シールにより接着させた三方シール袋であるので、表裏2枚の積層体を用いる必要がなく連続製造において積層体フィルムを1本の巻き取りから繰り出すことが出来て簡単な工程で安定して製造することが出来る。   Since the packaging bag according to claim 5 of the present invention is a three-sided seal bag in which a single laminated body is folded and a peripheral portion other than the folded portion is adhered by a fusing seal, it is necessary to use a two-sided laminated body. In continuous production, the laminate film can be unwound from a single winding and can be produced stably in a simple process.

本発明の包装袋の製造工程概略図Manufacturing process schematic diagram of the packaging bag of the present invention 本発明の包装袋に用いる積層フィルムの断面概略図Schematic cross-sectional view of a laminated film used in the packaging bag of the present invention

本発明の包装袋の実施形態の例について図面を参照して説明する。
図2は本発明の包装袋に用いる積層フィルムの一例の断面概略図である。
The example of embodiment of the packaging bag of this invention is demonstrated with reference to drawings.
FIG. 2 is a schematic cross-sectional view of an example of a laminated film used in the packaging bag of the present invention.

本発明の包装袋に用いる透明プラスチック材料の積層フィルム(11)は、ポリエチレンテレフタレート等のポリエステル樹脂、ナイロン等のポリアミド樹脂、ポリ塩化ビニル、ポリ塩化ビニリデン、ポリプロピレン等のポリオレフィン樹脂、ポリスチレン、ポリカーボネート、ポリアクリロニトリル等のフィルム及びそれらのポリ塩化ビニリデンコートフィルムの単体もしくは積層により構成される基材層(12)の片面に設けられた熱溶融性樹脂層(13)の片面に複素環式化合物重合体を化学的酸化法もしくは溶液コーティング法により形成してなる静電防止樹脂層(14)を設けたものである。   The laminated film (11) of the transparent plastic material used for the packaging bag of the present invention comprises a polyester resin such as polyethylene terephthalate, a polyamide resin such as nylon, a polyolefin resin such as polyvinyl chloride, polyvinylidene chloride, and polypropylene, polystyrene, polycarbonate, poly A heterocyclic compound polymer is provided on one side of a heat-meltable resin layer (13) provided on one side of a base material layer (12) composed of a film of acrylonitrile or the like and a polyvinylidene chloride coated film alone or laminated. An antistatic resin layer (14) formed by a chemical oxidation method or a solution coating method is provided.

基材フィルム(16)の厚みに関しては特に制限はないが、延伸ポリエチレンテレフタレートフィルムであれば30μm〜10μm以下、延伸ポリプロピレンフィルムであれば20μm〜40μm程度、延伸ナイロンフィルムであれば10μm〜30μm程度、ポリエチレンフィルムであれば30μm〜60μm程度が適当である。   Although there is no restriction | limiting in particular regarding the thickness of a base film (16), if it is a stretched polyethylene terephthalate film, 30 micrometers-10 micrometers or less, if it is a stretched polypropylene film, 20 micrometers-about 40 micrometers, if it is a stretched nylon film, about 10 micrometers-about 30 micrometers, If it is a polyethylene film, about 30-60 micrometers is suitable.

基材層(12)は上に挙げた基材層(12)を構成する基材フィルム(16)のほかに必要に応じて印刷層(17)、バリア層(15)および接着層(18)を含む構成とすることが出来る。   In addition to the base film (16) constituting the base layer (12) listed above, the base layer (12) is optionally printed layer (17), barrier layer (15) and adhesive layer (18). It can be set as the structure containing.

印刷層(17)は通常基材フィルム(16)の片面に内容物の表示を目的としてグラビア印刷法、オフセット印刷法、グラビアオフセット印刷法等の周知の印刷法により施され、絵柄およびインキは基材フィルム(16)への濡れ性と密着性を考慮して適宜選定される。   The printing layer (17) is usually applied to one side of the base film (16) by a known printing method such as gravure printing, offset printing, or gravure offset printing for the purpose of displaying the contents. The material is appropriately selected in consideration of wettability and adhesion to the material film (16).

バリア層(15)は水蒸気および酸素の透過を阻止して内容物の変質を防止する目的で必要に応じて設けられる。バリア層のフィルムとしては、たとえば、ポリ塩化ビニリデン、高密度ポリエチレン、ポリプロピレンのような水蒸気バリア性を有するもの、エチレン−酢酸ビニル共重合体鹸化物、ポリビニルアルコール、延伸ビニロン、ポリ塩化ビニリデンのような透明性が優れ酸素バリア性を有するものを用いることで、水蒸気、酸素バリア性を付与することが行われる。   The barrier layer (15) is provided as needed for the purpose of preventing the permeation of water vapor and oxygen to prevent the contents from being altered. Examples of the barrier layer film include those having water vapor barrier properties such as polyvinylidene chloride, high density polyethylene, polypropylene, saponified ethylene-vinyl acetate copolymer, polyvinyl alcohol, stretched vinylon, and polyvinylidene chloride. By using a material having excellent transparency and oxygen barrier properties, water vapor and oxygen barrier properties are imparted.

さらにバリア層(15)として、ポリエチレンテレフタレート等のポリエステル樹脂、ナイロン等のポリアミド樹脂、ポリ塩化ビニル、ポリ塩化ビニリデン、ポリプロピレン等のポリオレフィン樹脂、ポリスチレン、ポリカーボネート、ポリアクリロニトリル等のフィルムの表面に酸化珪素、酸化アルミニウム、金属アルミニウム等の無機物の蒸着層を形成する透明蒸着を行ったフィルムを用いることも出来る。   Furthermore, as a barrier layer (15), a polyester resin such as polyethylene terephthalate, a polyamide resin such as nylon, a polyolefin resin such as polyvinyl chloride, polyvinylidene chloride, and polypropylene, a silicon oxide on the surface of a film such as polystyrene, polycarbonate, polyacrylonitrile, A film subjected to transparent vapor deposition for forming a vapor deposition layer of an inorganic substance such as aluminum oxide or metal aluminum can also be used.

接着層(18)は基材フィルム(16)とバリア層(15)を接着するために設けられる。接着層(18)に用いる接着剤としては、ドライラミネーションに用いられる1液、あるいは2液硬化型ウレタン系接着剤ならどれも使用可能であり、乾燥時の塗布量は1g/mから2〜3g/m程度であれば接着強度の観点から望ましい。更には、ポリエチレンを押し出してラミネートする押し出しラミネート法も用いる事ができ、そのときはアンカーコート剤として上記2液硬化型ウレタン系コート剤、又はポリイミン系、ブタジエン系1液型硬化剤が有用であり、乾燥時の塗布量が0.1g/mから1g/m程度が望ましい。 The adhesive layer (18) is provided to adhere the base film (16) and the barrier layer (15). As the adhesive used for the adhesive layer (18), any one-component or two-component curable urethane-based adhesive used for dry lamination can be used, and the coating amount upon drying ranges from 1 g / m 2 to 2 If it is about 3 g / m < 2 >, it is desirable from a viewpoint of adhesive strength. Furthermore, an extrusion laminating method in which polyethylene is extruded and laminated can also be used. At that time, the two-component curable urethane coating agent or the polyimine-based or butadiene-based one-component curing agent is useful as the anchor coating agent. The coating amount during drying is preferably about 0.1 g / m 2 to 1 g / m 2 .

熱溶融性樹脂層(13)は低密度ポリエチレン、直鎖低密度ポリエチレン、ポリプロピレン等の主に無延伸のポリオレフィン樹脂フィルムがよく使われるが、基材層(12)に対する接着性のある熱溶融性のあるものであればこれら以外の熱溶融性の樹脂も使用することが出来る。   As the heat-meltable resin layer (13), an unstretched polyolefin resin film such as low-density polyethylene, linear low-density polyethylene, or polypropylene is often used, but the heat-meltable resin layer has an adhesive property to the base material layer (12). Any other heat-meltable resin can be used.

静電防止樹脂層(14)は、酸化触媒を一定量混合した透明バインダー樹脂を、熱溶融性樹脂層(13)の片面にグラビアコート法、ロールコート法、ブレードコート法、ディッピング法等の周知の方法によりコーティングし、このコーティング面に、ピロール、チオフェン等の複素環式化合物類を接触させることで容易に表面抵抗が10の3乗〜10の
8乗(Ω/□)の静電防止樹脂層(14)が1μm以下の膜厚で形成される。
静電防止樹脂層(14)の形成方法としては、複素環式化合物たとえばピロールの重合体であるポリピロールを溶剤に溶解してコーティングしても構わない。
For the antistatic resin layer (14), a transparent binder resin in which a certain amount of an oxidation catalyst is mixed is applied to one side of the heat-meltable resin layer (13) such as a gravure coating method, a roll coating method, a blade coating method, a dipping method, and the like. An antistatic resin having a surface resistance of 10 to the 10th power to the 10th power (Ω / □) easily by contacting the coated surface with a heterocyclic compound such as pyrrole or thiophene. The layer (14) is formed with a film thickness of 1 μm or less.
As a method of forming the antistatic resin layer (14), a heterocyclic compound such as polypyrrole, which is a polymer of pyrrole, may be coated by dissolving in a solvent.

触媒としては、塩化第二鉄、塩化第二銅、臭化鉄、臭化銅のような金属塩、過塩素酸鉄のような過塩素酸物、塩酸、硫酸のような無機酸、塩化ベンゼンジアゾニウムのようなジアゾニウム塩、ベンゾキノンのようなキノン類のいずれも使用出来る。   Catalysts include metal salts such as ferric chloride, cupric chloride, iron bromide and copper bromide, perchlorates such as iron perchlorate, inorganic acids such as hydrochloric acid and sulfuric acid, benzene chloride Any of diazonium salts such as diazonium and quinones such as benzoquinone can be used.

次に本発明の包装袋の製造方法の一例を図面を参照して説明する。
図1は本発明の包装袋の製造工程の一例の概略図である。
Next, an example of the manufacturing method of the packaging bag of this invention is demonstrated with reference to drawings.
FIG. 1 is a schematic view of an example of the manufacturing process of the packaging bag of the present invention.

本発明の包装袋に用いる積層フィルム(11)は、まず、基材フィルム(16)の片面にたとえばグラビア印刷法により印刷層(17)を施した後、ウレタン系接着剤を用いたドライラミネート法により接着層(18)を介してバリア層(15)と接着しさらに熱溶着性樹脂層(13)をバリア層(15)表面に接着して積層体を形成する。   The laminated film (11) used in the packaging bag according to the present invention is obtained by first applying a printing layer (17) to one surface of the base film (16) by, for example, a gravure printing method, and then using a urethane-based adhesive. By adhering to the barrier layer (15) via the adhesive layer (18), the heat-weldable resin layer (13) is adhered to the surface of the barrier layer (15) to form a laminate.

次に、上記の積層体の熱融着性樹脂層(13)の表面に、酸化触媒を一定量混合したアクリル樹脂等の透明バインダー樹脂をグラビアコート法もしくはディッピング方式によりコーティングし、このコーティング面に、ピロール、チオフェン等の複素環式化合物類を接触させることで静電防止樹脂層(14)を形成して積層フィルム(11)を作成する。   Next, a transparent binder resin such as an acrylic resin mixed with a certain amount of an oxidation catalyst is coated on the surface of the heat-fusible resin layer (13) of the laminate by a gravure coating method or a dipping method. An antistatic resin layer (14) is formed by contacting heterocyclic compounds such as pyrrole and thiophene to produce a laminated film (11).

この積層フィルム(11)を巻き取りから繰り出す時に基材フィルム面を外側にして表積層フィルム(1)と裏積層フィルム(2)が重なるように袋の底部となる底部折り返し(3)で折り返しながら繰り出す。   When the laminated film (11) is unwound from the winding, the base film surface is turned outside, and the front laminated film (1) and the back laminated film (2) are folded at the bottom folded back (3) to be the bottom of the bag. Pull out.

次いで、袋の両側部となる位置で側部溶断シール(4)を行い、底部折り返し(3)と合わせてトップ開口部(7)を除いて他の3方がシールされた状態の袋として一袋づつ切り離される。   Next, a side fusing seal (4) is performed at the position that becomes both sides of the bag, and the bag is sealed in the other three directions except for the top opening (7) together with the bottom folding (3). Separated by bag.

その後にトップ開口部(7)の両側を掴みながら内容物を定量充填した後、トップ溶断シール(5)によりトップ部分を密閉し、ノッチ溶断シール(6)によりノッチの機構も溶断シールにより形成する。   Then, after grabbing both sides of the top opening (7) and filling the contents quantitatively, the top part is sealed by the top fusing seal (5), and the notch mechanism is also formed by the fusing seal by the notch fusing seal (6). .

<実施例1>
延伸ポリエステルフィルム12μm厚と延伸ナイロンフィルム25μm厚と低密度ポリエチレンフィルム60μm厚をこの順序でウレタン系接着剤を用いたドライラミネート法でラミネートして積層フィルムを作成した。
<Example 1>
A laminated film was prepared by laminating a stretched polyester film of 12 μm, a stretched nylon film of 25 μm, and a low-density polyethylene film of 60 μm in this order by a dry laminating method using a urethane-based adhesive.

この積層フィルムの低密度ポリエチレンフィルム面に下記触媒含有バインダー樹脂をグラビアコート法によりコーティングし、得られた複合フィルムを25℃のピロール/空気混合雰囲気下に一定時間さらし、コーティング面に静電防止樹脂層を形成して包装袋に用いる積層フィルムを作成した。この積層フィルムの静電防止樹脂層面の表面固有抵抗値は10の6乗(Ω/□)であった。   The low-density polyethylene film surface of this laminated film is coated with the following catalyst-containing binder resin by a gravure coating method, and the resulting composite film is exposed to a pyrrole / air mixed atmosphere at 25 ° C. for a certain period of time. A layer was formed to produce a laminated film for use in a packaging bag. The surface specific resistance value of the antistatic resin layer surface of this laminated film was 10 6 (Ω / □).

〔触媒含有バインダー樹脂〕
触媒
塩化第二鉄・6水和物(関東化学、試薬)20部
バインダー樹脂
アクリル系(BR−75、三菱レイヨン)80部
溶媒
酢酸エチル(NC−401、東洋インキ)330部
触媒濃度(wt%)
触媒重量/(バインダー樹脂重量+触媒重量)×100
[Catalyst-containing binder resin]
Catalyst Ferric chloride hexahydrate (Kanto Chemical, Reagent) 20 parts Binder resin Acrylic (BR-75, Mitsubishi Rayon) 80 parts Solvent Ethyl acetate (NC-401, Toyo Ink) 330 parts Catalyst concentration (wt%) )
Catalyst weight / (Binder resin weight + Catalyst weight) × 100

次にこの積層フィルムを用いて包装袋を作成し、内容物として鰹節の粉体を封入した包装体を作成した。   Next, a packaging bag was prepared using the laminated film, and a packaging body in which bonito powder was enclosed as a content was prepared.

積層フィルムを巻き取りから繰り出す時に基材フィルム面を外側にして袋の底部となる底部折り返しで表積層フィルムと裏積層フィルムが重なるように折り返しながら繰り出した。   When the laminated film was unwound from the take-up, it was unwound while being folded so that the front laminated film and the back laminated film were overlapped by folding the bottom of the bag, with the base film side facing out.

次いで、袋の両側部となる位置で側部溶断シールを行い、底部折り返しと合わせてトップ開口部を除いて他の3方がシールされた状態の袋として一袋づつ切り離した。
その後にトップ開口部の両側を掴みながら内容物として鰹節の粉体を充填した後、トップ溶断シールによりトップ部分を密閉し、ノッチ溶断シールにより袋の上部両サイドにノッチの機構も溶断シールにより形成した。
<実施例2>
Next, side fusing sealing was performed at the positions corresponding to both sides of the bag, and the bag was cut off one by one as a bag in which the other three sides were sealed except for the top opening together with the bottom folding.
After that, after grabbing both sides of the top opening and filling with koji powder as the contents, the top part is sealed by the top fusing seal, and the notch mechanism is also formed by fusing seal on both upper sides of the bag by the notch fusing seal did.
<Example 2>

積層フィルムとして、延伸ポリエステルフィルム12μm厚の代わりに透明無機蒸着フィルムGX12μm厚(凸版印刷(株)製)と透明無機蒸着フィルムGX12μm厚(凸版印刷(株)製)の積層体を用いた他は実施例1と同様にして包装袋に用いる積層フィルムを作成した。この積層フィルムの静電防止樹脂層面の表面固有抵抗値は10の6乗(Ω/□)であった。また、この積層フィルムの水蒸気透過率は0.05g/mであった。 Other than using a laminated body of transparent inorganic vapor-deposited film GX12μm (made by Toppan Printing Co., Ltd.) and transparent inorganic vapor-deposited film GX12μm (made by Toppan Printing Co., Ltd.) instead of stretched polyester film 12μm thick as laminated film A laminated film used for a packaging bag was prepared in the same manner as in Example 1. The surface specific resistance value of the antistatic resin layer surface of this laminated film was 10 6 (Ω / □). Moreover, the water vapor transmission rate of this laminated film was 0.05 g / m 2 .

次にこの積層フィルムを用いて実施例1と同様の方法で包装袋を作成し、内容物として鰹節の粉体を封入した包装体を作成した。
<比較例1>
Next, using this laminated film, a packaging bag was produced in the same manner as in Example 1, and a packaging body in which bonito powder was enclosed as the contents was produced.
<Comparative Example 1>

低密度ポリエチレンフィルム60μm厚の代わりに直鎖低密度ポリエチレンフィルムを用い静電防止樹脂層のコーティングを行わなかった他は実施例2と同様にして包装袋に用いる積層フィルムを作成した。この積層フィルムの表面固有抵抗値は10の12乗(Ω/□)以上であった。   A laminated film used for a packaging bag was prepared in the same manner as in Example 2 except that a linear low-density polyethylene film was used instead of the low-density polyethylene film having a thickness of 60 μm and the antistatic resin layer was not coated. The surface resistivity of this laminated film was 10 12 (Ω / □) or more.

次にこの積層フィルムを用いて縦ピロー包装機で鰹節の粉体を高速充填してこの積層体の直鎖低密度ポリエチレンフィルム層を内面にして熱シール(150℃−3秒)により製袋して内容物として鰹節の粉体を封入した包装体を作成した。   Next, this laminated film is filled with powder of bonito at a high speed with a vertical pillow packaging machine, and a linear low density polyethylene film layer of this laminated body is used as an inner surface to form a bag by heat sealing (150 ° C.-3 seconds). In this way, a package was prepared in which bonito powder was enclosed.

同じ鰹節10gを包装した上記実施例と比較例の包装体を開封して内容物を取り出すにあたり、通常の開け方で10人のパネラーに取り出していただいた。このときの、平均開封取り出し量と最低取り出し量、最高取り出し量についてそれぞれ計量して確認した。
また、バリア性の比較のために上記実施例と比較例の包装体に用いた積層フィルムの水蒸気透過度を以下の方法で測定した。
それぞれの結果は表1に示した。
<水蒸気透過度の測定>
When opening the package of the above-mentioned Examples and Comparative Examples in which the same bonito 10 g was packaged and taking out the contents, 10 panelists took out the contents in a normal manner. At this time, the average unpacking removal amount, the minimum removal amount, and the maximum removal amount were measured and confirmed.
Moreover, the water vapor permeability | transmittance of the laminated | multilayer film used for the package of the said Example and a comparative example was measured with the following method for the barrier property comparison.
The results are shown in Table 1.
<Measurement of water vapor transmission rate>

日本工業規格 JIS K7129−2008「プラスチック−フィルム及びシート−水蒸気透過度の求め方(機器測定法)」で規定されているB法(赤外線センサ法)に従って水蒸気透過度を測定した。この測定は、温度が40℃であり相対湿度が90%の環境中で、Modern Control社製のPermatran3/33を使用して行った。

Figure 2011051619
The water vapor transmission rate was measured in accordance with Method B (infrared sensor method) defined in Japanese Industrial Standards JIS K7129-2008 “Plastics—Films and Sheets—Method for Determining Water Vapor Transmission Rate (Equipment Measurement Method)”. This measurement was performed using Permtran 3/33 manufactured by Modern Control in an environment where the temperature was 40 ° C. and the relative humidity was 90%.
Figure 2011051619

本発明の包装袋に用いた溶断シールによる方法では積層フィルムのエッジのみで接着するため、シール部近傍での内容物の挟み込みが少なく、表面の帯電性が低いことで、袋内部表面への内容物の付着も小さい。このことから、内容物の取り出しにおいて、実施例の包装袋は比較例の包装袋よりも10%強回収率が高い。表には示さなかったが内容物取り出し量の個人差も少なく安定している。このことは高価な内容物の廃棄を防いだり、廃棄時の分別を行う上で環境面においての効果も大きいことを示している。   In the method using the fusing seal used for the packaging bag of the present invention, since the adhesive is made only at the edge of the laminated film, the contents are not caught in the vicinity of the seal portion, and the surface chargeability is low. The adhesion of things is also small. For this reason, in taking out the contents, the packaging bag of the example has a recovery rate of more than 10% higher than the packaging bag of the comparative example. Although not shown in the table, there is little individual difference in the amount of contents taken out and it is stable. This indicates that there is a great environmental effect in preventing the disposal of expensive contents and performing separation at the time of disposal.

本発明においては溶断シールによる包装システムとしてノッチも含めてすべて溶断シール機構を使うことで安定したシステムの構築が可能となった。   In the present invention, it is possible to construct a stable system by using a fusing seal mechanism including a notch as a fusing seal packaging system.

1…表積層フィルム
2…裏積層フィルム
3…底部折返し
4…側部溶断シール
5…トップ溶断シール
6…ノッチ溶断シール
7…トップ開口部
11…積層フィルム
12…基材層
13…熱溶融性樹脂層
14…静電防止樹脂層
15…バリア層
16…基材フィルム
17…印刷層
18…接着層
A…鰹節の粉体
DESCRIPTION OF SYMBOLS 1 ... Front laminated film 2 ... Back laminated film 3 ... Bottom folding | turning 4 ... Side part cutting seal 5 ... Top fusing seal 6 ... Notch fusing seal 7 ... Top opening part 11 ... Laminated film 12 ... Base material layer 13 ... Thermomeltable resin Layer 14 ... Antistatic resin layer 15 ... Barrier layer 16 ... Base film 17 ... Print layer 18 ... Adhesive layer A ... Bush powder

Claims (5)

基材層と熱溶融樹脂層と熱溶融樹脂層の表面に設けられた、非熱溶融性で表面固有抵抗が10の8乗(Ω/□)以下の静電防止樹脂層からなる積層体からなり、周縁部を溶断シールにより接着させ且つ、溶断シールで切り込み乃至切り欠きを形成して開封用のノッチとしたことを特徴とする包装袋。   From a laminate comprising an antistatic resin layer provided on the surface of a base material layer, a heat-melting resin layer, and a heat-melting resin layer and having a non-heat-melting property and a surface specific resistance of 10 8 (Ω / □) or less The packaging bag is characterized in that the peripheral edge portion is bonded by a fusing seal, and a notch for opening is formed by forming a cut or notch with the fusing seal. 静電防止樹脂層が、ポリピロールからなることを特徴とする請求項1に記載の包装袋。   The packaging bag according to claim 1, wherein the antistatic resin layer is made of polypyrrole. 基材層が、バリア層を有することを特徴とする請求項1または2に記載の包装袋。   The packaging bag according to claim 1 or 2, wherein the base material layer has a barrier layer. バリア層が無機物の透明蒸着層であることを特徴とする請求項1から3のいずれか1項に記載の包装袋。   The packaging bag according to any one of claims 1 to 3, wherein the barrier layer is an inorganic transparent deposited layer. 包装袋が1枚の積層体を折り返して折り返し部以外の周縁部を溶断シールにより接着させた三方シール袋であることを特徴とする請求項1から4のいずれか1項に記載の包装袋。   The packaging bag according to any one of claims 1 to 4, wherein the packaging bag is a three-side sealed bag in which a single laminated body is folded and a peripheral portion other than the folded portion is adhered by a fusing seal.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014069888A (en) * 2012-10-01 2014-04-21 Dainippon Printing Co Ltd Retort pouch, and method for manufacturing retort pouch
JP2019147615A (en) * 2019-03-25 2019-09-05 住友ベークライト株式会社 Packaging bag for vegetable and fruit

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Publication number Priority date Publication date Assignee Title
JPS59146813A (en) * 1983-02-10 1984-08-22 Ube Ind Ltd Method of thermal sealing
JPH09193307A (en) * 1996-01-23 1997-07-29 Kureha Chem Ind Co Ltd Laminated film and packaging bag for electronic part
JP2001105531A (en) * 1999-10-08 2001-04-17 Suzutora:Kk Transparent conductive bag
JP2002067246A (en) * 2000-08-24 2002-03-05 Toppan Printing Co Ltd Antistatic laminated body and packaging bag using it
JP2008254776A (en) * 2007-04-05 2008-10-23 Yamagata Gravure Co Ltd Article packaging bag and article package
JP2009214923A (en) * 2008-03-12 2009-09-24 Shinwa Sangyo Kk Packaged food, sheet fixing device, and sheet fixing method

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Publication number Priority date Publication date Assignee Title
JPS59146813A (en) * 1983-02-10 1984-08-22 Ube Ind Ltd Method of thermal sealing
JPH09193307A (en) * 1996-01-23 1997-07-29 Kureha Chem Ind Co Ltd Laminated film and packaging bag for electronic part
JP2001105531A (en) * 1999-10-08 2001-04-17 Suzutora:Kk Transparent conductive bag
JP2002067246A (en) * 2000-08-24 2002-03-05 Toppan Printing Co Ltd Antistatic laminated body and packaging bag using it
JP2008254776A (en) * 2007-04-05 2008-10-23 Yamagata Gravure Co Ltd Article packaging bag and article package
JP2009214923A (en) * 2008-03-12 2009-09-24 Shinwa Sangyo Kk Packaged food, sheet fixing device, and sheet fixing method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014069888A (en) * 2012-10-01 2014-04-21 Dainippon Printing Co Ltd Retort pouch, and method for manufacturing retort pouch
JP2019147615A (en) * 2019-03-25 2019-09-05 住友ベークライト株式会社 Packaging bag for vegetable and fruit

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