JPH07227932A - Laminated film and manufacture thereof - Google Patents

Laminated film and manufacture thereof

Info

Publication number
JPH07227932A
JPH07227932A JP6021162A JP2116294A JPH07227932A JP H07227932 A JPH07227932 A JP H07227932A JP 6021162 A JP6021162 A JP 6021162A JP 2116294 A JP2116294 A JP 2116294A JP H07227932 A JPH07227932 A JP H07227932A
Authority
JP
Japan
Prior art keywords
film
ethylene
methacrylic acid
acid copolymer
base material
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
Application number
JP6021162A
Other languages
Japanese (ja)
Other versions
JP3336719B2 (en
Inventor
Yoshinori Yamada
義則 山田
Masanobu Okamura
正信 岡村
Takeshi Takahara
健 高原
Takeshi Shimatani
健 島谷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toppan Inc
Original Assignee
Toppan Printing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toppan Printing Co Ltd filed Critical Toppan Printing Co Ltd
Priority to JP02116294A priority Critical patent/JP3336719B2/en
Publication of JPH07227932A publication Critical patent/JPH07227932A/en
Application granted granted Critical
Publication of JP3336719B2 publication Critical patent/JP3336719B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/70General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined

Abstract

PURPOSE:To enhance adhesion under a dry and lowly humid state by a method wherein an ethylene-methacrylic acid copolymer is extruded so as to form a film on the bond area of the base material of a laminated film in order to blast O3-containing air under specified conditions against the copolymer. CONSTITUTION:The bond area side of a base material 4 consisting of a laminated film, in the construction of which aluminum foil 1 is included, is made of a biaxially oriented polyethylene terephthalate film or biaxially oriented nylon film 3. Further, in-line corona treatment is applied onto the above-mentioned bond area. On the other hand, after the air containing 1g/Nm<3> or more of O3 is blasted under the condition of 0.5/Nm<3>/hr or more against the bond area of an ethylene-methacrylic acid copolymer resin 5, which is extruded from the T-die of an extrusion molder so as to form film, both the film 3 and the resin 5 are bonded together under pressure. Concretely, the ethylene-methacrylic acid copolymer resin 5 is extruded under melted state and, after ozone- containing air is blasted from an ozone treating bar 30 against one side of thin melted film 5', laminated under pressure to the base material 4 by being pinched between a cooling roll 10 and a nip roll 40.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明はラミネートフィルムの製
造方法に関する。さらに詳しくは、廃棄性に優れ、かつ
アンカーコート剤を用いることなく、乾燥状態および低
湿度状態において優れた接着力を有し、乾燥食品,浴用
剤顆粒・粉末等の包装材として好適なラミネートフィル
ムの製造方法に関する。
FIELD OF THE INVENTION The present invention relates to a method for producing a laminated film. More specifically, it is a laminate film that is excellent in disposability, has excellent adhesive strength in a dry state and a low humidity state without using an anchor coating agent, and is suitable as a packaging material for dry foods, bath agent granules, powders, etc. Manufacturing method.

【0002】[0002]

【従来の技術】アルミニウム箔は、その酸素バリア性,
水蒸気バリア性,遮光性,保香性等の優れた性質から、
各種包装を目的としたラミネートフィルムに広く利用さ
れている。
2. Description of the Related Art Aluminum foil has an oxygen barrier property,
Due to its excellent properties such as water vapor barrier properties, light shielding properties and aroma retention properties,
It is widely used as a laminated film for various packaging purposes.

【0003】また、包装用途に関しては、包装容器用蓋
材や袋状包装材等として使用される場合が多く、そのた
めヒートシール性を備えていることが要求される。
In addition, for packaging purposes, it is often used as a lid material for packaging containers, bag-shaped packaging material, and the like, and therefore, it is required to have heat sealability.

【0004】そこで、セロハン,二軸延伸ポリプロピレ
ンフィルム,二軸延伸ナイロンフィルム,二軸延伸ポリ
エチレンテレフタレートフィルム等に、アルミニウム
箔、さらに種々の目的から他の高分子フィルム,樹脂を
ラミネートした基材に対し、ヒートシール性を有し、食
品等の包装内容物に影響の少ないポリエチレン,エチレ
ン−酢酸ビニル共重合体,エチレン−メタクリル酸共重
合体等のポリエチレン系樹脂を内側に押出ラミネートす
るラミネートフィルムの製造方法が広く知られている。
Therefore, with respect to a base material obtained by laminating cellophane, biaxially oriented polypropylene film, biaxially oriented nylon film, biaxially oriented polyethylene terephthalate film, etc., with aluminum foil and other polymer films and resins for various purposes. Manufacture of laminated film that has heat sealability and has little effect on packaging contents such as foods, by extruding and laminating polyethylene resin such as polyethylene, ethylene-vinyl acetate copolymer, ethylene-methacrylic acid copolymer, etc. The method is widely known.

【0005】特に、アルミニウム箔を構成中に含む基材
の場合、アルミニウム箔面を接合面とし、その金属接着
性・低温ヒートシール性・夾雑物ヒートシール性・ホッ
トタック性・耐ピンホール性等の優れた性質から、エチ
レン−メタクリル酸共重合体樹脂を押出ラミネートする
ことが多く、さらに耐スクラッチ性等の問題より、他樹
脂およびフィルムをさらにラミネートする場合も多い。
Particularly, in the case of a base material containing an aluminum foil in its constitution, the aluminum foil surface is used as a bonding surface, and its metal adhesion, low temperature heat sealability, foreign matter heat sealability, hot tack resistance, pinhole resistance, etc. Due to its excellent properties, the ethylene-methacrylic acid copolymer resin is often extrusion-laminated, and due to problems such as scratch resistance, other resins and films are often further laminated.

【0006】ここで、押出ラミネート法とは、各種高分
子フィルム・紙・アルミニウム箔あるいはこれらのラミ
ネートフィルムを基材とし、溶融したポリエチレン,エ
チレン−酢酸ビニル共重合体等の樹脂を、押出成形機の
T−ダイより押出し、製膜すると共に、これを前記基材
に圧着ラミネートする方法である。
Here, the extrusion laminating method is based on various polymer films, papers, aluminum foils or laminated films thereof, and melted resins such as polyethylene and ethylene-vinyl acetate copolymer are used as extrusion molding machines. The method of extruding from a T-die, forming a film, and press-bonding the film onto the base material.

【0007】しかしながら、基材を、アルミニウム箔を
接合面に設けたラミネートフィルムとし、溶融押出樹脂
をエチレン−メタクリル酸共重合体樹脂とした場合、両
者(アルミニウム箔とエチレン−メタクリル酸共重合体
樹脂)の強固な接着性ゆえに、ラミネートフィルムの使
用後、アルミニウム箔を分別し、廃棄することができな
い。
However, when the base material is a laminated film having an aluminum foil on the joint surface and the melt-extruded resin is an ethylene-methacrylic acid copolymer resin, both (aluminum foil and ethylene-methacrylic acid copolymer resin) are used. ), The aluminum foil cannot be separated and discarded after the use of the laminated film.

【0008】そのため、ラミネートフィルムを焼却処理
する際には、アルミニウムを酸化させるためには700
℃以上で燃焼させることが必要であり、多くの場合は、
灰の中にアルミニウムが箔として残留するため、重大な
環境問題となっている。
Therefore, when the laminated film is incinerated, 700% is required to oxidize aluminum.
It is necessary to burn above ℃, and in many cases,
Aluminum remains as a foil in the ash, which is a serious environmental problem.

【0009】そのため、基材として用いる二軸延伸ポリ
プロピレンフィルム,二軸延伸ナイロンフィルム,二軸
延伸ポリエチレンテレフタレートフィルムに、ポリ塩化
ビニリデンをコートしたフィルムを使用することや、基
材としてエチレン−ビニルアルコール共重合体フィルム
を構成中に含むラミネートフィルム等を使用することが
提案されているが、ポリ塩化ビニリデンコートフィルム
においては、塩素を含んでいるために、焼却時に塩化水
素ガスが発生するという問題点があり、エチレン−ビニ
ルアルコール共重合体フィルムにおいては、その酸素透
過性に、温度や湿度への依存性があるという問題点があ
り、さらには、いずれのフィルムにおいても、紫外線を
はじめとする光による劣化を嫌う内容物を包装するに際
して、遮光性がないという致命的欠点が指摘されてい
る。
Therefore, a biaxially stretched polypropylene film, a biaxially stretched nylon film, or a biaxially stretched polyethylene terephthalate film used as a substrate is coated with polyvinylidene chloride. It has been proposed to use a laminated film or the like containing a polymer film in its constitution, but in the polyvinylidene chloride coated film, since it contains chlorine, there is a problem that hydrogen chloride gas is generated during incineration. However, in the ethylene-vinyl alcohol copolymer film, there is a problem that its oxygen permeability has a dependency on temperature and humidity, and further, in any film, due to light including ultraviolet rays. When packaging contents that are averse to deterioration, do not block light. Fatal drawback has been pointed out that.

【0010】さらには、これらポリ塩化ビニリデンコー
トフィルムのコート面および非コート面や、エチレン−
ビニルアルコール共重合体フィルムに対し、エチレン−
メタクリル酸共重合体を含むポリエチレン系樹脂を押出
ラミネートする場合は、実用に供するに充分な接着強度
を得るためには、前記フィルムにアンカーコート処理を
行わねばならず、作業工程が複雑となり、また用いるア
ンカーコート剤によっては、接着後に数日から一週間の
エージング期間を必要としたり、溶剤使用による作業環
境悪化や防災上の問題、塗布後の乾燥が不十分な場合、
フィルム中の残留溶剤による包装内容物への着臭の可能
性が残る等多くの問題が生じてくる。
Furthermore, the coated and uncoated surfaces of these polyvinylidene chloride coated films and ethylene-
For the vinyl alcohol copolymer film, ethylene-
When a polyethylene resin containing a methacrylic acid copolymer is extrusion-laminated, in order to obtain a sufficient adhesive strength for practical use, the film must be subjected to anchor coat treatment, which complicates the work process, and Depending on the anchor coating agent used, aging period of several days to one week is required after bonding, work environment deterioration due to solvent use and disaster prevention problems, when drying after application is insufficient,
Many problems arise, such as the possibility that the residual solvent in the film may cause the package contents to smell.

【0011】[0011]

【発明が解決しようとする課題】本発明は、かかる問題
点を解消すべく、廃棄性に優れ、かつアンカーコート剤
を用いることなく、乾燥状態および低湿度状態において
優れた接着力を有し、乾燥食品,浴用剤顆粒・粉末等の
包装材として好適であるラミネートフィルムおよびその
製造方法を提供することを目的とする。
SUMMARY OF THE INVENTION In order to solve the above problems, the present invention has excellent disposability and has excellent adhesive force in a dry state and a low humidity state without using an anchor coating agent, An object of the present invention is to provide a laminated film suitable as a packaging material for dry foods, bath agent granules and powders, and a method for producing the same.

【0012】[0012]

【課題を解決するための手段】すなわち本発明は、アル
ミニウム箔を構成中に含むラミネートフィルムからなる
基材に、エチレン−メタクリル酸共重合体樹脂を押出ラ
ミネートするラミネートフィルムの製造方法において、
前記基材の接合面側を、二軸延伸ポリエチレンテレフタ
レートフィルムあるいは二軸延伸ナイロンフィルムと
し、前記接合面にインラインコロナ放電処理を施し、他
方、押出成形機のT−ダイより押出され、製膜されるエ
チレン−メタクリル酸共重合体樹脂の接合面側に、1g
/Nm3 以上のオゾンを含有する空気を、0.5Nm3
/hr以上の条件で吹き付けた後、両者を圧着させるこ
とを特徴とするものである。
Means for Solving the Problems That is, the present invention provides a method for producing a laminate film, which comprises extrusion-laminating an ethylene-methacrylic acid copolymer resin on a substrate comprising a laminate film containing an aluminum foil in its constitution,
The joint surface side of the base material is a biaxially stretched polyethylene terephthalate film or a biaxially stretched nylon film, and the joint surface is subjected to in-line corona discharge treatment, while it is extruded from a T-die of an extrusion molding machine to form a film. 1g on the bonding surface side of ethylene-methacrylic acid copolymer resin
/ Nm 3 or more of the air containing ozone is 0.5 Nm 3
After being sprayed under a condition of / hr or more, both are pressure-bonded.

【0013】また、本発明によるラミネートフィルム
は、少なくとも、基材およびエチレン−メタクリル酸共
重合体樹脂層からなる構成のラミネートフィルムにおい
て、基材側の、エチレン−メタクリル酸共重合体樹脂層
との接合面を、二軸延伸ポリエチレンテレフタレートフ
ィルムあるいは二軸延伸ナイロンフィルムとし、前記接
合面における接着強度が、乾燥状態および低湿度状態で
は200gf/15mm以上であり、水分浸透時には1
0gf/15mm以下であることを特徴とするものであ
る。
Further, the laminate film according to the present invention is a laminate film having at least a substrate and an ethylene-methacrylic acid copolymer resin layer, and is composed of an ethylene-methacrylic acid copolymer resin layer on the substrate side. The joint surface is a biaxially stretched polyethylene terephthalate film or a biaxially stretched nylon film, and the adhesive strength on the joint surface is 200 gf / 15 mm or more in a dry state and a low humidity state, and 1 when moisture permeates.
It is characterized by being 0 gf / 15 mm or less.

【0014】好ましくは、前記基材として、アルミニウ
ム箔を構成中に含むラミネートフィルムであることを特
徴とする。
Preferably, the base material is a laminate film containing aluminum foil in its constitution.

【0015】前記エチレン−メタクリル酸共重合体樹脂
としては、分子鎖中に不規則に存在するカルボキシル基
が水素結合によって分子鎖間で架橋したエチレンとメタ
クリル酸のランダム共重合体等が多く用いられるが、本
発明はこれに限定されるものではない。
As the ethylene-methacrylic acid copolymer resin, a random copolymer of ethylene and methacrylic acid in which a carboxyl group irregularly present in the molecular chain is crosslinked between the molecular chains by a hydrogen bond is often used. However, the present invention is not limited to this.

【0016】エチレン−メタクリル酸共重合体中の酸含
量としては、好ましくは1〜20wt%、更に好ましく
は7〜13wt%程度である。
The acid content in the ethylene-methacrylic acid copolymer is preferably 1 to 20 wt%, more preferably 7 to 13 wt%.

【0017】前記二軸延伸ポリエチレンテレフタレート
フィルムとしては、例えばテレフタル酸のエステルまた
は塩化物と、エチレングリコールとの重縮合反応によっ
て得られる線状ポリエステルをフィルム状に成形し、縦
軸方向および横軸方向に二軸延伸したもの等が挙げら
れ、一般の市販品がそのまま使用可能である。この時、
種々の目的から、テレフタル酸の一部を他のジカルボン
酸としたり、あるいはエチレングリコールの一部を他の
ジオールとすることも可能である。
As the biaxially stretched polyethylene terephthalate film, for example, a linear polyester obtained by a polycondensation reaction of an ester or chloride of terephthalic acid and ethylene glycol is formed into a film, and the longitudinal and transverse directions are Examples include biaxially stretched materials, and general commercially available products can be used as they are. This time,
For various purposes, part of terephthalic acid can be replaced with another dicarboxylic acid, or part of ethylene glycol can be replaced with another diol.

【0018】前記二軸延伸ナイロンフィルムとは、分子
内にアミド結合を有する線状重合体をフィルム状に成形
し、縦軸方向および横軸方向に二軸延伸したものであ
り、一般の市販品がそのまま使用可能である。
The biaxially stretched nylon film is a film obtained by molding a linear polymer having an amide bond in the molecule into a film and biaxially stretching it in the longitudinal and transverse directions. Can be used as is.

【0019】[0019]

【作用】エチレン−メタクリル酸共重合体樹脂を、押出
成形機のT−ダイより溶融状態にて押出し、薄膜状とす
ると共に、溶融薄膜樹脂に対しオゾン処理を施すことに
より、強制的にエチレン−メタクリル酸共重合体の酸化
反応が進み、接着性が改善される。
The ethylene-methacrylic acid copolymer resin is extruded in a molten state from a T-die of an extrusion molding machine to form a thin film, and the molten thin film resin is subjected to ozone treatment to force ethylene-methacrylic acid copolymer resin. The oxidation reaction of the methacrylic acid copolymer proceeds and the adhesiveness is improved.

【0020】この時、オゾン処理の条件としては、前記
条件を満たすことが必要であり、その条件以下では酸化
反応が充分ではなく、実用に供することができない。
At this time, it is necessary to satisfy the above conditions as conditions for the ozone treatment, and if the conditions are not satisfied, the oxidation reaction is not sufficient and it cannot be put to practical use.

【0021】また、基材側接合面に対するコロナ放電処
理の作用としては、表面に細かな凹凸ができる物理的作
用と、酸化あるいはイオン化による活性化という化学的
作用の2つが考えられ、これらの作用により接着性が改
善される。
As the action of corona discharge treatment on the joint surface on the base material side, there are two possible actions, a physical action for forming fine irregularities on the surface and a chemical action for activation by oxidation or ionization, and these actions are considered. Improves adhesion.

【0022】また、一般にコロナ放電処理の効果は、経
時的に退行することが知られているが、本発明では、イ
ンラインつまり押出ラミネート加工時に一体的にコロナ
放電処理を施すことで、経時的退行なしに絶大なる処理
効果を得て押出ラミネートを行うことができる。
Further, it is generally known that the effect of corona discharge treatment deteriorates with time. However, in the present invention, by performing the corona discharge treatment integrally during in-line, that is, extrusion lamination, the effect of corona discharge treatment deteriorates with time. It is possible to perform extrusion lamination with a great processing effect without using it.

【0023】本発明は、以上の作用の相乗効果により、
実現が可能とされたもので、ポリエチレンテレフタレー
トまたはナイロンとエチレン−メタクリル酸共重合体と
いう全く異なった樹脂系のものをアンカーコート剤を用
いることなく強固な接着をせしめるものである。
The present invention has the following synergistic effects.
It is a material that can be realized, and is capable of firmly adhering polyethylene terephthalate or nylon and an ethylene-methacrylic acid copolymer, which are completely different resins, without using an anchor coating agent.

【0024】また、驚くべきことに、上記ラミネート方
法による接着では、水が介在することにより直ちに接着
性が失われることが確認された。そのため、本発明によ
るラミネートフィルムは、使用後、アルミニウム箔を構
成中に含む基材を分離することができ、分別して廃棄す
ることが可能となる。従って、焼却処理の際に焼却炉中
にアルミニウムが箔として残存することを防止できる。
Surprisingly, it was confirmed that the adhesion by the above-mentioned laminating method immediately loses the adhesiveness due to the presence of water. Therefore, the laminated film according to the present invention can separate the base material including the aluminum foil in its structure after use, and can separate and dispose of the base material. Therefore, it is possible to prevent aluminum from remaining as foil in the incinerator during the incineration process.

【0025】すなわち、本発明のラミネートフィルム
は、使用後に水に浸漬させておくことにより、アルミニ
ウム箔を構成中に含む基材とエチレン−メタクリル酸共
重合体層との間に水が浸透することにより、容易にアル
ミニウム箔を含む基材側が剥離可能となり、誰もが簡単
にかつ手早く、有効に廃棄することが可能となるわけで
ある。
That is, when the laminated film of the present invention is soaked in water after use, water penetrates between the base material including the aluminum foil in the constitution and the ethylene-methacrylic acid copolymer layer. Thus, the base material side including the aluminum foil can be easily peeled off, and anyone can easily and quickly dispose of it effectively.

【0026】[0026]

【実施例】以下、本発明を、図面を参照し、実施例によ
りさらに詳細に説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail below with reference to the drawings and embodiments.

【0027】<実施例1>軟質アルミニウム箔1(三菱
アルミニウム(株)製、厚み=7μm)に対し、二軸延
伸ポリエチレンテレフタレートフィルム3(E520
2:東洋紡績(株)製、厚み=12μm)をあらかじめ
ドライラミネートした基材4の二軸延伸ポリエチレンテ
レフタレートフィルム面に、3.5kWの条件でインラ
インコロナ放電処理を施し、一方、エチレン−メタクリ
ル酸共重合体樹脂5(N0908C:三井デュポンポリ
ケミカル(株)製、酸含有量=9wt%、MFR=8d
g/min、密度=0.93g/cm3 )を、下記(表
1)の条件で、T−ダイ20より溶融状態にて押出し、
薄膜状とすると共に、下記(表2)の条件で、前記溶融
薄膜樹脂5´の片面に、オゾン処理バー30よりオゾン
含有空気を吹き付け、前記溶融薄膜樹脂のオゾン処理面
を接合面とし、冷却ロール10とニップロール40との
間で、前記基材4のコロナ処理面に圧着ラミネートし
た。(図1・図2参照)
<Example 1> A biaxially stretched polyethylene terephthalate film 3 (E520) was added to a soft aluminum foil 1 (Mitsubishi Aluminum Co., Ltd., thickness = 7 μm).
2: Toyobo Co., Ltd., thickness = 12 μm), the biaxially stretched polyethylene terephthalate film surface of the base material 4 previously dry laminated was subjected to in-line corona discharge treatment under the condition of 3.5 kW, while ethylene-methacrylic acid was used. Copolymer resin 5 (N0908C: manufactured by DuPont Mitsui Polychemical Co., Ltd., acid content = 9 wt%, MFR = 8d
g / min, density = 0.93 g / cm 3 ) was extruded in a molten state from the T-die 20 under the following conditions (Table 1),
A thin film is formed, and ozone-containing air is blown from one of the molten thin film resins 5'on one side of the molten thin film resin 5'by the ozone treatment bar 30 under the following conditions (Table 2), and the ozone treated surface of the molten thin film resin is used as a joint surface and cooled. The roll 10 and the nip roll 40 were pressure-laminated on the corona-treated surface of the substrate 4. (See Figures 1 and 2)

【0028】[0028]

【表1】 [Table 1]

【0029】[0029]

【表2】 [Table 2]

【0030】上記条件で製造されたラミネートフィルム
について、基材とエチレン−メタクリル酸共重合体層と
の接着強度の測定(測定条件:T型剥離、剥離速度30
0mm/min)を行い、さらに、上記フィルムを蒸留
水に5分間浸透させた後に、同様の条件で接着強度の測
定を行った。測定結果を表3に示す。
With respect to the laminated film produced under the above conditions, measurement of the adhesive strength between the substrate and the ethylene-methacrylic acid copolymer layer (measurement conditions: T-type peeling, peeling speed 30
(0 mm / min), and the above film was soaked in distilled water for 5 minutes, and then the adhesive strength was measured under the same conditions. The measurement results are shown in Table 3.

【0031】<実施例2>軟質アルミニウム箔1(実施
例1と同様)に対し、二軸延伸ナイロンフィルム3(ボ
ニールW:興人(株)製、厚み=15μm)をあらかじ
めドライラミネートした基材4の二軸延伸ナイロンフィ
ルム面に、3.5kWの条件でインラインコロナ放電処
理を施し、一方、エチレン−メタクリル酸共重合体樹脂
(実施例1と同様)を実施例1と同様の条件にて溶融状
態にて押出し、薄膜状とすると共に、オゾン含有空気を
吹き付け、前記溶融薄膜樹脂のオゾン処理面を接合面と
し、冷却ロール10とニップロール40との間で、前記
基材4のコロナ処理面に圧着ラミネートした。(図1・
図2参照)
<Example 2> A substrate in which a biaxially stretched nylon film 3 (Bonil W: manufactured by Kojin Co., Ltd., thickness = 15 μm) was previously dry-laminated on a soft aluminum foil 1 (similar to Example 1). The biaxially stretched nylon film surface of No. 4 was subjected to in-line corona discharge treatment under the condition of 3.5 kW, while ethylene-methacrylic acid copolymer resin (as in Example 1) was subjected to the same conditions as in Example 1. Extruded in a molten state to form a thin film, blown with ozone-containing air, and use the ozone-treated surface of the molten thin-film resin as a joint surface, and between the cooling roll 10 and the nip roll 40, the corona-treated surface of the substrate 4. It was pressure-bonded and laminated. (Fig. 1
(See Figure 2)

【0032】得られたラミネートフィルムに対し、実施
例1と同様の条件にて接着強度の測定を行った。測定結
果を、表3に示す。
The adhesive strength of the obtained laminated film was measured under the same conditions as in Example 1. The measurement results are shown in Table 3.

【0033】<比較例1>軟質アルミニウム箔(実施例
1と同様)に対し、二軸延伸ポリエチレンテレフタレー
トフィルム(実施例1と同様)をあらかじめドライラミ
ネートした基材に対し、エチレン−メタクリル酸共重合
体樹脂(実施例1と同様)を、実施例1と同様の条件に
て溶融押出製膜し、冷却ロールとニップロールとの間
で、前記基材のアルミニウム箔面に圧着ラミネートし
た。
Comparative Example 1 A soft aluminum foil (similar to Example 1) and a biaxially stretched polyethylene terephthalate film (similar to Example 1) were previously dry-laminated on a substrate, and an ethylene-methacrylic acid copolymer was used. The united resin (same as in Example 1) was melt-extruded into a film under the same conditions as in Example 1 and pressure-bonded to the aluminum foil surface of the substrate between the cooling roll and the nip roll.

【0034】得られたラミネートフィルムに対し、実施
例1と同様の条件にて接着強度の測定を行った。測定結
果を表3に示す。
The adhesive strength of the obtained laminated film was measured under the same conditions as in Example 1. The measurement results are shown in Table 3.

【0035】<比較例2>軟質アルミニウム箔(実施例
1と同様)に対し、二軸延伸ポリエチレンテレフタレー
トフィルム(実施例1と同様)をあらかじめドライラミ
ネートした基材に対し、エチレン−メタクリル酸共重合
体樹脂(実施例1と同様)を、実施例1と同様の条件に
て、溶融状態にて押出し、薄膜状とすると共に、オゾン
含有空気を吹き付け、前記溶融薄膜樹脂のオゾン処理面
を接合面とし、冷却ロールとニップロールとの間で、前
記基材の二軸延伸ポリエチレンテレフタレート面に圧着
ラミネートした。
Comparative Example 2 A soft aluminum foil (similar to Example 1) and a biaxially stretched polyethylene terephthalate film (similar to Example 1) were previously dry-laminated to a base material, and an ethylene-methacrylic acid copolymer was used. A united resin (similar to Example 1) is extruded in a molten state under the same conditions as in Example 1 to form a thin film, and ozone-containing air is blown to the ozone treated surface of the molten thin film resin to form a joint surface. Then, the biaxially stretched polyethylene terephthalate surface of the substrate was pressure-bonded and laminated between the cooling roll and the nip roll.

【0036】得られたラミネートフィルムに対し、実施
例1と同様の条件にて接着強度の測定を行った。測定結
果を表3に示す。
The adhesive strength of the obtained laminated film was measured under the same conditions as in Example 1. The measurement results are shown in Table 3.

【0037】<比較例3>軟質アルミニウム箔(実施例
1と同様)に対し、二軸延伸ポリエチレンテレフタレー
トフィルム(実施例1と同様)をあらかじめドライラミ
ネートした基材に対し、エチレン−メタクリル酸共重合
体樹脂(実施例1と同様)を、実施例1と同様の条件で
溶融状態にて押出し、薄膜状とすると共に、冷却ロール
とニップロールとの間で、前記基材の二軸延伸ポリエチ
レンテレフタレート面に圧着ラミネートした。
COMPARATIVE EXAMPLE 3 A soft aluminum foil (similar to Example 1) and a biaxially stretched polyethylene terephthalate film (similar to Example 1) were previously dry-laminated to a substrate, and an ethylene-methacrylic acid copolymer was used. A united resin (similar to Example 1) is extruded in a molten state under the same conditions as in Example 1 to form a thin film, and a biaxially stretched polyethylene terephthalate surface of the substrate is provided between a cooling roll and a nip roll. It was pressure-bonded and laminated.

【0038】得られたラミネートフィルムに対し、実施
例1と同様の条件にて接着強度の測定を行った。測定結
果を表3に示す。
The adhesive strength of the obtained laminated film was measured under the same conditions as in Example 1. The measurement results are shown in Table 3.

【0039】<比較例4>軟質アルミニウム箔(実施例
1と同様)に対し、二軸延伸ポリプロピレンフィルム
(P2261:東洋紡績(株)製、厚み=20μm)を
あらかじめドライラミネートした基材の二軸延伸ポリプ
ロピレンフィルム面に、3.5kWの条件でインライン
コロナ放電処理を施し、一方、エチレン−メタクリル酸
共重合体樹脂(実施例1と同様)を実施例1と同様の条
件にて溶融状態にて押出し、薄膜状とすると共に、オゾ
ン含有空気を吹き付け、前記溶融薄膜のオゾン処理面を
接合面とし、冷却ロールとニップロールとの間で前記基
材コロナ処理面に圧着ラミネートした。
Comparative Example 4 Biaxially stretched polypropylene film (P2261: manufactured by Toyobo Co., Ltd., thickness = 20 μm) was preliminarily dry-laminated on a soft aluminum foil (similar to Example 1). The stretched polypropylene film surface was subjected to in-line corona discharge treatment under the condition of 3.5 kW, while ethylene-methacrylic acid copolymer resin (as in Example 1) was melted under the same conditions as in Example 1. The film was extruded into a thin film and blown with ozone-containing air, and the ozone-treated surface of the molten thin film was used as a joint surface and pressure-bonded to the substrate corona-treated surface between the cooling roll and the nip roll.

【0040】得られたラミネートフィルムに対し、実施
例1と同様の条件にて接着強度の測定を行った。測定結
果を表3に示す。
The adhesive strength of the obtained laminated film was measured under the same conditions as in Example 1. The measurement results are shown in Table 3.

【0041】[0041]

【表3】 [Table 3]

【0042】[0042]

【発明の効果】以上説明したように本発明は、アルミニ
ウム箔を構成中に含むラミネートフィルムからなる基材
に、エチレン−メタクリル酸共重合体樹脂を押出ラミネ
ートするラミネートフィルムの製造方法において、前記
基材の接合面側を、二軸延伸ポリエチレンテレフタレー
トフィルムあるいは二軸延伸ナイロンフィルムとし、前
記接合面にインラインコロナ放電処理を施し、他方、押
出成形機のT−ダイより押出され、製膜されるエチレン
−メタクリル酸共重合体樹脂の接合面側に、1g/Nm
3 以上のオゾンを含有する空気を、0.5Nm3 /hr
以上の条件で吹き付けた後、両者を圧着させることを特
徴とするラミネートフィルムの製造方法であり、インラ
インコロナ放電処理およびオゾン処理の相乗効果によ
り、乾燥状態および低湿度状態において、二軸延伸ポリ
エチレンテレフタレートフィルムあるいは二軸延伸ナイ
ロンフィルムとエチレン−メタクリル酸共重合体樹脂と
の間で優れた接着力を有し、かつ廃棄性に優れ、乾燥食
品,浴用剤顆粒・粉末等の包装材として好適なラミネー
トフィルムが得られる。
INDUSTRIAL APPLICABILITY As described above, the present invention provides a method for producing a laminated film, which comprises extruding and laminating an ethylene-methacrylic acid copolymer resin on a substrate made of a laminated film containing an aluminum foil in its constitution. A biaxially stretched polyethylene terephthalate film or a biaxially stretched nylon film is used on the joint surface side of the material, and the joint surface is subjected to in-line corona discharge treatment, and on the other hand, ethylene is extruded from a T-die of an extrusion molding machine to form a film. -1 g / Nm on the bonding surface side of the methacrylic acid copolymer resin
Air containing 3 or more ozone is 0.5 Nm 3 / hr
After spraying under the above conditions, it is a method for producing a laminate film, which is characterized by pressing the two, by a synergistic effect of in-line corona discharge treatment and ozone treatment, in a dry state and low humidity state, biaxially stretched polyethylene terephthalate A laminate that has excellent adhesive strength between a film or biaxially stretched nylon film and an ethylene-methacrylic acid copolymer resin, and has excellent disposability, and is suitable as a packaging material for dry food, bath agent granules, powders, etc. A film is obtained.

【0043】すなわち、本発明のラミネートフィルム
は、使用後に水に浸漬させておくことにより、つまりア
ルミニウム箔を構成中に含む基材とエチレン−メタクリ
ル酸共重合体層との間に水を浸透させることにより、容
易にアルミニウム箔を含む基材を剥離させることがで
き、誰もが簡単にかつ手早く、有効に廃棄することが可
能である。
That is, the laminated film of the present invention is soaked in water after use, that is, water is permeated between the base material containing the aluminum foil in the constitution and the ethylene-methacrylic acid copolymer layer. As a result, the base material containing the aluminum foil can be easily peeled off, and anyone can dispose of it easily and quickly and effectively.

【0044】また、前記基材にアンカーコート処理を行
う必要がないため、作業工程が簡略であり、エージング
期間の不要による製造工程の短縮化が図れ、更にはアン
カーコート剤塗布後の乾燥が不十分な場合の、残留溶剤
による包装内容物への着臭の可能性,溶剤の揮発による
作業環境の悪化,および防災上の問題等、非常に多くの
問題が解消されるものである。
Further, since it is not necessary to perform anchor coat treatment on the base material, the working process is simple, the manufacturing process can be shortened due to unnecessary aging period, and further, drying after applying the anchor coat agent is not required. In a sufficient case, a lot of problems such as the possibility of odor to the package contents due to residual solvent, deterioration of working environment due to volatilization of solvent, and disaster prevention problems will be solved.

【0045】[0045]

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明のラミネートフィルムの層構成を示す断
面説明図。
FIG. 1 is an explanatory sectional view showing a layer structure of a laminate film of the present invention.

【図2】本発明によるラミネートフィルムの製造工程の
要部概略を示す説明図。
FIG. 2 is an explanatory view showing an outline of a main part of a manufacturing process of a laminated film according to the present invention.

【符合の説明】[Explanation of sign]

1…軟質アルミニウム箔 2…ドライラミネート接着剤層 3…二軸延伸ポリエチレンテレフタレート(ナイロン)
フィルム 4…基材 5…エチレン−メタクリル酸共重合体樹脂 5’…エチレン−メタクリル酸共重合体樹脂の溶融状態
の薄膜 10…冷却ロール 20…T−ダイ 30…オゾン処理バー 40…ニップロール 50…コロナ放電処理装置
1 ... Soft aluminum foil 2 ... Dry laminate adhesive layer 3 ... Biaxially oriented polyethylene terephthalate (nylon)
Film 4 ... Base material 5 ... Ethylene-methacrylic acid copolymer resin 5 '... Molten thin film of ethylene-methacrylic acid copolymer resin 10 ... Cooling roll 20 ... T-die 30 ... Ozone treatment bar 40 ... Nip roll 50 ... Corona discharge treatment device

フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 FI 技術表示箇所 B32B 27/08 8413−4F 27/28 101 8413−4F 27/34 7421−4F 27/36 7421−4F B65D 65/40 D // B29K 55:00 67:00 77:00 B29L 9:00 (72)発明者 島谷 健 東京都台東区台東一丁目5番1号 凸版印 刷株式会社内Continuation of the front page (51) Int.Cl. 6 Identification number Reference number within the agency FI Technical display location B32B 27/08 8413-4F 27/28 101 8413-4F 27/34 7421-4F 27/36 7421-4F B65D 65 / 40 D // B29K 55:00 67:00 77:00 B29L 9:00 (72) Inventor Ken Shimatani 1-5-1 Taito, Taito-ku, Tokyo Toppan Printing Co., Ltd.

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】アルミニウム箔を構成中に含むラミネート
フィルムからなる基材に、エチレン−メタクリル酸共重
合体樹脂を押出ラミネートするラミネートフィルムの製
造方法において、 前記基材の接合面側を、二軸延伸ポリエチレンテレフタ
レートフィルムあるいは二軸延伸ナイロンフィルムと
し、前記接合面にインラインコロナ放電処理を施し、他
方、押出成形機のT−ダイより押出され、製膜されるエ
チレン−メタクリル酸共重合体樹脂の接合面側に、1g
/Nm3 以上のオゾンを含有する空気を、0.5Nm3
/hr以上の条件で吹き付けた後、両者を圧着させるこ
とを特徴とするラミネートフィルムの製造方法。
1. A method for producing a laminate film, wherein an ethylene-methacrylic acid copolymer resin is extrusion-laminated on a base material made of a laminate film containing an aluminum foil in its constitution, wherein the joint surface side of the base material is biaxial. A stretched polyethylene terephthalate film or a biaxially stretched nylon film is used, the joint surface is subjected to in-line corona discharge treatment, and on the other hand, an ethylene-methacrylic acid copolymer resin is extruded from a T-die of an extruder and formed into a film. 1g on the surface side
/ Nm 3 or more of the air containing ozone is 0.5 Nm 3
The method for producing a laminated film is characterized in that after spraying under the condition of not less than / hr, the both are pressure-bonded.
【請求項2】少なくとも、基材およびエチレン−メタク
リル酸共重合体樹脂層からなる構成のラミネートフィル
ムにおいて、 基材側の、エチレン−メタクリル酸共重合体樹脂層との
接合面を、二軸延伸ポリエチレンテレフタレートフィル
ムあるいは二軸延伸ナイロンフィルムとし、 前記接合面における接着強度が、乾燥状態および低湿度
状態では200gf/15mm以上であり、水分浸透時
には10gf/15mm以下であることを特徴とするラ
ミネートフィルム。
2. A laminate film having at least a base material and an ethylene-methacrylic acid copolymer resin layer, wherein a joint surface of the base material side with the ethylene-methacrylic acid copolymer resin layer is biaxially stretched. A laminate film comprising a polyethylene terephthalate film or a biaxially stretched nylon film, wherein the adhesive strength at the joint surface is 200 gf / 15 mm or more in a dry state and a low humidity state, and 10 gf / 15 mm or less when permeating water.
【請求項3】前記基材は、アルミニウム箔を構成中に含
むラミネートフィルムであることを特徴とする請求項2
に記載のラミネートフィルム。
3. The base material is a laminated film containing an aluminum foil in its constitution.
The laminated film according to.
JP02116294A 1994-02-18 1994-02-18 Laminated film and method for producing the same Expired - Fee Related JP3336719B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP02116294A JP3336719B2 (en) 1994-02-18 1994-02-18 Laminated film and method for producing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP02116294A JP3336719B2 (en) 1994-02-18 1994-02-18 Laminated film and method for producing the same

Publications (2)

Publication Number Publication Date
JPH07227932A true JPH07227932A (en) 1995-08-29
JP3336719B2 JP3336719B2 (en) 2002-10-21

Family

ID=12047225

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Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
JP (1) JP3336719B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998046425A1 (en) * 1997-04-15 1998-10-22 Tetra Laval Holdings & Finance S.A. A method for the production of a packaging laminate, and of packaging containers produced from the packaging laminate
NL1006109C2 (en) * 1997-05-22 1998-11-25 Hoogovens Staal Bv Method for coating a metallic substrate with thermoplastic coating material.
JP2009248377A (en) * 2008-04-02 2009-10-29 Du Pont Mitsui Polychem Co Ltd Laminate sheet for solar cells, and solar cell module using the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998046425A1 (en) * 1997-04-15 1998-10-22 Tetra Laval Holdings & Finance S.A. A method for the production of a packaging laminate, and of packaging containers produced from the packaging laminate
NL1006109C2 (en) * 1997-05-22 1998-11-25 Hoogovens Staal Bv Method for coating a metallic substrate with thermoplastic coating material.
WO1998052750A1 (en) * 1997-05-22 1998-11-26 Hoogovens Staal B.V. Method of coating a metallic substrate with thermoplastic coating material
JP2009248377A (en) * 2008-04-02 2009-10-29 Du Pont Mitsui Polychem Co Ltd Laminate sheet for solar cells, and solar cell module using the same

Also Published As

Publication number Publication date
JP3336719B2 (en) 2002-10-21

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