JP2004050446A - Multilayered film for packaging and packaging material - Google Patents

Multilayered film for packaging and packaging material Download PDF

Info

Publication number
JP2004050446A
JP2004050446A JP2002207490A JP2002207490A JP2004050446A JP 2004050446 A JP2004050446 A JP 2004050446A JP 2002207490 A JP2002207490 A JP 2002207490A JP 2002207490 A JP2002207490 A JP 2002207490A JP 2004050446 A JP2004050446 A JP 2004050446A
Authority
JP
Japan
Prior art keywords
layer
packaging
resin
multilayer film
ethylene
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
JP2002207490A
Other languages
Japanese (ja)
Other versions
JP4190817B2 (en
Inventor
Keiji Imai
今井 啓二
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.)
Sumitomo Bakelite Co Ltd
Original Assignee
Sumitomo Bakelite 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 Sumitomo Bakelite Co Ltd filed Critical Sumitomo Bakelite Co Ltd
Priority to JP2002207490A priority Critical patent/JP4190817B2/en
Publication of JP2004050446A publication Critical patent/JP2004050446A/en
Application granted granted Critical
Publication of JP4190817B2 publication Critical patent/JP4190817B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Wrappers (AREA)
  • Laminated Bodies (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To inexpensively provide a multilayered film for packaging having oxygen gas barrier properties, mechanical strength and sealability and excellent in surface printability. <P>SOLUTION: The multilayered film for packaging is formed by laminating the outermost layer (A) with a wet tension of 36 dyn/cm or more, an oxygen gas barrier layer (B), a polyamide resin layer (C) and a seal layer (D) by a coextrusion method using an adhesive resin layer and the total thickness thereof is 60 μm. The outermost layer resin is mainly manufactured from a copolyester resin, an ethylene/vinyl alcohol copolymer of which the ethylene copolymerization ratio is 38 - 47 mol% or copolymerized nylon with a melting point of 187 - 205°C. By this constitution, the surface printability of the outermost resin layer being a polyamide resin can be enhanced. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は食品等の包装分野において内容物の保存性の為にガスバリア性を有し、印刷される包装材料を使用する用途に関するものである。
【0002】
【従来の技術】
食品等の軟包装分野においては酸素ガスバリア性を備えた包装材料を用いて真空包装またはガス置換包装することにより、酸素ガスによる内容物の変質や腐敗を防ぎ保存性を高めてきた。包装材料には酸素ガスバリア性、機械的強度、ヒートシール性等が必要であり、ドライラミネート法、押し出しラミネート法、共押し出し法により多層化した包装材料が用いられてきた。
さらに包装された商品は品名、製造者、内容物、内容量、原材料・添加物など必要な表示を行うとともに意匠性により商品価値を高める為に多色の印刷を施した包装材料が必要とされており、現状ではO−PETやOPPなどの印刷用基材に多色印刷を行った後、酸素ガスバリア性を備えたフィルム及びシーラントフィルムとのドライラミネートを行っているが、少なくとも印刷後に1回以上のラミネート加工工程が必要であり、コスト高となる為に使用される用途が限定されてきた。
【0003】
そこで、共押し出し法により製造された酸素ガスバリア性、機械的強度、ヒートシール性等各機能を有する多層フィルムの外面に直接印刷することが試みられたが、インキの密着性が不充分であり、流通・販売の過程でインキ剥がれの問題が発生することがあり、さらには共押し出しにより積層する際に使用されている高融点の樹脂のために加工温度が高くなり製造条件幅が狭く、経済的な総厚みで外観、厚み精度、表面状態の均一な多層包装材料を安定して製造することが困難であった。
【0004】
【発明が解決しようとする課題】
本発明の目的とするところは食品等の包装材料として酸素ガスバリア性、機械的強度、シール性を備え、且つ外層表面の印刷適正に優れたフィルムを経済的に提供することにある。
【0005】
【課題を解決するための手段】
本発明は、
(1) 少なくとも2層からなる包装用多層フィルムであって、最外層(A)となる第1層の表面の濡れ張力が36dyn/cm以上であり、第1層と反対側表面に位置する第2層がシール層(D)であり、第1層及び第2層が共押し出し法により積層されたものであり、総厚みが60μm以下であることを特徴とする包装用多層フィルム、
(2) 第1層が、融点187〜205℃の共重合ナイロンを主とするポリアミド系樹脂から形成されてなる(1)項記載の包装用多層フィルム、
(3) 第1層が、エチレン共重合比率38〜47mol%のエチレン−ビニルアルコール共重合体から形成され、第1層と第2層との間にポリアミド樹脂層(C)が積層されてなる(1)項記載の包装用多層フィルム、
(4) 第1層が、共重合ポリエステル樹脂から形成され、第1層と第2層との間に酸素ガスバリア層(B)及びポリアミド系樹脂層(C)が積層されてなる(1)項記載の包装用多層フィルム、
(5) (1)〜(4)項のいずれか1項に記載の包装用多層フィルムの表面に印刷が施されてなる包装材
である。
【0006】
【発明の実施の形態】
本発明の多層フィルムの第1層は多層フィルムの最外層(A)となる層であり、フィルム化した際の表面のJIS K−6768に従った濡れ試薬による濡れ張力が36dyn/cm以上のものである。第1層を構成する、濡れ試薬による濡れ張力が36dyn/cm以上の樹脂としては、共重合ナイロンを主とするポリアミド系樹脂、エチレン−ビニルアルコール共重合体及び共重合ポリエステル系樹脂が好ましい。
【0007】
最外層に、濡れ試薬による濡れ張力が36dyn/cm未満の樹脂を用いた場合、フィルムとした場合の表面活性に乏しく濡れ張力が低いために印刷インキをはじき、印刷抜け、印刷飛び、インキの密着不良が発生して好ましくない。最外層に好ましくない樹脂の例としては、ポリプロピレン系樹脂、ポリエチレン系樹脂、ポリスチレン系樹脂などが挙げられる。
本発明の第1層に用いることのできる共重合ナイロンを主とするポリアミド系樹脂は、融点187〜205℃のものである。また、必要に応じて芳香族ナイロンまたは非晶性ナイロンを3〜40重量%混合することにより共押し出しによる薄いフィルムへの加工性が向上し、厚み精度、外観、表面の均一性を良好とすることができる。
【0008】
本発明の第1層に共重合ナイロンを主とするポリアミド系樹脂を用いた場合、第1層により、酸素ガスバリア性、機械的強度をも確保することができるので、本発明の多層フィルムは、第1層とシール層である第2層との2層で構成することができるが、更に酸素ガスバリア性、機械的強度を確保するため、第1層と第2層の間に酸素ガスバリア層(B)及び/又はポリアミド樹脂層(C)を加えて構成することもできる。
【0009】
本発明に用いられる酸素ガスバリア層(B)を構成する樹脂はエチレン−ビニルアルコール共重合体、ポリ塩化ビニリデン樹脂、ポリアミド系樹脂などを用いることができる。
ポリアミド系樹脂層(C)に用いるポリアミド系樹脂としては6−ナイロン、11ナイロン、12ナイロン、6・6ナイロン、6−10共重合ナイロン、6−12共重合ナイロン、6−6・6共重合ナイロン、芳香族ナイロン及び非晶性ナイロンを単独または2種類以上をブレンドしたものを用いることができ、要求されるフィルムの機械的強度に応じて選択され、厚み比率も決定される。
【0010】
本発明の第1層に用いることのできるエチレン−ビニルアルコール共重合体はエチレン共重合比率が38〜47mol%のものである。エチレン共重合比率38〜47mol%であるエチレン−ビニルアルコール共重合体を用いることにより共押し出しによる薄いフィルムへの加工性が向上し、厚み精度、外観、表面の均一性を良好とすることができる。
【0011】
本発明の第1層にエチレン−ビニルアルコール共重合体を用いた場合、第1層により、酸素ガスバリア性をも確保することができるので、本発明の多層フィルムは、第1層とシール層である第2層との間にフィルムの機械的強度を確保するためのポリアミド系樹脂層(C)を設け、3層で構成することができるが、更に酸素ガスバリア性を向上させるために、第1層と第2層の間に、ポリアミド系樹脂層(C)のほか、酸素ガスバリア層(B)を加えて構成することもできる。
本発明の第1層に用いることのできる共重合ポリエステルは、テレフタル酸の一部を他の二塩基酸に置き換えたもの、エチレングリコールの一部を他のアルコールで置き換えたものが用いられ、共重合とすることで共押し出しによる薄いフィルムへの加工性が向上し、厚み精度、外観、表面の均一性を良好とすることができる。例えばテレフタル酸の一部をイソフタル酸に置き換えたもの、エチレングリコールの一部を1,4−シクロヘキサンジメタノールに置き換えたものが用いられる。
【0012】
本発明の第1層に共重合ポリエステルを用いた場合、本発明の多層フィルムは、第1層とシール層である第2層との間に酸素ガスの透過を遮断する酸素ガスバリア層(B)及びフィルムの機械的強度を確保するためのポリアミド系樹脂層(C)を設け、4層で構成することができる。
本発明の第2層であるシール層(D)を構成する樹脂としては低密度ポリエチレン(LDPE)、直鎖状低密度ポリエチレン(LLDPE)、中密度ポリエチレン(MDPE)、高密度ポリエチレン(HDPE)、ポリプロピレン(PP)、エチレン−酢酸ビニル共重合体(EVA)、アイオノマー(ION)、エチレン−アクリレート共重合体(EAA)、エチレン−メタクリレート共重合体(EMAA)、エチレン−メチルメタクリレート共重合体(EMMA)、エチレン−エチルアクリレート共重合体(EEA)、エチレン−メチルアクリレート共重合体(EMA)を単独または2種類以上をブレンドしたものであり、シールする相手材に応じて選択することが出来る。
【0013】
本発明の多層フィルムは共押し出し法によって製造される。各層の間には必要に応じて層間の接着性を高めるために接着剤層を設けても良い。本発明の多層フィルムは、最外層に印刷適性に優れた樹脂を配することにより1工程で製造した多層フィルムに直接印刷できることから加工コストを下げ、従来使用されなかった用途にも酸素ガスバリア性を備え高度な印刷を施した包装用フィルムを用いることが出来る。
本発明の多層フィルムの第1層表面にグラビア印刷等を施すことにより商品価値の高い、多色印刷の施された包装材を得ることができる。
【0014】
【実施例】
以下に実施例を示して説明するが、本発明はこれらの例によって限定されるものではない。表1の層構成、各層厚みで実施例1〜3、比較例1〜3の50μmまたは60μmの多層フィルムを共押し出し法により作成し、表面の濡れ張力、目視での外観、印刷適性(インキののり、インキ密着性)、酸素ガス透過量を測定・評価した。結果を表1にまとめた。各々の評価方法は次の通りである。
表面の濡れ張力:JIS K6768に従い試薬を用いて測定した。
外観(○:透明性・光沢・均一性良好、×:光沢不良、ムラ有り)
印刷適性:外刷り用汎用インキ(アゾ系顔料、ベース樹脂がポリアミド樹脂−硝化綿)をグラビア印刷機によりフィルム表面に印刷し、条件が安定した部分300mm幅×100mの外観を目視で検査し、印刷抜け、印刷飛びを確認した。(○:印刷抜け・印刷飛び無し、△:部分的に印刷抜けまたは印刷飛びが見られた、×:印刷抜けまたは印刷飛びが多数見られた)
また、JIS K5400に従いXカットテープ法でインキの密着性を評価した。
酸素ガス透過量:JIS K7126に従いMOCON社のOXTRAN−TWINにより23℃−65%で測定した。
【0015】
使用した原料及びフィルムは次の通りであった。
Co−PET  : 共重合ポリエステル樹脂(共重合成分1,4−シクロヘキサンジメタノール) Tg=81℃
PET     : ポリエステル樹脂(ホモポリマー)  mp=245℃
EVOH1   : エチレン−ビニルアルコール共重合体 エチレン比率32mol%
EVOH2   : エチレン−ビニルアルコール共重合体 エチレン比率44mol%
6−NY    : 6−ナイロン樹脂 MP=220℃
6−6・6NY : 6−6・6共重合ナイロン樹脂 MP=198℃
A−NY    : 非晶性ナイロン樹脂 Tg=125℃
EVA     : エチレン−酢酸ビニル共重合体 VA=10%
LLDPE   : 直鎖状低密度ポリエチレン MP=109℃
PP      : ランダムポリプロピレン MP=147℃
Ad1     : 酸変性エチレン−αオレフィン共重合体
Ad2     : 酸変性低密度ポリエチレン
Ad3     : 酸変性直鎖状低密度ポリエチレン
Ad4     : 酸変性ポリプロピレン
【0016】
【表1】

Figure 2004050446
【0017】
【発明の効果】
本発明に従うと、従来印刷したフィルムに酸素ガスバリア性、機械的強度及びシール性を有するフィルムを貼り合わせていたためにコストアップとなり、使用される用途が限定されていたが、1工程で包装材料として必要な機能を有し、外観良好で表面の印刷適性に優れた多層フィルムを経済的に製造することができ、さらに広い用途に安価に高性能の包装用多層フィルムを供給することが出来る。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to the use of printed packaging materials having a gas barrier property for preservation of contents in the field of packaging of foods and the like.
[0002]
[Prior art]
2. Description of the Related Art In the field of flexible packaging of foods and the like, by using a packaging material having an oxygen gas barrier property and performing vacuum packaging or gas replacement packaging, alteration and decay of contents due to oxygen gas have been prevented, and preservability has been improved. The packaging material must have oxygen gas barrier properties, mechanical strength, heat sealing properties, and the like, and multilayered packaging materials by dry lamination, extrusion lamination, and co-extrusion have been used.
In addition, the packaged products need to be labeled with the necessary information such as product name, manufacturer, contents, contents, raw materials and additives, and packaging materials with multicolor printing are required to enhance the product value by design. Currently, after performing multicolor printing on a printing substrate such as O-PET or OPP, dry lamination with a film having an oxygen gas barrier property and a sealant film is performed, but at least once after printing. The above-mentioned laminating process is required, and the applications used to increase the cost have been limited.
[0003]
Therefore, it was attempted to directly print on the outer surface of a multilayer film having various functions such as oxygen gas barrier properties, mechanical strength, and heat sealing properties manufactured by a co-extrusion method, but the ink adhesion was insufficient. In the process of distribution and sales, the problem of ink peeling may occur.Furthermore, due to the high melting point resin used when laminating by co-extrusion, the processing temperature increases, the range of manufacturing conditions is narrow, and economical It has been difficult to stably produce a multilayer packaging material having a uniform overall appearance, thickness accuracy, and surface condition with a large total thickness.
[0004]
[Problems to be solved by the invention]
An object of the present invention is to economically provide a film having oxygen gas barrier properties, mechanical strength, and sealability as a packaging material for foods and the like, and excellent in printability of the outer layer surface.
[0005]
[Means for Solving the Problems]
The present invention
(1) A multi-layer film for packaging comprising at least two layers, wherein the first layer, which is the outermost layer (A), has a surface wetting tension of 36 dyn / cm or more and is located on the surface opposite to the first layer. A multilayer film for packaging, wherein two layers are a seal layer (D), a first layer and a second layer are laminated by a co-extrusion method, and a total thickness is 60 μm or less;
(2) The multilayer film for packaging according to (1), wherein the first layer is formed from a polyamide resin mainly composed of copolymerized nylon having a melting point of 187 to 205 ° C.
(3) The first layer is formed from an ethylene-vinyl alcohol copolymer having an ethylene copolymerization ratio of 38 to 47 mol%, and the polyamide resin layer (C) is laminated between the first layer and the second layer. (1) The multilayer film for packaging according to the above,
(4) The first layer is formed from a copolymerized polyester resin, and an oxygen gas barrier layer (B) and a polyamide resin layer (C) are laminated between the first layer and the second layer (1). The described multilayer film for packaging,
(5) A packaging material obtained by printing on the surface of the multilayer film for packaging according to any one of (1) to (4).
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
The first layer of the multilayer film of the present invention is a layer to be the outermost layer (A) of the multilayer film, and has a wetting tension of 36 dyn / cm or more by a wetting reagent according to JIS K-6768 on the surface when formed into a film. It is. As the resin constituting the first layer and having a wetting tension of 36 dyn / cm or more by a wetting reagent, a polyamide resin mainly composed of copolymerized nylon, an ethylene-vinyl alcohol copolymer, and a copolymerized polyester resin are preferable.
[0007]
When a resin whose wetting tension by a wetting reagent is less than 36 dyn / cm is used for the outermost layer, printing ink is repelled due to poor surface activity and a low wetting tension in the case of a film, printing omission, print skipping, ink adhesion Failure occurs, which is not preferable. Examples of the resin that is not preferable for the outermost layer include a polypropylene resin, a polyethylene resin, and a polystyrene resin.
The polyamide resin mainly composed of copolymerized nylon which can be used for the first layer of the present invention has a melting point of 187 to 205 ° C. Further, by mixing 3 to 40% by weight of an aromatic nylon or an amorphous nylon as required, the processability into a thin film by co-extrusion is improved, and the thickness accuracy, appearance, and surface uniformity are improved. be able to.
[0008]
When a polyamide resin mainly composed of copolymerized nylon is used for the first layer of the present invention, the first layer can also secure oxygen gas barrier properties and mechanical strength. Although it can be composed of two layers of the first layer and the second layer which is a seal layer, in order to further secure oxygen gas barrier properties and mechanical strength, an oxygen gas barrier layer ( B) and / or a polyamide resin layer (C) may be added.
[0009]
As the resin constituting the oxygen gas barrier layer (B) used in the present invention, an ethylene-vinyl alcohol copolymer, a polyvinylidene chloride resin, a polyamide resin or the like can be used.
Examples of the polyamide resin used for the polyamide resin layer (C) include 6-nylon, 11 nylon, 12 nylon, 6.6 nylon, 6-10 copolymer nylon, 6-12 copolymer nylon, and 6-6.6 copolymer. Nylon, aromatic nylon and amorphous nylon can be used singly or in a blend of two or more, and are selected according to the required mechanical strength of the film, and the thickness ratio is also determined.
[0010]
The ethylene-vinyl alcohol copolymer that can be used in the first layer of the present invention has an ethylene copolymerization ratio of 38 to 47 mol%. By using an ethylene-vinyl alcohol copolymer having an ethylene copolymerization ratio of 38 to 47 mol%, processability into a thin film by coextrusion is improved, and thickness accuracy, appearance, and surface uniformity can be improved. .
[0011]
When an ethylene-vinyl alcohol copolymer is used for the first layer of the present invention, the first layer can also secure oxygen gas barrier properties. A polyamide resin layer (C) for securing the mechanical strength of the film is provided between a certain second layer and the polyamide resin layer (C). The first resin layer can be composed of three layers. An oxygen gas barrier layer (B) may be added between the layer and the second layer in addition to the polyamide resin layer (C).
As the copolymerized polyester that can be used for the first layer of the present invention, one obtained by replacing part of terephthalic acid with another dibasic acid and one obtained by replacing part of ethylene glycol with another alcohol are used. By the polymerization, workability into a thin film by co-extrusion is improved, and thickness accuracy, appearance, and surface uniformity can be improved. For example, those in which part of terephthalic acid is replaced by isophthalic acid, and those in which part of ethylene glycol is replaced by 1,4-cyclohexanedimethanol are used.
[0012]
When the copolyester is used for the first layer of the present invention, the multilayer film of the present invention provides an oxygen gas barrier layer (B) for blocking the transmission of oxygen gas between the first layer and the second layer serving as the seal layer. And a polyamide-based resin layer (C) for securing the mechanical strength of the film.
As the resin constituting the seal layer (D) as the second layer of the present invention, low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), medium-density polyethylene (MDPE), high-density polyethylene (HDPE), Polypropylene (PP), ethylene-vinyl acetate copolymer (EVA), ionomer (ION), ethylene-acrylate copolymer (EAA), ethylene-methacrylate copolymer (EMAA), ethylene-methyl methacrylate copolymer (EMMA) ), Ethylene-ethyl acrylate copolymer (EEA), and ethylene-methyl acrylate copolymer (EMA) alone or as a blend of two or more types, and can be selected according to the mating material to be sealed.
[0013]
The multilayer film of the present invention is manufactured by a co-extrusion method. An adhesive layer may be provided between the layers as needed to enhance the adhesion between the layers. The multilayer film of the present invention is capable of directly printing on a multilayer film manufactured in one step by arranging a resin having excellent printability on the outermost layer, thereby lowering processing costs and improving oxygen gas barrier properties even in applications not conventionally used. A highly-printed packaging film can be used.
By applying gravure printing or the like to the surface of the first layer of the multilayer film of the present invention, a packaging material having high commercial value and subjected to multicolor printing can be obtained.
[0014]
【Example】
Hereinafter, the present invention will be described with reference to examples, but the present invention is not limited to these examples. The multilayer films of Examples 1 to 3 and Comparative Examples 1 to 3 having a thickness of 50 μm or 60 μm were prepared by the co-extrusion method with the layer configuration and the thickness of each layer shown in Table 1, and the wetting tension on the surface, visual appearance, printability (ink Glue, ink adhesion) and the amount of oxygen gas permeation were measured and evaluated. The results are summarized in Table 1. Each evaluation method is as follows.
Surface wetting tension: Measured using a reagent according to JIS K6768.
Appearance (○: good transparency, gloss, uniformity, ×: poor gloss, unevenness)
Printability: A general-purpose ink for external printing (azo pigment, base resin is polyamide resin-nitrified cotton) is printed on the film surface by a gravure printing machine, and the appearance of a portion where conditions are stable, 300 mm width x 100 m, is visually inspected. Print omissions and print skips were confirmed. (O: Missing print / no print skip, Δ: Partially missed print or skipped print, X: Many missed print or skipped print)
Further, the adhesion of the ink was evaluated by the X-cut tape method according to JIS K5400.
Oxygen gas permeation amount: Measured at 23 ° C.-65% by OXTRAN-TWIN manufactured by MOCON in accordance with JIS K7126.
[0015]
The raw materials and films used were as follows.
Co-PET: Copolyester resin (copolymer component 1,4-cyclohexanedimethanol) Tg = 81 ° C.
PET: polyester resin (homopolymer) mp = 245 ° C.
EVOH1: ethylene-vinyl alcohol copolymer, ethylene ratio 32 mol%
EVOH2: ethylene-vinyl alcohol copolymer, ethylene ratio 44 mol%
6-NY: 6-nylon resin MP = 220 ° C
6-6 / 6NY: 6-6.6 copolymer nylon resin MP = 198 ° C
A-NY: Amorphous nylon resin Tg = 125 ° C
EVA: ethylene-vinyl acetate copolymer VA = 10%
LLDPE: Linear low density polyethylene MP = 109 ° C
PP: random polypropylene MP = 147 ° C
Ad1: acid-modified ethylene-α-olefin copolymer Ad2: acid-modified low-density polyethylene Ad3: acid-modified linear low-density polyethylene Ad4: acid-modified polypropylene
[Table 1]
Figure 2004050446
[0017]
【The invention's effect】
According to the present invention, the cost is increased because a film having an oxygen gas barrier property, a mechanical strength, and a sealing property is bonded to a conventionally printed film, and the use to be used is limited. It is possible to economically produce a multilayer film having necessary functions, good appearance and excellent surface printability, and to supply a high-performance packaging film at a low cost for a wide range of applications.

Claims (5)

少なくとも2層からなる包装用多層フィルムであって、最外層(A)となる第1層の表面の濡れ張力が36dyn/cm以上であり、第1層と反対側表面に位置する第2層がシール層(D)であり、第1層及び第2層が共押し出し法により積層されたものであり、総厚みが60μm以下であることを特徴とする包装用多層フィルム。A multilayer film for packaging consisting of at least two layers, wherein the surface of the first layer which is the outermost layer (A) has a wetting tension of 36 dyn / cm or more, and the second layer located on the surface opposite to the first layer is A multilayer film for packaging, which is a seal layer (D), wherein a first layer and a second layer are laminated by a co-extrusion method, and has a total thickness of 60 μm or less. 第1層が、融点187〜205℃の共重合ナイロンを主とするポリアミド系樹脂から形成されてなる請求項1記載の包装用多層フィルム。The multilayer film for packaging according to claim 1, wherein the first layer is formed from a polyamide resin mainly composed of copolymerized nylon having a melting point of 187 to 205C. 第1層が、エチレン共重合比率38〜47mol%のエチレン−ビニルアルコール共重合体から形成され、第1層と第2層との間にポリアミド樹脂層(C)が積層されてなる請求項1記載の包装用多層フィルム。The first layer is formed from an ethylene-vinyl alcohol copolymer having an ethylene copolymerization ratio of 38 to 47 mol%, and a polyamide resin layer (C) is laminated between the first layer and the second layer. The multilayer film for packaging according to the above. 第1層が、共重合ポリエステル樹脂から形成され、第1層と第2層との間に酸素ガスバリア層(B)及びポリアミド系樹脂層(C)が積層されてなる請求項1記載の包装用多層フィルム。The packaging according to claim 1, wherein the first layer is formed from a copolymerized polyester resin, and an oxygen gas barrier layer (B) and a polyamide resin layer (C) are laminated between the first layer and the second layer. Multilayer film. 請求項1〜4のいずれか1項に記載の包装用多層フィルムの表面に印刷が施されてなる包装材。A packaging material obtained by printing on the surface of the multilayer film for packaging according to any one of claims 1 to 4.
JP2002207490A 2002-07-16 2002-07-16 Multilayer film for packaging and packaging material Expired - Lifetime JP4190817B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002207490A JP4190817B2 (en) 2002-07-16 2002-07-16 Multilayer film for packaging and packaging material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002207490A JP4190817B2 (en) 2002-07-16 2002-07-16 Multilayer film for packaging and packaging material

Publications (2)

Publication Number Publication Date
JP2004050446A true JP2004050446A (en) 2004-02-19
JP4190817B2 JP4190817B2 (en) 2008-12-03

Family

ID=31931926

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002207490A Expired - Lifetime JP4190817B2 (en) 2002-07-16 2002-07-16 Multilayer film for packaging and packaging material

Country Status (1)

Country Link
JP (1) JP4190817B2 (en)

Also Published As

Publication number Publication date
JP4190817B2 (en) 2008-12-03

Similar Documents

Publication Publication Date Title
US11806745B2 (en) Nonconductive films for lighter than air balloons
US20150183192A1 (en) Printed polyster film based laminate, method of making and application thereof
JP2004001888A (en) Food packaging bag
JP2000263681A (en) Laminated material and packaging container using the same
KR101663497B1 (en) Linear Low Density Polyethylene Complex Film and Packing Material Comprising The Same
JP2000263727A (en) Laminated material and packaging container using the same
JP2000263725A (en) Laminated material and packaging container using the same
US11738537B2 (en) Nonconductive films for lighter than air balloons
JP2004050446A (en) Multilayered film for packaging and packaging material
CN205871389U (en) Range upon range of membrane of transparent choke and used its electronics paper
EP3986711B1 (en) Recyclable film and packaging
JP2004098536A (en) Surface printable multilayer film for packaging and package
JP2000263726A (en) Laminated material and packaging container using the same
WO2019189479A1 (en) Packaging material and retort pouch or microwavable pouch provided with packaging material
JP2004050517A (en) Multilayered film for packaging
JP2000233468A (en) Laminate material and packing container using the same
JP7255346B2 (en) Laminated sheets and paper containers
JP7404752B2 (en) Laminates for highly resistant packaging materials
JP6988253B2 (en) Laminate and packaging bag with it
JP2006321495A (en) Liquid paper-container
WO2024143301A1 (en) Transfer film
JP3641325B2 (en) Coextruded composite film for laminating
JP2000263683A (en) Laminated material and packaging container using the same
JP2005059329A (en) Laminated material having gas barrier properties
JP2000071400A (en) Low elution packing material and package using the same

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20050531

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20070620

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20080701

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20080822

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20080916

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20080917

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110926

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Ref document number: 4190817

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120926

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130926

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140926

Year of fee payment: 6

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

EXPY Cancellation because of completion of term