JPS63242541A - Packaging material - Google Patents
Packaging materialInfo
- Publication number
- JPS63242541A JPS63242541A JP7733487A JP7733487A JPS63242541A JP S63242541 A JPS63242541 A JP S63242541A JP 7733487 A JP7733487 A JP 7733487A JP 7733487 A JP7733487 A JP 7733487A JP S63242541 A JPS63242541 A JP S63242541A
- Authority
- JP
- Japan
- Prior art keywords
- film
- packaging material
- biaxially stretched
- polyamide film
- laminated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000005022 packaging material Substances 0.000 title claims description 10
- 239000004952 Polyamide Substances 0.000 claims description 11
- 239000004743 Polypropylene Substances 0.000 claims description 11
- 229920002647 polyamide Polymers 0.000 claims description 11
- -1 polypropylene Polymers 0.000 claims description 11
- 229920001155 polypropylene Polymers 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 238000009832 plasma treatment Methods 0.000 claims description 7
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 5
- 229920000098 polyolefin Polymers 0.000 claims description 4
- 239000012790 adhesive layer Substances 0.000 claims 1
- 230000001954 sterilising effect Effects 0.000 description 12
- 238000004659 sterilization and disinfection Methods 0.000 description 12
- 239000000853 adhesive Substances 0.000 description 11
- 230000001070 adhesive effect Effects 0.000 description 11
- 229920006233 biaxially oriented polyamide Polymers 0.000 description 6
- 238000003851 corona treatment Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000012948 isocyanate Substances 0.000 description 2
- 150000002513 isocyanates Chemical class 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920006284 nylon film Polymers 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000009820 dry lamination Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000005003 food packaging material Substances 0.000 description 1
- 238000007756 gravure coating Methods 0.000 description 1
- 239000005001 laminate film Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920005906 polyester polyol Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、レトルト殺菌時及びレトルト殺菌後の食品の
保存性の優れたレトルト殺菌用包装材料に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a packaging material for retort sterilization that has excellent preservation properties of foods during and after retort sterilization.
食品用包装材料のうち、透明なレトルト殺菌用包装材料
として、二軸延伸ポリアミドフィルムと無延伸ポリプロ
ピレンフィルムの積層体が使用されている。なお透明レ
トルト殺菌用包装材料にガスバリヤ−性が要求される場
合には、二軸延伸ポリアミドフィルムの片面にポリ塩化
ビニリデン樹脂をコーティングしたにコートナイロンフ
ィルムが使用されている。いずれの場合にも、これらの
積層体の製造方法としては、二液型接着剤を介在させた
ドライラミネーション法が用いられている。Among food packaging materials, a laminate of a biaxially stretched polyamide film and an unstretched polypropylene film is used as a transparent packaging material for retort sterilization. When a transparent retort sterilization packaging material is required to have gas barrier properties, a coated nylon film is used, in which one side of a biaxially oriented polyamide film is coated with a polyvinylidene chloride resin. In either case, a dry lamination method using a two-component adhesive is used to manufacture these laminates.
この場合、未処理の二軸延伸ポリアミドフィルムと無延
伸ポリプロピレンフィルムでは接着力が弱く、その為に
従来は二軸延伸ポリアミドフィルムと無延伸ポリプロピ
レンフィルムの各々の被積層面にコロナ放電処理を施し
、その後に接着剤を介在させて積層体を得ていた。In this case, the untreated biaxially oriented polyamide film and the unoriented polypropylene film have weak adhesive strength, so conventionally, the laminated surfaces of the biaxially oriented polyamide film and the unoriented polypropylene film are subjected to corona discharge treatment. After that, an adhesive was interposed to obtain a laminate.
しかしながら、上記コロナ放電処理を施して接着力を強
くしているにもかかわらず、レトルト殺菌という極めて
過酷な環境下では、ポリアミドフィルムの吸湿性の為に
、二軸延伸ポリアミドフィルムと無延伸ポリプロピレン
フィルムとが＠離してしまい、しばしば大きな問題とな
っている。However, despite the above-mentioned corona discharge treatment to strengthen the adhesive strength, biaxially oriented polyamide film and unstretched polypropylene film are This often causes a big problem.
本発明は透明性を有するレトルト殺菌用包装材料に関す
るものであり、特に優れたレトルト殺菌適性を有する包
装材料を提供するものである。The present invention relates to a transparent packaging material for retort sterilization, and particularly provides a packaging material having excellent retort sterilization suitability.
本発明は、二軸延伸ポリアミドフィルムと無延伸ポリプ
ロピレンフィルムのポリオレフィンフィルムとの積層に
於て、二軸延伸ポリアミドフィルムの被積層面を、あら
かじめ窒素ガス又は少なくとも窒素ガスを含有する混合
ガスにより低温プラズマ処理し、接着剤を介在させてポ
リオレフィンフィルムと積層することを特徴とする包装
材料に関する。即ち、透明性を有するレトルト殺菌用包
装材料を構成する二軸延伸ポリアミドフィルムと無延伸
ポリプロピレンフィルムとの積層に於て、二軸延伸ポリ
アミドフィルムの被積層面だけをあらかじめ窒素ガス又
は少なくとも窒素ガスを含有する混合ガスにより低温プ
ラズマ処理する事により、従来の二軸延伸ポリアミドフ
ィルムと無延伸ポリプロピレンフィルム等のポリオレフ
ィンフィルムとの両方の被積層面をコロナ放電処理する
場合よりも、レトルト殺菌時あるいはレトルト殺菌後の
該積層体の接着強度が極めて高くかつ安定していること
を見い出した。In the present invention, in laminating a biaxially stretched polyamide film and a polyolefin film of an unstretched polypropylene film, the surface of the biaxially stretched polyamide film to be laminated is heated in advance by low-temperature plasma plasma using nitrogen gas or a mixed gas containing at least nitrogen gas. The present invention relates to a packaging material characterized in that it is treated and laminated with a polyolefin film with an intervening adhesive. That is, in laminating a biaxially stretched polyamide film and an unstretched polypropylene film constituting a transparent packaging material for retort sterilization, only the surface of the biaxially stretched polyamide film to be laminated is exposed to nitrogen gas or at least nitrogen gas in advance. By performing low-temperature plasma treatment using the mixed gas contained in the mixture, it is easier to perform retort sterilization or retort sterilization than when conventional corona discharge treatment is applied to the laminated surfaces of both biaxially oriented polyamide film and polyolefin film such as unoriented polypropylene film. It was found that the adhesive strength of the resulting laminate was extremely high and stable.
なお、本発明に於る二軸延伸ポリアミドフィルムにはす
でに記述したにコートナイロンフィルムも含まれる。更
に接着剤には、汎用の二液型であるイソシアネート／ポ
リエステルポリオール″、イソシアネート／ポリエーテ
ルポリオール系接着剤を用いることができる。Incidentally, the biaxially stretched polyamide film in the present invention also includes the coated nylon film already described. Further, as the adhesive, a general-purpose two-component type isocyanate/polyester polyol'' or isocyanate/polyether polyol type adhesive can be used.
また更に、本発明に於る低温プラズマ処理とは、高層液
、マイクロ波のいずれでもよく、好ましくは出力３００
Ｗ〜１５００Ｗ、真空度０．１トール〜ｌＯトール、処
理時間１０秒〜６０秒の条件である。Furthermore, the low-temperature plasma treatment in the present invention may be performed using either high-temperature liquid or microwave, preferably with an output of 300
The conditions were W to 1500 W, degree of vacuum 0.1 Torr to 10 Torr, and processing time 10 seconds to 60 seconds.
以下、実施例により更に詳細な説明とする。A more detailed explanation will be given below with reference to Examples.
（実 施 例〕
（１）厚み１５μの二軸延伸ポリアミドフィルム（ユニ
チカ員社製、商品名エンブレム）の片面を下記条件によ
り低温プラズマ処理した。(Example) (1) One side of a biaxially stretched polyamide film (manufactured by Unitika Co., Ltd., trade name: Emblem) having a thickness of 15 μm was subjected to low-temperature plasma treatment under the following conditions.
く低温プラズマ処理条件〉
イ）低温プラズマ処理装置；■東芝社製ＴＭＺ−４０７
２０）使用ガス；窒素
ハ）出 力； １．ＯＯＯｗａｔｔ
二）真空度 ； １．０ｔｏｒｒ
ホ）処理時間：３０秒
（２）次に下記組成の接着剤を用いて、＋１１で得られ
た低温プラズマ処理済の二軸延伸ポリアミドフィルムの
処理面上に、格子彫刻？５７−１３５μ版を用いてグラ
ビアコートシ、乾燥８５〜９０℃、スピード２０ｍ／麟
１１１ ％ ７ ミロール温度７０℃、ニップロール圧
２ ｋｇ ／ ｃｓの条件で、厚み６０μの無延伸ポリ
プロピレンフィルム（東し社製トレファン３９３１）と
ドライラミネートし、その後、温度４（ｌで７日間エー
ジングして積層フィルム■を得た。Low-temperature plasma treatment conditions> a) Low-temperature plasma treatment equipment; ■TMZ-407 manufactured by Toshiba Corporation
20) Gas used; Nitrogen c) Output; 1. OOOwatt 2) Degree of vacuum; 1.0 torr e) Processing time: 30 seconds (2) Next, using an adhesive with the following composition, apply it to the treated surface of the low-temperature plasma-treated biaxially stretched polyamide film obtained in +11. , lattice sculpture? Gravure coating using a 57-135μ plate, drying at 85-90°C, speed 20m/111%, roll temperature 70°C, nip roll pressure 2kg/cs, a 60μ thick unstretched polypropylene film (Toshisha Co., Ltd.) The film was dry-laminated with TORAYFAN 3931 (manufactured by Torefan 3931), and then aged at a temperature of 4 (L) for 7 days to obtain a laminated film (2).
〈接着剤の組成〉
（３）比較の為、該二軸延伸ポリアミドフィルムをコロ
ナ処理して、（２）に記載した方法で該無延伸ポリプロ
ピレンフィルムとドライラミネートし積層フィルム■を
得た。<Composition of Adhesive> (3) For comparison, the biaxially stretched polyamide film was corona treated and dry laminated with the unstretched polypropylene film using the method described in (2) to obtain a laminate film (2).
（４）次に（２）、（３）で得られた積層フィルム■、
■を用いて、それぞれ無延伸ポリプロピレンフィルム側
を内層としてヒートシールにより袋を作り、水を内容物
と仮想して充填、シールし、その後温度１２０℃、時間
３０分の条件下でレトルト殺菌した。(4) Next, the laminated film ■ obtained in (2) and (3),
Using (2), a bag was made by heat sealing with the unstretched polypropylene film side as the inner layer, filled and sealed with water as the content, and then retort sterilized at a temperature of 120° C. for 30 minutes.
レトルト殺菌前後の積層フィルムの物性は下記表−１の
通りであり、プラズマ処理効果が極めて良い事がわかっ
た。The physical properties of the laminated film before and after retort sterilization are shown in Table 1 below, and it was found that the plasma treatment effect was extremely good.
本発明は、以上の構成からなるので、レトルト殺菌用包
装材料の外層として二軸延伸ポリアミドフィルムを用い
ても、レトルト殺菌後の接着強度の低下が小さく、実ｌ
に供することができる。Since the present invention has the above configuration, even if a biaxially oriented polyamide film is used as the outer layer of the packaging material for retort sterilization, the decrease in adhesive strength after retort sterilization is small, and it is practical.
It can be provided to
Claims (1)
ムと無延伸ポリプロピレンフィルム等のポリオレフィン
フィルムの積層体に於て、該二軸延伸ポリアミドフィル
ムの被積層面を、窒素ガス又は少なくとも窒素ガスを含
有する混合ガスにより低温プラズマ処理することを特徴
とする包装材料。(1) In a laminate of a biaxially stretched polyamide film and a polyolefin film such as an unstretched polypropylene film, which are interposed with an adhesive layer, the surface to be laminated of the biaxially stretched polyamide film is heated with nitrogen gas or at least nitrogen gas. A packaging material characterized by being subjected to low-temperature plasma treatment using a mixed gas contained therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7733487A JPS63242541A (en) | 1987-03-30 | 1987-03-30 | Packaging material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7733487A JPS63242541A (en) | 1987-03-30 | 1987-03-30 | Packaging material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63242541A true JPS63242541A (en) | 1988-10-07 |
Family
ID=13631025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7733487A Pending JPS63242541A (en) | 1987-03-30 | 1987-03-30 | Packaging material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63242541A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008029733A1 (en) * | 2006-09-08 | 2008-03-13 | Toppan Printing Co., Ltd. | Multilayer body |
| JP2011083894A (en) * | 2009-10-13 | 2011-04-28 | Mitsubishi Plastics Inc | Surface-treated laminated polyamide based film and method for producing the same |
-
1987
- 1987-03-30 JP JP7733487A patent/JPS63242541A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008029733A1 (en) * | 2006-09-08 | 2008-03-13 | Toppan Printing Co., Ltd. | Multilayer body |
| US8628638B2 (en) | 2006-09-08 | 2014-01-14 | Toppan Printing Co., Ltd. | Laminate |
| JP2011083894A (en) * | 2009-10-13 | 2011-04-28 | Mitsubishi Plastics Inc | Surface-treated laminated polyamide based film and method for producing the same |
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