JPS5952648A - Gas barriering sheet - Google Patents
Gas barriering sheetInfo
- Publication number
- JPS5952648A JPS5952648A JP16375482A JP16375482A JPS5952648A JP S5952648 A JPS5952648 A JP S5952648A JP 16375482 A JP16375482 A JP 16375482A JP 16375482 A JP16375482 A JP 16375482A JP S5952648 A JPS5952648 A JP S5952648A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- film
- thickness
- adhesive
- gas barrier
- 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
Landscapes
- Wrappers (AREA)
- Laminated Bodies (AREA)
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】
本発明は、熱成形用に適したガスバリヤ−性シートに関
する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gas barrier sheet suitable for thermoforming.
従来、ガスバリヤ−性をもつ素材としては、例えば以下
の様なものがある。ポリ塩化ビニリデン（以下ＰＶＤＣ
と略称する）、エチレン−酢酸ビニル共重合体のけん化
物（以下ＥＶＡけん化物と略称する）、ポリエステル、
ポリアミド、ポリカーボネートなどである。これらの素
材は概に高価であり且つ単独ではヒートシール性、剛性
、防湿性等に一長一短があり単独で用いられることは少
なく、一般的には安価なポリオレフィン系のフィルムま
たはシートとラミネートシて用いられることが多い。し
かし、これらのガスバリヤ−性素材はポリオレフィンフ
ィルムまたはシートの熱成形温度領域から逸脱するもめ
もあり、実際に使用されているものはＰＶＤＣ・、ＥＶ
Ａけん化物が多い。前者は熱安定性に問題があり、後者
は高湿時のガスバリヤ−性に劣る欠点がある。Conventional materials with gas barrier properties include, for example, the following materials. Polyvinylidene chloride (PVDC)
), saponified ethylene-vinyl acetate copolymer (hereinafter referred to as saponified EVA), polyester,
These include polyamide and polycarbonate. These materials are generally expensive and have advantages and disadvantages in heat sealability, rigidity, moisture resistance, etc., and are rarely used alone; they are generally used as a laminate with an inexpensive polyolefin film or sheet. often. However, these gas barrier materials sometimes deviate from the thermoforming temperature range of polyolefin films or sheets, and those actually used are PVDC, EV, etc.
A: There are many saponified substances. The former has a problem with thermal stability, and the latter has a disadvantage of poor gas barrier properties at high humidity.
本発明者は、これらの熱成形用ガスバリヤ−性シートの
欠点を改良すべく鋭意検討を行った結果、ポリアクリロ
ニトリル系フィルム（以下ＰＡＮフィルム、と略称する
）の片面あるいは両面にポリオレフィン系フィルムまた
はシートを接着剤によりラミネートした物が熱成形時の
変色また高湿時のガスバリヤ−性にも優れていることを
発見した。As a result of intensive studies to improve the drawbacks of these gas barrier sheets for thermoforming, the inventors of the present invention found that a polyolefin film or sheet was added to one or both sides of a polyacrylonitrile film (hereinafter abbreviated as PAN film). It has been discovered that a product laminated with adhesive has excellent resistance to discoloration during thermoforming and gas barrier properties at high humidity.
ＰＡＮフィルムは極性基をもつが、ＥＶＡけん化物と比
較すればかなり透湿性は少ない。また、ＰＶＤＣの様に
熱成形時の熱によって変色することもな（、極めて安定
した性能を有するものである。このＰＡＮフィルムは一
般的な製法、例えばＴダイによる押出あるいはインフレ
ーションにて得ることができる。ＰＡＮフィルムはコロ
ナ放電処理するとさらに接着性を向上することができる
、
本発明に用いることのできるポリオレフィン系フィルム
またはシートとしては、ポリプロピレン、ボリエ升しン
あるい゛はこれらと他樹脂との共重合体などである。こ
れらのフィルムまたはシートはＩ’ＡＮフィルムの片ｍ
】または両面に配置し接着剤にて一体化するが、とくに
防湿性、安全性を考慮する場合は両面に配置する方が好
ましい。また、片面に配置した場合、成形用金型当接面
にＰＡＮフィルムを配置すると、ＰＡＮフィルムの溶融
時の粘度が高いために金型表面の凹凸を転写することが
極めて少なく、透明性に優れた成形品を得ることができ
る点で有利である。ポリオレフィン系のフィルムまたは
シートは一般的な゛ｒダイによる押出て作製することが
できる。この際、接着を良好にするためにコロナ放電処
理をすることが良い場合もある。Although PAN film has polar groups, it has considerably less moisture permeability compared to saponified EVA. In addition, unlike PVDC, it does not discolor due to heat during thermoforming (it has extremely stable performance).This PAN film can be obtained by general manufacturing methods, such as extrusion with a T-die or inflation. The adhesion of PAN film can be further improved by corona discharge treatment. Polyolefin films or sheets that can be used in the present invention include polypropylene, polyethylene, or combinations of these and other resins. copolymers, etc.These films or sheets are made of I'AN films.
]Alternatively, they can be placed on both sides and integrated with adhesive, but it is preferable to place them on both sides, especially when considering moisture resistance and safety. In addition, when placed on one side, if the PAN film is placed on the contact surface of the molding die, the viscosity of the PAN film when melted is high, so it is extremely unlikely that the unevenness of the mold surface will be transferred, resulting in excellent transparency. This is advantageous in that it is possible to obtain a molded product with high quality. A polyolefin film or sheet can be produced by extrusion using a general die. At this time, it may be advisable to perform corona discharge treatment to improve adhesion.
ＰＡＮフィルムとポリオレフィン系フィルムまたはシー
トとを接着一体化する際に用いることのできる接着剤は
、一般的なポリウレタン系の接着剤が使用できる。とく
に、耐熱性を要求される場合にはポリエステル変成のも
のも用いることができる。これらの接着剤は、溶剤（主
に酢酸エチル）に溶解し、グラビアロールまたハリバー
スロール等でＰＡＮフィルムに塗工、乾燥し、ポリオレ
フィン系フィルムまたはシートと一体化することができ
る。また、ホントメルトタイプの接着剤あるいは接着性
樹脂（アクリル酸、カルボン酸変性ポリオレフィン等ま
たは金属架橋樹脂）を用いてもよい。As the adhesive that can be used to bond and integrate the PAN film and the polyolefin film or sheet, a general polyurethane adhesive can be used. In particular, when heat resistance is required, polyester modified materials can also be used. These adhesives can be dissolved in a solvent (mainly ethyl acetate), applied to a PAN film using a gravure roll or a Harris roll, dried, and integrated with a polyolefin film or sheet. Further, a true melt type adhesive or adhesive resin (acrylic acid, carboxylic acid modified polyolefin, etc., or metal crosslinked resin) may be used.
本発明で得たシートは、常温流通のガスバリヤ−性食品
容器として使用することができる。The sheet obtained according to the present invention can be used as a gas barrier food container for distribution at room temperature.
本発明をさらに明らかにするために実施例にて説明する
。EXAMPLES In order to further clarify the present invention, Examples will be described.
実施例Ｉ
ＰＡＮフィルム（厚さ４０μｍ）のＷ面に無延伸ポリプ
ロピレンシート（厚さ０．４６１１ ）をポリウレタン
系接着剤（塗工ｆｆ１５１ｉ’／＋ｒ？）にてドライラ
ミネートを行い厚さ約０．５ｆｌｆｉのシートを得た。Example I A non-stretched polypropylene sheet (thickness: 0.4611 mm) was dry-laminated on the W side of a PAN film (thickness: 40 μm) using a polyurethane adhesive (coating: ff151i'/+r?) to a thickness of approximately 0.4 mm. A sheet of 5flfi was obtained.
このシートを４０φ×、深さ４１１ｍｍ、テーノぐ角度
５° の金型を用いて真空成形に供し、容器を得た。成
形の際はＰＡＮフィルムが金型面に当接する様に配置し
た。シートおよび成形品（ａ）の特性を第１表に示す。This sheet was subjected to vacuum forming using a mold with a diameter of 40 mm, a depth of 411 mm, and a pitch angle of 5 degrees to obtain a container. During molding, the PAN film was placed in contact with the mold surface. Table 1 shows the properties of the sheet and molded article (a).
また、無延伸ポリプロピレンシートが金型に当接する様
にして真空成形した成形品（ｂ）の特性もあわせて第１
表に示す。In addition, the characteristics of the molded product (b), which was vacuum formed with the unstretched polypropylene sheet in contact with the mold, were also evaluated in the first
Shown in the table.
実施例２
ＰＡＮフィルム（厚さ４０１ｔｍ ） ＋＋１一方の面
に無延伸ポリプロピレンフィルム（１γす４０μｍ）を
、他方の面に無延伸ポリプロピ１７ンシート（厚さ０．
４２ ｍｔｎ、 ）をそれぞれボリウレ９ン系接着剤（
塗ゴ［限５１？／靜）にてドライラミネートし、厚さ０
５朋のシートを得た。このシートおよび実施例１と同様
に成形を行った成形品の特性を第１表に示す。Example 2 PAN film (thickness: 401 tm) ++1 An unstretched polypropylene film (1γ 40 μm) was placed on one side, and an unstretched polypropylene sheet (thickness: 0.1 mm) was placed on the other side.
42 mtn, ) respectively with polyurethane 9-based adhesive (
Nurigo [Limited to 51? Dry laminated with /sil), thickness 0
I got a sheet for 5 friends. Table 1 shows the properties of this sheet and a molded product molded in the same manner as in Example 1.
実施例３
ＰＡＮフィルム（厚さ４０μｍ）にホットメルト接着剤
を用いて一方の面に無延伸ポリプロピレンフィルム（厚
さ４０μｍ）を、他方の面に無延伸ポリプロピレンシー
ト（厚さ０．４２ ｍｍ ）をラミネートしたシートお
よび実施例２と同様８こして得た成形品の特性を郷１表
に示す。Example 3 A non-stretched polypropylene film (thickness 40 μm) was attached to one side of a PAN film (thickness 40 μm) using a hot melt adhesive, and a non-stretched polypropylene sheet (thickness 0.42 mm) was attached to the other side. The properties of the laminated sheet and the molded product obtained by the same process as in Example 2 are shown in Table 1.
比較例Ｉ
ＰＡＮフィルムの代りにＰＶＤＣフィルム（厚さ２０μ
ｍ）を用いること以外は実施例２と全く同様のシートお
よび成形品の特性を第１表ζこ示す。Comparative Example I PVDC film (thickness 20μ
Table 1 shows the properties of the sheet and molded article which are exactly the same as in Example 2 except that m) is used.
比較例２
ＰＡＮフィルムの代りにＥＶＡけん化物フィルム（厚す
２５μｍ）を用いること以外は実施例２と全く同様のシ
ートおよび成形品の特性を第１表に示す。Comparative Example 2 Table 1 shows the properties of a sheet and molded article that were exactly the same as in Example 2, except that an EVA saponified film (25 μm thick) was used instead of the PAN film.
以秋１）
米１． ＡＳＴＭＤ−３９３５０８１に準拠。クーロ
メトリツクセンサー（Ｏｘ−Ｔｒａｎ １００． Ｍｏ
ｄｅｒｎ Ｃｏｎｔｒｏｌｓ Ｉｎｃ製）を使用。Autumn 1) Rice 1. Compliant with ASTM D-3935081. Coulometric sensor (Ox-Tran 100.Mo
(manufactured by dern Controls Inc).
来Ｚ ＪＩＳＫ−６７１４に準拠。積分球式光線透過
率測定袋＠（ＮＤＨ−２０Ｄ型へイズメータ、日本重色
■製）を使用。Compliant with JISK-6714. An integrating sphere type light transmittance measurement bag @ (NDH-20D type haze meter, manufactured by Nippon Heavy Shiki ■) was used.
第１表から明らかなように、本発明は、透明性容器の成
形に適しており加熱による変色がほとんどない。また、
ボイル、レトルト等の湿熱処理に対しても優れたガスバ
リヤ−性能を保持しており、その工業的価値は極めて大
なるものである。As is clear from Table 1, the present invention is suitable for molding transparent containers, and there is almost no discoloration due to heating. Also,
It maintains excellent gas barrier performance even in wet heat treatments such as boiling and retorting, and its industrial value is extremely great.
特許出願人 新神戸電機株式会社patent applicant Shin-Kobe Electric Co., Ltd.
Claims (1)
接着剤を用いてポリオレフィン系のフィルムあるいはシ
ートを一体化したガスバリヤ−性シート。A gas barrier sheet made by integrating a polyolefin film or sheet with an adhesive on one or both sides of a polyacrylonitrile film or sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16375482A JPS5952648A (en) | 1982-09-20 | 1982-09-20 | Gas barriering sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16375482A JPS5952648A (en) | 1982-09-20 | 1982-09-20 | Gas barriering sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5952648A true JPS5952648A (en) | 1984-03-27 |
Family
ID=15780059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16375482A Pending JPS5952648A (en) | 1982-09-20 | 1982-09-20 | Gas barriering sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5952648A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02229038A (en) * | 1989-03-01 | 1990-09-11 | Fujimori Kogyo Kk | Composite packaging material |
| JPH04366636A (en) * | 1991-06-14 | 1992-12-18 | Showa Denko Kk | Laminate |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50124970A (en) * | 1974-03-22 | 1975-10-01 |
-
1982
- 1982-09-20 JP JP16375482A patent/JPS5952648A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50124970A (en) * | 1974-03-22 | 1975-10-01 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02229038A (en) * | 1989-03-01 | 1990-09-11 | Fujimori Kogyo Kk | Composite packaging material |
| JPH04366636A (en) * | 1991-06-14 | 1992-12-18 | Showa Denko Kk | Laminate |
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