JPH0441652B2 - - Google Patents
Info
- Publication number
- JPH0441652B2 JPH0441652B2 JP59248398A JP24839884A JPH0441652B2 JP H0441652 B2 JPH0441652 B2 JP H0441652B2 JP 59248398 A JP59248398 A JP 59248398A JP 24839884 A JP24839884 A JP 24839884A JP H0441652 B2 JPH0441652 B2 JP H0441652B2
- Authority
- JP
- Japan
- Prior art keywords
- film
- solvent
- vinyl acetate
- acetate copolymer
- coating agent
- 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.)
- Expired - Lifetime
Links
Landscapes
- Bag Frames (AREA)
- Wrappers (AREA)
- Laminated Bodies (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は耐ガス透過性の優れた樹脂を含む積層
材料で、しかも引き裂きが容易な包装材料で、詳
細には耐ガス透過性の優れた樹脂層としてエチレ
ン−酢酸ビニル共重合体ケン化物フイルムを用い
た引き裂き容易な包装材料に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention is a laminated material containing a resin with excellent gas permeability resistance, and a packaging material that is easy to tear. The present invention relates to an easily tearable packaging material using a saponified ethylene-vinyl acetate copolymer film as a resin layer.
中間層に未延伸エチレン−酢酸ビニル共重合体
ケン化物フイルムを含む積層フイルムで、外層が
ポリエステルフイルムまたはナイロンフイルム、
内層がポリエチレンフイルムから成る場合は、外
層と中間層間の接着強度が200〜1000／15mm
（180°剥離）と大きいので、この積層フイルムの
引裂性は、充分実用に適したものであつた。
A laminated film containing an unstretched saponified ethylene-vinyl acetate copolymer film in the middle layer, and a polyester film or nylon film in the outer layer.
If the inner layer is made of polyethylene film, the adhesive strength between the outer layer and the middle layer is 200 to 1000/15 mm.
(180° peeling), the tearability of this laminated film was sufficiently suitable for practical use.
しかし、外層が延伸ポリプロピレンフイルムの
場合は、外層の破壊が生じるため、外層と中間層
の接着強度が20〜150g／15mm（180°剥離）と小さ
いので、引裂時に外層と中間層間が剥離したり、
中間層と内層の伸度や引裂性が異なるため、引裂
性が不充分であつた。 However, if the outer layer is a stretched polypropylene film, the outer layer will be destroyed, and since the adhesive strength between the outer layer and the intermediate layer is as low as 20 to 150 g/15 mm (180° peeling), the outer layer and the intermediate layer may separate when torn. ,
Since the elongation and tearability of the intermediate layer and the inner layer were different, the tearability was insufficient.
これに対処するため、本出願人は特願昭58−
91249号明細書において、延伸ポリプロピレンフ
イルムと未延伸エチレン−酢酸ビニル共重合体ケ
ン化物の間に、末端にイソシアネート基を有する
ポリエステル系またはポリエーテル系樹脂から成
る無溶剤型接着剤層を一層設けた包装材料を提案
した。しかし、無溶剤型接着剤層を一層設けただ
けではその硬さやもろさに限界があり、この包装
材料によつても充分引裂性を向上させたとは言い
難かつた。 In order to deal with this, the applicant filed a patent application filed in 1983-
In the specification of No. 91249, a solvent-free adhesive layer made of a polyester or polyether resin having an isocyanate group at the end is provided between the stretched polypropylene film and the saponified unstretched ethylene-vinyl acetate copolymer. Suggested packaging materials. However, the hardness and brittleness of a single layer of solvent-free adhesive are limited, and even this packaging material cannot be said to have sufficiently improved tearability.
本発明は、延伸ポリプロピレンフイルムとエチ
レン−酢酸ビニル共重合体ケン化物フイルムを含
む包装材料であつて、その引裂性を向上した包装
材料を提供することを目的とする。
An object of the present invention is to provide a packaging material containing a stretched polypropylene film and a saponified ethylene-vinyl acetate copolymer film, which has improved tearability.
すなわち、上述の目的を達成するため、本発明
は延伸ポリプロピレンフイルムから成る外層フイ
ルムの内側に、シヨアー硬度が90以上の溶剤タイ
プの樹脂コーテイング剤層，末端にイソシアネー
ト基を有するポリエステル系樹脂またはポリエー
テル系樹脂から成る無溶剤型接着剤層、未延伸エ
チレン−酢酸ビニル共重合体ケン化物フイルムを
順次積層して成る引き裂き容易な包装材料を提供
する。
That is, in order to achieve the above-mentioned object, the present invention includes a layer of a solvent-based resin coating agent having a Shore hardness of 90 or more, a polyester resin or polyether having an isocyanate group at the terminal, on the inside of an outer layer film made of a stretched polypropylene film. To provide an easy-to-tear packaging material, which is made by sequentially laminating a solvent-free adhesive layer made of a resin and a saponified unstretched ethylene-vinyl acetate copolymer film.
以下、図面を参照して本発明を説明する。図面
は本発明の実施例を示し、第１図はその断面図で
ある。 The present invention will be described below with reference to the drawings. The drawings show an embodiment of the invention, and FIG. 1 is a sectional view thereof.
すなわち、第１図において、１は延伸ポリプロ
ピレンフイルムを示し、このフイルム１に印刷画
像２を施した面に溶剤型のコーテイング剤３を塗
布する。コーテイング剤３はニトロセルロース、
ウレタン、塩素化ポリプロピレン、酢酸ビ樹脂、
アクリル、塩化ゴム等で良いが、硬く、もろい材
料で好ましく、シヨアー硬度が90以上のものを用
いる。中でも末端にイソシアネート基を有するポ
リエステル系又はポリエーテル系の溶剤タイプの
樹脂コーテイング剤が好ましく、塗布量は１〜
2μで良い。 That is, in FIG. 1, reference numeral 1 indicates a stretched polypropylene film, and a solvent-type coating agent 3 is applied to the surface of the film 1 on which a printed image 2 has been applied. Coating agent 3 is nitrocellulose,
Urethane, chlorinated polypropylene, vinyl acetate resin,
Acrylic, chlorinated rubber, etc. may be used, but hard and brittle materials are preferred, and those with a Shore hardness of 90 or higher are used. Among them, a polyester or polyether solvent type resin coating agent having an isocyanate group at the terminal is preferable, and the coating amount is 1 to 1.
2μ is fine.
また、この上に塗布される接着剤４は無溶剤型
の末端にイソシアネート基を有するポリエステル
系又はポリエーテル系の接着剤で、無溶剤型であ
ることを除けば、上述のコーテイング剤３と同系
統の樹脂であり、塗布量は0.5〜2g／ｍでよい。 The adhesive 4 applied thereon is a solvent-free polyester or polyether adhesive having an isocyanate group at the end, and is the same as the coating agent 3 described above, except that it is a solvent-free adhesive. It is a type of resin, and the coating amount may be 0.5 to 2 g/m.
この樹脂コーテイング剤３と接着剤４について
説明すると、溶剤型の樹脂は一般にその皮膜が硬
く、かつもろいという特性を有する。無溶剤型の
樹脂はこの点において溶剤型の樹脂に劣るが、溶
剤型の樹脂、特に非タツク性の樹脂を１〜2μmコ
ーテイングしても、エチレン−酢酸ビニル共重合
体ケン化物フイルム５に対して充分な接着力を持
たないのに対し、無溶剤型の樹脂は極めて強い接
着力で接着する。 Regarding the resin coating agent 3 and adhesive 4, solvent-type resins generally have a hard and brittle film. Solvent-free resins are inferior to solvent-based resins in this respect, but even with a coating of 1 to 2 μm of solvent-based resins, especially non-tack-based resins, they are less effective than saponified ethylene-vinyl acetate copolymer film 5. However, solvent-free resins have extremely strong adhesive strength.
具体的にはポリプロピレンフイルム１に印刷し
て、インキを乾燥し、この印刷面にコーテイング
剤３を塗布し、加熱して溶剤を除去し、更に接着
剤層４を塗布し、エチレン−酢酸ビニル共重合体
ケン化物フイルム５を貼り合わせ、コーテイング
剤３および接着剤４の硬化のためにエージングす
る。また接着剤４とコーテイング剤３はエチレン
−酢酸ビニル共重合体ケン化物フイルム５に塗布
してこの上にポリプロピレンフイルムを積層して
も良い。 Specifically, printing is performed on a polypropylene film 1, the ink is dried, a coating agent 3 is applied to the printed surface, the solvent is removed by heating, an adhesive layer 4 is applied, and an ethylene-vinyl acetate film is coated. The saponified polymer film 5 is laminated together and aged to cure the coating agent 3 and adhesive 4. Alternatively, the adhesive 4 and the coating agent 3 may be applied to a saponified ethylene-vinyl acetate copolymer film 5, and a polypropylene film may be laminated thereon.
なお、エチレン−酢酸ビニル共重合体ケン化物
フイルム５の上には更に別のフイルムが貼り合わ
せてあつても良く、第１図では末端にイソシアネ
ート基を有するポリエステル又はポリエーテル樹
脂から成るアンカーコート剤６を介してポリエチ
レンフイルム７及び静電防止ポリエチレンフイル
ム８が貼り合わせてある。これらのフイルム７，
８は、ポリプロピレンフイルム１とエチレン−酢
酸ビニル共重合体ケン化物フイルム５の貼り合わ
せの前にエチレン酢酸ビニル共重合体ケン化物フ
イルム５に貼り合わせても良いし、後で貼り合わ
せても良い。 Note that another film may be laminated on top of the saponified ethylene-vinyl acetate copolymer film 5, and in FIG. A polyethylene film 7 and an antistatic polyethylene film 8 are bonded together via a film 6. These films 7,
8 may be attached to the saponified ethylene-vinyl acetate copolymer film 5 before the polypropylene film 1 and the saponified ethylene-vinyl acetate copolymer film 5 are attached, or may be attached afterward.
以下実施例により本発明を説明する。 The present invention will be explained below with reference to Examples.
片面に東洋モートン(株)製BHS123（末端にイソ
シアネート基を有するポリエステル系又はポリエ
ーテル系樹脂）から成るアンカーコート剤を介し
てポリエチレンフイルム及び静電防止ポリエチレ
ンフイルムをエチレン−酢酸ビニル共重合体ケン
化物フイルムに積層した。
Saponified ethylene-vinyl acetate copolymer is applied to polyethylene film and antistatic polyethylene film via an anchor coating agent made of BHS123 (polyester or polyether resin having an isocyanate group at the end) manufactured by Toyo Morton Co., Ltd. on one side. Laminated on film.
一方、延伸ポリプロピレンフイルムに印刷を施
し、この印刷面に武田薬品(株)製Ａ−2071（溶剤タ
イプ−液型の末端にイソシアネート基を有するポ
リエステル系またはポリエーテル系樹脂コーテイ
ング剤）を1μm塗布し、加熱して溶剤を除去した
後、武田薬品(株)製Ａ−270（無溶剤タイプの末端に
イソシアネート基を有するポリエステル系又はポ
リエーテル系樹脂接着剤）を塗布し、この上に前
記エチレン−酢酸ビニル共重合体ケン化物フイル
ムを積層した。 On the other hand, a stretched polypropylene film was printed, and the printed surface was coated with 1 μm of A-2071 (solvent type, liquid type, polyester or polyether resin coating agent having isocyanate groups at the terminals). After removing the solvent by heating, A-270 manufactured by Takeda Pharmaceutical Co., Ltd. (a solvent-free polyester or polyether resin adhesive having an isocyanate group at the end) is applied, and the ethylene- Saponified vinyl acetate copolymer films were laminated.
こうして得られた包装材料を用いて袋を作成
し、カツオブシを入れて密封シールした。なお、
袋はポリプロピレンフイルムを外側とした。この
袋のシール部分に切り込みを入れてＩノツチと
し、このＩノツチから手で引き裂いたところ、ポ
リプロピレンフイルムとエチレン酢酸ビニル共重
合体ケン化物フイルムが剥離することなく良好に
開封できた。 A bag was made using the packaging material thus obtained, and the katsuobushi was put therein and hermetically sealed. In addition,
The outside of the bag was made of polypropylene film. A notch was made in the seal of this bag to form an I-notch, and when the bag was torn by hand from the I-notch, the bag could be opened successfully without peeling of the polypropylene film and saponified ethylene-vinyl acetate copolymer film.
なお、コーテイング剤のシヨアー硬度は92であ
つた。 The coating agent had a Shore hardness of 92.
〔実施例 ２〕
コーテイング剤として武田薬品(株)製Ｄ−204EA
（末端にイソシアネート基を有する溶剤型の一液
型ポリエステル系またはポリエーテル系樹脂）を
用いた外は実施例１と同様に包装材料及び袋を作
成し、引き裂き開封したところ、ポリプロピレン
フイルムとエチレン−酢酸ビニル共重合体フイル
ムが剥離することなく良好に開封できた。[Example 2] D-204EA manufactured by Takeda Pharmaceutical Co., Ltd. as a coating agent
(Solvent-type one-component polyester or polyether resin having an isocyanate group at the end) A packaging material and a bag were prepared in the same manner as in Example 1, and when the bag was torn and opened, a polypropylene film and an ethylene- The vinyl acetate copolymer film could be opened successfully without peeling.
なお、コーテイング剤は極めて硬く、しかもも
ろく、そのシヨアー硬度は測定不能で、測定前に
破壊されてしまつた。 The coating agent was extremely hard and brittle, and its Shore hardness could not be measured, and it was destroyed before measurement.
図面は本発明の実施例を示し、第１図は包装材
料の断面図である。
１……ポリプロピレンフイルム、２……印刷画
像、３……コーテイング剤、４……接着剤、５…
…エチレン−酢酸ビニル共重合体ケン化物フイル
ム、６……アンカーコート剤、７……ポリエチレ
ンフイルム、８……静電防止ポリエチレンフイル
ム。
The drawings show an embodiment of the invention, and FIG. 1 is a cross-sectional view of the packaging material. 1...Polypropylene film, 2...Printed image, 3...Coating agent, 4...Adhesive, 5...
... Saponified ethylene-vinyl acetate copolymer film, 6 ... Anchor coating agent, 7 ... Polyethylene film, 8 ... Antistatic polyethylene film.
Claims (1)
イルムの内側に、シヨアー硬度が90以上の溶剤タ
イプの樹脂コーテイング剤層、末端にイソシアネ
ート基を有するポリエステル系樹脂またはポリエ
ーテル系樹脂から成る無溶剤型接着剤層、未延伸
エチレン−酢酸ビニル共重合体ケン化物フイルム
を順次積層して成る引き裂き容易な包装材料。1. On the inside of the outer layer film made of stretched polypropylene film, a solvent-based resin coating layer with a Shore hardness of 90 or more, a solvent-free adhesive layer made of polyester resin or polyether resin having an isocyanate group at the end, and An easy-to-tear packaging material made of sequentially laminated saponified ethylene-vinyl acetate copolymer films.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59248398A JPS61125844A (en) | 1984-11-24 | 1984-11-24 | Tearable packaging material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59248398A JPS61125844A (en) | 1984-11-24 | 1984-11-24 | Tearable packaging material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61125844A JPS61125844A (en) | 1986-06-13 |
| JPH0441652B2 true JPH0441652B2 (en) | 1992-07-09 |
Family
ID=17177510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59248398A Granted JPS61125844A (en) | 1984-11-24 | 1984-11-24 | Tearable packaging material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61125844A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1488922B1 (en) * | 2002-03-26 | 2016-10-26 | Kurita Water Industries Ltd. | Flexible container, method of forming a flexible container and method of enclosing a liquid in a flexible container |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5724217A (en) * | 1980-07-21 | 1982-02-08 | Toppan Printing Co Ltd | Manufacture of laminated film |
| JPS57189846U (en) * | 1981-05-29 | 1982-12-02 |
-
1984
- 1984-11-24 JP JP59248398A patent/JPS61125844A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61125844A (en) | 1986-06-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |