JPS55155033A - Production of composite film - Google Patents
Production of composite filmInfo
- Publication number
- JPS55155033A JPS55155033A JP6143079A JP6143079A JPS55155033A JP S55155033 A JPS55155033 A JP S55155033A JP 6143079 A JP6143079 A JP 6143079A JP 6143079 A JP6143079 A JP 6143079A JP S55155033 A JPS55155033 A JP S55155033A
- Authority
- JP
- Japan
- Prior art keywords
- film
- heat
- seal strength
- difference
- composite film
- 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
Abstract
PURPOSE: To obtain film which is suitable for gusset packaging and in which there is a difference in heat-seal strength between the surface and the back, by a method wherein both sides of a plastic film are laminated with a low-melting resin and one side of the resulting composite film is subjected to corona discharge treatment.
CONSTITUTION: Both sides of a plastic film (e.g. polypropylene film) are laminated with a low-melting resin (e.g. ethylene-propylene random copolymer contg. 1W 7wt% ethylene) by a conventional method. One side of the resulting composite film is subjected to corona discharge treatment at a wetting index of 33W55dyne/cm in order to lower the heat-seal strength of the treated side and to provide a difference in the heat-seal strength between said side and another side.
EFFECT: The desired difference in heat-seal strength can easily be provided by selecting a treating condition.
USE: Packaging film such as overlap packaging.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6143079A JPS55155033A (en) | 1979-05-21 | 1979-05-21 | Production of composite film |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6143079A JPS55155033A (en) | 1979-05-21 | 1979-05-21 | Production of composite film |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55155033A true JPS55155033A (en) | 1980-12-03 |
Family
ID=13170836
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6143079A Pending JPS55155033A (en) | 1979-05-21 | 1979-05-21 | Production of composite film |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55155033A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5924666A (en) * | 1982-07-31 | 1984-02-08 | グンゼ株式会社 | Film for laminating print |
JPH04131634U (en) * | 1991-05-21 | 1992-12-03 | 大日本印刷株式会社 | Antistatic packaging material |
US5626813A (en) * | 1992-02-24 | 1997-05-06 | Hoechst Aktiengesellschaft | Process for the production of a transparent polyolefin multilayer film |
-
1979
- 1979-05-21 JP JP6143079A patent/JPS55155033A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5924666A (en) * | 1982-07-31 | 1984-02-08 | グンゼ株式会社 | Film for laminating print |
JPH0153188B2 (en) * | 1982-07-31 | 1989-11-13 | Gunze Kk | |
JPH04131634U (en) * | 1991-05-21 | 1992-12-03 | 大日本印刷株式会社 | Antistatic packaging material |
US5626813A (en) * | 1992-02-24 | 1997-05-06 | Hoechst Aktiengesellschaft | Process for the production of a transparent polyolefin multilayer film |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS6490746A (en) | Composite air-permeable housing sheathing film | |
JPS56167423A (en) | Porous sheet | |
GB2124965B (en) | Mesh structure and laminate made therewith | |
JPS5699968A (en) | Separator for battery | |
JPS5254784A (en) | Composite film | |
GB1526724A (en) | Method of forming a laminate | |
JPS55155033A (en) | Production of composite film | |
CN109589208A (en) | A kind of preparation method of compound core body absorbing articles | |
JPS5681344A (en) | Production of gasoline tank made of polyolefin | |
JPS56113427A (en) | Film-forming method | |
JPS5651329A (en) | Manufacture of tempered polypropylene film | |
JPS6422551A (en) | Composite film for lid | |
JPS5429296A (en) | Packaging material | |
JPS54103486A (en) | Multi-layered sheet for forming container | |
JPS57103819A (en) | Manufacture of biaxially stretched polypropylene film of excellent rigidity and heat-shrinking resistance | |
JPS6422507A (en) | Water absorbing laminated sheet for concrete product | |
JPS5643335A (en) | Improvement in adhesion between carbon fiber and unsaturated matrix resin | |
JPS5676218A (en) | Water collecting/drainage material | |
JPS5613018A (en) | Oxygen absorbing body | |
JPS57107812A (en) | Method for packing | |
JPS56119772A (en) | Vacuum depositing method | |
JPS55151046A (en) | Resin composition | |
JPS6449620A (en) | Manufacture of holey film | |
JPS57111329A (en) | Production of polypropylene film having improved heat sealability | |
JPS6434734A (en) | Water absorbing laminated resin sheet |