JPS55123424A - Biaxially oriented plastic film and its preparation - Google Patents
Biaxially oriented plastic film and its preparationInfo
- Publication number
- JPS55123424A JPS55123424A JP2941679A JP2941679A JPS55123424A JP S55123424 A JPS55123424 A JP S55123424A JP 2941679 A JP2941679 A JP 2941679A JP 2941679 A JP2941679 A JP 2941679A JP S55123424 A JPS55123424 A JP S55123424A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- take
- biaxially oriented
- plastic film
- copolymer
- 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
- Laminated Bodies (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
PURPOSE: To obtain title film which is used for heat shrinkage capping of vessels, easy to open and excellent in hermetical sealing, comprising more than a specific amount of ionomer resin obtained by the action of metallic ions on a copolymer of ethylene and methacrylic acid.
CONSTITUTION: Resin component containing at least 80wt% of ionomer which is obtained by the action of metallic ions on a copolymer of ethylene and methacrylic acid is heated and kneaded by an extruder, is extruded from a cylindrical die in a tubular shape and then the resin tube is made to expand by the difference of its own inner and outer pressure and to pass the air ring and is cooled by flowing the air of 25°C on lower onto the surface of the tube from the air holes circularly arranged. The tube is expanded until the blow rate becomes 4 or more and at the same time it is elongated in the take-off direction until the take-off rate becomes 4 or more. Then, the tube in pressed in the clearance of a couple of take-off rolls, to give biaxially oriented plastic film with a thickness of 5W80μ, heat shrinkage factor of more than 30% after 2sec at 120°C in both directions, and tensile strength of higher than 2kg/mm2 in both directions.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2941679A JPS55123424A (en) | 1979-03-15 | 1979-03-15 | Biaxially oriented plastic film and its preparation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2941679A JPS55123424A (en) | 1979-03-15 | 1979-03-15 | Biaxially oriented plastic film and its preparation |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55123424A true JPS55123424A (en) | 1980-09-22 |
Family
ID=12275517
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2941679A Pending JPS55123424A (en) | 1979-03-15 | 1979-03-15 | Biaxially oriented plastic film and its preparation |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55123424A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104212049A (en) * | 2014-08-26 | 2014-12-17 | 大连欧思特科技有限公司 | Thermal shrinkable tube and preparation method thereof as well as application of thermal shrinkable tube in LED filament packaging |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52128955A (en) * | 1976-04-22 | 1977-10-28 | Ube Industries | Method and device for producing inflation film |
JPS547475A (en) * | 1977-06-21 | 1979-01-20 | Sumitomo Bakelite Co Ltd | Production of heat-shrinkable film |
-
1979
- 1979-03-15 JP JP2941679A patent/JPS55123424A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52128955A (en) * | 1976-04-22 | 1977-10-28 | Ube Industries | Method and device for producing inflation film |
JPS547475A (en) * | 1977-06-21 | 1979-01-20 | Sumitomo Bakelite Co Ltd | Production of heat-shrinkable film |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104212049A (en) * | 2014-08-26 | 2014-12-17 | 大连欧思特科技有限公司 | Thermal shrinkable tube and preparation method thereof as well as application of thermal shrinkable tube in LED filament packaging |
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