JPS57210825A - Manufacture of plastic film - Google Patents
Manufacture of plastic filmInfo
- Publication number
- JPS57210825A JPS57210825A JP9520981A JP9520981A JPS57210825A JP S57210825 A JPS57210825 A JP S57210825A JP 9520981 A JP9520981 A JP 9520981A JP 9520981 A JP9520981 A JP 9520981A JP S57210825 A JPS57210825 A JP S57210825A
- Authority
- JP
- Japan
- Prior art keywords
- film
- roll
- take
- dielectric heating
- elasticity
- 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
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
PURPOSE: To obtain a small coefficient of linear expansion and high modulus of elasticity, by heating a tubular plastic film molded by an inflation die system extrusion molding apparatus by a dielectric heating method and heating an amorphous part of a polymer selectively.
CONSTITUTION: A tubular plastics inflation film 1 is unrolled from a feeder 3, taken up by a take-up roll 5, being passed through a take-up roll 4, a dielectric heating apparatus 2, a cooling bath 6 and wound up by a winder 7. A speed of a take-up roll 5 being made faster than the speed of the take-up roll 4, tension is exerted on the film 1 and the film 1' is continuously heat stretched monoaxially inside of the dielectric heating apparatus 2 and the film 1' of a small coefficient of linear expansion and high modulus of elasticity is obtained.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9520981A JPS57210825A (en) | 1981-06-22 | 1981-06-22 | Manufacture of plastic film |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9520981A JPS57210825A (en) | 1981-06-22 | 1981-06-22 | Manufacture of plastic film |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57210825A true JPS57210825A (en) | 1982-12-24 |
Family
ID=14131353
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9520981A Pending JPS57210825A (en) | 1981-06-22 | 1981-06-22 | Manufacture of plastic film |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57210825A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01244831A (en) * | 1989-01-06 | 1989-09-29 | Nippon Cable Syst Inc | Manufacture of conduit for control cable |
-
1981
- 1981-06-22 JP JP9520981A patent/JPS57210825A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01244831A (en) * | 1989-01-06 | 1989-09-29 | Nippon Cable Syst Inc | Manufacture of conduit for control cable |
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