JPS5462275A - Production of polyester film - Google Patents
Production of polyester filmInfo
- Publication number
- JPS5462275A JPS5462275A JP12908877A JP12908877A JPS5462275A JP S5462275 A JPS5462275 A JP S5462275A JP 12908877 A JP12908877 A JP 12908877A JP 12908877 A JP12908877 A JP 12908877A JP S5462275 A JPS5462275 A JP S5462275A
- Authority
- JP
- Japan
- Prior art keywords
- films
- longitudinal direction
- production
- simultaneous biaxial
- polyester 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
Landscapes
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
PURPOSE: After simultaneous biaxial orientation, monoaxial orientation at a specific draw ratio is effected in the longitudinal direction to produce polyester films with increased tensile strength in one direction and simultaneously improved slipping properties.
CONSTITUTION: Unoriented polyethylene terephthalate films are subjected to simultaneous biaxial orientation at 80-90°C at a stretch ratio of 3-3.5 in both directions. Then the resulting films are oriented monoaxially at 100-220°C at a stretch ratio of 2-3.5 in the longitudinal direction to form the objective films.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12908877A JPS5462275A (en) | 1977-10-26 | 1977-10-26 | Production of polyester film |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12908877A JPS5462275A (en) | 1977-10-26 | 1977-10-26 | Production of polyester film |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5462275A true JPS5462275A (en) | 1979-05-19 |
Family
ID=15000771
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12908877A Pending JPS5462275A (en) | 1977-10-26 | 1977-10-26 | Production of polyester film |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5462275A (en) |
-
1977
- 1977-10-26 JP JP12908877A patent/JPS5462275A/en active Pending
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