JPS5766933A - Manufacture of low-oriented polyester film - Google Patents
Manufacture of low-oriented polyester filmInfo
- Publication number
- JPS5766933A JPS5766933A JP14222680A JP14222680A JPS5766933A JP S5766933 A JPS5766933 A JP S5766933A JP 14222680 A JP14222680 A JP 14222680A JP 14222680 A JP14222680 A JP 14222680A JP S5766933 A JPS5766933 A JP S5766933A
- Authority
- JP
- Japan
- Prior art keywords
- polyester
- low
- cutting
- polyester film
- melting point
- 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 improve easiness of cutting and heat-sealing property by melting polyester having specified limiting viscosity and melt viscosity and extruding it through the circular die maintained over the melting point of polyester and thereafter blowing it at blow ratio of more than 1.
CONSTITUTION: Thermoplastic polyester having more than 0.72 limiting viscosity and more than 6,000 poise melt viscosity at 265°C is melted. Molten polyester is extruded from the circular die of which die temperature is maintained over the melting point of thermoplastic polyester, thereafter low-oriented film of less than 50μ thickness is manufactured by being blowed at blow ratio of more than 1 and cooled, taken up. Obtained polyester film has 4W20kg/mm2 tensile strength at break, over 200% elongation, heat-sealing property under 160°C, torsional formability and easiness of cutting.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14222680A JPS5766933A (en) | 1980-10-11 | 1980-10-11 | Manufacture of low-oriented polyester film |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14222680A JPS5766933A (en) | 1980-10-11 | 1980-10-11 | Manufacture of low-oriented polyester film |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5766933A true JPS5766933A (en) | 1982-04-23 |
Family
ID=15310341
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14222680A Pending JPS5766933A (en) | 1980-10-11 | 1980-10-11 | Manufacture of low-oriented polyester film |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5766933A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58211422A (en) * | 1982-05-27 | 1983-12-08 | ザ・グツドイア−・タイヤ・アンド・ラバ−・コンパニ− | Manufacture of polyester film |
US4869864A (en) * | 1987-04-08 | 1989-09-26 | Polyplastics Co., Ltd. | Method of manufacturing polybutylene terephthalate resin films |
JPH02127022A (en) * | 1988-11-07 | 1990-05-15 | Mitsui Toatsu Chem Inc | Film for twist wrapping |
-
1980
- 1980-10-11 JP JP14222680A patent/JPS5766933A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58211422A (en) * | 1982-05-27 | 1983-12-08 | ザ・グツドイア−・タイヤ・アンド・ラバ−・コンパニ− | Manufacture of polyester film |
US4869864A (en) * | 1987-04-08 | 1989-09-26 | Polyplastics Co., Ltd. | Method of manufacturing polybutylene terephthalate resin films |
JPH02127022A (en) * | 1988-11-07 | 1990-05-15 | Mitsui Toatsu Chem Inc | Film for twist wrapping |
JPH0547384B2 (en) * | 1988-11-07 | 1993-07-16 | Mitsui Toatsu Chemicals |
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