JPS5473877A - Polyester film having improved running properties - Google Patents
Polyester film having improved running propertiesInfo
- Publication number
- JPS5473877A JPS5473877A JP13987077A JP13987077A JPS5473877A JP S5473877 A JPS5473877 A JP S5473877A JP 13987077 A JP13987077 A JP 13987077A JP 13987077 A JP13987077 A JP 13987077A JP S5473877 A JPS5473877 A JP S5473877A
- Authority
- JP
- Japan
- Prior art keywords
- films
- running properties
- projection
- height
- formula
- 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
- Compositions Of Macromolecular Compounds (AREA)
- Magnetic Record Carriers (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
PURPOSE: The surface of oriented polyester films is roughened with a material with projecting surfaces so as to adjust the distribution of the height and number of the projection in a specific range to improve the running properties at low tension and low speeds, wearing resistance and fatigue resistance.
CONSTITUTION: A polyester such as polyethylene terephthalate or polyethylene 2,6- naphthalate is incorporated with an inert substance such as caoline or insoluble catalyst residues formed during the polycondensation, thereby roughening the sur- face of resulting oriented films. At this time, the height of the projection on the roughened surface, h in micron, and the number per mm2 are controlled so as to satisfy formula I, preferably formula II and further the dynamic friction coef- ficient is preferably controlled in the range of formula III.
USE: Films for video tape recorder.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13987077A JPS5473877A (en) | 1977-11-24 | 1977-11-24 | Polyester film having improved running properties |
GB6410/78A GB1591582A (en) | 1977-03-01 | 1978-02-17 | Polyester film having slipperiness |
DE2807147A DE2807147C2 (en) | 1977-03-01 | 1978-02-20 | Biaxially oriented polyester film and process for its manufacture |
US06/183,901 US4348446A (en) | 1977-03-01 | 1980-09-04 | Polyester film having improved slipperiness |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13987077A JPS5473877A (en) | 1977-11-24 | 1977-11-24 | Polyester film having improved running properties |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5473877A true JPS5473877A (en) | 1979-06-13 |
Family
ID=15255467
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13987077A Pending JPS5473877A (en) | 1977-03-01 | 1977-11-24 | Polyester film having improved running properties |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5473877A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56166065A (en) * | 1980-03-12 | 1981-12-19 | Ici Ltd | Polyester composite film and its manufacture |
JPS5766936A (en) * | 1980-10-15 | 1982-04-23 | Teijin Ltd | Polyester film |
JPS57167216A (en) * | 1981-04-09 | 1982-10-15 | Teijin Ltd | Polyester film |
JPS57167215A (en) * | 1981-04-09 | 1982-10-15 | Teijin Ltd | Manufacture of polyester film |
JPS5855222A (en) * | 1981-09-28 | 1983-04-01 | Nippon Kagaku Seni Kenkyusho | Roughened polyester film |
JPS6015437A (en) * | 1983-07-08 | 1985-01-26 | Mitsubishi Chem Ind Ltd | Polyimide film for magnetic recording medium |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4910241A (en) * | 1972-05-25 | 1974-01-29 | ||
JPS50144772A (en) * | 1974-05-13 | 1975-11-20 |
-
1977
- 1977-11-24 JP JP13987077A patent/JPS5473877A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4910241A (en) * | 1972-05-25 | 1974-01-29 | ||
JPS50144772A (en) * | 1974-05-13 | 1975-11-20 |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56166065A (en) * | 1980-03-12 | 1981-12-19 | Ici Ltd | Polyester composite film and its manufacture |
JPS6122631B2 (en) * | 1980-03-12 | 1986-06-02 | Ici Plc | |
JPS5766936A (en) * | 1980-10-15 | 1982-04-23 | Teijin Ltd | Polyester film |
JPS6351090B2 (en) * | 1980-10-15 | 1988-10-12 | Teijin Ltd | |
JPS57167216A (en) * | 1981-04-09 | 1982-10-15 | Teijin Ltd | Polyester film |
JPS57167215A (en) * | 1981-04-09 | 1982-10-15 | Teijin Ltd | Manufacture of polyester film |
JPS6351091B2 (en) * | 1981-04-09 | 1988-10-12 | Teijin Ltd | |
JPS6364289B2 (en) * | 1981-04-09 | 1988-12-12 | ||
JPS5855222A (en) * | 1981-09-28 | 1983-04-01 | Nippon Kagaku Seni Kenkyusho | Roughened polyester film |
JPH021651B2 (en) * | 1981-09-28 | 1990-01-12 | Nippon Kagaku Seni Kenkyusho | |
JPS6015437A (en) * | 1983-07-08 | 1985-01-26 | Mitsubishi Chem Ind Ltd | Polyimide film for magnetic recording medium |
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