JPS5473877A - Polyester film having improved running properties - Google Patents

Polyester film having improved running properties

Info

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
Application number
JP13987077A
Other languages
Japanese (ja)
Inventor
Shigeru Shiozaki
Takao Nakajo
Yukio Mitsuishi
Takeshi Yokoyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Teijin Ltd
Original Assignee
Teijin Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Teijin Ltd filed Critical Teijin Ltd
Priority to JP13987077A priority Critical patent/JPS5473877A/en
Priority to GB6410/78A priority patent/GB1591582A/en
Priority to DE2807147A priority patent/DE2807147C2/en
Publication of JPS5473877A publication Critical patent/JPS5473877A/en
Priority to US06/183,901 priority patent/US4348446A/en
Pending legal-status Critical Current

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
JP13987077A 1977-03-01 1977-11-24 Polyester film having improved running properties Pending JPS5473877A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4910241A (en) * 1972-05-25 1974-01-29
JPS50144772A (en) * 1974-05-13 1975-11-20

Patent Citations (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
JPS53115754A (en) Double-side coating method
JPS57150130A (en) Magnetic recording medium
JPS5473877A (en) Polyester film having improved running properties
JPS5278953A (en) Polyester films
JPS5415978A (en) Polyester film
JPS53145860A (en) Polyesoter film having improved transprtability
JPS53106783A (en) Polyester film with improved travelling property
JPS551651A (en) Magnetic recording medium
JPS5432545A (en) Adhesive tape
JPS57195321A (en) Metallic thin film magnetic recording medium
JPS52100536A (en) Adhesive tape
JPS5278954A (en) Polyester films
JPS54138796A (en) Twist-packing material
JPS5436382A (en) Polyester film
JPS5322540A (en) Adhesive tapes having tear properties in transverse direction
JPS5384036A (en) Formation of protecting film
JPS52150404A (en) Soap paper
JPS5538840A (en) Lubricating metal plate for press molding
JPS5633612A (en) Polarizing plate
JPS54152084A (en) Polyester laminated film
JPS55120685A (en) Light-scattering adhesive tape or sheet
JPS52996A (en) Resin composition
JPS53130038A (en) Image recorder
JPS54152085A (en) Coated polyester film
JPS5316067A (en) Polyamide films having improved drawing properties