JPS5515860A - Orientation polyester film - Google Patents

Orientation polyester film

Info

Publication number
JPS5515860A
JPS5515860A JP8937078A JP8937078A JPS5515860A JP S5515860 A JPS5515860 A JP S5515860A JP 8937078 A JP8937078 A JP 8937078A JP 8937078 A JP8937078 A JP 8937078A JP S5515860 A JPS5515860 A JP S5515860A
Authority
JP
Japan
Prior art keywords
inactive
substances
glycol
volume
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.)
Granted
Application number
JP8937078A
Other languages
Japanese (ja)
Other versions
JPS5734088B2 (en
Inventor
Shigeru Shiozaki
Atsushi Yamamoto
Takao Nakajo
Yukio Mitsuishi
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 JP8937078A priority Critical patent/JPS5515860A/en
Publication of JPS5515860A publication Critical patent/JPS5515860A/en
Publication of JPS5734088B2 publication Critical patent/JPS5734088B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To obtain an orientation polyester film which is good suited for a magnetic tape and electrical application by improving the wear-resisting performance with addition of 2 kinds of inactive substances of particular grain size.
CONSTITUTION: An orientation polyester composed of polyester (a condensed polymer of fragrant dicarbonic acid, such as terephthalic acid and isophthalic acid, etc., and glycol, such as ethylene glycol and diethylene glycol, etc.), [A] 0.03W1 wt% of inactive susbstances (such as, silica, kaoline, kaolinite, diatomaceous earth, calcium carbonate, carbon black and glass beads, etc.) having average grain diameter of 0.8μm or less and volume shape coefficient f [a value to make maximum diameter D(μm) of projected surfaces of all the inactive substances' grains and grain volume V(μm2) become f=v/D2] of 0.08 or less, and [B] 0.002W0.1 wt% of inactive substances (the same substances as [A] above) having an average grain diameter being larger than that of [A] and smaller than 1.8μm and volume shape coefficeint f of 0.08Wπ/6.
COPYRIGHT: (C)1980,JPO&Japio
JP8937078A 1978-07-24 1978-07-24 Orientation polyester film Granted JPS5515860A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8937078A JPS5515860A (en) 1978-07-24 1978-07-24 Orientation polyester film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8937078A JPS5515860A (en) 1978-07-24 1978-07-24 Orientation polyester film

Publications (2)

Publication Number Publication Date
JPS5515860A true JPS5515860A (en) 1980-02-04
JPS5734088B2 JPS5734088B2 (en) 1982-07-21

Family

ID=13968798

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8937078A Granted JPS5515860A (en) 1978-07-24 1978-07-24 Orientation polyester film

Country Status (1)

Country Link
JP (1) JPS5515860A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5968213A (en) * 1982-10-13 1984-04-18 Toray Ind Inc Biaxially stretched polyester film
JPS59179555A (en) * 1983-03-30 1984-10-12 Teijin Ltd Biaxially stretched polyester film
JPS6056531A (en) * 1983-09-09 1985-04-02 Toyobo Co Ltd Oriented polyester film
JPS6168727A (en) * 1984-09-12 1986-04-09 Teijin Ltd Biaxially stretched polyester film
JPS61177227A (en) * 1985-02-04 1986-08-08 Toyobo Co Ltd Orientated polyester film
JPS63175222A (en) * 1987-01-14 1988-07-19 Teijin Ltd Magnetic recording medium
US5006589A (en) * 1988-06-04 1991-04-09 Diafoil Company, Limited Polyester film for magnetic recording media
JPH05301977A (en) * 1991-09-17 1993-11-16 Toyobo Co Ltd Oriented polyester film

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4921100A (en) * 1972-06-16 1974-02-25
JPS5134272A (en) * 1974-07-15 1976-03-23 Celanese Corp
JPS5136779A (en) * 1974-09-13 1976-03-27 Hitachi Ltd DATSUSUISENTAKUKI
JPS5278953A (en) * 1975-12-26 1977-07-02 Teijin Ltd Polyester films
JPS5278954A (en) * 1975-12-26 1977-07-02 Teijin Ltd Polyester films
JPS5341355A (en) * 1976-09-29 1978-04-14 Toray Ind Inc Biaxilialy streched polyester film
JPS5371154A (en) * 1976-12-06 1978-06-24 Toray Ind Inc Biaxially oriented polyester film

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4921100A (en) * 1972-06-16 1974-02-25
JPS5134272A (en) * 1974-07-15 1976-03-23 Celanese Corp
JPS5136779A (en) * 1974-09-13 1976-03-27 Hitachi Ltd DATSUSUISENTAKUKI
JPS5278953A (en) * 1975-12-26 1977-07-02 Teijin Ltd Polyester films
JPS5278954A (en) * 1975-12-26 1977-07-02 Teijin Ltd Polyester films
JPS5341355A (en) * 1976-09-29 1978-04-14 Toray Ind Inc Biaxilialy streched polyester film
JPS5371154A (en) * 1976-12-06 1978-06-24 Toray Ind Inc Biaxially oriented polyester film

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5968213A (en) * 1982-10-13 1984-04-18 Toray Ind Inc Biaxially stretched polyester film
JPS59179555A (en) * 1983-03-30 1984-10-12 Teijin Ltd Biaxially stretched polyester film
JPH0141170B2 (en) * 1983-03-30 1989-09-04 Teijin Ltd
JPS6056531A (en) * 1983-09-09 1985-04-02 Toyobo Co Ltd Oriented polyester film
JPS6347738B2 (en) * 1983-09-09 1988-09-26 Toyo Boseki Kk
JPS6168727A (en) * 1984-09-12 1986-04-09 Teijin Ltd Biaxially stretched polyester film
JPS61177227A (en) * 1985-02-04 1986-08-08 Toyobo Co Ltd Orientated polyester film
JPH053377B2 (en) * 1985-02-04 1993-01-14 Toyo Boseki Kk
JPS63175222A (en) * 1987-01-14 1988-07-19 Teijin Ltd Magnetic recording medium
US5006589A (en) * 1988-06-04 1991-04-09 Diafoil Company, Limited Polyester film for magnetic recording media
JPH05301977A (en) * 1991-09-17 1993-11-16 Toyobo Co Ltd Oriented polyester film

Also Published As

Publication number Publication date
JPS5734088B2 (en) 1982-07-21

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