JPS6410416A - Biaxially oriented polyester film for magnetic recording medium - Google Patents

Biaxially oriented polyester film for magnetic recording medium

Info

Publication number
JPS6410416A
JPS6410416A JP16549487A JP16549487A JPS6410416A JP S6410416 A JPS6410416 A JP S6410416A JP 16549487 A JP16549487 A JP 16549487A JP 16549487 A JP16549487 A JP 16549487A JP S6410416 A JPS6410416 A JP S6410416A
Authority
JP
Japan
Prior art keywords
grain size
particles
polyester
incorporated
magnetic recording
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
JP16549487A
Other languages
Japanese (ja)
Other versions
JPH0648535B2 (en
Inventor
Sumio Kato
Atsushi Yamamoto
Hisashi Hamano
Hideo Kato
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 JP16549487A priority Critical patent/JPH0648535B2/en
Publication of JPS6410416A publication Critical patent/JPS6410416A/en
Publication of JPH0648535B2 publication Critical patent/JPH0648535B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE:To improve magnetic conversion characteristics and to improve slipperiness, scratching resistance and chipping resistance by incorporating spherical silica particles having a specific grain size, grain size ratio, etc., and titanium oxide particles having a specific grain size and grain size distribution ratio into polyester. CONSTITUTION:The spherical silica particles dispersed and incorporated as a 1st component into the polyester have >=0.05mum and <=2mum average grain size and 1.0-1.2 grain size ratio (major diameter/minor diameter). The amt. of the particles to be added is 0.01-2wt.%. The anatase type titanium oxide particles to be dispersed and incorporated as the 2nd component therein have >=0.05mum and <=1mum average grain size and the grain size distribution ratio [gamma]expressed by the formula is in a 1.2-2.3 range. These particles are incorporated at 0.01-1wt.% into the polyester. Provision of the biaxially oriented polyester film for magnetic recording media having the excellent slipperiness, scratching resistance and chipping resistance is enabled even if the surface is flattened.
JP16549487A 1987-07-03 1987-07-03 Biaxially oriented polyester film for magnetic recording media Expired - Fee Related JPH0648535B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16549487A JPH0648535B2 (en) 1987-07-03 1987-07-03 Biaxially oriented polyester film for magnetic recording media

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16549487A JPH0648535B2 (en) 1987-07-03 1987-07-03 Biaxially oriented polyester film for magnetic recording media

Publications (2)

Publication Number Publication Date
JPS6410416A true JPS6410416A (en) 1989-01-13
JPH0648535B2 JPH0648535B2 (en) 1994-06-22

Family

ID=15813465

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16549487A Expired - Fee Related JPH0648535B2 (en) 1987-07-03 1987-07-03 Biaxially oriented polyester film for magnetic recording media

Country Status (1)

Country Link
JP (1) JPH0648535B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06313051A (en) * 1993-04-30 1994-11-08 Toray Ind Inc Biaxially oriented film
EP2386594A3 (en) * 2010-05-03 2013-02-27 Mitsubishi Polyester Film GmbH Biaxially oriented polyester film with spherical particles and titanium dioxide particles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06313051A (en) * 1993-04-30 1994-11-08 Toray Ind Inc Biaxially oriented film
EP2386594A3 (en) * 2010-05-03 2013-02-27 Mitsubishi Polyester Film GmbH Biaxially oriented polyester film with spherical particles and titanium dioxide particles

Also Published As

Publication number Publication date
JPH0648535B2 (en) 1994-06-22

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees