JPS6448835A - Polyester film - Google Patents

Polyester film

Info

Publication number
JPS6448835A
JPS6448835A JP20399987A JP20399987A JPS6448835A JP S6448835 A JPS6448835 A JP S6448835A JP 20399987 A JP20399987 A JP 20399987A JP 20399987 A JP20399987 A JP 20399987A JP S6448835 A JPS6448835 A JP S6448835A
Authority
JP
Japan
Prior art keywords
particles
inert
polyester film
cornual
hornlike
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
JP20399987A
Other languages
Japanese (ja)
Inventor
Tetsuo Ichihashi
Takatoshi Kuratsuji
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 JP20399987A priority Critical patent/JPS6448835A/en
Publication of JPS6448835A publication Critical patent/JPS6448835A/en
Pending 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)

Abstract

PURPOSE:To provide a polyester film small in a void content, excellent in slipperiness, chipping resistance, etc. and suitable for a magnetic tape or the like, by incorporating inert cornual particles having a plurality of hornlike projections on the powder surface in a polyester film. CONSTITUTION:Inert cornual particles having a plurality of hornlike projections on their surface (e.g., silica or titanium dioxide) are added to a polyester film (e.g., polyethylene terephthalate film). The ratio H/D (wherein H is the height of the projection and D is the diameter of an inert particle) is suitably 0.05-0.3, and the content of the inert particles is suitably 0.005-5wt.%. An example of a process for producing said cornual particles comprises forming silica particles having a specified particle diameter and a flat surface and comprising an aggregate of microparticles of about 1-10mmu by, for example, sodium silicate dealkalification process and growing microparticles on the surfaces.
JP20399987A 1987-08-19 1987-08-19 Polyester film Pending JPS6448835A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20399987A JPS6448835A (en) 1987-08-19 1987-08-19 Polyester film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20399987A JPS6448835A (en) 1987-08-19 1987-08-19 Polyester film

Publications (1)

Publication Number Publication Date
JPS6448835A true JPS6448835A (en) 1989-02-23

Family

ID=16483099

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20399987A Pending JPS6448835A (en) 1987-08-19 1987-08-19 Polyester film

Country Status (1)

Country Link
JP (1) JPS6448835A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03123716U (en) * 1990-03-30 1991-12-16

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03123716U (en) * 1990-03-30 1991-12-16

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