JPS6448835A - Polyester film - Google Patents
Polyester filmInfo
- 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
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.
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03123716U (en) * | 1990-03-30 | 1991-12-16 |
-
1987
- 1987-08-19 JP JP20399987A patent/JPS6448835A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03123716U (en) * | 1990-03-30 | 1991-12-16 |
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