Polyester film with smooth and highly adhesive surface and metho

Details Polyester film with smooth and highly adhesive surface and metho Polyester film with smooth and highly adhesive surface and metho

1985-10-02

1988-03-22

Thibodeau, Paul J.

Stock material or miscellaneous articles

Composite

Of polyester

428141, 428143, 428694, 428900, 428910, G11B 570

Patent

active

047328142

ABSTRACT:
Disclosed is a biaxially stretched polyester film having a modified surface with an excellent bondability, in which both the surface smoothness and the slip characteristic, which are contradictory to each other, are satisfactory. This biaxially stretched polyester film has a multiplicity of ultra-fine protrusions which are an integral part of the film and dyeable with osmic acid. The film is prepared by subjecting an undrawn or drawn polyester sheet to a plasma treatment and then drawing the treated sheet at least once. The film is valuable as a base for a magnetic recording medium.

REFERENCES:
patent: 4072769 (1978-02-01), Lidel
patent: 4233352 (1980-11-01), Ohno et al.
patent: 4505966 (1985-03-01), Adachi et al.
patent: 4514451 (1985-04-01), Suzuki et al.
patent: 4568600 (1986-04-01), Ono et al.
patent: 4590119 (1986-05-01), Kawakami et al.
Chemical Abstracts, vol. 98, No. 14, 4 Apr. 1983, Abstract No. 108018z, Su, A 919330 (P. Valetski et al.), 23 Nov. 1982.

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