Polyethylene terephthalate film for magnetic recording medium co

Details Polyethylene terephthalate film for magnetic recording medium co Polyethylene terephthalate film for magnetic recording medium co

1992-02-21

1994-05-24

Thibodeau, Paul J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

428327, 428329, 428331, 428482, 428900, D07N 704

Patent

active

053147367

ABSTRACT:
Disclosed herein is a polyethylene terephthalate film for magnetic recording medium, which contains 0.1 to 1.0% by weight based on the film of aggregated silicon oxide particles having an average particle size of 0.03 to 0.2 .mu.m, primary particle of which having an average particle size of 0.005 to 0.05 .mu.m, 0.1 to 1.0% by weight based on the film of aggregated aluminium oxide particles having an average particle size of 0.03 to 0.2 .mu.m, primary particle of which having an average particle size of 0.005 to 0.05 .mu.m and 0.005 to 0.3% by weight based on the film of a crosslinked polymer having an average particle size of 0.2 to 0.8 .mu.m, said film having a center line average surface roughness of 0.003 to 0.015 .mu.m and a sum of F-5 values in both the machine direction and the transverse direction of at least 25.0 kg/mm.sup.2. The film has a flat surface and is excellent in slipperiness, abrasion resistance, scratch resistance and protuberance resistance, which can be used as a base film for high-density magnetic recording medium.

REFERENCES:
patent: 4568616 (1986-02-01), Seifried et al.
patent: 4639389 (1987-01-01), Nishimatsu et al.
patent: 4720412 (1988-01-01), Katoh et al.
patent: 4767657 (1988-08-01), Sakamoto et al.
patent: 4818581 (1989-04-01), Katoh et al.
patent: 4865898 (1989-09-01), Fukuda et al.
patent: 5085915 (1992-02-01), Taga et al.
patent: 5096773 (1992-03-01), Sakamoto

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