Aromatic polyamide film

Details Aromatic polyamide film Aromatic polyamide film

1997-10-08

2000-01-04

Resan, Stevan A.

Stock material or miscellaneous articles

Structurally defined web or sheet

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

428212, 4284735, 4284744, G11B 5704

Patent

active

060107650

ABSTRACT:
The present invention relates to a film made of an aromatic polyamide having excellent running property, durability and output characteristics when combined with a magnetic medium, and having excellent heat resistance, the number of large protrusions per 100 cm.sup.2 H2 on one surface of the film and the number of large protrusions per 100 cm.sup.2 H3 on the opposite surface of the film satisfy the relationships of:

REFERENCES:
patent: 3966686 (1976-06-01), Asakura et al.
patent: 4645702 (1987-02-01), Asakura et al.
patent: 4910068 (1990-03-01), Takagi et al.
patent: 5686166 (1997-11-01), Tsukuda et al.

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