Polyester films suitable for use in magnetic tapes

Details Polyester films suitable for use in magnetic tapes Polyester films suitable for use in magnetic tapes

1986-07-07

1988-08-30

Kittle, John E.

Stock material or miscellaneous articles

Structurally defined web or sheet

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

427127, 427128, 428148, 428149, 428156, 428323, 428327, 428328, 428329, 428331, 428339, 428409, 428480, 428483, 428694, 428695, 428900, 428910, B32B 2718

Patent

active

047676574

ABSTRACT:
There is disclosed a polyester film suitable for use in magnetic tapes having the characteristics represented by the following equations: ##EQU1## wherein N.sub.1 is the number of peaks of surface projections per millimeter;

REFERENCES:
patent: 3983285 (1976-09-01), Riboulet et al.
patent: 4233352 (1980-11-01), Ono et al.
patent: 4304807 (1981-12-01), Kawakami et al.
patent: 4348446 (1982-09-01), Mitsuishi et al.

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