Polyester film having improved slipperiness

Details Polyester film having improved slipperiness Polyester film having improved slipperiness

1980-09-04

1982-09-07

Silverman, Stanley S.

Stock material or miscellaneous articles

Structurally defined web or sheet

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

360134, 428149, 428150, 428328, 428329, 428330, 428331, 428409, 428483, 428694, 428900, G11B 570

Patent

active

043484468

ABSTRACT:
A biaxially oriented polyester film containing fine particles of insoluble inert substance, has a kinetic coefficient of friction of not more than 0.3, and has microscopic protrusions integrated thereto, said protrusion having an peak-to-valley height of not more than 1 micron mostly range of 0.2 to 0.5 micron. The film having improved slipperiness is useful as the base film of magnetic recording tape for a video tape recorder or a computer data storage.

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