Non-blocking opaque film

Details Non-blocking opaque film Non-blocking opaque film

1984-12-19

1985-12-24

Van Balen, William J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

428338, 428409, 428516, 428523, 428910, 524451, B32B 300, B32B 704, B32B 2718

Patent

active

045606145

ABSTRACT:
The invention involves preventing film-to-film blocking of a biaxially oriented polypropylene film which has been surface treated to enhance its wettability comprising including in said film prior to said treatment sufficient talc to prevent blocking. TiO.sub.2 can also be included in the surface film to impart paper-like characteristics thereto.

REFERENCES:
patent: 4058649 (1977-11-01), Steiner
patent: 4123417 (1978-10-01), Finberg
patent: 4333968 (1982-06-01), Nahmias
patent: 4377616 (1983-03-01), Ashcraft et al.

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