Composite film and utilization thereof

Details Composite film and utilization thereof Composite film and utilization thereof

1981-09-09

1983-11-29

Herbert, Jr., Thomas J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428323, 428327, 428328, 428331, 428336, 428409, 428516, 428910, 430155, B32B 702, B32B 516

Patent

active

044181124

ABSTRACT:
A composite film comprising a first layer comprising a polyolefin resin containing finely divided calcium carbonate dispersed therein and a surface layer comprising a polyolefin resin containing an acidic filler dispersed therein, which surface layer is bonded directly or indirectly to at least one surface of the first layer and has a thickness of at least 3 microns. A diazo copying paper is also disclosed which has a photosensitive diazo layer on the surface layer of the composite film.

REFERENCES:
patent: 3799828 (1974-03-01), Takashi et al.
patent: 4101050 (1978-07-01), Buckler et al.
patent: 4259412 (1981-03-01), Buzio et al.
patent: 4303708 (1981-12-01), Gebhardt et al.
patent: 4318950 (1982-03-01), Takashi et al.
patent: 4339504 (1982-07-01), Luebbe, Jr. et al.

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