Composite film and utilization thereof
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Nov 29, 1983
Grant Date -
N/A
app pub date -
Sep 9, 1981
filing date -
Sep 16, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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