Sealable white film made of polyolefins
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United States of America Patent
Stats
-
Jan 11, 1994
Grant Date -
N/A
app pub date -
Jun 5, 1992
filing date -
Jun 6, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A multilayered, white, biaxially-oriented polypropylene film is disclosed. The film has an at least three-layered build-up and has a base layer comprised of propylene polymers comprising up to 2% by weight of calcium carbonate having an average particle size of not more than 2.0 .mu.m and 0 to 25% be weight of titanium dioxide, an intermediate layer comprised of propylene polymers comprising 0 to 25% by weight of titanium dioxide, relative to the total weight of the intermediate layer; and a top layer comprised of a sealable raw material. The base layer and/or the intermediate layer of the film contain a total of at least 2% by weight of titanium dioxide.
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- Non-US Classification not provided for expired patents
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