Polypropylene-polybutylene laminated packaging film with improved tear strength
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United States of America Patent
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-
Dec 17, 1991
Grant Date -
N/A
app pub date -
May 31, 1990
filing date -
May 31, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A packaging film composition having an improved tear strength comprising a core, which is preferably polybutylene homopolymer or copolymer or a blend of polybutylene with another compatible polymer, said core being coated on one or both sides with a polypropylene homopolymer or copolymer optionally blended with a minor amount of a high melt index polybutylene.
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