Biaxially and monoaxially oriented polypropylene cold seal release film
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United States of America Patent
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Aug 25, 1998
Grant Date -
N/A
app pub date -
Feb 5, 1996
filing date -
Feb 5, 1996
priority date (Note) -
Expired
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Abstract
The invention presents a new use for modified polypropylene films, wherein the films are cold sealable for heat sensitive packaging operations. The films comprise in the following order: a cold seal cohesive layer, a core layer, and a cold seal release layer comprising a mixture of about 1 to 80% by weight butene-propylene copolymer and about 99 to 20% by weight butylene-ethylene copolymer.
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