Biaxially and monoaxially oriented polypropylene cold seal release film
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United States of America Patent
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Feb 6, 1996
Grant Date -
N/A
app pub date -
Apr 7, 1994
filing date -
Apr 7, 1994
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. In a preferred embodiment, the film comprises a laminate having at least one cold seal release layer and a cold seal receptive layer such that when the release layer is adjacent a cold seal cohesive on the cold seal receptive layer, the release layer and the cold seal receptive layer exhibit remarkably low adhesion. Typical cold seal materials include natural and synthetic rubber latex cohesives.
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