Polymeric films
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United States of America Patent
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app pub date -
Apr 11, 2002
filing date -
Mar 18, 1997
priority date (Note) -
Abandoned
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Abstract
Biaxially oriented heat shrinkable polyolefin films having a layer of polypropylene-based resin with microvoids therein, the microvoids having been formed by stretching a web containing the beta-form of polypropylene, the film having a shrinkage after 10 minutes at 130.degree. C. of at least 10% in at least one direction.
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