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United States of America Patent
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Issued Date -
Aug 22, 2013
app pub date -
Sep 7, 2011
filing date -
Sep 10, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention provides a film of an oriented material which exhibits the property of expansion in at least one of its machine and transverse directions at a first temperature and of shrinkage at a second, higher, shrink onset temperature, the film having been annealed after orientation at a temperature above the first temperature and selected with reference to an intended recycling wash-off process to promote expansion of the film at the selected temperature of the wash-off process.
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