Process for producing a heat-shrinkable polypropylene film
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United States of America Patent
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Mar 10, 1987
Grant Date -
N/A
app pub date -
Aug 7, 1985
filing date -
Aug 13, 1984
priority date (Note) -
Expired
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Abstract
A process for producing a heat-shrinkable polypropylene film, which comprises stretching a film of a polypropylene resin firstly in one direction, then heat-treating it, and further stretching it in a direction perpendicular to the direction of the first stretching.
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