Heat-shrinkable polypropylene film with improved printability
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United States of America Patent
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Dec 8, 1992
Grant Date -
N/A
app pub date -
Apr 16, 1991
filing date -
Apr 27, 1990
priority date (Note) -
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Abstract
A heat-shrinkable polypropylene film adapted to be printed with, particularly, a flexographic ink is disclosed, which comprises a single layer heat-shrinkable film of a polypropylene resin composition containing spherical silicone resin fine particles of 0.2 to 5 microns in average particle size in a content of 0.1 to 0.7% by weight or a multi-layer heat-shrinkable film wherein at least one of the surface layers is such a polypropylene resin composition, with at least one surface of the single layer film or one surface of the surface layer of the multi-layer film having been subjected to corona discharge treatment to such degree that wettability index of the treated surface becomes 36 to 42 dyn/cm.
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