Biaxially oriented polypropylene film with high heat seal strength
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United States of America Patent
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Sep 1, 2015
Grant Date -
Apr 2, 2009
app pub date -
Sep 29, 2008
filing date -
Sep 28, 2007
priority date (Note) -
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Abstract
A laminate film including a first polyolefin heat sealable resin layer and a second core layer including of a blend of 5-15 wt % of a metallocene-catalyzed butene-propylene or ethylene-propylene thermoplastic elastomer or ethylene-propylene plastomer or blends thereof which exhibit an isothermal crystallization temperature of 60° C. or less and 95-85 wt % of a crystalline propylene homopolymer is disclosed. The laminate film may include additional layers such as a third polyolefin resin-containing layer disposed on the side of the core layer opposite the heat sealable layer, a metal layer, or combinations thereof.
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