Oriented films prepared using impact copolymer polypropylene
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United States of America Patent
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Feb 7, 2006
Grant Date -
Mar 31, 2005
app pub date -
Sep 29, 2003
filing date -
Sep 29, 2003
priority date (Note) -
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Abstract
Disclosed is a method of producing a novel biaxially oriented film having a high diffraction of light, and flexibility. In particular, the invention disclosed provides a method for making an opaque impact copolymer film by stretching in two dimensions an impact polypropylene copolymer. The invention is disclosed to be useful for making a material particularly suitable for a variety of applications including labeling media, food packaging and laminates. Also disclosed is a multilayer film having a first impact polypropylene copolymer layer and a second layer of another polymer wherein the multilayer film has significantly reduced haze. Also disclosed is film produced with a filler that has increased porosity and flexibility.
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