Polypropylene blown film
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United States of America Patent
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Dec 13, 2011
Grant Date -
Jun 19, 2008
app pub date -
Dec 14, 2007
filing date -
Dec 15, 2006
priority date (Note) -
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Abstract
A blown film that comprises polypropylene that has a melt flow rate of 1.8 to 14.0 g/10 min. and a melting point of at least 115° C. The blown film has a haze of less than 10% and a gloss of greater than 70%. The blown film may be co-extruded with a medium density polyethylene or 15 wt % of an impact copolymer. A clarifier may also be incorporated. The blown film that comprises polypropylene is produced on a standard air cooled blown film line.
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