Fibers and nonwovens comprising polypropylene blends and mixtures
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United States of America Patent
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Aug 24, 2010
Grant Date -
Jun 4, 2009
app pub date -
Jan 7, 2009
filing date -
Jan 26, 2004
priority date (Note) -
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Abstract
Fibers and nonwoven materials comprising polymeric blends and polymeric mixtures that incorporate a blend of a first metallocene polypropylene and a second polypropylene are described. The first and second polypropylenes have a predetermined relationship for the melt temperature and the melt flow rate of the individual polypropylenes. Also described are fibers (including bicomponent fibers) and nonwoven materials made from the fibers where the fibers are extruded using the polymeric blends, and/or the polymeric mixtures.
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