Method of making sound insulation with high loft
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United States of America Patent
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Aug 17, 2010
Grant Date -
Oct 19, 2006
app pub date -
Feb 28, 2006
filing date -
Apr 16, 2003
priority date (Note) -
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Abstract
Sound insulation core material is made by melt-blowing a polypropylene resin having a hydroxystearamide wax additive to produce a fibrous mass having improved loft. The core material is encased between outer layers of spun-bond polyethylene fibers by longitudinal seams and transverse seams to form a product suitable for use in dishwashers.
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