Flame laminable hydrophilic ester polyurethane foams
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United States of America Patent
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Mar 30, 2010
Grant Date -
Sep 4, 2008
app pub date -
Feb 26, 2008
filing date -
Jul 6, 2004
priority date (Note) -
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Abstract
A hydrophilic ester polyurethane foam is flame laminated to a substrate using a thin sacrificial layer, preferably a sacrificial foam layer. The sacrificial layer in the resulting laminate structure has a thickness of 1.5 mm or less, and preferably is substantially burnt away. The resulting laminate exhibits good bond strength along its length and width without loss of liquid wicking and absorptive properties.
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