LVT flooring and underlayment including extruded sheet material with expanded microspheres
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United States of America Patent
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Aug 18, 2015
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N/A
app pub date -
Jun 2, 2015
filing date -
Aug 13, 2013
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Abstract
A hybrid underlayment, includes a thermoplastic making up between 92.0% by volume to 95.5% by volume of the hybrid underlayment. A plurality of expanded microspheres is dispersed through the thermoplastic. The microspheres are expanded to a volume in a range of between 180 square micrometers and 1450 square micrometers. The microspheres makeup between 1.0% by volume to 7.5% by volume of the hybrid underlayment. The hybrid underlayment is extruded into a flat sheet having a thickness of between 1.0 mm and 2.0 mm and a density from 7 pcf to 25 pcf.
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