Soundproof sheet for vehicles, manufacturing method thereof, and dash silencer for vehicles using soundproof sheet
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United States of America Patent
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Apr 15, 2014
Grant Date -
Jun 20, 2013
app pub date -
Jul 24, 2012
filing date -
Oct 6, 2011
priority date (Note) -
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Abstract
A dash silencer is constructed by layering a front side layer formed from a porous material, an intermediate layer constructed by a film structure body and a rear side layer. The rear side layer has upper and lower side layer portions which are formed from porous and sound insulation materials respectively and layered on upper and lower side layer portions of the intermediate layer.
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