PLASTIC ACOUSTIC MATERIAL AND METHODS OF MANUFACTURING THEREOF
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United States of America Patent
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Issued Date -
Oct 17, 2013
app pub date -
Apr 10, 2013
filing date -
Apr 16, 2012
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Abstract
A method of manufacturing plastic acoustic material including transforming plastic precursor material into plastic granules, filling a mold with the granules while forming air pockets between the granules in the mold, heating the mold, thereby at least partially melting the granules in the mold, and cooling the mold, thereby allowing the at least partially melted granules to solidify around the air pockets and thereby forming the plastic acoustic material.
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