Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Composite article making
Patent
1995-06-06
1997-04-22
Kuhns, Allan R.
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
Composite article making
264 464, 264 50, 264255, 264DIG6, 156247, B29C 4406, B29C 4412
Patent
active
056226624
ABSTRACT:
The present invention relates to a sound attenuation composite and a method for making the composite. The sound attenuation composite includes a barrier layer and an open cell foam layer loaded with a sound blocking filler. In one embodiment, the foam layer is filled with a barium sulfate filler. In another embodiment, a solid polyvinyl chloride barrier layer is loaded with barium sulfate, wherein 60 parts of barium sulfate is present in each 100 parts of polyvinyl chloride.
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Satin Richard J.
Veiga Manuel J.
Bradford Industries, Inc.
Kuhns Allan R.
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