Acoustical sound proofing material and methods for manufacturing same
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United States of America Patent
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May 22, 2012
Grant Date -
May 3, 2007
app pub date -
Nov 30, 2006
filing date -
Sep 8, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An improved acoustical damping wall (ceiling or floor) or door material comprises a laminar structure having as an integral part thereof one or more layers of viscoelastic material which also functions as a glue and one or more constraining layers, such as metal, cellulose, wood, or petroleum-based products such as plastic, vinyl, plastic or rubber. In one embodiment, standard wallboard, typically gypsum, comprises the external surfaces of the laminar structure; and one or more constraining layers are fabricated between the gypsum exterior. The resulting structure improves the attenuation of sound transmitted through the structure.
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