Acoustical sound proofing material with improved damping at select frequencies and methods for manufacturing same
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United States of America Patent
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Sep 21, 2010
Grant Date -
Jan 1, 2009
app pub date -
Aug 31, 2007
filing date -
Jun 30, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
Panels for use in building construction (partitions, walls, ceilings, floors or doors) which exhibit improved acoustical sound proofing in multiple specific frequency ranges comprise laminated structures having as an integral part thereof one or more layers of viscoelastic material of varied shear moduli which also function as a glue and energy dissipating layer; and, in some embodiments, one or more constraining layers, such as gypsum, cement, 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 laminated structure.
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