Acoustics – Sound-modifying means – Sound absorbing panels
Patent
1994-04-07
1995-10-17
Dang, Khanh
Acoustics
Sound-modifying means
Sound absorbing panels
181291, 181294, E04B 182
Patent
active
054592917
ABSTRACT:
A sound absorption laminate comprises a porous insulation substrate, such as, a thermoplastic glass or polymeric fiber blanket or a foamed polymeric resin sheet and a facing sheet with a high air flow resistance. The facing sheet is adhered to a surface of the porous insulation substrate to augment the acoustical properties of the substrate. With the facing sheet the air flow resistance of the laminate is greater than the air flow resistance of the substrate and the laminate exhibits a higher sound absorption coefficient than the sound absorption coefficient of the substrate. Thus, the laminate exhibits better sound absorption properties than the substrate and is suitable for sound absorption applications for which the substrate alone would not be suitable.
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Fay Ralph M.
Haines James C.
Dang Khanh
Quinn Cornelius P.
Schuller International, Inc.
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