Method of attenuating sound, and acoustical insulation therefor

Details Method of attenuating sound, and acoustical insulation therefor Method of attenuating sound, and acoustical insulation therefor

E - Fixed Constructions

04

B

E04B 1/84 (2006.01) B60R 13/08 (2006.01) D04H 1/00 (2006.01) D04H 1/54 (2006.01) D04H 1/56 (2006.01) D04H 13/00 (2006.01) B29C 43/22 (2006.01) B60R 11/00 (2006.01) B60R 11/02 (2006.01)

Patent

CA 2224985

Noise is attenuated through use of an acoustical insulation (10) that contains organic microfibers (12) and heat activatable staple fibers (14) where the heat activatable staple fibers (14) are bonded to each other and to the microfibers (12) at various contact points. The web has a thickness of about 0.5 centimeters or greater and a density of less than 250 kilograms per cubic meter and preferably contains bulking staple fiber (16). The acoustical insulation is positioned between a source area and a receiving area such that a major face of the insulation intercepts and thereby significantly attenuates sound waves passing from the source area to the receiving area.

Le bruit est atténué par une isolation acoustique (10) qui renferme des microfibres organiques (12) et des fibres discontinues pouvant être activées par la chaleur (14), ces dernières étant liées entre elles et aux microfibres (12) au niveau de divers points de contact. La bande a une épaisseur environ égale ou supérieure à 0,5 centimètres et une densité inférieure à 200 kilogrammes par mètre cube et contient de préférence des fibres discontinues gonflées (16). L'isolation acoustique est placée entre une surface source et une surface réceptrice de sorte qu'une face principale de l'isolation intercepte et, par conséquent, atténue considérablement les ondes sonores passant de la surface source à la surface réceptrice.

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