Buffering and sound-absorbing member

Details Buffering and sound-absorbing member Buffering and sound-absorbing member

B - Operations, Transporting

60

R

B60R 13/08 (2006.01) B32B 3/12 (2006.01) B32B 5/18 (2006.01) G10K 11/162 (2006.01) G10K 11/172 (2006.01)

Patent

CA 2699479

The object of the present invention is to provide a shock and sound absorbing member having excellent shock and sound absorbing properties for use of a car etc. The shock and sound absorbing member comprises a core panel 2 onto which a plural number of tubular cells 22 are formed lengthwise and widthwise, a base panel 3 being attached to one side of the core panel 2, and a porous sheet 4 covering the other side of the core panel 2, the invading sound waves being damped in the tubular cells 22 of the core panel 2, and then absorbed by the porous sheet 4, the ventilation resistance of the porous sheet 4 being set to be in the range of between 0.5 and 5.0 kPa s/m.

L'invention concerne un élément d'amortissement et d'absorption de son qui présente une excellente propriété d'amortissement et d'absorption de son lorsqu'il est appliqué à un véhicule ou similaire. L'élément d'amortissement et d'absorption de son comprend un matériau central (2) obtenu par formation d'une pluralité de carrés cylindriques (22) dans le sens de la longueur et transversalement, un substrat (3) disposé sur une surface du matériau central (2), et un matériau poreux (4) amené à adhérer à l'autre surface du matériau central (2). L'élément d'amortissement et d'absorption de son atténue des ondes sonores entrées par les carrés (22) et absorbe les sons par le matériau poreux (4). Afin de présenter de manière appropriée des performances d'absorption de son, la résistance à la ventilation du matériau poreux (4) est réglée pour être de 0,5 à 5,0 kPa s/m.

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