Soundproofing assembly for an automobile, and associated wall element
AssigneeFaurecia Automotive Industrie
InventorsArnaud Duval, Lars Bischoff, Jean-Francois Rondeau
Life of this patent
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Abstract
The assembly comprises a base spring layer made with a base of a resilient porous material, and the base spring layer being intended to be placed opposite a surface of the automobile. It comprises a stiffening layer arranged above the base spring layer and having a surface density greater than 250 g/m2 and at least one resilient porous upper layer arranged on the stiffening layer. The stiffening layer is made with a base of a dense porous material having a resistance to air flow strictly greater than 2000 N·m−3·s. The assembly advantageously has an upper resistive layer.
Claims17
A soundproofing assembly for an automobile, of the type comprising:
- a base spring layer made of a porous, resilient material, the base spring layer being configured to be placed opposite a surface of an automobile;
- a stiffening layer arranged above the base spring layer with a surface density of more than 250 g/m2;
- at least one porous, resilient upper layer arranged on the stiffening layer;
- wherein the stiffening layer is made with a base of a dense porous material having a resistance to air flow is strictly higher than 2500 N·m˜3·s and lower than 6000 N·m−3·s.
Dependencies are inferred from the claim text.