Car insulation component

摘要

Acoustic insulating component with acoustic mass-spring characteristics, comprising a dough layer and a disconnecting layer, characterized in that the dough layer consists of a porous fibrous layer with a dynamic Young modulus E of at least 96 · AW · t (Pa), where AW is the weight per unit area (g / m2) and where t is the thickness (mm) of the porous fibrous layer, and a thin air-impermeable barrier layer, in which the thin barrier layer is disposed between the fibrous layer and the disconnect layer and all layers are laminated together.