An automotive vehicle soundproofing part having a body that includes a plurality of interlaced and/or bonded fibers. The body includes, in its thickness: a porous upper region of granular elements dispersed between the fibers; and a porous lower region with no dispersed granular elements, or formed of a concentration of dispersed granular elements lower than the concentration in dispersed granular elements of the porous upper region. The porous upper region has an air passage resistance at least 100 N·m−3·s greater than the air passage resistance of the porous lower region.


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    Title :

    AUTOMOTIVE VEHICLE SOUND PROOFING PART AND RELATED PROCESS


    Contributors:

    Publication date :

    2019-08-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse



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