A lightweight sound absorbing surface material, having an excellent sound absorbing property and moldability, and a sound absorbing material using the sound absorbing surface material, are provided in the present invention. The sound absorbing surface material 6 is manufactured by laminating stretchable paper(s) which is (are) creped and/or embossed (such as a creped paper 1b) onto one or both sides of a fiber sheet 3. The degree of creping of the paper is in the range of between 10 and 50 %, and the height of projections of the embossed paper is in the range of between 0.02 and 2.00 mm, with the number of the projections being in the range of between 20 and 200 projections/cm 2 . Further, the sound absorbing surface material 6 is laminated onto a air permeable sheet of porous material 7, to manufacture a sound absorbing material 8.


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    Title :

    SOUND ABSORBING SKIN MATERIAL AND SOUND ABSORBING MATERIAL UTILIZING THE SAME


    Additional title:

    SCHALLABSORBIERENDES DECKMATERIAL UND DIESES VERWENDENDES SCHALLABSORBIERENDES MATERIAL
    MATÉRIAU DE REVÊTEMENT D'ABSORPTION DE SON ET MATÉRIAU D'ABSORPTION DE SON L'UTILISANT


    Contributors:

    Publication date :

    2020-12-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    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 / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / E04B Allgemeine Baukonstruktionen , GENERAL BUILDING CONSTRUCTIONS / G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES



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