The present invention provides a structure that improves sound absorption coefficient.The present invention provides a structure comprising: a foam resin layer formed of a foam material having a foaming ratio of 1.1 to 1.8 times; and a sound absorbing layer formed of a foam material having a foaming ratio of 10 to 30 times, the sound absorbing layer laminated on the foam resin layer.


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    Title :

    STRUCTURE FOR VEHICLES AND AIR CONDITIONING DUCT FOR VEHICLES


    Additional title:

    STRUKTUR FÜR FAHRZEUGE UND KLIMAANLAGENLEITUNG FÜR FAHRZEUGE
    STRUCTURE POUR VÉHICULES ET CONDUIT DE CLIMATISATION POUR VÉHICULES


    Contributors:

    Publication date :

    2022-02-23


    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 / B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht / G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES



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