Provided is a thin, lightweight sound-absorbing material that has excellent low-frequency sound absorption. This sound-absorbing material has a laminate structure that includes a perforated layer and a porous layer. The sound-absorbing material has a plurality of pores that, when the thickness of the porous layer is D, go from the surface of the perforated layer that is on the opposite side from the porous layer to a depth of L (0

    L'invention concerne un matériau absorbant les sons, léger et fin, lequel est excellent en termes de capacité d'absorption des ondes basse fréquence. Ce matériau absorbant les sons présente une structure stratifiée comportant une couche perforée et une couche poreuse. Ce matériau absorbant les sons possède plusieurs pores qui, lorsque D représente l'épaisseur de la couche stratifiée, s'étendent de la surface de la couche perforée côté opposé à la couche poreuse, à une profondeur L (à condition que la relation: 0

    薄型軽量で低周波の吸音性に優れた吸音材を提供する。 本発明の吸音材は、穿孔層と多孔層を含む積層構造を有する吸音材であって、該多孔層の厚みをDとしたとき、該穿孔層の該多孔層と反対側の表面から、該多孔層の該穿孔層の側の表面から厚み方向に長さL(ただし、0<L≦D)の深さに至る、複数の孔部を有する。


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    Title :

    SOUND-ABSORBING MATERIAL


    Additional title:

    MATÉRIAU ABSORBANT LES SONS
    吸音材


    Contributors:
    HOSODA KOSUKE (author) / OKAHARA KAI (author)

    Publication date :

    2018-08-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES / 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 / B60C VEHICLE TYRES , Fahrzeugreifen



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