SOUND ABSORBING MATERIAL, AND VEHICLE MEMBER

    公开(公告)号:US20240217455A1

    公开(公告)日:2024-07-04

    申请号:US18555178

    申请日:2021-04-16

    CPC classification number: B60R13/08

    Abstract: Provided is a sound absorbing material, including: a protective layer; a first substrate layer having a communication hole; and a second substrate layer having a communication hole, in this order, in which a flexibility-toughness value of the protective layer, which is represented by Formula (I) described below, is 1 to 75 [MPa/μm].








    Flexibility
    -
    Toughness


    Value

    =


    (

    Tensile



    Modulus

    [
    MPa
    ]



    of


    Protective


    Layer


    at


    25

    °C
    ×
    Shore


    A


    Hardness


    of


    Protective


    Layer

    )

    /
    Protective


    Layer



    Thickness

    [
    μm
    ]






    (
    I
    )

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