To provide a sound absorption board capable of improving sound absorption performance and improving damping performance of a body panel.SOLUTION: In a sound absorption board 10, a non-permeable outer layer 30 which is stuck to a roof panel 91 from a cabin side and is brought into close contact with the roof panel 91 and a permeable inner layer 20 configuring a surface facing the cabin side in the sound absorption board 10 are laminated. A foam sheet 21 of a continuous cell structure is included in the inner layer 20. The outer layer 30 is formed of a material harder than a material which configures the foam sheet 21, and has opposite recess parts 45 which form a space with the inner layer 20.SELECTED DRAWING: Figure 2

    【課題】吸音性の向上と車体パネルの制振性の向上が可能な吸音ボードを提供すること。【解決手段】吸音ボード10は、ルーフパネル91に車内側から貼り合わされ、ルーフパネル91に密着する非通気性の外側層30と、吸音ボード10のうち車内側を向く表面を構成する通気性の内側層20と、が積層されてなる。内側層20には、連続気泡構造の発泡シート21が含まれる。外側層30は、発泡シート21を構成する材料よりも硬い材料からなり、内側層20との間に空間を形成する対向凹部45を有している。【選択図】図2


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    Title :

    SOUND ABSORPTION BOARD


    Additional title:

    吸音ボード


    Contributors:

    Publication date :

    2020-06-04


    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 / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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