PROBLEM TO BE SOLVED: To provide a composite sound absorption material and sound absorptive interior material that can easily adjust the air permeability and can improve the sound absorption performance by adjusting the air permeability.SOLUTION: A composite sound absorption material 1 includes a synthetic resin foam layer 3 on the surface of a fiber substrate 2. The synthetic resin foam layer 3 includes synthetic resin emulsion mixed with thermal expandable micro capsules. The thermal expandable micro capsules are expanded by heating the synthetic resin emulsion, the size of the clearance formed between the thermal expandable micro capsules can be changed in response to the expansion degree of the thermal expandable micro capsules, thereby adjusting the air permeability to a desired value.SELECTED DRAWING: Figure 1

    【課題】 通気度を容易に調節することができ、該通気度の調節によって吸音性能の向上を図ることができる複合吸音材料および吸音性内装材を提供する。【解決手段】 繊維基材2の表面に合成樹脂発泡層3を形成してなる複合吸音材料1であって、合成樹脂発泡層3には、熱膨張性マイクロカプセルが混合された合成樹脂エマルジョンを使用し、該合成樹脂エマルジョンを加熱して該熱膨張性マイクロカプセルを膨張させるとともに、該熱膨張性マイクロカプセルの膨張度合いに応じて該熱膨張性マイクロカプセル同士の間に形成される隙間の大きさを変えることにより、通気度が所望値となるように調節される。【選択図】 図1


    Access

    Download


    Export, share and cite



    Title :

    COMPOSITE SOUND ABSORPTION MATERIAL AND SOUND ABSORPTIVE INTERIOR MATERIAL


    Additional title:

    複合吸音材料および吸音性内装材


    Contributors:

    Publication date :

    2016-04-04


    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



    FITTING STRUCTURE OF SOUND ABSORPTION MATERIAL IN VEHICLE INTERIOR MATERIAL

    FUNAHASHI YOSHINORI / SUDO AKIRA | European Patent Office | 2019

    Free access

    Absorptive sound insulation

    SCHULZE VOLKMAR / TARELLO MAURIZIO | European Patent Office | 2024

    Free access

    SOUND ABSORPTION MATERIAL

    TAYLOR JAMES MARTIN / CRNOJA-COSIC MARINA / BURROW THOMAS RICHARD et al. | European Patent Office | 2015

    Free access

    SOUND ABSORPTION MATERIAL

    KAWAI TAKANORI / MABUCHI TOMOKI | European Patent Office | 2020

    Free access

    SOUND ABSORPTION MATERIAL

    SUZUKI YASUO / HIBINO TOMOSHIGE / ITO KUNIO et al. | European Patent Office | 2020

    Free access