The present invention relates to a sound absorption material for a vehicle, consisting of: a first sound absorption layer including polyurethane (PU) foam; and a second sound absorption layer including porous expanded polypropylene (PEPP) foam consisting of open cells, and stacked on the first sound absorption layer. Accordingly, sound absorption performance can be increased and a separation phenomenon between the first sound absorption layer and the second sound absorption layer can be reduced.

    본 발명은 차량용 흡음재에 관한 것으로, 폴리우레탄(PU)폼을 포함하는 제 1 흡음층, 및 오픈셀(Open cell)로 구성된 다공성 발포 폴리프로필렌(PEPP)폼을 포함하고 제 1 흡음층에 적층되어 구비되는 제 2 흡음층을 포함하여 구성됨으로써, 흡음 성능을 향상시키고 제 1 흡음층과 제 2 흡음층 간의 박리 현상을 저감시킨다.


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    Title :

    NOISE ABSORBING MATERIAL FOR VEHICLE


    Additional title:

    차량용 흡음재


    Contributors:

    Publication date :

    2018-02-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    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 / B62D MOTOR VEHICLES , Motorfahrzeuge



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