Disclosed is a multi-layered sound absorbing material for a vehicle. More particularly, the multi-layered sound absorbing material for a vehicle comprises: a first sound absorbing layer; and a second sound absorbing layer formed on an upper surface of the first sound absorbing layer. The second sound absorbing layer comprises: 100 parts by weight of polyethylene terephthalate fibers; and 10-50 parts by weight of low melting point polyester fibers. The multi-layered sound absorbing material for a vehicle having the laminated structure has excellent sound absorption performance by applying the first sound absorbing layer and the second sound absorbing layer with increased internal voids.

    개시된 내용은 차량용 복층구조 흡음재에 관한 것으로, 더욱 상세하게는 제1흡음층 및 상기 제1흡음층의 상부면에 형성되는 제2흡음층으로 이루어지며, 상기 제2흡음층은 폴리에틸렌테레프탈레이트 섬유 100 중량부 및 저융점 폴리에스터 섬유 10 내지 50 중량부로 이루어진다. 상기의 적층구조로 이루어진 차량용 복층구조 흡음재는 내부 공극이 증가된 제1흡음층과 제2흡음층이 적용되어 우수한 흡음성능을 나타낸다.


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    Title :

    MULTI LAYER STRUCTURE SOUND-ABSORBING MATERIAL FOR VEHICLE


    Additional title:

    차량용 복층구조 흡음재


    Contributors:
    LEE MYUNG SIK (author) / HAN JU KWUN (author) / RYU JONG HYUN (author)

    Publication date :

    2019-03-22


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