To provide an acoustic member for a vehicle which can insulate noise with space-saving.SOLUTION: In an acoustic member for a vehicle over which a decoupling layer and a mass layer are superimposed, the mass layer is configured so that high specific gravity material with specific gravity larger than a resin is adhered by the resin and weight ratio of a second region of one half of thickness of a side separated from the decoupling layer is 0.1 or more and below 1 with respect to weight of a first region of one half of thickness of a side facing to the decoupling layer.SELECTED DRAWING: Figure 1
【課題】 省スペースで遮音することができる車両用音響部材を提供する。【解決手段】 デカップリング層と質量層とが重ねられた車両用音響部材であって、質量層は、樹脂よりも比重が大きい高比重材が樹脂により接着されてなり、デカップリング層に面する側の厚さ二分の一の第1領域の重量に対して、デカップリング層から離れた側の厚さ二分の一の第2領域の重量比が0.1以上1未満であることを特徴とする。【選択図】図1
ACOUSTIC MEMBER FOR VEHICLE
車両用音響部材
2020-10-15
Patent
Electronic Resource
Japanese
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / 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 |
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