Inoac Corporation

Yasunari Kojima

Yosuke Hasegawa

In a soundproof memberincluding a polyurethane foamand disposed apart from an engine E on a vehicle interior side of a dash panelpartitioning a space into an engine room having the engine E as a sound source and a vehicle interior, the polyurethane foamhas a surface layeron at least a part of the surface thereof, a one side surface of the polyurethane foamdirectly facing the vehicle interior side of the dash panelhas at least a surface layerA in an open cell state or a core, and a surface layerB of the other side surface opposite to the one side surface is a surface layer in a closed cell state.

Growing community of inventors

Aichi, Japan

Yasunari Kojima