Sanwa Kako Company Limited

Koji Yoshimura

Shusaku Maruo

A vibration damping, resinous, open cell cellular body is disclosed. The body has a base material thereof which consists essentially of a mixture of a tri-block copolymer as a combination of polystyrene and vinyl-polyisoprene and an ethylene series resin. In a method of manufacture, the mixture is blended and kneaded with a foaming agent and a crosslinking agent to form a foamable and crosslinkable composition. The composition is heated in a non-airtight mold to foam, thereby forming a cellular body with cells therein. The cellular body is then mechanically deformed to cause cells therein to be interconnected, thereby producing the open cell cellular body.

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Hyogo, Japan

Koji Yoshimura