Westerman, Hattori, Daniels & Adrian, LLP
Urethane foam molded product and method for producing the same
The present invention provides a urethane foam molded product that has high thermal conductivity with minimal change to its physical properties. A simple method for producing the same is also provided. The urethane foam molded product includes a base material formed of a polyurethane foam, and a thermal conductive filler mixed in the base material and oriented to form mutual connections. The thermal conductive filler is formed of composite particles that include thermal conductive particles formed of a nonmagnetic material, and magnetic particles adhered to the surfaces of the thermal conductive particles. The method for producing the urethane foam molded product includes a raw material mixing process that mixes a foam urethane resin material and the thermal conductive filler to obtain a mixed raw material, and a foam molding process that injects the mixed raw material into a cavity of a foaming die and performs foam molding while a magnetic field is applied so as to substantially uniform a magnetic flux density inside the cavity.
SUMITOMO RIKO COMPANY LIMITED TOKAI CHEMICAL INDUSTRIAS, LTD.
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Naoki Katsutoshi Shinji Koji Yasuo
Katayama Hashimoto Yoshida Tomiyama Suzuki