Jsp Corporation

Diasuke Imanari

Masato Naito

Kenichi Takase

Masayasu Okuda

A method for producing a hollow foam molding having a thin and uniform wall thickness, including extruding a foamable melt containing a polypropylene resin having an equilibrium compliance Jof 0.5&#xd7;10to 1.8&#xd7;10Paand a swell ratio Sof 2.5 or less and a physical blowing agent through a die to obtain a parison having a softened polypropylene resin foam layer, placing the parison in a mold, and blowing a gas into the parison to obtain a hollow foam molding having a hardened polypropylene resin foam layer with an apparent density of 0.35 to 0.65 g/cm.

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Tochigi-ken, Japan

Diasuke Imanari