HOLLOW FOAM MOLDING AND PRODUCTION METHOD THEREFOR

摘要

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 J eo of 0.5 .times. 10 -3 to 1.8 .times. 10 -3 Pa-1 and a swell ratio S w of 2.5 or less and a physical blowi ng 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/cm3.