Patent ID: 8343413

Claim:
A method of manufacturing a molded foam from a foamed parison, the method comprising: an extruding step of extruding a resin blend containing a foaming agent and a thermoplastic resin to form a foamed parison; a mold clamping and attaching step of closely attaching substantially entire surfaces of facing portions of an inner wall surface of the foamed parison to each other by clamping the foamed parison by split mold blocks and pressing the foamed parison by a protuberance provided on at least one of the mold blocks to form a foamed parison laminated body and seal the split mold blocks; and a sucking step of sucking the foamed parison from air inlets provided in the split mold blocks to reduce a pressure between the split mold blocks without parting the foamed parison after the mold clamping and attaching step.