CORE MATERIAL FOR INTEGRAL FOAM MOLDING AND INTEGRAL FOAM MOLDING METHOD

摘要

PURPOSE: To prevent the leakage of a liquid foamable raw material from the periphery of the injection nozzle of a core material at the time of integral foam molding and to make voids or cell roughening hard to generate in foam. CONSTITUTION: The diameter of an injection port 11 is made smaller than the outer diameter of an injection nozzle 25 and a core material 10 having an annular elastic seal material 30 provided to the periphery of its injection port 11 on the surface side of the core material opposed to a core material attaching mold surface 21a is attached to the mold surface 21a of one split mold of a split type mold 20 to close the mold and the tip surface of the injection nozzle 25 is pressed to the surface of the elastic seal material 30 to inject a liquid foamable raw material into the mold.