MOLD AND ITS PRODUCTION FOR FOAMED RESIN AND MOLDING METHOD FOR FOAMED RESIN

PURPOSE:To prepare a mold for molding a foamed styrol at a very low price and a low manhour, by forming at lest a part of the wall face for forming a foaming chamber with a member being capable of peeling or degradably removing in a changeable state after a resin raw material is foamed. CONSTITUTION:An aluminum core 2 is inserted in a model 1 and a silicone rubber liquid 3 which is curable at room temperature is poured in the gap. The aluminum core 2 is pulled out and a silicone rubber mode 4 is taken out of an actual model 1 by bending a silicone rubber model 4 inside. An aluminum outer mold 6 is placed on a bottom plate 5 and a joined body of the silicone rubber model 4 and the aluminum core 2 is et in the center. Particles of a foaming styrol 7 are filled in the cavity formed. Then, an aluminum lid 8 is thereon placed and sealed. The whole body is kept in a pressurized steam, and the styrol particles are mutually fused to prepare a molding 9. The bottom plate 5, the outer mold 6 and the lid 8 are taken away, and the aluminum core 2 is pulled out. The silicone rubber model 4 is removed from the styrol molding 9 by utilizing the flexibility.