MOLD ASSEMBLY OF INJECTION-MOLDED PRODUCT AND MOLDING METHOD OF INJECTION-MOLDED PRODUCT

摘要

PROBLEM TO BE SOLVED: To well perform molding by preventing the lowering of the temperature of the molten resin in a product cavity to the utmost.;SOLUTION: This mold assembly of an injection-molded product is equipped with a fixed mold 11 and a movable mold 12 which are mutually opened and closed to form a product cavity 13 at the time of mold clamping and the gates 20 and 20A provided to the fixed mold 11 to communicate with a material passage 19. The surface for forming the product cavity 13 is formed by impregnating the surface of a porous mold material with ceramic layers 28 and 32. By this constitution, the lowering of the temperature of the resin J injected from the gates 20 and 20A is prevented by bringing the inside of the product cavity 13 to a heat insulating state by the low heat conductivity of the ceramic layers 28 and 32 to arrange the resin J of the same temperature to the peripheries thin-walled members 2 and 2 to perform molding.;COPYRIGHT: (C)2006,JPO&NCIPI