| 摘要 |
PROBLEM TO BE SOLVED: To prevent the occurrence of a weldline in a resin foamed molded object. SOLUTION: In a manufacturing apparatus 10 of the resin foamed molded object for injecting a molten resin 30, to which a foaming agent is added, in the cavity 16 formed between a fixed mold 12 and a movable mold 14 to fill the cavity 16 and subsequently separating the movable mold 14 from the fixed mold 12 by a predetermined distance to foam the molten resin 30 in the cavity 16, two gates 18a and 18b becoming injection ports for injecting the molten resin 30 in the cavity 16. The molding surface 13 of the fixed mold 12 keeps the communication groove 26 cut for allowing two gates 18a and 18b to communicate with each other are formed. The communication groove 26 is formed so as to be bent in the molding surface 13 of the fixed mold 12. COPYRIGHT: (C)2008,JPO&INPIT |
