Patent ID: 8668862
Filing Date: 2014-03-11
Classification: B29C,Y10T

Abstract:
1. A resin molding method of injecting molten resin into a cavity formed between opposed dies to form a resin molded article, the resin molding method comprising the steps of: increasing a temperature of at least a die surface facing the cavity to at least a glass transition temperature of resin; injecting the molten resin into the cavity in a state in which at least one flow gate for restricting a resin flow is protruded into the cavity to restrict the resin flow to a predetermined restricted area, the at least one flow gate being capable of protruding and retracting into/from the cavity; removing a restriction by retracting the flow gates from the cavity to a position not restricting the resin flow after start of injection in the injecting step; cooling and solidifying the resin in the cavity; and collecting the solidified resin from the dies to obtain a resin molded article, wherein a junction gate is provided at a junction of resin, the junction gate being capable of protruding and retracting into/from the cavity and setting a joint surface to join the resin flow.