RESIN MOLDING METHOD AND APPARATUS

摘要

To provide a resin molding method and apparatus that may realize a sprue runnerless system with a very simple structure and at a low cost, a molten resin 4 is fed from a resin supply portion 1 into a pair of cavities 3 through a resin passages 2 such as a sprue portion 2A and a pair of runner portion 2B for molding the resin. The method includes the following steps of: moving a resin return member 5 toward the resin supply portion 1 after supplying the molten resin 4 into the cavities 3, the resin return member 5 being disposed so as to be projectable into the resin passage 2 and movable through the resin passage 1; and returning a waste molded resin 6 under a molten/solid condition within the resin passage 2 back into the resin supply portion 1 under a molten condition by a heat of the resin supply portion 1.