Patent ID: 6576179
Filing Date: 2003-06-10
Classification: B29C

Abstract:
A process for injection-molding a composite resin composition using an injection-molding machine comprising:a kneader for kneading particles with a binder resin; a pair of reservoir devices (A) and (B) for temporarily storing the kneaded material supplied from the kneader; an injection device for injection-molding the kneaded material, the kneaded material temporarily stored in the reservoir devices (A) and (B) being alternately fed to the injection device; a reservoir switching means connected between the kneader and the pair of reservoir devices (A) and (B), which are switchable for alternately storing the kneaded material in the reservoir devices (A) and (B); and a feed switching means connected between the pair of reservoir devices (A) and (B) and the injection device, which are switchable for alternately feeding the kneaded material from the reservoir devices (A) and (B) to the injection device, which process comprises (a) kneading particles and a binder resin in the kneader; (b) feeding the obtained kneaded material to one (A) of the two reservoir devices through the reservoir switching means to store the material therein; (c) feeding the kneaded material stored in the reservoir device (A) to the injection device wherein the kneaded material is then injection-molded, through the feed switching means, and simultaneously feeding the kneaded material from the kneader to the other reservoir device (B) through the reservoir switching means to store the material therein; (d) feeding the kneaded material stored in the reservoir device (B) to the injection device wherein the kneaded material is then injection-molded, through the feed switching means, and simultaneously feeding the kneaded material from the kneader to the other reservoir device (A) through the reservoir switching means to store the material therein; and (e) repeating the steps (c) and (d).