Patent ID: 6547547
Filing Date: 2003-04-15
Classification: B29C,Y10T

Abstract:
An apparatus for integrally molding a top side member, a back side member and a foam member, comprising:a pair of dies for opening and closing and comprising a cavity, a first die of said pair for receiving a back side member for being integrally molded to a foam member; a charger for supplying raw material beads made of resin to the cavity through a raw material charging port located in a side of said second die; a plurality of work piece nozzles each having a nozzle opening in fluid communication with the cavity, at least one of said work piece nozzles located at a position corresponding to an opening located in a back side member located in said second die, wherein each work piece nozzle is a member of one of a plurality of groups of nozzles, each nozzle is connected to a work piece fluid supply device, and said plurality of groups of nozzles comprises a plurality of groups of exhaust nozzles for exhausting air from the cavity, said exhausting air first through a group of exhaust nozzles at locations maximally distant from the raw material charging port, and then through groups of exhaust nozzles located successively closer to the raw material charging port for sequentially exhausting air from the cavity, through each group in turn, while said port is charging the cavity with raw material beads.