Patent ID: 6146123
Filing Date: 2000-11-14
Classification: B29C

Abstract:
An apparatus for forming molded articles, which comprises:at least one injection mold having a mold cavity space and a mold gate communicating with said mold cavity space;an injection nozzle for feeding at least one stream of molten material to said at least one injection mold, said injection nozzle having at least one nozzle outlet therein substantially in line with said mold gate;movable valve gating means positioned between the mold gate and the at least one nozzle outlet and having at least one orifice therein;means for moving said valve gating means between a first position wherein said at least one orifice communicates with said at least one nozzle outlet and with said mold gate and permits the flow of molten material from said at least one outlet to said mold gate, and a second position blocking flow from said at least one nozzle outlet to said mold gate;said valve gating means being sufficiently thin that during movement of said valve gating means between said first and second positions substantially no material is carried by said valve gating means and no residual waste material is formed; andthe thickness of said valve gating means being from 0.01 to 2 mm.