Patent ID: 7803306
Filing Date: 2010-09-28
Classification: B29C

Abstract:
1. An injection molding apparatus comprising: a manifold having at least one manifold melt channel for receiving a melt stream of moldable material under pressure; a nozzle having a heater, a nozzle melt channel in fluid communication with said manifold melt channel, and a plurality of outwardly extending melt passages in fluid communication with said nozzle melt channel; a plurality of gate seals coupled to said nozzle, said plurality of gate seals for delivering the melt stream from said plurality of outwardly extending melt passages to a plurality of mold cavities through respective mold gates; a plurality of shut-off valves, each shut-off valve disposed within said nozzle and associated with an outwardly extending melt passage, each shut-off valve independently switchable between an open position and a closed position, where at least one of the shut-off valves comprises a plug.