Patent ID: 7513772
Filing Date: 2009-04-07
Classification: B29C

Abstract:
1. An injection molding apparatus comprising: a mold plate having a nozzle bore; a valve-gated nozzle positioned within the nozzle bore, the nozzle having a nozzle body defining a nozzle melt channel for receiving a melt stream of moldable material from a melt source, a nozzle tip assembly secured to a downstream end of the nozzle body having a nozzle tip melt channel in fluid communication with the nozzle melt channel, and a valve pin slidably disposed therein, wherein the melt stream of moldable material is conveyed through the nozzle and nozzle tip melt channels to a mold cavity via a mold gate that is selectively opened and closed by the valve pin, wherein the nozzle tip assembly includes,