Patent ID: 7207796
Filing Date: 2007-04-24
Classification: B29C

Abstract:
1. Coinjection molding nozzle, comprising: a nozzle body having a longitudinal axis, a proximal end, and a distal end; a first nozzle body melt channel disposed in said nozzle body, said first nozzle body melt channel having a proximal end and a distal end, and being configured to carry a first melt; a second nozzle body melt channel disposed in said nozzle body substantially parallel to said first nozzle body melt channel, said second nozzle body melt channel having a proximal end and a distal end, and being configured to carry a second melt; a thermally conductive nozzle tip disposed at a distal end of said nozzle body; a first nozzle tip melt channel disposed in said nozzle tip and configured to carry the first melt from said first nozzle body melt channel, said first nozzle tip melt channel having a proximal end and a distal end; a second nozzle tip melt channel disposed in said nozzle tip and configured to carry the second melt from said second nozzle body melt channel, said second nozzle tip melt channel having a proximal end and a distal end, the distal end of said second nozzle tip melt channel merging into the distal end of said first nozzle tip melt channel; and first and second thermal insulation grooves disposed in said nozzle body parallel to and on opposite sides of said second nozzle melt channel, and configured to thermally separate said second nozzle melt channel from said first nozzle melt channel.