Patent ID: 7559760

Claim:
An injection molding apparatus comprising: a manifold having a heater and a manifold channel for distributing melt from a manifold inlet to a plurality of manifold outlets; a nozzle having a nozzle melt channel, the nozzle coupled to the manifold for receiving the melt from a manifold outlet, wherein the nozzle includes, a first nozzle body segment forming a portion of the nozzle melt channel, a second nozzle body segment forming a portion of the nozzle melt channel, and a thermal barrier segment coupled to and located between the first nozzle body segment and second nozzle body segment, the thermal barrier segment forming a portion of the nozzle melt channel and the thermal barrier being made from a material having a thermal conductivity which is lower than the thermal conductivity of the material of at least one of the first nozzle body segment and the second nozzle body segment; and a nozzle tip coupled to the downstream end of the second nozzle segment, the nozzle tip for receiving melt from the nozzle melt channel and delivering the melt to a mold cavity.