HOT RUNNER COINJECTION NOZZLE WITH THERMALLY SEPARATED MELT CHANNELS

摘要

Coinjection molding nozzle apparatus (16) and method includesstructure and/or steps whereby a first nozzle melt channel(202) is kept thermally separated from a second nozzle meltchannel (203). Preferably, grooves (213, 214) in the nozzlebody (200) or a separate nozzle pipe (103) keep the first (202)and second (203) nozzle melt channels thermally separated.Preferably, a highly thermally conductive nozzle tip (206) isremovably coupled to the nozzle body (200) and includes first(202) and second (203) nozzle tip melt channels that mergetogether before the mold gate.