Patent ID: 6701997
Filing Date: 2004-03-09
Classification: B22D,B22F,B23P,B29C,B33Y,C23C

Abstract:
A hot runner injection molding apparatus, comprising:(a) a melt conveying system having (i) a melt distribution manifold having at least one melt passage for transferring melt from a source of pressurized melt, and (ii) at least one injection nozzle having a nozzle melt passage therethrough, said nozzle melt passage in fluid communication with said at least one manifold melt passage; (b) at least one mold cavity adjacent said at least one injection nozzle, said mold cavity in fluid communication with said nozzle melt passage of said at least one injection nozzle, (c) wherein at least one of said melt distribution manifold and said injection nozzle comprises a body and a heating element capable of heating at least a portion of said body; wherein at least a portion of said body is made of a parent metal, said parent metal being at least partially infiltrated with a second metal having a different thermal conductivity than said parent metal.