Thermally balanced hot runner nozzle

An injection molding machine comprising:

• an inlet nozzle for introducing a molten material to the molding machine;
• a manifold in communication with said inlet nozzle for receiving and distributing said molten material;
• and
• a plurality of injection nozzles in communication with said manifold for receiving said molten material, said injection nozzles being in communication with corresponding mold cavities, each of said injection nozzle having a nozzle body with a heater channel in an outer surface thereof, a nozzle tip and a nozzle heater retained in said heater channel along at least a portion of the length of the nozzle body, wherein a heat distributor layer is of a more conductive material than a material of said nozzle body and is coupled directly to said nozzle body, said nozzle tip and said nozzle heater for distributing heat from said nozzle heater along the length of said nozzle body and said nozzle tip.

A nozzle for an injection molding machine comprising:

• a nozzle body defining a melt channel;
• a heater wrapped around the nozzle body;
• a first dielectric layer located radially outward from the heater and directly contacting the heater;
• and
• a heat distributor layer disposed radially outward from the first dielectric layer and directly contacting the first dielectric layer, the heat distributor layer being formed of a conductive material for distributing heat from the heater along the length of the nozzle body.