INJECTION MOLDING SYSTEM WITH INSERTABLE INSULATING RING

摘要

An injection molding system having a heated nozzle seated in a well in the mold with an insulative air space therebetween. The nozzle has a resilient sealing and locating flange which extends outward to bridge the air space rearward of a nose portion of the nozzle. The flange abuts against a cylindrical insulating ring which is seated in the mold. The insulating ring is made of a titanium alloy and has grooves in its outer surface which form air spaces to reduce heat loss from the nozzle through the sealing and locating flange.