Composite nozzle cap

Details Composite nozzle cap Composite nozzle cap

2011-04-19

2011-04-19

Del Sole, Joseph S (Department: 1743)

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

With means to heat or cool

C264S328150, C425S566000

Reexamination Certificate

active

07927094

ABSTRACT:
The present invention provides a composite nozzle cap having a first part made of metal and an outer tip of a polymeric material. The first part mechanically secures the nozzle into the nozzle housing by engaging the nozzle housing and pressing against a base flange on the nozzle to clamp the flange between the first part of the nozzle housing. The second part extends away from the nozzle housing and is mechanically secured to the first part. An inner face of the second part contacts the nozzle tip to prevent melt flow between the second part of the nozzle tip. An outer face of the second part contacts the gate insert to avoid melt flow between the second part and the gate insert. As the second part is of a polymeric material, it avoids the heat transfer concerns associated with a metallic interface between the nozzle tip and the gate insert.

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