Injection molding valve gated hot runner nozzle

Details Injection molding valve gated hot runner nozzle Injection molding valve gated hot runner nozzle

2011-07-05

2011-07-05

Heitbrink, Tim (Department: 1744)

Plastic article or earthenware shaping or treating: apparatus

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

With means between charger and mold to cut off flow of...

C425S566000

Reexamination Certificate

active

07972132

ABSTRACT:
A valve gated hot runner nozzle with at least two transition members made of different materials located between a nozzle tip and a mold gate component to provide a thermal transition region. A first transition member in contact with the nozzle tip is less thermally conductive than a second transition member in contact with the mold gate component. The valve pin when in the closed position makes sealing contact with at least the second transition member such that cooling from the mold gate component is transferred to the valve pin to cool the melt in the mold gate area.

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