Valve for coinjection molding apparatus

Details Valve for coinjection molding apparatus Valve for coinjection molding apparatus

B - Operations, Transporting

29

C

B29C 45/13 (2006.01) B29C 45/20 (2006.01) B29C 45/27 (2006.01)

Patent

CA 2616514

A coinjection molding apparatus includes at least one manifold having a first manifold melt channel and a second manifold melt channel. A hot runner nozzle is located between the manifold and a mold gate. The nozzle has melt channels communicating with the first manifold melt channel and the second manifold melt channel. A valve has a movable valve member for increasing and decreasing flow of melt in one of the melt channels of the nozzle. The valve member receives a pressure force from the melt. An actuator provides a control force to the valve member. The valve member moves in response to a difference between the pressure force and the control force.

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