Hot runner system for coinjection molding

Details Hot runner system for coinjection molding Hot runner system for coinjection molding

B - Operations, Transporting

29

C

B29C 45/74 (2006.01) B29C 45/17 (2006.01)

Patent

CA 2360509

A coinjection molding system for injecting first and second plastic materials into a mold cavity. The system includes a manifold having first and second channels for distributing first and second plastic materials and at least one nozzle coupled to the manifold for injecting said first and second plastic materials from said manifold into said mold cavity. The nozzle has first and second passages for receiving said first and second plastic materials from said first and second channels of said mani- fold, respectively. A shut-off in the first channel of said manifold is provided for preventing a flow of said first material in said first channel.

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