Multiple gating nozzle

Details Multiple gating nozzle Multiple gating nozzle

B - Operations, Transporting

29

C

B29C 45/16 (2006.01)

Patent

CA 2247867

-21- A method and apparatus for runnerless injection molding of plastic materials utilizing a novel valve stem for controlling the opening and closing of at least two gates in a single injection nozzle. The method and apparatus includes at least two separate melt streams whose flows are not obstructed by the valve stem. These melt streams may contain the same plastic material or different plastic materials and the injection nozzle may be either simultaneously or sequentially activated for filling the mold cavity.

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