Injection molding nozzle having nose portion with heating...

Details Injection molding nozzle having nose portion with heating... Injection molding nozzle having nose portion with heating...

B - Operations, Transporting

29

C

18/703

B29C 45/74 (2006.01) B23P 15/00 (2006.01) B29C 45/27 (2006.01)

Patent

CA 1280268

ABSTRACT OF THE DISCLOSURE An integral sprue gated injection molding nozzle and method having a melt bore extending centrally therethrough wherein a circular forward end portion of the electrical heating element encircles the melt bore in the nose portion to provide additional heat adjacent the gate. The method includes locating the circular portion of the heating element in a circumferential space between a hub member and a funnel member and integrally brazing them together in a vacuum furnace to form the nose portion of the nozzle. The nose portion is drilled and machined to provide the desired gate and configuration depending upon the particular application.

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