Pump impellers and manufacture thereof by coinjection molding

Details Pump impellers and manufacture thereof by coinjection molding Pump impellers and manufacture thereof by coinjection molding

F - Mech Eng,Light,Heat,Weapons

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F04D 29/18 (2006.01) B29C 45/00 (2006.01) B29C 45/16 (2006.01) F01C 21/08 (2006.01) F04C 5/00 (2006.01) F04D 29/26 (2006.01)

Patent

CA 1214608

ABSTRACT A pump impeller and a method for its manufacture wherein the impeller is made of two different synthe- tic plastics using a co-injection molding process. One plastic, used to fabricate a core section of the impeller, is a rigid thermoplastic material. The other plastic, used to fabricate the vanes section, is a thermoplastic elastomer. The latter is injected after the rigid thermoplastic material.

448701

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