Method for manufacturing mixing impeller

Details Method for manufacturing mixing impeller Method for manufacturing mixing impeller

1993-02-26

1999-03-30

Aftergut, Karen

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

264311, B28C 3908

Patent

active

058884408

ABSTRACT:
A method of making an impeller having inner and outer portions of polyurethane resin having different flexibilities with the outer portion bonded to the inner portion and having greater flexibility than the inner portion, includes rotating a centrifugal casting mold containing a polyurethane resin forming material of predetermined composition, introducing into the inner portion of the mold another polyurethane resin forming composition of different composition than the first material, centrifugal casting the inner and outer portions together, and curing the resulting shape to form a disk having bonded inner and outer portions of polyurethane resin having different flexibilities.

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