Injection molding process

Details Injection molding process Injection molding process

1997-04-02

1998-08-04

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Random variegated coloring during molding

264245, B29C 3912, B29C 4122

Patent

active

057888906

ABSTRACT:
A process for making injection molded articles particularly ones having swirl patterns of polyamide in an ionomer (marble effect) employing a reciprocating screw injection molding machine is provided. The process involves making a nylon/colorant master batch and using a reciprocating screw injection machine to mold the nylon/colorant master batch and an ionomer under conditions that maintain the nylon/colorant master batch in a state wherein it will flow but will have a viscosity greater than the ionomer so that it will not disperse well in the ionomer at the temperature of injection molding.

REFERENCES:
patent: 4125582 (1978-11-01), Langlois
patent: 4183673 (1980-01-01), Easley et al.
patent: 5595799 (1997-01-01), Beck et al.

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