Injection molding of transparent plastic with glitter

Details Injection molding of transparent plastic with glitter Injection molding of transparent plastic with glitter

1998-03-24

1999-11-02

Heitbrink, Jill L.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

26432818, B29C 4546, B29K10530

Patent

active

059764465

ABSTRACT:
A process for making a clear plastic consumer product having an even distribution of glitter particles throughout its volume, start by forming a dry mixture of particles of the plastic and the glitter particles. The glitter particles are uniformly mixed with the particles of plastic in the mixture. The mixture is supplied to a hopper of an injection molding machine and then passed from the hopper to a heated cylinder of the injection molding machine to heat and melt the mixture to form an injectable mass. The injectable mass is injected into a mold cavity having the shape of the consumer product and allowed to cool and harden into the consumer product in the mold cavity. The process ended by opening the mold cavity to remove the consumer product from the mold cavity.

REFERENCES:
patent: 2230127 (1941-01-01), Basler
patent: 5804315 (1998-09-01), Takimoto et al.
Frados, Joes, Plastics Engineering Handbook of the Society of the Plastics Industry, Inc. 4th edition, pp. 26-28 and 838861, 1976.

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