Method of molding a product having low gloss surface

Details Method of molding a product having low gloss surface Method of molding a product having low gloss surface

1996-03-27

1998-03-17

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

With step of cleaning, polishing, or preconditioning...

264338, 2491141, B29C 3356

Patent

active

057283281

ABSTRACT:
A method for manufacturing a resin product with a mold having at least two molds opposed to each other. Each of the molds 5 has a cavity surface defining a space therebetween. The method includes the steps of performing an ionic nitriding treatment to at least a part of at least one cavity surface to form fine projections and recesses therein. A nitride layer is provided on the one cavity surface. The method further includes filling the space with a plastic resin material, solidifying the resin material, and removing the solidified resin material from the mold.

REFERENCES:
patent: 4534921 (1985-08-01), Fierkens et al.
patent: 5008002 (1991-04-01), Uno et al.

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