In-mold coating of polymer composite parts for metallization...

Details In-mold coating of polymer composite parts for metallization... In-mold coating of polymer composite parts for metallization...

2005-01-18

2005-01-18

Chen, Bret (Department: 1762)

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By treating occluded solids

C427S270000, C427S404000, C427S407100, C264S232000, C264S344000

Reexamination Certificate

active

06843945

ABSTRACT:
The surface of a molded fiber reinforced polymer matrix article is prepared for subsequent metallization and painting by coating the molded article, preferably while it is still in its mold, with a layer of calcium carbonate-filled, but fiber-free polymer. The calcium carbonate-filled coating is then etched to dissolve particles of calcium carbonate from the surface layer to form fiber-free micro-pores in the surface layer. This porous provides an improved base for the deposition of a metal layer for receiving adherent paint layers and preventing “out-gassing” of the composite body during baking of the paint layers.

REFERENCES:
patent: 3980613 (1976-09-01), Bachot et al.
patent: 4039714 (1977-08-01), Roubal et al.
patent: 4157424 (1979-06-01), Boutle

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