Coating processes – Nonuniform coating – Deforming the base or coating or removing a portion of the...
Patent
1977-11-07
1979-07-03
Smith, John D.
Coating processes
Nonuniform coating
Deforming the base or coating or removing a portion of the...
204 38B, 427305, 427306, 427307, 427404, 427430A, 427438, C23C 302
Patent
active
041600495
ABSTRACT:
An adherent, bright metallic nickel coating is applied to the surface of a plastic or other dielectric part (or to a metal part) by an electroless process comprising, after suitable pretreatment of said surface, the deposition of a primary electroless nickel possessing special properties followed by a secondary electroless nickel of bright appearance with complete elimination of any subsequent electroplating process usually required to achieve this brightness. The nickel coating may be limited to selected surface areas of a coated part by mechanically removing portions of the primary coat prior to immersion of the part in a secondary electroless nickel bath.
REFERENCES:
patent: 3212917 (1965-10-01), Tsu et al.
patent: 3817774 (1974-06-01), Kuzmik
patent: 3878007 (1975-04-01), Feldstein et al.
patent: 3953624 (1976-04-01), Arnold
patent: 3959523 (1976-05-01), Grunwald et al.
Industrial Finishing, "How to Get Quality Plated Plastic Parts", pp. 36-39, Nov. 1977.
Pearlstein, Modern Electroplating, John Wiley & Sons, pp. 710-725, c 1974.
Pushpavanam et al., Finishing Industries, pp. 48-58, Jun. 1977.
Cohen Jerry
Smith John D.
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