Coating processes – Electrical product produced – Welding electrode
Patent
1982-07-09
1984-04-03
Smith, John D.
Coating processes
Electrical product produced
Welding electrode
427 98, 427306, C23C 302
Patent
active
044408013
ABSTRACT:
A method for selective electroless deposition of a metal (Cu, Ni, Au, Ag) onto a polyester substrate, such as poly(ethylene terephthalate) is described. A combination of ultraviolet exposure of wavelengths <220 nm and a pre-treatment step is used to obtain selective electroless deposition. The polyester layer is first irradiated with uv light of wavelengths <220 nm and is then subjected to a pre-plating pre-treatment with a basic solution. After this, the desired metal is deposited by conventional electroless deposition. Substantial deposition will occur only in those areas which were both exposed to the uv light and subjected to the pre-plating treatment.
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Feldstein, "Selective Electroless Plating Techniques: A Survey" Plating, Aug. 1970.
Aviram Ari
Mayne-Banton Veronica I.
Srinivasan Rangaswamy
International Business Machines - Corporation
Smith John D.
Stanland Jackson E.
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