C - Chemistry – Metallurgy – 25 – D
Patent
C - Chemistry, Metallurgy
25
D
204/12
C25D 5/02 (2006.01) C23C 18/16 (2006.01) C23F 1/16 (2006.01) C25D 5/56 (2006.01) H01R 13/658 (2006.01) H05K 3/10 (2006.01) H05K 3/24 (2006.01)
Patent
CA 1276128
METHOD FOR SELECTIVELY PLATING PLASTICS Abstract of the Disclosure: A method for plating first selected surfaces of a platable plastic substrate without plating second selected surfaces is disclosed. The method comprises first electrolessly plating the substrate to provide an electroless metal layer over all of the first selected surfaces and at least a portion of the second selected surfaces. The substrate is then mounted on an electro- plating rack so that the current density at the second selected surfaces is lower during electroplating than at the first selected surfaces. The substrate is then electroplated to provide one or more intermediate metal layers which extends over at least all of the first selected surfaces and then electroplated with a final metal different from the metals of the electroless and intermediate layers at a voltage whereby the final metal deposits over the first selected surfaces but not over the second selected surfaces. The electroplated substrate is then immersed in a stripping solution which dissolves the electroless and intermediate metals but not the final metal for a time sufficient to dissolve the electroless and intermediate metals covering the second selected surfaces.
504767
Coombes Robert Law
Huesken Kay
Crown City Plating Co.
Oyen Wiggs Green & Mutala Llp
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