Chemistry: electrical and wave energy – Processes and products
Patent
1983-09-29
1984-11-06
Tufariello, Thomas
Chemistry: electrical and wave energy
Processes and products
204 30, C25D 502, C25D 506
Patent
active
044810814
ABSTRACT:
If necessary, initial cleaning of the plastic and masking of areas not to be plated are carried out. Contact points for cathode leads are chosen spaced from the area to be plated. Said area and the contact points are cleaned with a solvent. The contact points are prepared for a brush plating operation. If necessary, this preparation includes an initial abrading of the contact points with fine grit sandpaper. Preferably, the preparation comprises making a cathode lead contact in the area to be plated and brush plating the contact points to about 0.1 mil at a low current density, using an alkaline plating solution. The cathode lead contact is disconnected and the contact points are rinsed. A cathode lead is then connected to each contact point and brush plating of the area to be plated is carried out at a current density sufficiently low to prevent overheating of the plastic, using an alkaline plating solution. Preferably, the brush plating begins at a very low current density until said area is essentially completely covered, and the current density is then increased.
REFERENCES:
patent: 2061592 (1936-11-01), Rapids
patent: 3755089 (1973-08-01), Rapids
patent: 3865697 (1975-02-01), Suggs
patent: 4035246 (1977-07-01), Rapids
Pauly Joan H.
The Boeing Company
Tufariello Thomas
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