Method of preparation of a substrate made of plastic material fo

Details Method of preparation of a substrate made of plastic material fo Method of preparation of a substrate made of plastic material fo

1978-02-06

1979-08-21

Newsome, John H.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

427300, 427306, 427259, B05D 306

Patent

active

041653947

ABSTRACT:
Method for pretreating a plastic substrate prior to metallization thereof by electroless metal deposition by applying a brush discharge thereto, the current density of which is higher than 0.5 mA/cm.sup.2, the tension of which being less than the breakdown tension of the substrate and the total charge of energy applied being no higher than 20mC/cm.sup.2 ; the treatment comprising plural short spaced exposures of said substrate to said discharge. Various masking means are employed to provide selectively treated and untreated portions on the substrate.

REFERENCES:
patent: 3317339 (1967-05-01), Fortner et al.
patent: 3362841 (1968-01-01), Menikeim et al.
patent: 3471320 (1969-10-01), Saubestre et al.
patent: 3686018 (1972-08-01), Lindbloom et al.
patent: 3874877 (1975-04-01), Omichi et al.
patent: 3954570 (1976-05-01), Shirk et al.
patent: 4002778 (1977-01-01), Bellis et al.

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