Strippable resists

Details Strippable resists Strippable resists

1982-03-29

1983-12-20

Smith, John D.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428206, 428480, C23F 102

Patent

active

044218141

ABSTRACT:
A printed circuit board is formed from a metal-clad substrate by applying a solvent-free, non-dryable ink in a predetermined pattern on the substrate, dusting powdered resin over the surface, removing any resin powder not retained by the ink from the surface, heating the substrate having the ink powder thereon to a temperature so as to fuse the powdered resin to form a strippable resist, etching the uncoated portion of the metal laminate and stripping the resist subsequent to etching.

REFERENCES:
patent: 2110219 (1938-03-01), Green et al.
patent: 3640219 (1972-02-01), Farnham
patent: 3854973 (1974-12-01), Meksereau
patent: 3911160 (1975-10-01), Neuberg
patent: 4073981 (1978-02-01), Baron
patent: 4145460 (1979-03-01), Finley
Hercules Incorporated Product Data Sheet No. 7167-3, 7166-2 (publication date unknown).
"Piccolastic" published by Pennsylvania Industrial Chemical Corporation (publicaton date unknown).

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