Process for preparing printed circuits

Details Process for preparing printed circuits Process for preparing printed circuits

1975-10-23

1977-01-04

Powell, William A.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

156 3, 156 7, 156 22, 156150, 156237, 156246, 156249, 156280, 156289, 156330, 427 98, 427307, 427322, H05K 300, C09J 700, C23C 302

Patent

active

040014665

ABSTRACT:
The invention relates to printed circuits and to insulating substrates useful in their preparation.
The invention provides a process for preparing an insulating substrate by curing a layer of an etchable synthetic rubber and a thermosettable resin to give a selectively etchable layer, superimposing the layer on a fibrous sheet or web impregnated with a thermosettable resin and consolidating the assembly as produced by heating under pressure.
Printed circuits prepared from the insulating substrates have superior peel strength.

REFERENCES:
patent: 2680699 (1954-06-01), Rubin
patent: 2684350 (1954-07-01), Williams
patent: 3131103 (1964-04-01), Bogue et al.
patent: 3215574 (1965-11-01), Korb
patent: 3347724 (1967-10-01), Schneble et al.
patent: 3526573 (1970-09-01), Kepple et al.
patent: 3625758 (1971-12-01), Stahl et al.
patent: 3686359 (1972-08-01), Solidatos et al.
patent: 3758304 (1973-09-01), Janssen et al.

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