Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1977-04-20
1982-02-02
Lesmes, George F.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
156253, 156261, 427 96, 427275, 427259, 427292, 428901, 428209, 428304, 428432, 428195, 4283202, B32B 300
Patent
active
043139957
ABSTRACT:
There is disclosed a method for producing an electrical circuit board comprising the steps of selectively treating a portion of a conductive metal sheet in a pattern substantially corresponding to a predetermined printed circuit configuration and in a manner which renders the pattern portion of the sheet essentially adherent to a resin, placing the treated pattern portion of the sheet in direct contact with a layer of resin on the surface of an insulating substrate to form an assembly, uniformly heating the assembly to an elevated temperature to selectively bond the substrate to the treated pattern portion of the sheet, cutting the sheet along the perimeter of the pattern portions and stripping the non-pattern portions of the sheet from the substrate to form a circuit board.
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patent: 3981761 (1976-09-01), Kojima et al.
patent: 4012552 (1977-03-01), Watts
Buffalow E. Rollins
Fortin Laminating Corporation
Lesmes George F.
Madsen Raymond L.
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