Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1987-08-25
1989-07-11
Robinson, Ellis P.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428337, 428409, 428901, 428 304, 4283099, 427 96, 156247, 361398, B32B 300
Patent
active
048471399
ABSTRACT:
Flexible circuits are obtained in an elegant manner, without the customary etching methods, wet-chemically in accordance with the principles of semiadditive or fully additive technology by using for the activation noble metal activators and, as base material, films or flexible boards whose surface has (a) a specific total pore volume per unit area of 0.015-0.045 dm.sup.3/ m.sup.2, (b) an average pore diameter of 0.05-5.0 .mu.m and (c) an average pore depth of 0.05-4.0 .mu.m.
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patent: 3854973 (1974-12-01), Mersereau et al.
patent: 3959523 (1976-05-01), Grunwald et al.
patent: 4299863 (1981-11-01), Tanimoto et al.
patent: 4358479 (1982-11-01), Canestaro et al.
patent: 4615763 (1986-10-01), Gelorme et al.
Some Physical Properties of Electroless Copper, Grunwald et al, Plating, Oct. 1971, pp. 1004-1006.
Merten Rudolf
Sirinyan Kirkor
VON Gizycki Ulrich
Wolf Gerhard D.
Bayer Aktiengesellschaft
Robinson Ellis P.
Ryan P. J.
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