Electrical printed circuit boards

Details Electrical printed circuit boards Electrical printed circuit boards

B - Operations, Transporting

32

B

356/1, 117/66

B32B 3/00 (2006.01) H05K 3/18 (2006.01) H05K 3/38 (2006.01) H05K 3/10 (2006.01)

Patent

CA 1249187

Electrical printed circuit boards A b s t r a c t Electrical printed circuit boards are obtained in an elegant manner without the usual etching methods and without using bonding agent layers in a wet chemical manner on the basis of the principles of the semi or fully addi- tive technique by using precious metal compounds for activation and base material of a type which has a) a specific total pore volume per unit area of 0.015-0.045 dm3/m2, b) a mean pore diameter of 0.05-5.0 µm and c) a mean pore depth of 0.05-4.0 µm.

504513

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