Conductive adhesive layer, the conductive adhesive sheet, and the printed wiring board

A temporary tension resistance good blocking, and the surface - the surface contact hardly occurs, have good adhesive strength between the reinforcing plate, conductive conductivity has good conductive adhesive layer adhesive sheets and it and to provide a printed wiring board using. The invention relates to a conductive adhesive layer used to form on a release film, Surface roughness Ra of surface B of the release film side is 3 to 6 [mu] m, Surface roughness Ra of the other surface A is resolved by the conductive adhesive layer, which is a 0.2～1.1Myuemu. .FIELD 1