| abstract |
A substrate, a polymer layer accommodating a plating catalyst or a precursor thereof, and a metal film formed by plating in this order, and the surface roughness Ra at the interface between the substrate and the polymer layer is referred to as x m, The surface metal film material of x> y and 5 micrometers> x> 0.1 micrometer when surface roughness Ra of the interface of the said metal film is y micrometer. |