METAL LAYER LAMINATE WITH METAL SURFACE ROUGHENED LAYER AND PROCESS FOR PRODUCING THE SAME

摘要

A metal layer laminate with metal surface roughened layer having surface characteristics such that even when the surface roughness is low, high adherence to resin materials would be realized; and a process for easily producing a metal layer laminate composed of a metal layer and a resin substrate or resin insulating film or the like, excelling in the adherence to resin materials. The metal layer laminate comprises a metal layer and, superimposed on the surface thereof, a resin thin film and a metal surface roughened layer. In the metal layer laminate, the interface structure of resin thin film and metal surface roughened layer appearing when the metal layer laminate is split in the normal direction thereof is fractal. The fractal dimension of the interface structure calculated in accordance with the box count method setting the measurement object region to 50 nm to 5 μm and setting the box size (pixel size) to 1/100 or less of the measurement object region is in the range of 1.05 to 1.50. The metal layer laminate can be obtained by a process comprising the steps of forming a resin thin film on the surface of a metal layer and performing plating on the metal layer with the resin thin film.