Patent ID: 11472165

Abstract:
A plate-like composite material in which peeling of a conductor layer and the like serving as wiring is less liable to occur is provided. The plate-like composite material includes: a pore-containing layer, which contains a fluororesin and a filler, and which contains pores; and a resin layer containing a fluororesin bonded to one surface, or each of both surfaces, of the pore-containing layer, wherein the pore-containing layer includes, in a vicinity of an interface with the resin layer, a high resin content region, which contains the fluororesin in a content higher than a content in a remaining region of the pore-containing layer, and which contains the pores in a content lower than a content in the remaining region, and wherein the high resin content region has a thickness starting from the interface of from 0.20 μm to 10 μm.