ELECTROMAGNETIC WAVE SHIELDING MATERIAL AND PROCESS FOR PRODUCING THE SAME

摘要

An electromagnetic wave shielding material that exhibits a high electromagnetic wave shielding effect, excelling in transparency and sight through property; and a process for producing the electromagnetic wave shielding material simply and easily at low cost. There is provided a process for producing an electromagnetic wave shielding material, characterized by first providing a transparent resin base material having a transparent porous layer composed mainly of at least one member selected from the group consisting of oxide ceramics, nonoxide ceramics and metals; subsequently screen printing the surface of the transparent porous layer with a conductive paste containing granular silver oxide, a silver salt of tertiary fatty acid and a solvent into geometrical pattern; and thereafter heating so that a conductive part of geometrical pattern is disposed on the surface of the transparent porous layer. Further, there is provided an electromagnetic wave shielding material produced by this process.