LAMINATED SHEET FOR ELECTRICAL APPLICATION

PURPOSE:To obtain a laminated sheet for electrical applications with an excellent high frequency characteristic and a high dielectric constant by integrally disposing metallic foil on the upper surface and/or lower surface of a polyphenylene resin sheet containing inorganic high dielectric particles. CONSTITUTION:An polyphenyleneoxide resin containing inorganic high dielectric particles, there is used an inorganic compound or the like that has a perovskite crystallized structure of each group of BaTiO3, SrTiO3, PbTi1/2, Zr1/2O3 and the like, or composite perovskite crystallized structure, or a single or composite of TiO2, ZrO2, and SnO2, wherein the particles are preferable to use since the dispersibility and reliability becomes excellent as they are finer. As thermoplastic resin, the whole of thermoplastic resin such as polystylene, polyethylene, or the like cam be employed in the present instance. Furthermore, a single, alloy, or composite foil of copper, aluminum, brass, nickel, iron, or the like is given as metallic foil in the present instance. As required, metallic foil is integrally disposed on the upper surface and/or the lower surface of a polyphenyleneoxide resin sheet containing inorganic high dielectric particles to thereby obtain a laminated sheet for electrical applications.