Rigid laminated material, constructed of muscovite or phologpite mica paper with silicon resin. They are known by its excellent thermal resistance, good flame resistance, high dielectric strength, excellent physical strength, and little smoke by heating. The products have been widely used in the industries of household electric appliances (clothes irons,hair dryers, toasters, kettles, cooking appliances, microwave ovens, air heaters), metallurgy (frequency furnace, intermediate frequency furnace, arc furnace), medical appliances, etc.