Silicone bonded mica paper heater plate — A versatile electrical insulating material

For many years, design engineers have been faced with perplexing problems in finding suitable high-temperature electrical insulating materials to meet specific application requirements. Because these materials are widely used as supporting insulation for resistance wires in high-heat applications such as toaster elements, etc., they are more commonly referred to in the industry as heater plates. Many types of heater plates are being offered today which include materials such as: mechanically fastened mica splittings; organic bonded mica and mica paper plates, i.e., plates bonded with fugitive, easily volatilized resins, treated asbestos boards, glass bonded mica plates, inorganic bonded mica and mica paper plates, certain ceramics, and semi-inorganic silicone bonded mica paper heater plate. Obviously, some of these materials possess individual property or economic advantages over the others, but none is ideal, and selecting the optimum material to meet one´s particular needs is not easy.