Abstract: Disclosed is a high voltage electric appliance comprising electric coils whose conductors are wrapped by an insulating tape with subsequent impregnation of thermosetting resin for the electrical insulation. The insulating tape is a laminated body consisting of a built-up mica of fine mica particles and synthetic pulp or a paraffin powder and a reinforcing member. The bonding among the fine mica particles and between the fine mica particles and the reinforcing material is effected by the synthetic pulp as melted and solidified.

Abstract: A reinforced mica paper includes reinforced mica paper as a base material obtained by mechanically pulverizing muscovite mica or phlogopite mica to form scaly mica and making the scaly mica into paper, a reinforcing material layer formed on at least one surface of the base material, and an adhesive coated on and impregnated in the reinforcing material layer and consisting of a mixture obtained by mixing arbitrary amounts of a silicone resin, aluminum hydroxide, aluminum silicate, potassium titanate, and a soft mica powder. A method of manufacturing the reinforced mica paper is also disclosed.