Laminated mica — A new insulation material

Mica is surely no stranger to the manufacturer of rotating electrical machinery; it is as old as the industry. Within the last three to five years or so, a quiet revolution has begun in the mica industry. New synthetic binders have come into general usage, new forms of mica have become standard products. Mica papers, in tapes and in sheets, have given industry products which are so unlike the old that a complete reexamination of mica products is in order. Among these new products are mica laminates.