Nonwoven polyester web as a flexible electrical insulation

The development of the polyester nonwoven mat has culminated many years of searching for a high performance backing suitable for flexible electrical insulation. With the use of polyester fibers, a backing superior to cotton in moisture and thermal resistance was possible. The polyester nonwoven mat also overcame the deficiencies of glass fabric in conformability and retention of dielectric strength after crease. These desirable characteristics have given the insulation systems based on polyester nonwoven mat a major position in today´s insulation market.