This composite offers the forming and mechanical properties of vulcanized fibre with the excellent electrical
properties of polyester film. The composite is obtained in rolls and can be converted
into other forms. Polyester film can be applied to one or both sides. It can also
be placed between 2 plys of vulcanized fibre. The union of vulcanized fibre with
polyester film results in higher dielectric strength, tear strength, and bursting
strength when compared to standard vulcanized fibre. Polyester film will also
act as a moisture barrier in applications where standard vulcanized fibre is too
sensitive to moisture.
Recommended for use as slot insulation where vulcanized fibre is shaped to fit
the slot and acts as a backer for poly-ester film. In this application, vulcanized
fibre adds the required stiffness or rigidity to allow the wedge to be properly
Vulcanized Fibre: 0.005" to 0.020"
Polyester Film: 0.001" and 0.002"
Sheet, Roll and Coil