This is a 3-layer laminate consisting of polyester film with roll pressboard backing on both sides. This special laminate proves to be extremely tear-resistant and is characterized by a high dielectric strength. The pressboard layer absorbs the impregnating agents used in engine construction excellently and thus prevents unfavorable air pockets. This results in improved heat dissipation from the winding copper to the iron core.
Pressboard/PET film/Pressboard laminate
Product view
Example image of an insulating part made from pressboard/PET film/pressboard laminate
This international standard distinguishes between thermal classes for electrical insulation systems and electrical insulation materials.
According to the DIN EN 60085 standard, pressboard/PET film/pressboard laminate belongs to insulation class B up to 130°.