Insulation Mylar PET Polyester Film Sheets Coated With Adhesive Descriptions: Polyester Sheets(PET Film), is a polyester film made from stretched polyethylene terephthalate (PET) and is used for its high tensile strength, chemical and dimensional stability, transparency, reflectivity, gas and aroma barrier properties, and electrical insulation. Features: High purity. Degree of uniform thickness. Good insulating property and temperature resistance. Have no concave or convex ,no scratch etc. Applications: It is widely used for electrical insulating gasket,electric appliance,adhesive products,Printing industry,adhesive lables,die-cutting,stamping