Ester Base Films are Bi-axially oriented polyester films that provide an excellent combination of optical, physical and chemical characteristics.Base films are available in various versions such as Plain, Chemical Coated, Acrylic Coated and Metallized films. Coated films provide excellent surface properties for a variety of applications. These pre-treated PET films improve adhesion to water & solvent based printing inks, coatings & adhesives and metal & other substrates.