A cast film is extruded from plastic granulate and stretched by applying mono- or biaxial orientation. Due to a change in the morphology of the molecular structure the films acquire a wide variety of advantageous properties as well as a reduction in total thickness:
optimal physical properties (e.g. stiffness, tear strength), good optical characteristics (e.g. transparency or gloss) and unmatched barrier properties. In comparison to other packaging materials, oriented films are lightweight and energy-efficient to produce.