What is PET Open Agent Film Chips? PET Open Agent Film Chips are plastic chips made of polyethylene terephthalate (PET) that contain an open agent, which helps to improve the adhesion of inks and coatings to the surface of the film. It is uniformly depressed anti-adhesive, with excellent film-forming properties; polymerization of continuous device production makes the quality high and stable. As an opening agent to be used with film grade base materials to produce various types of films. It can be used in films with special requirement for optical and surface properties or ultra-films below 8u. Can be used directly in foodstuffs after FDA approval.