PET materials are selected for applications that require clarity, strength, and barrier properties. Packaging and Containment A primary function is in packaging. PET film (often referred to as Mylar, a brand name) is used for food packaging bags, snack food liners, and as a component in laminated structures for extended shelf life. Thermoformed PET sheets are used to make transparent clamshell...

Introduction Biaxially Oriented Polyethylene Terephthalate (BOPET) film — often simply called PET film — is a versatile polymer film produced by stretching polyethylene terephthalate in both the machine and transverse directions. This biaxial orientation gives the film high strength, dimensional stability, optical clarity, heat resistance, and excellent barrier properties, making it...