Understanding the different types of food packaging films and their applications can be confusing. With names like Low Density Polyethylene (LDPE), Cast Polypropylene (CPP), Metallized Oriented Polypropylene (MET-OPP) or Polyethylene Terephthalate (PET), one might think you need to be a chemistry major. Read our “Understanding Food Films” to better understand the types of food films /properties and the types of food they package.