Polypropylene films were treated with corona and a primer based on polyethyleneimine was applied to improve adherence. EVOH coating was applied on the PP films, keeping an area uncoated to maintain sealability for the manufacture of the salad bags. Specifically, of the 1140 cm2 of film that was used to manufacture a bag, only 750 cm2 of surface was coated. Control films were obtained without active agents (CONTROL). Thicknesses of the films were measured at 10 points of samples. The thickness of the coating was calculated from the difference in thickness between coated and uncoated areas.