To improve the packaging appearance caustic inhibitors, protective coatings, pressure reduction on bottling lines and plastic coated bottles have been developed, although none has proved entirely successful. As an alternative a one way silicon oil based maskant is described, together with prototype applicators, process of application and its requirements. The maskant applied after labelling is removed upon each return in a special designed bottle washer. The process of glass corrosion is documented.
Keywords : bottle washer coating corrosion glass bottle removal