As the only packaging coatings company with expertise in waste treatment, PPG works with can makers to provide polymers for effectively treating large volumes of plant waste at minimal cost.
PPG's world class technology offering to the packaging industry includes washer chemicals for two-piece can production and waste treatment services, making PPG the only coatings supplier to also sell and service pretreatment.
For two-piece aluminum beer and beverage can production, PPG supplies pretreatment chemicals that remove organic contaminants and etch the metal surface to prepare it for the subsequent application of inks and varnishes. PPG is the only pretreatment supplier with fully commercial offerings in both the traditional acid and more advanced alkaline technologies. In addition, products which are applied to the cans to enhance their mobility through the decorating process are part of our core offering to the industry. Finally, for special application where retort requirements are severe, PPG provides superior adhesion and stain resistance through the application of our proprietary conversion coating technology.
PPG's unique alkaline-based pretreatment chemicals are formulated for enhanced employee safety and reduced environmental hazard. In addition to these benefits, customers using this process often report a cleaner, brighter, more consistent finish due to the type of etch achieved with higher pH. An operational benefit of this approach is the shorter wash time and lower temperature required to achieve the same degree of etch as with the traditional acid process.