Henkel has helped Envases Técnicos Zaragoza S.L. (Entinox), a leading Spanish manufacturer of stainless steel beer barrels (“kegs”), set up an innovative pickling and passivating line using a nitric acid-free BONDERITE® process. Benefits include superior HSE performance and bath life over traditional mixed acid pickling systems as well as outstanding corrosion resistance.
The challenge in pickling solutions for stainless steel lies in removing all scale, iron contamination and welding oxides for achieving a fully passivated surface with an even, clean and aesthetic finish. In the food industry and for key products such as beer kegs, the surface must also be absolutely free from any traces of pickling agents after the process. In addition, manufacturers face increasingly strict health, safety and environmental (HSE) regulations with regards to the release of potentially harmful substances, such as NOx emissions in air and nitrate effluents in water.
“In our state-of-the-art keg plant at Zaragoza, we decided to implement Henkel’s BONDERITE® C-CP 1300 pickling and passivating process because of its excellent combination of high productivity and uncompromising sustainability,” states José Enrique Gerona, General Manager of Entinox. “Moreover, Henkel’s experts were instrumental in helping us set up and optimize the process.”