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Chemical polishing (E7)

Man and machine: A perfect symbiosis for anodising


BWB Surface technology impresses its customers with state-of-the-art system technology and targeted use of craftsmanship. BWB-Altenrhein AG, for instance, has one of the most modern, fully automatic coating systems in Europe. While the process for creating technical coatings such as Heloxal or Harteloxal PTFE is completely automated, the human manual skills are systematically employed when it comes to applications with high-quality visual elements.

Image 1: Handover station – from fully automated to manual gloss-crafting


More and more customers are asking for the E7 'chemical polished' finish in order to give aluminium components a dazzling metallic shine. But the surface quality is critically dependent on the gloss process, which needs to be perfectly tailored to the components' geometry. In the new gloss-crafting method, man takes precedence over machine. At a handover station, the fully automated system provides the components to the surface specialists for treatment. These specialists skilfully perform the pre-treatment, before the substrate is returned to the automated anodising process. The end result is a perfect surface with maximum process reliability.


Image 2: Manual pre-treatment for surface finish E7 - Chemical polishing


We would be pleased to sample the perfect surface on your product in finish E7. In addition to the natural shade, chemical polishing is is available in the colours black, blue and red.

We look forward to your enquiry and will be happy to advise you!


BWB Surface technology
Jens Schwab
+41 58 861 91 55