It is true that sophisticated atomizer technologies and paint mist separation processes are succeeding in minimizing the consumption of resources for painting processes in the automotive sector. But much better than less overspray and filtered exhaust air is, of course, no overspray at all. Just a few years ago, a series production process with an overspray-free painting process seemed downright utopian. But as early as the end of 2020, a renowned Bavarian automobile manufacturer presented to the trade press the first series production process for an overspray-free applied contrast paint finish - with the EcoPaintJet from Dürr. However, this first generation required a start-up and run-down distance of several centimeters, which meant that selective applications in the center of a surface or even special patterns were not possible. For this purpose, the BMW Group, together with the machinery and equipment manufacturer Dürr, further developed the new application process with the EcoPaintJet Pro for processing the waterborne paints and the 2K clear coat. The new process does not require electrostatics and works with a jet application. Here, a nozzle plate forms fine paint jets that enable edge-to-edge application with variable coating widths between one and around 50 millimeters. Both classic two-tone finishes such as a contrasting roof and the application of stripes and patterns are possible.
Read more about the first planned series applications of the latest generation of overspray-free coating in the automotive sector in the March issue of Surface Technology magazine or online right here.