Dry coating

Dry coating has become a key technology when surfaces need to be finished in a reliable and resource-saving manner. The process uses powdered coating materials without liquid solvents, eliminating VOC emissions and energy-intensive exhaust air or drying steps. This is becoming increasingly important, particularly in energy-optimized production processes.

The process is based on the electrostatic charging of the powder, which is applied to the workpiece and evenly deposited there. Application is followed by thermal or UV-based cross-linking. Factors such as conductivity, particle size and surface energy determine the coating quality. Modern systems control powder quantity, application field and flow conditions so precisely that homogeneous coating patterns and minimized overspray are achieved.

Industrial applications are increasingly expanding beyond the metal sector. Today, adapted polymer powders enable coatings on plastics or composite materials with low temperature limits. Advances in binder chemistry are improving scratch and chemical resistance and enabling thin, opaque coatings with high efficiency. Sustainability is also contributing to the growing relevance. The virtually loss-free use of materials reduces costs and resource consumption and ensures stable process control with lower reject rates. In digitized systems, sensor technology, recipe management and data-based coating thickness control ensure reproducible results in multi-variant production. Dry coating is thus establishing itself as a versatile surface technology process that enables functional and decorative applications and plays an important role in future low-emission coating concepts.