Powder coil coating: With innovative processes towards new products and surfaces

The combination of a novel powder coating technique working without spray guns, based on the electrostatic fluidised bed principle, and high-performance infrared radiators, makes the option for high-speed powder coil coating and curing processes at line speeds of more than 1 m/s available. For the fast curing process, special powder coatings have been developed, being highly reactive, and having a high degree of plasticity needed due to the deep drawing process of the precoated coil sheets. Electrical and gas-powered infrared radiators including NIR, STIR, and porous gas burner, have been compared in terms of high decorative and functional coating quality, as well as in terms of short curing time and high energy efficiency. With the new coil coating technology, new markets for powder coating shall be developed, e.g. automotive body parts and architecture.

Die Kombination aus einem neuen pistolenlosen Pulverbeschichtungsverfahren und Hochleistungs-Infrarotstrahlern ermöglicht bisher nicht mögliche schnelle Pulverapplikations- und Einbrennprozesse. Dies erlaubt die Pulverbeschichtung von Coils mit Geschwindigkeiten von über 1 m/s sowie die Gestaltung extrem kompakter Pulverapplikations- und Einbrennzonen. In Verbindung mit neuentwickelten hochumformstabilen Niedertemperatur-Pulverlackmaterialien eröffnen sich damit neue Märkte für pulverbeschichtetes Coil. Vorgestellt werden Beispiele aus dem Automobil- und Baubereich.