“Painting with films can save up to 80 % of the energy needed for sprays,” says Helge Warta, the head of painted film systems at Wörwag.
“And the two processes provide the same results,” he adds. Wörwag can produce around 550,000 square meters of painted film a year, which would cover around 77 soccer fields.
“We make the film under controlled cleanroom conditions in foil form, and then roll it,” says Warta. This means that entire coating systems can be supplied as films. Instead of having to spray each layer on individually, users can apply a multilayer film in a single step. “We can even do metallic effects,” says Warta.
Painted films make sense for geometrically simple surfaces made of plastic or metal. They currently have two main fields of application. They serve as decorative films for laminating window frames and other plastic components in buildings. And with a different structure, they serve as transfer films for coating vehicle body parts. One example would be the water deflector for the A-, B-, C-, E-, G-, and S-class cars from Mercedes.
Photos: Frederik Laux; Daimler AG