To be able to print and coat plastic films, the surface tension of the material must first be increased. In addition, coating requires long-term stability of surface activation. In the methods previously available, such as corona treatment or flame treatment, surface tension decreases after a short time.
Pretreatment with the Openair® process results in reliable surface activation of the plastic films – activation that displays outstanding long-term stability. Inks and coatings are optimally absorbed.
Openair® film systems use special slot nozzles. They it make possible to reliably treat film with atmospheric-pressure plasma over any width. An additional positive side effect of treating the plastic with Openair® plasma is a noticeable anti-static effect.