The atmospheric plasma process is used for surface pretreatment of materials by means of an ionized gas jet. This plasma results in a cleaning as well as a chemical change and activation of the surface, which considerably improves the adhesion forces on numerous substrates. In addition to these processes, the atmospheric plasma offers the possibility to coat a wide range of materials with a suitable carrier substance. This allows the adhesion problems on these surfaces to be specifically countered. In order to adapt the process of the open air plasma to the respective materials, various parameters, such as the nozzle spacing, the speed and the offset, can be adjusted accordingly.