Thorough prior cleaning of the surface is the prerequisite for all further treatment steps such as activation, etching or coating. ist eine vorherige vollständige Reinigung der Oberfläche. Organic contaminations, in particular oils, greases and waxes, are removed in the oxygen plasma without any residues. Inorganic residues are removed by subsequent micro-sandblasting in the noble gas plasma. Since non-polar plastics can be activated in an oxygen plasma as well, cleaning and activation can be carried out in one single production step.