For the first time ion beam techniques were investigated systematically with the aim industrial application. At first a vacuum chamber was constructed and built especially for the ion beam bombardment of polymers. This apparatus is also suitable for large area IBAD processing. Afterwards basic investigations showed the chemical changes induced by the ion beam in the polymers. Application oriented investigations were devoted to increasing the adhesion at the interface polymer/metal and to the barrier effects of the irradiations. In both cases considerable improvement was obtained in comparison with the non modified polymers. The improvement by ion beam techniques was compared with the one obtained with alternative modification methodes. (ori...