Flat membranes with thicknesses between 20 and 200 μm and a width of 300 mm can be manufactured by a roll-to-roll process. Both temperature and atmosphere can be controlled during casting. Precipitation baths with temperatures between 4 – 90°C are available. The main focus at Fraunhofer IGB lies in the processing of mixed-matrix systems. Both dense and asymmetric porous membranes can be obtained by solvent evaporation and phase inversion processes respectively. In addition, several functional layers could be calendered to complex systems.