Synthetic polymer paper has to meet special requirements concerning the printing process and the usage demands, such as thermal, optical and haptic properties. For instance, the paper has to withstand the thermal exposure during printing with a fixing temperature up to 200°C. Apart from that, the synthetic paper must provide ecological (e.g. less environmental pollution) and economical (e.g. lower investment costs) advantages. The main target of this Ph.D. thesis is the development of a process for producing synthetic paper based on renewable polymer resources. The wide property profile that synthetic paper has to provide can only be achieved with a multi-layer film. High-filled outside layers determine haptic, optical, thermal and mechanical properties while a foamed middle layer reduces weight and costs. Based on this 3-layer structure, different layer distributions, mixing ratios and processing techniques were examined. The process comprises coextrusion via adapter- and multimanifold-die, biaxial stretching including thermosetting and irradiation using electron beam. The produced synthetic paper possesses properties (e.g. mechanical isotropy, water resistance) that are in the range of common office paper or even better. Only a reduced stiffness at higher temperatures will be problematic when printers with complicate handling systems are used or with double side printing. In principle, the life cycle assessment shows that synthetic paper is more ecological. Based on the fact that some data for PLA (e.g. CO2-storage of cornfields or the production of PLA out of secondary crop materials) are not available, it is assumed that the ecological advance of synthetic paper is effectively higher.