Dipl.-Ing. Lennart Ederleh, born in 1975, studied mechanical engineering at RWTH Aachen University with production technologies as major subject. Since March 2004, he has been working as scientific engineer at the Institute of Plastics Processing at RWTH Aachen University in the Extrusion and Further Processing Department. The emphasis of his work is in the field of thermoforming with focus on thermoforming multi-layer sheets with In-Mould-Graining. Furthermore, he is working on a new method of material characterisation for the thermoforming process.