1. a Fraunhofer Institute for Process Engineering and Packaging (IVV) , Giggenhauser Str. 35, D-85354, Freising , Germany
2. b Technische Universitaet Muenchen (TUM), Chair of Food Packaging Technology (LVT) , Weihenstephaner Steig 22, D-85350, Freising-Weihenstephan , Germany