1. Faculty of Mechanical Engineering, Department of Polymer Processing; University of Science and Technology in Bydgoszcz; ul. Kaliskiego 7 85-796 Bydgoszcz Poland
2. Institute of Materials Technologies; Poznan University of Technologies; ul. Piotrowo 3 61-138 Poznań Poland
3. Faculty of Chemical Technology and Engineering, Department of Polymer Technology; University of Science and Technology in Bydgoszcz; ul. Seminaryjna 3 85-326 Bydgoszcz Poland