1. Polymer Engineering and Technology Department, Faculty of Chemistry; Wrocław University of Science and Technology; Wybrzeże Wyspiańskiego 27, Wrocław 50-370 Poland
2. Faculty of Mechanical Engineering, Chair of Foundry, Plastics and Automation; Wrocław University of Science and Technology; Wybrzeże Wyspiańskiego 27, Wrocław 50-370 Poland