EXTRUDER SCREW FUNCTIONAL CHARACTERISTIC CHANGING IN POLYMERIC MATERIALS REPROCESSING
NICOLETA TEODORESCU(1), MARIANA-FLORENTINA ŞTEFĂNESCU(1), IULIANA-MARLENAPRODEA(1), RADU DUMITRESCU(1)
1. University Politehnica of Bucharest, Faculty of Mechanical Engineering and Mechatronics, Process Equipment Department, Splaiul Independentei, no. 313, Bucharest, 060042, Romania
Abstract
Polymeric materials reprocessing leads to modification of polymeric materials flow properties. In this paper there are summarized the correlations (obtained from previous experimental research), for several types of virgin and reprocessed polymeric materials, comparatively presented. Models and simulations were performed for the extruding polymeric materials reprocessing, the screw functional feature – with and without considering the leaks over the screw helix flight tip – to assess changes in the performances.