EXTRUDER SCREW FUNCTIONAL CHARACTERISTIC CHANGING IN POLYMERIC MATERIALS REPROCESSING

  • NICOLETA TEODORESCU
    University Politehnica of Bucharest, Faculty of Mechanical Engineering and Mechatronics, Process Equipment Department, Splaiul Independentei, no. 313, Bucharest, 060042, Romania
  • MARIANA-FLORENTINA ŞTEFĂNESCU
    University Politehnica of Bucharest, Faculty of Mechanical Engineering and Mechatronics, Process Equipment Department, Splaiul Independentei, no. 313, Bucharest, 060042, Romania
  • IULIANA-MARLENAPRODEA
    University Politehnica of Bucharest, Faculty of Mechanical Engineering and Mechatronics, Process Equipment Department, Splaiul Independentei, no. 313, Bucharest, 060042, Romania
  • RADU DUMITRESCU
    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.

Cuvinte cheie

polymeric materials recycling flow properties extruder screw functional extruding performances changes