The objective of the present work was to investigate the influence of selected screw
configuration of the co-rotating twin-screw extruder type BTSK-20 of very good dispersive –
distributive performance on some thermal properties [2 – 4, 10, 11]. The scheme of the segments
arrangement has been presented in fig. 1. In spite of practical application for plastics recycling, the
investigation has been conducted using primary granulates of polymers including processing
conditions for simulation of the real recycling procedure.