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2 Challenges of Modern Technology

2 2011

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Polymer Single Screw Extrusion with Metered Feeding

Wilczyński K. J.

Challenges of Modern Technology

2011

Vol. 2, no. 1

51--54

The state-of-the-art is presented for composite modeling of single screw extrusion of polymeric materials. The flood mode of feeding and metered mode of feeding are considered. A new inverse approach of composite modeling for metered fed single screw extrusion is discussed. Some experimental and theoretical results of the study are presented. The polymer melting behaviour and degree of filling of the screw channel during the process, as well as the pressure and temperature development are discussed.

Closely Intermeshing Counter-Rotating Twin Screw Extrusion of Polymers

Lewandowski A.

Challenges of Modern Technology

2011

Vol. 2, no. 1

36--40

The state-of-the-art is presented for composite modeling of counter-rotating twin screw extrusion of polymeric materials. The closely intermeshing screw configuration is considered. A new approach for composite modeling of counter-rotating twin screw extrusion is discussed. This approach is based on the three dimensional nonNewtonian FEM simulation of flow in an intermeshing modular counter-rotating twin screw extruder. Some experimental and theoretical results of the study are presented. The polymer melting behaviour and degree of filling of the screw channel during the process, as well as the pressure and temperature developments are discussed.