Flexible Use of Single‐Screw Extruders through Multiple‐Process Optimization

Abstract

Using general‐purpose screws to process different types of material offers considerable cost advantages over special‐purpose screws. Designing screws of this type is generally a difficult task, since modifications to different aspects of the geometry can run counter to each other in some cases. Optimization software is thus of particular benefit here. For this reason, a program was developed for the optimization of general‐purpose screws. A central feature of this program is an appraisal system for the computer‐aided evaluation of single‐screw simulations. The performance of the software was verified on the basis of actual extrusion experiments. Temperature measuring cross for measuring thermal homogeneity.magnified imageTemperature measuring cross for measuring thermal homogeneity.

Simulation of Nonlinear Polyurethane Production in a Twin-Screw Extruder

“…[3][4][5][6][7][8][9][10] The different phenomena that determine the performance and operation of an extruder can be analyzed and better understood by using mathematical models. Potente et al [5,6,[11][12][13] and Flecke et al [14] have developed mathematical models for single and co-rotating extruders, which have been used to simulate several processes. Vergnes, Della Valle, and Delamare [15] proposed a global computational model for self-wiping co-rotating twin extruders, which have also been studied by several other research groups [16][17][18] .…”