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Frictional Heating of Extruded Polymer Melts

from SPE Plastics Research Online

Extrusion is the most efficient and commonly used method for melting plastic resins, as well as for incorporating additives, colors, and fillers into the molten polymers. Extrusion is also used to impart a shape to the polymer melt and produce continuous profiles (e.g., filaments and tubes), and is frequently coupled with other shaping processes, such as blow molding and film blowing. During the extrusion of polymer melts, distortions of the extrudates and melt-flow instabilities can arise. more


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