A mathematical model of the fusion of polymeric materials in extruders. Effect of polymer physical properties and processing regimes on rate of fusion

Conclusions The effect of polymer physical properties, rate of extruder screw rotation, and preliminary heating of the polymer on its rate of fusion have been studied.It has been shown that in individual sections of the interface a freezing of previously melted polymer takes place.The rate of polymer fusion along the screw channel is not constant, and as the flake moves from the inlet pipe of the extruder to the exit pipe, it initially decreases, then rises, and then drops again.Translated from Khimicheskie Volokna, No. 6, pp. 46–48, November–December, 1984.