The forward movement of polymer melt in an extruder barrel is resisted by drag flow, which is caused by the resistance to flow through the die orifice:

Name: The forward movement of polymer melt in an extruder barrel is resisted by drag flow, which is caused by the resistance to flow through the die orifice:
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Question

Quizplus · Accepted Answer

drag flow is the forward motion of the melt caused by the archimedian screw principle in the barrel.the resistance to forward flow is called back pressure flow.

The Forward Movement of Polymer Melt in an Extruder Barrel