This article examines how raw material reduction in PVC pipe extrusion depends on stable mass-flow control, reliable wall thickness measurement, and proper separation of control functions. It also explains why eccentricity and local wall distribution still limit deeper material saving on production lines.
During PVC pipe extrusion start-up, the pipe leaving the extrusion die is still hot and mechanically weak. A traction pipe acts as a temporary guide that connects the newly extruded pipe to the haul-off unit. This method helps the pipe move through calibration and cooling equipment until stable production conditions are reached.
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