Feeding an Extruder of a Modified Feed Zone Design with Poly(vinyl chloride) Pellets of Variable Geometric Properties

2014 ◽  
Vol 29 (3) ◽  
pp. 412-418 ◽  
Author(s):  
J. W. Sikora
Keyword(s):  
Vinyl Chloride ◽  
Geometric Properties ◽  
Poly Vinyl Chloride ◽  
Feed Zone

The extrusion of plasticized poly(vinyl chloride) in an extruder with a modified feed zone. Part 1: extrusion process

2015 ◽  
Vol 35 (2) ◽  
pp. 191-198 ◽  
Author(s):  
Janusz W. Sikora ◽  
Bronisław Samujło ◽  
Andrzej Stasiek
Keyword(s):  
Vinyl Chloride ◽  
Experimental Studies ◽  
Extrusion Process ◽  
Screw Extruder ◽  
Pocket Depth ◽  
Single Screw Extruder ◽  
Poly Vinyl Chloride ◽  
Feed Zone ◽  
Process Energy ◽  
Opening Width

Abstract The work presents the results of experimental studies of plasticized poly(vinyl chloride) (PVC) extruded by a single-screw extruder with a modified feed section. The variable factors were the feed opening width, the feed pocket depth in the extruder barrel, and the rotational speed of the screw. The following parameters were studied: extrudate temperature Tw (°C), screw torque M (Nm), polymer mass flow rate G (kg/h), unit consumption of energy supplied to the extruder Ejc (J/g), and extrusion process energy efficiency κ (%). It was found that the increase in the depth of the pocket and the decrease in the width of the feed opening influence the extrusion process in a positive way.

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