Extrusion Processing Guide: PVC-U – Polyvinylchloride unplasticised

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 Processing Guide: PVC-U – Polyvinylchloride unplasticised
 Extruder: Twin screw extruder with vacuum, plain feeding section
 Screw Design: Three stage PVC screw with or without mixing section(s), 25 – 30 L/D
 Compression Ratio: 3:1
 Cylinder Temperatures: 180-195°C
356-383°F
 Melt Temperature: 190-210°C
374-410°F
 Pre-Drying: no
 Calibration:  
 Miscellaneous: venting zone: material should be “cheesy”, but not fused and wrapped around screw

Note: This is meant as a general guide. Please consult your material and machinery representative.

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