Extrusion Processing Guide: PC – Polycarbonate

 Processing Guide: PC – Polycarbonate
 Extruder: Single screw (profile, sheet, film ) without vacuum, plain feeding section with vacuum or pressure-relieved grooved feeding section (by increased screw pitch and channel depth)
 Screw Design: Three-zone screw 25 – 30 L/D or barrier screw
 Compression Ratio: 2,25:1
 Cylinder Temperatures: 270-300°C
 Melt Temperature: 290-320°C
 Pre-Drying: 2-4 hours at 100-120° C (212-248° F)
 Miscellaneous: should not succeed 400°C
reduced wear by preheating of material at 120 C (248 F) or by heating of feeding section at 170 C (338 F)
Note: This is meant as a general guide. Please consult your material and machinery representative.

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