Extrusion Processing Guide: PA 66 – Polyamide 66

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3 years ago


Processing Guide:	PA 66 – Polyamide 66

Extruder:	Single Screw Extruder Without vacuum, plain feeding section

Screw Design:	Barrier Screw or Polyolefin Screw with equal feed ,transition and metering section, 25-30 L/D

Compression Ratio:	3-4:1

Cylinder Temperatures:	260-290°C 500-554°F

Melt Temperature:	280-300°C 536-572°F

Pre-Drying:	3 hours at 80°C (176°F) (very important)

Calibration:

Miscellaneous:	process above 250°C (482°F) to avoid freeze-off if bubbles come then temperature too high increased output/reduced wear by preheating of material 75°C (167°F) or by heating of feeding section at 160°C (320°F)