https://www.avient.com/sites/default/files/2020-12/artisan-thermoplastics-nylon-processing-guide.pdf
Processing Guidelines
Base Resin PA6
Barrel Temperatures °F °C
Rear Zone 440–470 227–243
Center Zone 450–480 232–249
Front Zone 460–490 238–254
Nozzle 470–500 243–260
Melt Temperature 470–500 243–260
Mold Temperature 120–180 49–82
Pack and Hold Pressure 50–75% of Injection Pressure
Injection Velocity 0.5 in/s–3 in/s 13 mm/s–76 mm/s
Back Pressure 50–100 psi 3.4–6.9 Bar
Screw Speed 30–70 rpm
Cushion 0.25 in 6.35 mm
Drying Parameters 2–4 Hours @ 180°F 2–4 Hours @ 82°C
Moisture % Allowable 0.08–0.18%*
Screw Type General Purpose Screw
Screw Compression Ratio 2.0:1– 2.5:1
Screw L/D 20:1
Non-return Check Valve Free Flow Check Ring
Nozzle Type Reverse Taper
Clamp Pressure 2–3 Tons/in²
Barrel Capacity 30-80% of barrel should be used
* Avient suggests measuring moisture using a Karl Fischer method or Vapor Pro® moisture analyzer that titrates only for moisture.
Mold Design Recommendations
Gates
1.
For circular parts, full perimeter venting is recommended
4.
