Conical and cylindrical double-screw extruders

Extruders with counter-rotating conical screws, designed primarily for processing PVC in dry powder form (dry blend). Extruders equipped with a plasticizing system with precise thermostats, a raw material dispenser, and an extruded material degassing system.

Cylindrical extruders are made with concurrent and counter-rotating screws. They are designed for extrusion of granulates and regranulates, profiles, and pipes, as well as for extrusion of gas-foamed plastics.

Conical and cylindrical double-screw extruders

Technical data (range):

Screw design Screw diameter (mm) Relative length L/D Speed (rpm) Main motor power (kW) Purpose Output (kg/h)
monolithic 2 x (60 – 90) 25 – 40 25 – 70 30 – 110 gas foaming PS, PE Depending on the process and the material
segmented 2 x (50 – 100) 32 – 48 300 – 900 110 – 320 compounding Depending on the process and the material
Plasticizing systemScrew diameter (mm)Relative length L/DScrew speed (rpm)Main motor power (kW)Standard thermoregulationOutput (kg/h)
conical2x (90/45 – 170/90)-28 – 4022 – 125Electrical heating air cooling, internal screw thermoregulation.40 – 8001)
cylindrical2 x (60 – 140)18 – 26 (32)20 – 4022 – 125Electrical heating air cooling, internal screw thermoregulation.50 – 12001)

1) depending on the screw diameter and type of material



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