Used twin-screw extruders

Twin-screw extruders: what to look for

Twin-screw extruders are the workhorses of compounding: they incorporate fillers, fibres, colour and additive masterbatches and – with venting – are also suited to recycling. Co-rotating machines with parallel screws are the most common; counter-rotating and conical designs are found mainly in PVC.

When buying, look at screw diameter, L/D ratio, speed and torque as well as the number and position of vents and side feeders. Wear of the screw elements and barrel determines how the machine performs; we state it in the listing where known and are happy to show it during a trial run in our hall.