The Theysohn twin-screw extruder XTS 122 is mainly used for pellet production. The XTS 122 extruder is a flexible high-performance extruder that achieves the highest melt quality through the proven processing units in 28D, 32D or 36D.

The wide range of different dosing units, which are also available in gravimetric versions, allows flexible feeding of several different products. The pellet extrusion line is completed with the Theysohn GKX pelletising head and matching downstream equipment.

The GKX pelletising head from Theysohn has been designed for pelletising rigid and flexible PVC as well as for highly filled PVC formulations. A process-optimised feed piece to the pelletising head reduces the dwell time of the material in the flow channel. The pelletising head housing can be easily and quickly separated from the extruder via quick-release fasteners and reassembled. The knives of the pelletising head can be adjusted to the die plate via a threaded spindle.

This enables readjustment during operation. The tested AIR-Through System prevents the pellets from sticking and adhering in the pelletising head housing and ensures optimum discharge. The GKX pelletising head is integrated into the TEC 5s extruder control system and can thus be controlled from the extruder.

The pellets cut by the GKX pelletising head in the hot cut-off process are blown into a cyclone by means of a conveyor fan via an approx. 10 m long conveyor line. From there it falls via a switch into the cooling channel.

A BigBag filling station forms the end of the pelletising system. The lines between the GKX and the conveying fan and downstream cyclone can be flexibly designed.