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Large Size Crosshead for tube coating

Extrusionstechnik Gero Wiegard as specialist in extrusion technology developed a new large sized crosshead for thermoplastic materials such as PVC, PE and many others.

The crosshead enables the coating of tubes and pipes up to 1000mm with a layer.

The newly designed and on-flow analysis based distributor guarantee a uniform melt distribution across the circumference and reduces the shear rate as well as the occurring raisins of temperature to a minimum. Designing of the distributor depends inter alia on the material to be processed and the required output rate. 

The die concept features good melt distribution of the extrudate. 

A motor-driven swivel mechanism allows the whole crosshead to rotate over a 90° angle to dismantle the distributor with an elevator system. The whole system is mounted on a movable frame which enables the removal of the unit for accruing maintenance work in particular to take out the extruder screw. 

Separately bolted crosshead adapter enables an adaption to all sorts of extruders regardless of size and manufacturer. 

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