The weld seam compensation system (WSC) can be used to increase the amount of coating material on top of the longitudinal weld seam during application of the PE/PP-layer in a side extrusion pipe coating process. The system operates fully automated and can be integrated in new as well in existing (non-Selmers) extruders.
Overall top layer coating thickness (PE or PP) consumption can be reduced
System can be integrated in a wide range of existing extruders
Highly automated injection system operated by a PLC and weld seam detection sensors
Adjustable settings to cope with a flexible diameter range & capacity
Contactless weld seam detection
Quick ROI due to reduction on coating materials
Double injection possibility
How it Works
With the WSC-system installed between flathead die and PE-screen, the system is been able to diminish the total amount of extruded material, as only an extra amount on the weld is being applied, rather than on the whole pipe. For small diameter pipes, two cylinders can be used alternately to create more filling time.
The Full Scope:
Weld seam detection system
Stand-alone PLC with HMI-operator screen