- Extremely short, low-maintenance cross-linking station
- Streamlined flow channels in the pipe head prevent material deposits
- Line speeds up to 30 m/min
Due to their high temperature resistance and very good stress crack resistance, cross-linked polyethylene pipes have established themselves worldwide for district heating, geothermal heating systems, and for hot and cold water transport in buildings. The company Battenfeld-cincinnati demonstrated in Vienna its latest PE-Xa extrusion line to 40 customers from Europe and the Near and Middle East. With an output of up to 150 kg/h, the line reaches significantly higher output rates than conventional lines or RAM extruders.
Extremely short, low-maintenance cross-linking station
One of the main features of this extrusion line: an extremely short, low-maintenance cross-linking station. In contrast to other production and cross-linking processes, the demonstrated inline process enables the production of peroxide cross-linked pipes with high cross-linking rates at extremely low costs, according to the company.
The RK32PEX pipe die is specially laid out for PE-Xa extrusion.
Streamlined flow channels in the pipe head prevent material deposits
Beside the cross-linking unit, further main components for cross-linked PE pipe production are the twin screw extruder and the pipe head.
PE-Xa pipes offer a high degree of temperature resistance as well as optimal stress crack resistance, and are used for heating, district heating and geothermal systems, as well as for transport of hot and cold water in buildings.
With a screw geometry specially designed for this application, the counter-rotating parallel extruder model twinEX 93-28 PE-Xa ensures homogeneous melt processing at low melt temperatures. Thermal stress and flow stagnation are excluded, and a short dwell time is achieved as well. The same principles apply to the employed RK32PEX pipe head used which has been specially adapted to the task in terms of pipe head volume and streamlined flow channels, in order to prevent material deposits and cross-linking inside the die.
Line speeds up to 30 m/min
Via an elbow adapter, the pipes pass directly into the infrared oven. Eight IR heating elements installed inside the vertical oven ensure a high cross-linking rate at line speeds of up to 30 m/min.
