Unicor introduces innovative multilayer extrusion tools for electrical conduit

Germany-headquartered Unicor is known around the world for its advanced corrugation technology and components. It is also leading expert in die heads for extruding corrugated pipes. Alongside of its existing die heads, such as those for the production of wastewater and drainage pipes with diameters up to 1800 mm, the company is now releasing two new die head systems for multilayer manufacturing.

The SWP 58-2L is a modularly constructed die head that was specially designed for the manufacture of electrical conduit. Both single-layer and double-layer conduits can therefore be produced with PE/PP/PA and PVC/ABS materials.

The TWP series was specifically developed for the production of double wall corrugated pipes – particularly for underground use. The corrugated outer layer is made from two strata. This allows the pipe manufacturer to use recycled granulates while maintaining the colour classification of the pipe types. To accomplish this, a new distribution system was developed. It provides a perfectly symmetric pre-distribution which in turn provides the thinnest cover layers and optimal colour coverage.