KraussMaffei Devulcanising

ZE co-rotating twin screw extruder for use in devulc process

The offer for recycling was a ZE co-rotating twin screw extruder used in a process developed by Russian company Rubberint. Ltd.

German engineering firm KraussMaffei present  at Tire Tech 2019 at Hannover

Gerard Nijman explained how, using a feedstock of 500 micron powder the co-rotating twin screw extruder blends the rubber under different screw rates and with the use of an additive devulcanises the rubber. It is claimed that the process breaks the sulphur links and retains long chain polymers, so better maintaining the characteristics of the original rubber.

About the author

Ewan has been editor of Retreading Business since 2006 and of Tyre & Rubber Recycling since the magazine was founded. During this period he has become an expert on the global tyre recycling sector. He has many years' experience as an automotive journalist including a period at Tyres & Accessories.



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