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17.08.2020 Extrusion technology for future-oriented biomaterial

Coperion, Stuttgart, Germany, has won an order to supply its ZSK state-of-the art twin screw extrusion system to RenCom AB of Sweden to enable the production of RENOL®, an innovative lignin-based thermoplastic biomaterial that can be used to replace fossil-based plastics. RenCom will be able to produce up to 1000t/yr of RENOL starting late 2020.

Coperion has, in cooperation with RenCom, designed a complete extrusion system comprising a ZSK co-rotating twin screw extruder, gravimetric feeders, a strand pelletising system, a lignin bag dump station and a bulk bag station. The ZSK Mv PLUS series unites an optimally balanced large free screw volume with high screw speeds and a high specific torque.

Thanks to the deeply cut screw flights thermal stress on the raw material is very low and product processing is very gentle. By using the side feeder ZS-B, fillers and additives can be added to the process section according to the requirements of the end product. The complete system will be delivered in October. High quality RENOL pellets will be produced in the scale of 1000t/yr. Comprehensive studies in Coperion’s test lab and the realisation of the demo system for the production of RENOL is seen as the beginning of a successful partnership between RenCom and Coperion.

Christopher Carrick, RenCom’s CEO, said: “We at RenCom are very happy to announce the partnership with Coperion. It is a fundamental keystone in our progress to supply our innovative material to a broad audience and to enter the market as early as beginning of 2021. Working with the best of its kind is particularly important as Coperion is the world leader in the field of extrusion and process engineering perfection. We are excited to further develop this partnership.”


Coperion’s ZSK twin-screw extrusion system

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