#Research & Development

2022-08-04

Prof. Thomas Gries on "The Recycling Problem of Clothes" at "Uni am Rathaus".

The discussion participants at the Katschhof in Aachen, Germany, far right Prof. Thomas Gries © 2022 ITA

On 20 July, Prof. Thomas Gries joined Sibylle Keupen, Mayor of the City of Aachen, Heiko Thomas, Councillor for Climate and Environment, Municipal Operations and Buildings of the City of Aachen, and Professor Marzia Traverso, Head of the Institute for Sustainability in Construction at RWTH Aachen University, at a panel discussion on "Textiles in the Circular Economy: Are our clothes becoming a problem?" at the Katschhof from 6 pm. (see picture, Prof. Gries is on the far right, source: ITA).

Textiles are - after food - the second most important consumer product in Germany: 20 to 25 kilogrammes are consumed per capita annually. Of this, 75 per cent is clothing, the rest is, for example, nappies, carpets or household textiles. However, the recycling rate is only one percent. How can this problem be solved? What can cities and municipalities do, what can science do? Is it possible to produce regionally produced clothing on a large scale again in Germany? Structural change also opens up opportunities for change in the textile industry.

Prof. Gries showed current projects on these topics and, among other things, how new textiles are produced at ITA from old blankets. The process addresses one of the main problems of recycling, the processing of mixed waste. With the process developed at ITA, pure acrylic fibres could be recovered from mixed waste and knitted into a cushion cover presented there.

The Citizens' Forum RWTHextern („Bürgerforum RWTH Extern“) and the City of Aachen had invited to this panel discussion. The event was moderated by Jens Tervooren from WDR.

Pellet press enables thermomechanical textile recycling on a pilot scale at ITA

Since the end of 2025, the technical centre of the Institut für Textiltechnik (ITA) of RWTH Aachen University has been equipped with a pellet press from the manufacturer Amandus Kahl GmbH & Co. KG, Reinbek, Germany. This press can efficiently compact shredded synthetic textiles at a throughput of up to 25 kg/h and process them into pellets with a diameter of 4 mm.

Solid Air Dynamics wins second place at RWTH Innovation Award

On 30 January, RWTH spin-off Solid Air Dynamics was awarded second place in the RWTH Innovation Awards for its research in the field of aerogel fibres. Manufactured from renewable raw materials, aerogel fibres offer outstanding thermal insulation, are extremely lightweight and completely biodegradable, and can consist of over 90 per cent air.

Award-winning research for sustainable carbon fibre cycles

Sustainable recycling of carbon fibres is possible through targeted electrochemical surface modification, which makes the sizing of carbon fibres resistant to solvolysis. ITA PhD student Sabina Dann was awarded the MSW Award from RWTH Aachen University for her master's thesis on this development. The award ceremony took place on 12 November 2025 in Aachen.

Pioneer of the first hour: Michael Carus steps down after more than 30 years from nova-Institute’s Management

After more than three decades at the helm, founder and CEO Michael Carus is set to step down as head of the Renewable Carbon division on 1 March 2026. Lars Börger as the new CEO, will take over this key position of the nova-Institute together with COO Linda Engel, while Carus will remain with the research and consulting company as a senior advisor and shareholder. This change takes place after a one-year transition phase, as planned.

The nova-Institute establishes new Renewable Feedstock Department to lay the groundwork for industrial defossilisation

The transition from fossil-based to renewable carbon – sourced from biomass, CO₂ utilisation and recycling – is the cornerstone of a climate-neutral chemical industry. The nova-Institute’s new department is dedicated to providing the essential data, analyses and strategic roadmaps required to secure a reliable future feedstock supply and make this transition a commercial and ecological reality.

Barmag presents the next generation of POY production – energy-efficient and partial-automated

With POY 2.0, Barmag is introducing a completely redesigned spinning concept that takes the production of partially oriented yarn (POY) to a new level in terms of technology and economy. The solution, which was presented to a selected audience of experts for the first time at ITMA Asia + CITME 2025, was met with great enthusiasm: several yarn producers worldwide immediately expressed their interest in a pilot plant.

Textile‑to‑textile recycling leader Circulose joins Spinnova’s ecosystem to accelerate technology scale‑up

Textile‑to‑textile recycling leader Circulose joins Spinnova’s ecosystem (consortium) to help advance the scale‑up of Spinnova’s technology. Spinnova has actively sought partners to accelerate commercial scale‑up, and Circulose, as a key player in textile recycling, strengthens the ecosystem by providing a raw material that is in high demand across the industry.

UNIFI® introduces Luxel™: A Linen-inspired, easy-care performance yarn

Unifi, Inc. (NYSE: UFI), the makers of REPREVE® and one of the world’s leading innovators in recycled and synthetic yarns, today announced the launch of Luxel™, a groundbreaking yarn technology that combines the luxurious look and feel of linen with high-performance, easy-care, and textile-to-textile recycled materials.