From the Sector

EDANA’s Innovation Forum 2025, held on 11–12 June in Station F, Paris, brought together a vibrant cross-section of industry leaders, researchers, startups and innovation experts to explore the dynamic evolution of the nonwovens sector. With a rich two-day agenda that combined high-level keynote addresses, thematic sessions, research showcases and networking events, the Forum served as a hub for ideation, collaboration and inspiration around the sector’s most urgent challenges and exciting opportunities. 
 
“Innovation is a key factor to stay competitive — but more than that, it’s the foundation for resilience and long-term relevance. By embedding sustainability, digitalization and collaboration into the core of our innovation culture, we’re not just keeping pace with change — we’re shaping the future of our industry.” said EDANA General Manager Murat Dogru in his opening address. 
 
Speakers explored how textile waste can become high-value products, how fibrelevel modelling replaces costly prototyping, and how AI enables more autonomous and sustainable manufacturing. “Nonwovens are robust and can tolerate stress. This gives an opportunity in the recycling textile to tackle the textile tsunami.” - Maria Ström, CEO of The Loop Factory. 
 
The Forum also welcomed nature-powered innovations set to transform the fibre landscape. “What if we made fibres from agricultural waste? Natural fibres are extraordinary, and we wouldn’t even have to use the leaves that are grown, but the ones already on the ground and that are now considered waste.” - Dr. Carmen Hijosa, Founder & Creative Director of Ananas Anam. 
 
The afternoon turned its spotlight on research institutes from across Europe, examining how their strategic priorities align with industry needs. “It is crucial that people in the nonwovens industry understand what’s going on on the other side of the fence and to understand what R&D people are doing”, said Matthew Tipper, CEO of Nonwovens Innovation & Research Institute (NIRI). “We need collaboration between the real needs of the industry and research institutes.” 
 
Towards the end of the first day, the EDANA Innovation Forum featured a workshop on capturing serendipity. “Not all progress is planned”, said Dieter Eichinger, CEO & Founder of Eichinger. “Some of the most transformative ideas are born from surprises, and we need to make space for it to imagine the imaginable”. 
 
The first day ended with a cocktail dinner aboard the Excellence, gliding through the heart of Paris on the River Seine, admiring the beauty of the City of Light and its stunning views of the Eiffel Tower. 
 
Day two began with a provocative and practical keynote on AI as a creative partner in product development. “AI doesn’t replace creativity,” said Oliver Breucker, CoCEO & AI Consultant at Roover Consulting. “It amplifies it. It clears space for us to think bigger, iterate faster, and design better — with the customer always at the centre.” 
 
Moreover, sustainable innovation is no longer confined to early-stage R&D. From fibre-based packaging to carbon-zero superabsorbents, speakers showcased products ready to hit the market, each with compelling environmental and commercial benefits. “It’s not about choosing between performance and sustainability anymore,” said Alexandros Skouras, Director of Hygiene Sector at Paptic. “The next generation of materials offers both.” 
 
The forum also invited Walter Johnsen, Venture Science Associate at Marble Studio, who offered a strategic lens on how deep-tech entrepreneurship can fast-track climate progress. In addition, four startups took the stage to showcase how they’re transforming diapers, textiles, fashion and chemical processes. “Innovation is not about making things slightly better,” said Miki Agrawal of Hiro Technologies. “It’s about asking: what if we start completely differently and solve the root problem instead of patching the old one?” 
 
To end the second day, Maxime Guillaud, CEO of INSKIP, mapped out how startups and ecosystems are evolving — and what the nonwovens industry can learn from other sectors. “Innovation doesn’t just come from technology — it comes from how we organise people and capital around ideas,” said Maxime. “That’s where ecosystems matter.” The event concluded with a guided visit to Station F, the world’s largest startup campus, reinforcing the importance of ecosystems in scaling transformative ideas. 
 
EDANA extended its heartfelt thanks to all speakers, moderators, partners and participants whose energy and insight made the Forum such a success. The connections made in Paris will continue to drive meaningful progress in the months and years ahead! 

The Hong Kong Research Institute of Textiles and Apparel (HKRITA) and Seiko Epson Corporation ("Epson") have succeeded in developing new regenerated cellulose fiber with a silk-like sheen from waste cotton fabric through a new production process.

A movement toward using fibers recycled from discarded clothing has been gaining momentum, driven by a growing recognition of waste clothing as a global environmental issue. In Europe in particular, a move is under way to use more regenerated fiber and reduce textile waste.

To address societal issues surrounding textile waste, HKRITA and Epson have been conducting research and development on regenerated fibers since signing a joint development agreement in January 2024. As a result of this collaboration, the partners have successfully developed regenerated cellulose fiber using a new production process that transforms discarded cotton fabric into regenerated fiber.

This new process was made possible by integrating Epson's proprietary Dry Fiber Technology for defibrating textiles with HKRITA's fiber-dissolving technology. The process involves (1) defibrating discarded cotton fabric into a powder-like state, (2) dissolving the cotton in a solvent, and (3) extruding it through a nozzle into a coagulation bath, where it solidifies and is spun into fiber.

The regenerated cellulose fiber produced through this process is expected to have both a smooth, silky sheen and the strength of cotton. This fiber is expected to be used in high-end materials such as scarves, neckties, and suit linings. Moreover, since the short fibers that occur during the regenerated fiber production process can also be used rather than discarded, as was usually the case, this regeneration process can help to increase the total clothing recycling rate.

"As an applied research center, HKRITA is dedicated to solving real-world problems and enhancing current practices and products," said HKRITA CEO Jake Koh. "We are thrilled to collaborate with Epson to recycle fibers and repurpose them into high-quality yarns. This cross-industrial collaboration is not only reimagining materials but also redefining the future of sustainable production."

Epson Executive Officer Satoshi Hosono, who serves as the deputy general administrative manager of the Global Environmental Strategy Promotion Office and as the deputy general administrative manager of the Technology Development Division, said, "We are extremely pleased with the results that this joint development project has yielded. The selective application of this new wet process and our previously developed dry process should enable fiber to be regenerated from all waste cotton fabrics while reducing environmental impact."

Information about the work under this joint development project will be exhibited at HKRITA's Booth 2415 at Textiles Recycling Expo 2025, held in Brussels, Belgium, from June 4, 2025.

Looking ahead, HKRITA and Epson will continue to combine their advanced technologies to accelerate the adoption of regenerated fibers, contributing to global efforts to solve the challenge of clothing recycling.

Introducing PET fibers and filament yarns made solely from discard textile waste, lower carbon bio-fibers, and more, Indorama Ventures expands dejaTM portfolio to boost textile industry sustainability:
The company expands its fiber and filament yarn portfolio called dejaTM to boost sustainability. The goal is to actively drive circularity and decarbonization efforts in the global textile industry and to prepare for supporting the upcoming European Ecodesign for Sustainable Products Regulation (ESPR).

Three key offerings add to the company’s deja portfolio, addressing customers’ main sustainability challenges:

1. On-demand solutions for textile circularity, providing deja PET fibers and filament yarns made solely from enhanced recycled textile waste that was being discarded. Products available on customers’ request are high-tenacity yarns and cords for technical applications like airbags and seat belts, as well as fibers and filament yarns for lifestyle applications, such as apparel and home textiles. Customers interested to drive circularity and reduce greenhouse gas emissions, while keeping performance equal to standard solutions, are encouraged to request more information at enquiry.fibers@indorama.net.
2. deja Bio: Solutions to help customers reduce their carbon footprint. Thanks to its fully integrated, in-house PET supply chain, Indorama Ventures can deliver high-performing deja PET yarns out of Europe and Asia that have a substantially reduced carbon footprint. All of them comply with the accounting methodology of the ‘Together for Sustainability’ industry initiative.

Indorama Ventures takes a mass balance approach to increase the use of renewable sources, benefitting from eleven ISCC+ (International Sustainability and Carbon Certification) certified sites across its entire business, including PTA, PET chips, fibers, and technical fabrics. The mass balance approach is a chain-of-custody method that allows manufacturers to mix sustainable and conventional inputs like renewable and fossil-based materials in a shared production system, while still allocating the environmental benefits of the sustainable inputs to a portion of the output.

High-tenacity yarns and tire cord fabrics available in the bio-based deja portfolio allow for a progressive bio-content introduction into customers’ products. Customers can benefit from avoiding or simplifying qualification procedures and receive the same performance as from fossil solutions. Further, these products can be given new life through mechanical or enhanced recycling.

1. deja Enhanced: Products that give hard-to-recycle packaging and textile waste new life. In close collaboration with like-minded partners along the value chain, Indorama Ventures is also looking at ways to convert hard-to-recycle packaging into fibers and yarns through enhanced recycling. These solutions are readily available at similar level of performance as fossil solutions. In future, these products will also be supplied with flexible proportions of reprocessed textile feedstock to accommodate customers’ circular targets.
2. Customers and brand owners are invited to take a closer look at what the expanded deja™ fibers & yarns portfolio offers during Textiles Recycling Expo on June 4-5 in Brussels, booth no. 1825. As one of the leading events dedicated to textile recycling and circularity, this expo brings together industry leaders, innovators, and decision-makers to shape the future of sustainable textiles.
3. Claire Mattelet, Global Sustainability Program Head for Indorama Ventures’ Fibers Business, says: With the expanded deja portfolio, we are turning ambition into action – empowering our customers to meet their circularity and decarbonization goals through innovative, high-performance PET fibers and yarns made from textile waste, bio-based inputs, and hard-to-recycle materials. This is how we shape the future of sustainable textiles without compromising on quality or performance.”
4. With most of the textile waste globally being incinerated or landfilled, the global fashion industry accounts for an estimated 3 to 8 percent of total greenhouse gas (GHG) emissions. According to recent reports1,2, the industry’s emissions are expected to increase by about 30 percent by 2030 if no further action is taken1. In response, Indorama Ventures has set a 2030 target of 40% of recycled and bio-based feedstock of its current commodity feedstock. Taking a leading role and collaborating along the entire value chain to drive sustainable practices in the man-made fibers industry is at the core of Indorama Ventures’ commitment to shaping the future of textiles.

Under the theme “Ensuring a Transformed World Prosperity – Action for Planet with Innovation and Collaboration,” APIC 2025 promoted the petrochemical industry’s role in driving growth and building a sustainable future amid fundamental structural shifts in the sector, which aligns with Indorama Ventures’ brand promise to deliver indispensable chemistry through sustainable solutions.
Indorama Ventures joined some 1,500 delegates from across the globe to discuss sustainability, innovation, and industry cooperation. Ahead of the event, the company’s Combined PET segment, the world’s largest producer and recycler of PET bottles, hosted a reception for about 200 customers, suppliers and partners, including a traditional Thai puppet performance and an interactive VR experience of Indorama Ventures’ 360 Gallery.

Indorama Ventures Public Company Limited, a global sustainable chemical producer, reinforced its leadership in shaping the future of the petrochemical industry at the Asia Petrochemical Industry Conference (APIC) 2025, held this year in Bangkok.

Mr. Aloke Lohia, Group CEO of Indorama Ventures, emphasized that collaboration across the value chain is critical to building long-term resilience and relevance in a shifting global landscape:
“Our global diversity gives us the agility to meet change with confidence and to remain dependable no matter the environment. It is this quiet strength that makes us a partner you can rely on, for today and for what lies ahead. The future of our industry won’t be written in isolation. It will be shaped, once again, through collaboration. Through shared purpose. Through indispensable chemistry.”

Driving Sustainability Through Innovation
At a APIC 2025 panel discussion titled “Reimagining Petrochemicals”, Dr. Anthony Watanabe, Chief Sustainability Officer, explored how the industry must move beyond incremental change by adopting systemic innovation, improving sourcing transparency, and accelerating climate-positive technologies.
Complementing this vision, Dr. Tinnabhop Santadkha, Sustainability Innovation Specialist, delivered a keynote on “Indorama Ventures’ Alternative Feedstocks.” He outlined how the company is investing in bio-based materials, chemical recycling, and alternative feedstocks to reduce emissions and enable a circular economy at scale.

Scaling Impact at the Grassroots Level
In a session focused on circular economy ecosystems, Ms. Naweensuda Krabuanrat, Head of Global CSR, Global Recycling Education and Thai Advocacy, spotlighted the company’s work in building community-based PET collection systems and driving education through public-private collaboration. Her presentation underscored a key takeaway: that systems-level change requires both infrastructure and behavior change. The company’s recycling infrastructure and public-private partnerships are contributing to a more sustainable value.

Polyethylene and polypropylene account for two-thirds of the world’s plastics. But the polymers’ popularity has an equally large downside. Because they have similar densities and physical properties, the polymers are difficult – and expensive – to separate when mechanically recycled together. What results is a weak, degraded material that really isn’t good for anything.

Now, Cornell researchers have developed an inexpensive and potentially scalable approach that uses a commercially available peroxide to bind the polymers together, thereby creating a more useful, high-quality plastic recycling additive.

The findings were published May 19 in the Journal of the American Chemical Society. The co-lead authors were postdoctoral researcher Moritz Kränzlein and doctoral student Shilin Cui. The project was led by Geoffrey Coates, the Tisch University Professor of Chemistry and Chemical Biology in the College of Arts and Sciences, the paper’s senior author.

In a way, the project is itself a recycled product. In 2017, Coates’ lab worked with collaborators from the University of Minnesota to create a multiblock polymer that could combine polyethylene and polypropylene mixtures. The new material was an important scientific achievement, according to Coates, but it proved difficult to scale up. It was also too expensive to be practical.

“We had to go back to the drawing board and think of the Venn diagram of what material would work and what synthetic methods would be affordable,” he said. “Why didn’t we just do that in 2017? Trust me, if it was easy, somebody else would have done this long ago.”

The key to developing their new polyolefin compatibilizer was to look for  existing polymers that, with the right processing, could do the job, rather than creating a new one from scratch. Kränzlein began by experimenting with the materials that were already in the lab, always with a few parameters in mind.

“Every second meeting, when I was giving Geoff an update, his first question was, ‘What’s the cost?’ There was always this line of price per pound that I shouldn’t cross,” Kränzlein said. “We tried to really keep that as a focus of this project. Instead of finding a very elegant or sophisticated solution, we tried to find a real-world solution that works.”

A year and a half – and more than 200 experiments – later, the researchers settled on an organic alkyl peroxide that, when heated, essentially plucks hydrogen molecules off high-density polyethylene (HDPE) and isotactic polypropylene (iPP) so they can be grafted together and form a copolymer material that can be added to a mechanical recycling process for HDPE and iPP mixtures, restoring their properties.

The copolymer can basically be thought of as “plastic soap,” Kränzlein said.

“When we have mixtures of commodity plastics like HDPE and iPP, those don’t mix very well, and those phases separate from each other, which makes the material properties of those mixtures pretty bad,” Kränzlein said. “This process adds in a third component that acts like a soap between those two phases, and that soap facilitates a better miscibility between the polymers, and that restores the physical properties of those mixtures, essentially.

“It took us a very, very long time playing around with all the different tuning points,” he said, “until we finally achieved something that that we were happy with.”

To better understand their compatibilizer’s properties and the grafting reaction, the researchers turned to Brett Fors, the Frank and Robert Laughlin Professor of Physical Chemistry (A&S), and doctoral student Jenny Hu, who conducted rheological characterization studies on it.

“So we’ve got the material,” Coates said. “The question is, now can you make larger amounts? We’re doing grams-at-a-time scale. Ultimately, you’d want to be doing dozens of kilograms. We’re confident it’ll scale, but there’s going to be a lot of work to get it there.”

Coates is hopeful that the compatibilizer could also lead to the creation of new polymer alloys that leverage the respective strengths of different waste plastics. There would be no need for giant million-dollar plants: Just take some preexisting polymers and add the compatibilizer.

“You could make a whole kind of pallet of alloys that might have better properties than either one of the pure polymers alone, just like stainless steel,” said Coates, who recently launched a startup that specializes in the compatibilizer technology through Cornell’s Praxis Center for Venture Development. “The dream is, if you can make a really rigid polymer that’s also really tough, then you can make packaging that uses less material, yet has the same sort of properties. That’s one of the other big applications for this technology.”

Co-authors include Fors, Hu and research associate Anne LaPointe.

The research was supported the Gerstner Family Foundation, with additional funding from the U.S. Department of Energy through Ames National Laboratory’s Institute for Cooperative Upcycling of Plastics, an Energy Frontier Research Center.

Every year, millions of tons of PET and polyester waste end up in landfills or are incinerated, yet sustainable recycling solutions remain limited. DePoly - a leading sustainable PET-to-raw-material recycling company – announced the upcoming launch of a 500-tonne-per-year showcase plant in Monthey, Switzerland this summer, representing a critical step in the company's journey from laboratory breakthrough to industrial-scale implementation.

The facility will demonstrate DePoly's proprietary process that converts PET and polyester waste into virgin-quality raw materials without fossil fuels. Imagine a world where discarded items – from polyester shirts to water bottles – are not wasted anymore but resources transformed back into the building blocks for new products. After all, revolutionizing an industry isn't just about creating new technology – it's about proving it works at scale.

DePoly’s technology has already demonstrated its commercial impact through collaborations with some of the world’s leading companies—not only in fashion, like Odlo, but also in cosmetics and the broader consumer goods industry, including innovators such as PTI. Through these partnerships, DePoly has validated the quality of its recycled monomers by transforming PET waste into new bottles, high-performance textile fibers, and cosmetic packaging. This proves that DePoly’s recycled materials can meet, and even exceed, the highest standards of purity and performance across a wide range of industries.

By delivering oil-equivalent monomers, DePoly’s technology sets a new benchmark for circularity, offering a genuine alternative to virgin materials.

DePoly is ramping up with world-class innovators, bold thinkers and cutting-edge know-how—taking their pilot victory to industrial scale demands nothing less than unstoppable ambition. The company is planning to build a commercial plant in 2027 that will process significantly larger volumes of PET and polyester waste – a major leap in redefining recycling and advancing the circular economy, as DePoly strives to become the global leader in sustainable, circular plastics.

To further accelerate this expansion, DePoly has secured a total of $23 million in seed funding with MassMutual Ventures joining a second closing of its round. The expanded investor base positions DePoly as one of the biggest recycling technology companies in Europe, with more than $30 million raised across two rounds and grants. MassMutual Ventures joins existing investors, including Founderful, ACE & Company, Angel Invest, Zürcher Kantonalbank, BASF Venture Capital, Beiersdorf Venture Capital, and Syensqo.

RE&UP announced a new partnership with Marchi & Fildi to co-develop a new generation of premium recycled cotton yarns. The collaboration – currently at pre-industrial stage – combines RE&UP’s cutting-edge textile-to-textile recycling technology with Marchi & Fildi’s deep expertise in sustainable yarn development and manufacturing.

With the goal of reaching all levels of the textile value chain, the project represents a key milestone in the evolution of circular innovation. The recycled cotton fibers used in the initiative come from RE&UP’s fully integrated process, which transforms post-consumer waste into high-quality raw materials ready for industrial application.

RE&UP and Marchi & Fildi bring together a powerful blend of innovation and excellence. This collaboration is driven by a shared belief: that circularity must go hand in hand with uncompromising quality. By combining RE&UP’s breakthrough recycling technology with Marchi & Fildi’s expertise in premium yarn development, the two companies are laying the groundwork for scalable, high-performance solutions that can elevate the entire textile value chain.

FILTREX™ 2025, EDANA’s flagship event for the filtration industry, wrapped up last week after two dynamic days of discussions, technical advancements, and industry collaboration. This 10th edition brought together more than 100 professionals to explore the latest developments in air and liquid filtration, sustainability, and regulatory challenges.

Industry Insights and Key Conversations
The FILTREX 2025 conference brought together experts from across the filtration industry to discuss innovation, sustainability, and regulatory challenges shaping the sector. The event opened with a keynote by Dr.-Ing. Frank Möbius, Senior Innovation Advisor at UnternehmerTUM and former BMW Group Manager, highlighting the role of Open Innovation in maintaining competitiveness in an evolving market.

Throughout the sessions, industry leaders addressed major trends influencing filtration. Dr. Marc Schmidt (AAF-Lufttechnik) explored how economic and social shifts are reshaping filtration markets, while Anthony Lawson (Hengst Filtration) examined the impact of evolving air quality guidelines and PFAS restrictions on filter design. Experts such as Cédric Vallet (Ahlstrom) and Christof Keppler (Gessner) presented innovations in filtration efficiency, carbon footprint reduction, and the development of biodegradable filter media. Meanwhile, Dr. Pero Mićić (FutureManagementGroup AG) offered a strategic framework for future-proofing businesses against industry disruptions.

Spotlight on Sustainability in Filtration
Sustainability took centre stage at FILTREX 2025, with a dedicated round table that saw insights from Oswaldo Anaya (Freudenberg Performance Materials), Cédric Vallet (Ahlstrom), and Bruce Lorange (Hollingsworth & Vose). The discussions focused on how the industry can reduce its environmental impact while still delivering high-performance solutions. Oswaldo Anaya, Product Marketing Manager at Freudenberg Performance Materials, reflected on the event, saying, “I was glad to join this last edition of FILTREX. It confirmed the great things I’d heard from colleagues about previous events. Highly relevant and timely topics for the filtration industry, plus valuable networking in a relaxed setting.”

FILTREX™ Innovation Award 2025
A major highlight of the event was the FILTREX™ Innovation Award, which this year went to Johns Manville for its Evalith® product. Their groundbreaking recycling process transforms HVAC glass microfiber waste into compounded pellets for injection molding, turning waste into durable, second-life products. The award was presented during a Networking Evening Cocktail at Vienna’s Kunsthistorisches Museum, providing an ideal atmosphere for further discussions and potential collaborations.

PFAS-Free Filtration and Industry Innovation
The closing session tackled the critical topic of PFAS-free filtration, revealing solutions like high-performance PFAS-free HEPA media and nanofiber membranes that not only enhance performance but also reduce environmental impact. Industry leaders also discussed upcoming changes in PFAS regulations and the continued push for safer alternatives in the filtration industry.

Looking Ahead
FILTREX™ 2025 firmly established itself as the key event for the filtration industry, providing a platform for knowledge exchange, collaboration, and innovation. As Bruce Lorange, Global Marketing Communications Director at Hollingsworth & Vose, put it: “The recent FILTREX event in Vienna presented a unique opportunity to network, learn, see old friends, and make new ones in the filtration and nonwovens space. The quality of presentations was top-notch—informative and thought-provoking—and the venue provided the perfect backdrop for the thought leaders gathered to take our industry to the next level. A sincere thanks to the EDANA FILTREX team for arranging such an impactful event!”

Die Windenergie ist essenzieller Bestandteil der Energiewende und damit Hoffnungsträger für Deutschlands Nachhaltigkeitsstrategie bis zum Jahr 2045. Doch rund ein Drittel der Windkrafträder in Deutschland haben ihre vorgesehene Nutzungsdauer bereits überschritten und stehen laut Fachagentur Wind und Energie kurz vor ihrem Abbau. Wir haben mit unserem Recycling-Experten für Verbundmaterialien – Fabian Rechsteiner – gesprochen, was mit den ausrangierten Anlagen passiert. Dabei gibt der Experte auch spannende Einblicke in die technischen und politischen Herausforderungen, die auf dem Weg zu einer Kreislaufwirtschaft im Bereich Windenergie noch zu überwinden sind.

Warum werden in Deutschland viele Windenergieanlagen über ihre technische Lebensdauer von 20 bis 25 Jahren betrieben?
Wir als Endverbraucher kaufen den Strom immer zu dem Preis der teuersten Stromerzeugungstechnologie (Merit-Order) ein. Aktuell ist das Gas, das mit rund 11 Cent pro Kilowattstunde zu Buche schlägt. Windenergie kann hingegen unter optimalen Bedingungen sehr günstig produziert werden. Der Preis pro Kilowattstunde liegt derzeit bei rund 4 Cent. Darum ist es für Betreiber meist rentabler, ihre Anlagen 30 Jahre und länger zu betreiben. Sie sparen sich damit aufwendige Genehmigungs- und Planungsverfahren für den Bau neuer Anlagen. Das dauert in Deutschland leider oft zwischen sechs und acht Jahre. Auch die Logistik und der Transport neuer Anlagen sind komplex. Die Bauteile sind so groß, dass ihr Transport auf den Straßen und unter Brücken Millimeterarbeit ist. Nicht selten müssen dafür Bäume gefällt werden. Das stellt Betreiber vor eine Vielzahl von Herausforderungen und hohe Kosten. Die Alternative heißt dann oft Repowering. Dabei werden alte Anlagen mit Neueren ausgetauscht. Da der Standort bleibt, ist die Genehmigung dafür auch deutlich schneller zu bekommen.

Und was passiert mit den Anlagen, die nicht mehr weiterbetrieben werden können?
Die Anlagen werden abgebaut und recycelt. Der Turm aus Stahl wird wiederverwertet und das Fundament aus Zement wird zum Beispiel im Straßenbau genutzt. Das umfasst fast 90 Prozent der Anlage. Die größte Herausforderung stellt jedoch das Rotorblatt dar. Das besteht meist aus einem bunten Materialstrauß wie faserverstärkten Kunststoffen, Holz, Schaum, Metallen und vielem mehr. Leider machen sich Hersteller noch nicht allzu viele Gedanken darüber, was am Ende mit dem Material passiert. Auch politisch ist recyclinggerechtes Konstruieren noch nicht so stark eingefordert, wie es meiner Einschätzung nach sein sollte. Das macht das Recycling auch so schwer. Abhilfe könnte ein digitaler Produktpass schaffen. Durch ihn lassen sich die Materialien, die in Rotorblättern verbaut sind, besser nachzuvollziehen. Viele Windräder sind rund 30 Jahre alt und niemand weiß mehr genau, welche Materialien damals verwendet wurden. Aktuell gibt es noch keine standardisierte Dokumentation oder ein System, das diese Informationen langfristig speichert. Wenn man die Rotorblätter recyceln will, ist es aber wichtig zu wissen, welche Materialien verwendet wurden. Das wäre ein wichtiger Schritt, um das Recycling zu optimieren. Da das bislang noch nicht der Fall ist, arbeiten wir am Fraunhofer IGCV daran, Recyclingprozesse zu entwickeln, die diese Materialien besser verwertbar machen.

Wie sehen diese Recyclingprozesse konkret aus?
Wir verwenden einen Pyrolyse-Prozess, bei dem der zerkleinerte, faserverstärkte Kunststoff unter Ausschluss von Sauerstoff erhitzt wird. Das passiert unter Stickstoffatmosphäre, damit der Kunststoff nicht verbrennt, sondern sich thermisch zersetzt. Das Ziel des Prozesses ist es, die Fasern– meist Carbon- oder Glasfasern – vom Kunststoff zu trennen. Im Anschluss versuchen wir aus der Faser wieder ein Textil zu gewinnen. Die Fasern verarbeiten wir dann nicht mehr in ihrer ursprünglichen, endlosen Form, sondern als kürzere Varianten zu einem Vlies. Eine Herausforderung liegt für uns darin, die Fasern so gerichtet wie möglich in diesem Vlies anzuordnen. Denn je zielgerichteter und gleichmäßiger die Faser, desto besser sind die Eigenschaften des Vlieses in die gerichtete Richtung und desto ähnlicher sind sie neuen Materialien, was wiederum ihren Einsatz vereinfacht. Um das zu erreichen, entwickeln wir bei uns einerseits die Recyclingprozesse und andererseits die Anwendungsprozesse und Fertigungsprozesse aus den recycelten Fasern. Wir charakterisieren und analysieren die Eigenschaften der Recyclingmaterialien und vergleichen sie mit neuen Materialien.

Was unterscheidet denn das recycelte von neuem Material?
Die recycelte Carbonfaser hat größtenteils vergleichbare Eigenschaften. Das würde ihren Einsatz zum Beispiel sehr interessant für die Automobil- oder Sportindustrie machen. Ausnahme bilden Anwendungen mit sehr hohen Anforderungen an die Struktur. In einem neuen Rotorblatt oder in der tragenden Struktur eines Flugzeuges wird man das recycelte Material daher nicht finden. Aber das ist ja auch gar nicht der Anspruch.

Wie steht es um die Forschung zum Recycling von Rotorblättern?
Die Prozesse sind schon weit entwickelt, sodass wir jetzt in die industrielle Umsetzung gehen könnten. Es gibt bereits Unternehmen, die sich in Deutschland mit Rotorblatt-Recycling beschäftigen. Das größte Problem ist jedoch, dass es noch keine ausreichende Nachfrage nach recycelten Materialien gibt. Viele Unternehmen scheuen Investitionen, weil der Markt noch unklar und unsicher ist. Politische Maßnahmen wie eine Recyclingquote wären hier sehr hilfreich, um die Nachfrage nach recyceltem Material zu steigern und die Wirtschaftlichkeit zu verbessern.

Fabian, zum Abschluss – gäbe es einen Wiederverwendungszweck für recycelte Windkraftanlagen, über den du dich ganz persönlich freuen würdest?
Da ich ein begeisterter Radfahrer bin, fände ich es natürlich großartig, wenn das recycelte Material in meinem Fahrrad landen würde. So würde sich nicht nur wirtschaftlich, sondern auch für mich ganz persönlich der Kreislauf schließen.

The Cellulose Fibres Conference 2025 (CFC 2025), held on 12-13 March in Cologne, Germany, brought together industry leaders, innovators and researchers to explore the latest innovations and new technologies for fibres – in textiles, hygiene products and packaging. The conference has established itself as the leading international platform for the emerging cellulose fibre industry. Two days with high quality program and outstanding speakers highlighted the growing importance of addressing environmental concerns within the textile industry.

The main source for the production of staple fibres or filaments such as viscose, lyocell, modal or other types of new cellulose fibres is wood-based chemical pulp. At the same time, new sources such as agricultural wastes and fibres, paper grade pulp and recycled textiles are emerging on a global scale, with a variety of new sources and companies contributing new technologies, processing methods and ideas.

Biosynthetics, featured for the first time at the conference, drew significant attention. Experts discussed the challenges and opportunities of cellulose fibres and biosynthetics, with particular focus on scalability, biodegradability, and performance comparisons to conventional synthetic fibres from fossil origin.

Dynamic Engagement and Scientific Discourse
The CFC 2025 fostered discussions among attendees, with a strong emphasis on scientific advancements and sustainable practices. Participants actively engaged in sessions covering topics such as circular economy strategies fibre-to-fibre recycling from textile, marine biodegradability versus fibre microplastic formation, alternative feedstocks, and innovative technologies for pulp, fibres, biosynthetics, and yarns.

In order to support the development, innovation and market entry of cellulosic fibres, Dieter Eichinger, CIRFS (BE), presented a proposal for a new standard that includes all types of cellulosic fibres such as Viscose, Lyocell, Tencel, Modal, Cupra and new innovative fibres under the generic term "cellulose fibres". The proposal was widely supported by the participants. Anna Palmberg, IKEA (SE), also expressed a concrete interest in using more cellulose fibres in the future.

The event witnessed heightened activity on social media platforms, with delegates sharing insights, experiences, and key takeaways using the hashtag #CFC2025. This digital engagement extended the conference's reach, allowing a broader audience to participate in the discourse on sustainable textiles.

Innovation Award winner announced
The announcement of the "Cellulose Fibre Innovation of the Year 2025" award winners was undoubtedly one of the highlights of the conference. Sponsored by GIG Karasek, the award recognises groundbreaking developments in the field. Every year, the award recognises the three most promising innovations in the field of cellulose fibres, highlighting groundbreaking advancements and their potential impact. This year, for the first time, the award also offered the opportunity to recognise innovations in the field of biosynthetics. The top three outstanding technologies were honoured this year for their remarkable advancements. These three pioneers will certainly pave ways in the future of the sustainable fibres industry:

1. .SA-Dynamics (Germany): Cellulose Aerogel Textiles
   SA-Dynamics introduced revolutionary insulation materials made from 100% biodegradable cellulose aerogel fibres. These materials combine the flexibility of traditional fabrics with the superior thermal insulation properties of aerogels, offering a sustainable alternative to fossil-based and animal-derived insulation materials in textiles as well as in construction.  
2. Releaf Paper France (France): Releaf Fiber
   Releaf Paper France transforms urban fallen leaves into sustainable cellulose fibres, providing an eco-friendly alternative to traditional hardwood pulp. Their proprietary low-temperature extraction process yields high-quality fibres ideal for packaging materials, aligning with circular economy principles by repurposing urban leaf waste.
3. Uluu (Australia): Seaweed-Derived Biosynthetic Materials
   Uluu is set to replace plastics in textiles with natural PHA polymers, derived from farmed seaweed. In partnership with Deakin University, Uluu is developing textile fibres that perform like synthetic polyester but are biodegradable in various environments, eliminating persistent microplastic pollution in fashion.