From the Sector

The DITF is leading the joint project "DACCUS-Pre*". The basic idea of the project is to develop a new building material that stores carbon in the long term and removes more CO₂ from the atmosphere than is emitted during its production.       

In collaboration with the company TechnoCarbon Technologies, the project is now well advanced - a first demonstrator in the form of a house wall element has been realized. It consists of three materials: Natural stone, carbon fibers and biochar. Each component contributes in a different way to the negative CO₂ balance of the material:

Two slabs of natural stone form the exposed walls of the wall element. The mechanical processing of the material, i.e. sawing in stone cutting machines, produces significant quantities of stone dust. This is very reactive due to its large specific surface area. Silicate weathering of the rock dust permanently binds a large amount of CO₂ from the atmosphere.

Carbon fibers in the form of technical fabrics reinforce the side walls of the wall elements. They absorb tensile forces and are intended to stabilize the building material in the same way as reinforcing steel in concrete. The carbon fibers used are bio-based, produced from biomass. Lignin-based carbon fibers, which have long been technically optimized at DITF Denkendorf, are particularly suitable for this application: They are inexpensive due to low raw material costs and have a high carbon yield. In addition, unlike reinforcing steel, they are not susceptible to oxidation and therefore last much longer. Although carbon fibers are more energy-intensive to produce than steel, as used in reinforced concrete, only a small amount is needed for use in building materials. As a result, the energy and CO₂ balance is much better than for reinforced concrete. By using solar heat and biomass to produce the carbon fibers and the weathering of the stone dust, the CO₂ balance of the new building material is actually negative, making it possible to construct CO₂-negative buildings.

The third component of the new building material is biochar. This is used as a filler between the two rock slabs. The char acts as an effective insulating material. It is also a permanent source of CO₂ storage, which plays a significant role in the CO₂ balance of the entire wall element.

From a technical point of view, the already realized demonstrator, a wall element for structural engineering, is well developed. The natural stone used is a gabbro from India, which has a high-quality appearance and is suitable for high loads. This has been proven in load tests.  Bio-based carbon fibers serve as the top layer of the stone slabs. The biochar from Convoris GmbH is characterized by particularly good thermal insulation values.

The CO₂ balance of a house wall made of the new material has been calculated and compared with that of conventional reinforced concrete. This results in a difference in the CO₂ balance of 157 CO₂ equivalents per square meter of house wall. A significant saving!

* (Methods for removing atmospheric carbon dioxide (Carbon Dioxide Removal) by Direct Air Carbon Capture, Utilization and Sustainable Storage after Use (DACCUS).

Polartec® introduces Polartec® Power Shield™ RPM, made from recycled polyester materials and the Polartec® 200, and Micro Series recycled fleeces featuring Polartec® Shed Less™ technology.

Polartec® Power Shield™ RPM is a recycled polyester fabric that offers waterproofness, wind-proofness and breathability, and also ensures high-stretch comfort and resilience. With its high range of motion and highly durable 100% recycled polyester membrane designed for high intensity activities, Power Shield™ RPM elevates end use comfort and is made for runners, cyclists and golfers who refuse to trade performance for sustainability.

Polartec® Shed Less™ technology is an innovative process that decreases fiber fragment shedding during home laundering up to 85%* without compromising the performance or durability of the fabrics it’s applied to. Less shedding means fewer microfiber fragments end up in the oceans and waterways.

Polartec® Micro™ Series is engineered to provide long-lasting comfort in a vast range of conditions and activity levels. This recycled fleece with Polartec® Shed Less™ technology is made from a lofted structure with thermal air pockets to retain warmth without inhibiting breathability. Polartec® Micro™ Series is both hydrophobic and fast drying.

Polartec® 200 Series is the modern version of the original PolarFleece®, which in 1993 became the first performance fleece knit from yarn made from recycled plastic bottles. It has a great resiliency, lightweight warmth and a fast drying time.

Lightweight design is a key enabler for addressing the energy transition and sustainable economy. Following the liquidation of the state agency Leichtbau BW GmbH, a consortium consisting of the Allianz Faserbasierter Werkstoffe Baden-Württtemberg (AFBW), the Leichtbauzentrum Baden-Württemberg (LBZ e.V. -BW) and Composites United Baden-Württemberg (CU BW) now represents the interests of the lightweight construction community in the State.

The Lightweight Design Agency for Baden-Württemberg is set up for this purpose on behalf of and with the support of the State. The Lightweight Construction Alliance BW is the central point of contact for all players in the field of lightweight construction in the State and acts in their interests at national and international level. Professor Markus Milwich from the German Institutes of Textile and Fiber Research Denkendorf (DITF) represents the agency.

The use of lightweight materials in combination with new production technologies will significantly reduce energy consumption in transportation, the manufacturing industry and the construction sector. Resources can be saved through the use of new materials. As a cross-functional technology, lightweight construction covers entire value chain from production and use to recycling and reuse.

The aim of the state government is to establish Baden-Württemberg as a leading provider of innovative lightweight construction technologies in order to strengthen the local economy and secure high-quality jobs.

Among others, the "Lightweight Construction Alliance Baden-Württemberg" will continue the nationally renowned "Lightweight Construction Day", which acts as an important source of inspiration for a wide range of lightweight construction topics among business and scientific community.

Professor Milwich, an expert with many years of experience and an excellent network beyond the State's borders, has been recruited for this task. In his role, Milwich also represents the state of Baden-Württemberg on the Strategy Advisory Board of the Lightweight Construction Initiative of the Federal Ministry for Economic Affairs and Climate Action, which supports the cross functional-technology and efficient transfer of knowledge between the various nationwide players in lightweight construction and serves as a central point of contact for entrepreneurs nationwide for all relevant questions.

From 2005 to 2020, Professor Milwich headed the Composite Technology research at the DITF, which was integrated into the Competence Center Polymers and Fiber Composites in 2020. He is also an honorary professor at Reutlingen University, where he teaches hybrid materials and composites. "Lightweight design is an essential aspect for sustainability, environmental and resource conservation. I always showcase this in research and teaching and now also as a representative of the lightweight construction community in Baden-Württemberg," emphasizes Professor Milwich.

Die Thermore-Gruppe kündigte das Debüt ihrer dynamischsten Stretch-Wattierung "Freedom" an. Diese Wattierung besteht zu 50 % aus recyceltem Post-Consumer-Polyester und bietet Dehnbarkeit und Wärme für eine Vielzahl von Einsatzzwecken, darunter Bergsport, Laufen, Golf, Pendeln, Angeln und Jagen, Radfahren und anderer Aktivitäten.

Dynamometertests zeigen, dass diese Wattierung – die in vier Gewichtungen von 60 bis 150 Gramm/qm erhältlich ist – eine gute Elastizität aufweist und immer wieder auf 100 % ihrer Größe vor der Dehnung zurückspringt.

Die neue Freedom-Wattierung bietet ein hohes Maß an Komfort und Funktionalität. Sie ist maschinenwaschbar, kann chemisch gereinigt werden und ist somit für den Verbraucher pflegeleicht. Aufgrund der hohen Beständigkeit gegen Fasermigration ist sie für Produktentwickler designfreundlich. Außerdem ist sie GRS-zertifiziert.

Freudenberg Performance Materials (Freudenberg) is showcasing solutions for the automotive, building, apparel, filtration and packaging industries at this year’s Techtextil in Frankfurt am Main from April 23 – 26.

Sustainable nonwoven for car seats
One innovation highlight at Techtextil is a novel Polyester nonwoven material for car seat padding. Also available as a nonwoven composite with PU foam, it is not only easier for car seat manufacturers to handle during the mounting process, but also ensures better dimensional stability as well as providing soft and flexible padding. It has a minimum 25 percent recycled content, for example, by reusing nonwoven clippings and waste, and is fully recyclable. Full supply chain transparency enables customers to trace and verify the content of the nonwoven and thus ensures a responsible production process. The Freudenberg experts will also be presenting several other nonwoven solutions made of up to 80 percent recycled materials that can be used in car seat manufacturing.

Biocarrier for green roofs
Freudenberg is showcasing a sustainable carrier material for green roofs on urban buildings at the trade fair. The carrier is made from polylactide, i.e. from renewable resources. When filled with soil, it provides a strong foothold to root systems, enabling the growth of lightweight sedum blankets that can be rolled out to provide instant green roofs. These roofs not only help counter urban heat, they also improve stormwater management and regulate indoor temperatures.

From textile waste to padding
The company extended its circular thermal wadding product range with the release of comfortemp® HO 80xR circular, a wadding made from 70 percent recycled polyamide from discarded fishing nets, carpet flooring and industrial plastic. Because polyamide 6, also known as nylon, retains its performance characteristics after multiple recycling processes, the fibers can be used again and again to manufacture performance sporting apparel, leisurewear and luxury garments.

Packaging solutions with various sustainability benefits
Freudenberg is also showcasing products for sustainable packaging and filtration solutions. The long-lasting Evolon® technical packaging series is a substitute for disposable packaging used in the transport of sensitive industrial items such as automotive parts. The material is made from up to 85 percent recycled PET. A further highlight at Techtextil are Freudenberg’s fully bio-based solutions for manufacturing dessicant bags. The binder-free material based on bio-fibers is also industrially compostable.
In addition, the experts will be giving trade fair visitors an insight into Freudenberg’s filtration portfolio.

INDA, the Association of the Nonwoven Fabrics Industry, announced a call for abstracts for IDEA®, April 29-May 1, 2025, Miami Beach Convention Center, Miami Beach, Florida. IDEA attracts thousands of nonwoven professionals from all functional areas spanning the entire supply chain.

The theme for IDEA25 is “Nonwovens for a Healthier Planet” highlighting nonwoven advancements in sustainability.

Product developers, designers, engineers, technical scouts, and marketing professionals accountable for their product’s environmental impact will attend IDEA. Presentations will focus on responsible sourcing, innovations in sustainability, and end-of-life solutions for nonwovens and its related industries.

A few examples of topics for consideration are:

RESPONSIBLE SOURCING

• Natural Fibers (Cotton, Hemp, Bamboo, Banana, Wood Pulp, Regenerated Cellulose, Wool, Fur, Chitin, Feathers)
• Polymers (Biopolymers, Regenerated and Recycled polymers, Unconventional and Alternatives to Traditional Polymers)
• Sustainable Chemistries (finishes, lubricants, adhesives, and additives)

INNOVATIONS IN SUSTAINABILITY

• Process Improvements with Sustainability Impact (reduced waste, reduced energy, reduced water consumption)
• Product Design Improvements with Sustainability Impact (lightweighting, designs for end-of-life, “good enough” design)

END-OF-LIFE SOLUTIONS

• End-of-Life or Next-Life Considerations (compostability, biodegradability, recycling, advanced recycling and circularity)
• Presenting is an opportunity for technical professionals to showcase pioneering research, innovative solutions, and expert insights with technology scouts.

Abstracts must be submitted via the INDA website by June 7, 2024.

Die Bottle-Systeme des österreichischen Recyclingmaschinenbauers EREMA sind seit 25 Jahren am Markt, knapp 50 Prozent der in den letzten drei Jahren ausgelieferten Bottle-Anlagen wurden in Asien installiert. Die Herstellung von lebensmitteltauglichem rPET rückt dort immer mehr in den Fokus – auch in der Textilbranche. EREMA unterschreitet nicht nur die strengen Grenzwerte der weltweit anerkannten europäischen und nordamerikanischen Behörden für Lebensmittelsicherheit, sondern auch jene von globalen Markenartiklern. Bei der Chinaplas von 23. bis 26. April 2024 in Shanghai präsentiert das Unternehmen sein Portfolio.

Lebensmittelechtes rPET im Aufwind – auch in der Textilindustrie
Zusätzlich zum Lebensmittelbereich spielt lebensmittelkonformes rPET in der Textilindustrie eine zunehmend größere Rolle. Rund zwei Drittel der Gesamtmenge an PET fließen in die Produktion von synthetischen Fasern. EREMA reagierte darauf mit der Gründung einer eigenen Business Applikation für Fasern und Textilien.
Marken setzen immer öfter auf recyceltes PET als Ausgangsmaterial, das den Anforderungen für Food Grade entspricht, um ihren Kunden nachhaltige, gesundheitlich unbedenkliche Textilien anbieten zu können. Ein Trend, der sich bei EREMA im steigenden Absatz von Bottle-to-Fibre Anwendungen widerspiegelt. Asien ist in diesem Segment ein wichtiger Markt.

Schonende Materialaufbereitung für Faser-zu-Faser
Speziell für das Faser-zu-Faser-Recycling wurde die INTAREMA® FibrePro:IV Maschine entwickelt. Durch die Kombination der INTAREMA® Technologie mit dem neuen IV-Uptimiser gelingt es, durch Spinnöle stark kontaminierte geschredderte PET-Fasermaterialen so aufzubereiten, dass aus dem Regranulat wieder feinste Fasern produziert werden können. Die Anlage zeichnet sich durch eine gezielt aktive Oberflächenerneuerung der Schmelze unter Vakuumatmosphäre aus, wodurch Spinnöle und andere Hilfsstoffe effizienter entfernt werden als bei herkömmlichen PET-Recyclingverfahren. Nach der Extrusion wird im IV-Uptimiser die intrinsische Viskosität durch Polykondensation der PET-Schmelze wieder auf jenes Niveau erhöht, wie es für die jeweilige Faserproduktion nötig ist.

Um die Entwicklungen im PET-Faserrecycling voranzutreiben hat die EREMA Gruppe ein eigenes Faser-Technikum am Stammsitz in Ansfelden, Österreich geschaffen. Hier betreibt ein interdisziplinäres Team eine umfangreich ausgestattete und variable Recyclinganlage im Industriemaßstab. Sie ist mit der notwendigen Peripherietechnologie ausgerüstet und steht auch Kunden für Testläufe zur Verfügung.

PrimaLoft, Inc. hat sein Portfolio an synthetischen Daunenalternativen um zwei neue Hochleistungsisolationen erweitert: PrimaLoft® Insulation ThermoPlume®+ und PrimaLoft® Insulation RISE Loose Fill.

ThermoPlume®+
PrimaLoft® ThermoPlume®+ ist eine synthetische Daunenalternative, die entwickelt wurde, um die Wärme, Bauschkraft, Weichheit und Kompressibilität von Daunen zu imitieren. Die Innovation kombiniert zwei einzigartige Faserformen, um den "Loft" und die Wärmeeigenschaften zu erhöhen. ThermoPlume®+ benötigt - verglichen mit der beliebten ThermoPlume® Technologie - ca. 20 % weniger Material, um dieselbe Bauschkraft zu erzeugen.

ThermoPlume®+ kombiniert die bestehende segelförmige Faserstruktur von ThermoPlume mit kugelförmigen Faserkugeln, um ein einheitliches strukturelles Netzwerk zu schaffen. Die Hohlräume zwischen den verschiedenen Formen erzeugen eine Art Gerüsteffekt, der das Gesamtvolumen erhöht, und so eine daunenähnliche Wärme bietet. Die langlebige Struktur hält mehrmaligen Wäschen und Abnutzung stand und trocknet schnell, was eine einfache Pflege ermöglicht, und fühlt sich gleichzeitig besonders weich an. PrimaLoft® ThermoPlume®+ Synthetikfasern  bieten eine Fluorcarbon-freie Wasserbeständigkeit und halten den Nutzer auch bei Nässe warm. Die Isolation besteht zu 100 % aus recyceltem Material.

PrimaLoft® RISE Loose Fill
Die PrimaLoft® RISE-Technologie wurde erstmals im Jahr 2020 eingeführt und erfreut sich aufgrund ihres Mix aus leichter Wärme und dauerhafter Druckfestigkeit in verschiedenen Stärken großer Beliebtheit. Mit RISE Loose Fill hat PrimaLoft diese Faserkonstruktion genutzt, um ein leistungsfähiges loses Produkt zu entwickeln. RISE Loose Fill wird zu 100 % aus recyceltem Material hergestellt und bietet eine Füllkraft von 650 Cuin für ein Höchstmaß an Stil, Wärme und Komfort.

Outdoor & Sport Marken wie adidas TERREX, Rab und Nike sind einige der ersten, die die neuen Innovationen in ihre Kollektionen für die Herbst/Winter Saison 2024 aufnehmen.

The German Institutes of Textile and Fiber Research Denkendorf (DITF) have modernized and expanded their melt spinning pilot plant with support from the State of Baden-Württemberg. The new facility enables research into new spinning processes, fiber functionalization and sustainable fibers made from biodegradable and bio-based polymers.

In the field of melt spinning, the DITF are working on several pioneering research areas, for example the development of various fibers for medical implants or fibers made from polylactide, a sustainable bio-based polyester. Other focal points include the development of flame-retardant polyamides and their processing into fibers for carpet and automotive applications as well as the development of carbon fibers from melt-spun precursors. The development of a bio-based alternative to petroleum-based polyethylene terephthalate (PET) fibers into polyethylene furanoate (PEF) fibers is also new. Bicomponent spinning technology, in which the fibers can be produced from two different components, plays a particularly important role, too.

Since polyamide (PA) and many other polymers were developed more than 85 years ago, various melt-spun fibers have revolutionized the textile world. In the field of technical textiles, they can have on a variety of functions: depending on their exact composition, they can for example be electrically conductive or luminescent. They can also show antimicrobial properties and be flame-retardant. They are suitable for lightweight construction, for medical applications or for insulating buildings.

In order to protect the environment and resources, the use of bio-based fibers will be increased in the future with a special focus on easy-to-recycle fibers. To this end, the DITF are conducting research into sustainable polyamides, polyesters and polyolefins as well as many other polymers. Many 'classic', that is, petroleum-based polymers cannot or only insufficiently be broken down into their components or recycled directly after use. An important goal of new research work is therefore to further establish systematic recycling methods to produce fibers of the highest possible quality.

For these forward-looking tasks, a bicomponent spinning plant from Oerlikon Neumag was set up and commissioned on an industrial scale at the DITF in January. The BCF process (bulk continuous filaments) allows special bundling, bulking and processing of the (multifilament) fibers. This process enables the large-scale synthesis of carpet yarns as well as staple fiber production, a unique feature in a public research institute. The system is supplemented by a so-called spinline rheometer. This allows a range of measurement-specific chemical and physical data to be recorded online and inline, which will contribute to a better understanding of fiber formation. In addition, a new compounder will be used for the development of functionalized polymers and for the energy-saving thermomechanical recycling of textile waste.

The announcement of a new effluent treatment plant (ETP) marks a milestone in Denim Expert's journey towards sustainability. This upcoming facility is a testament to the company's dedication to reducing its ecological footprint and safeguarding local ecosystems through advanced water management techniques.

The new Effluent Treatment Plant (ETP) being developed by Denim Expert strives for 100% wastewater recycling. As the ETP rises from concept to reality, Denim Expert embarks on a transition towards its next horizon: aligning with the Zero Discharge of Hazardous Chemicals (ZDHC) Wastewater Guidelines Version 2.0.

Denim Expert's proactive approach to sustainability has been recognized on a global scale. The company has been named 'New Champion' by the World Economic Forum and has partnered with organizations such as the Sustainable Apparel Coalition (SAC), the United Nations Framework Convention on Climate Change (UNFCCC), and the Ellen MacArthur Foundation's Jeans Redesign program. As one of the first factories to join the Partnership for Cleaner Textile (PaCT) and in the process of implementing the 3E program, Denim Expert is dedicated to achieving 100% water reuse and full reliance on solar energy, further solidifying its commitment to driving positive environmental change.