From the Sector

• Award for near-net-shape 3D meshes for use in fibre-reinforced plastics

As part of the JEC FORUM DACH 2022, the AVK Innovation Awards were presented in Augsburg on November 29th. The innovation price in the category "Research/Science" (first place) was awarded to the team of scientists Dipl.-Ing. Dominik Nuss, Dr.-Ing. Cornelia Sennewald and Prof. Dr.-Ing. habil. Chokri Cherif.

With the development of the pull-off-free Jacquard weaving technology including the technological know-how in the field of highly complex 2D and 3D fabric geometries, which has been established at the ITM of the TU Dresden for many years, Dominik Nuss has succeeded in including different yarn lengths locally into the fabric structure solely through targeted variation of the fabric weave. There-fore, it is now possible to produce completely new types of fabrics without additional draping, especially spherically curved fabrics, but also large-format spiral or even curved fabrics. The fact that the required near-net-shape geometry of the component to be reinforced can be reproduced with significantly reduced preforming steps is to be emphasized.

Continuous simulation aided engineering from CAD design to integrally woven 2D and 3D preforms by means of highly complex weave development for spatial constructions is a unique at the ITM, which was indispensable for the development of these promising woven high-tech structures. This technology is completely new and has never been carried out in this way before. The fabric structures are characterised by a high innovation level due to their geometric diversity and purposes. It can be used in numerous applications and further more contributes to the development of completely new fields of application. The technology can be implemented on all Jacquard weaving machines with only an additional device and the preform geometry is only determined by the control of the Jacquard machine. The preform geometry can be used in the full working width of the weaving machine.

Professor Chokri Cherif, Institute Director of the ITM, and his team are very pleased about these continuous research success in the constantly growing research field of 3D weaving technology, which are achieved at the ITM in close cooperation with industry and users. "This award is a special honour for our institute and confirms that the many years of our excellent research in the field of near-net-shape 3D weaving for the fibre-reinforced plastics sector plays a significant role and that we are making a significant contribution to the sustainable and resource-efficient production of lightweight structures with our development".

• The European Confederation for Flax and Hemp (CELC) has unveiled its new visual identity and name: Alliance for European Flax-Linen & Hemp.
• The European Flax-Linen and Hemp industries have announced they are organizing their development around a strengthened team with a clear mission: to expand the entire industry whilst making European Flax-Linen and Hemp the preferred sustainable premium fibers worldwide.
• The Alliance for European Flax-Linen & Hemp will launch its new identity in the first semester of 2023 for all target groups including Natural Fiber Composite Applications.

CELC has announced its new name and visual identity. The organization, which is the only European agro-industrial organization that serves as a global reference, will now be known as the Alliance for European Flax-Linen & Hemp.

The new name - Alliance for European Flax-Linen & Hemp – reflects a newly restructured European industry which brings together the entire value chain around a common goal: to make European Flax-Linen and Hemp the preferred sustainable premium fibers worldwide for Fashion, Technical Textiles and Natural Fiber Composite Applications.

The new brand identity is accompanied by a new logo that connects the identity, values and strategic direction of the Alliance for European Flax-Linen & Hemp. In addition to visual changes, the Alliance has announced enhanced values and a clear strategic path to turn European Flax-Linen and Hemp into the preferred sustainable premium fibers worldwide.

The Alliance’s future development pathway will focus on three distinct strategic pillars.

• Enhancing its work in publishing structured, reliable economic data and information on a regular basis, in order to be able to continuously deploy a set of specific decision-making support tools.
• Transforming the Alliance for European Flax-Linen & Hemp into an innovative and sustainable international reference which continuously improves its environmental footprint through two essential elements: traceability and Life Cycle Analysis.
• Guaranteeing quality and better describing the quality of its fibers by using technological innovations to create a reference for describing long fibers. A description of European Flax® fibers through optical imaging will soon complement the organoleptic method.

“Europe is the top global producer of Flax fiber. In an international context of growth and reindustrialization, Flax, which accounts for just 0.4% of global textile fibers, is a globalized fiber with remarkable technical and environmental properties. At the same time, the European textile Hemp industry is organizing itself to boost growth. Today, the European Flax-Linen and Hemp ecosystem thus embodies an innovative and sustainable European textile dynamic that meets the needs of consumers and brands.” Bart Depourcq, President, Alliance for European Flax-Linen & Hemp.

• ESD protection in harsh environments:
• Polymer-coated chemical-resistant fabrics and fireproof special textiles with expanded electrostatic discharge (ESD) safety function have been developed.
• Graphene nanotubes used as an electrostatic dissipative material make it possible to add ESD protection without compromising resistance to aggressive environments.
• Efficient working loadings starting from 0.06% are sufficient for stable anti-static properties fully compliant with safety standards and position graphene nanotubes far ahead of other conductive materials.

Protective clothing, upholstery, and industrial fabrics that experience harsh conditions require advanced performance. Depending on the final application, specialty textiles can be augmented with flame retardancy, durability, chemical protection, and other properties. Additionally, ESD protection is obligatory in the chemical, rescue, mining, oil & gas, automotive manufacturing, and many other industries that are subject to safety regulations.
 
In applications where multifunctionality of textile is required, graphene nanotubes overcome the limitations of other conductive materials such as unstable anti-static properties; degradation of strength, or chemical or fire resistance; complicated manufacturing processes; dusty production; carbon contamination on the material’s surface; or limited color options. Recent developments show that graphene nanotubes provide ESD protection to textiles in full compliance with safety standards and without degrading the textile’s resistance to harsh environments, greatly enhancing the value of textiles.
 
One such example is textiles coated with fluoroelastomer (a polymer that is highly resistant to chemicals) augmented with graphene nanotubes from OCSiAl. Nanotubes provide the material with surface resistivity of 10^6–10^8 Ω/sq compliant with EN, ISO, and ATEX standards for personal protective equipment. This new technology opens the door for the fabric to be used in high-level protective suits, combining exceptional protection from chemicals with electrostatic discharge protection.
 
Another example is how graphene nanotube technology is being acknowledged as a replacement for metal yarns in fireproof and anti-static textiles, protecting against sparks, splashes of molten metal, high temperatures, and the risk of sudden electrostatic discharge. While metal yarns require a specific knitting process and storage conditions, incorporating nanotubes in a fabric does not require any changes in the manufacturing process as the water-based dispersion is introduced into the fabric at the fluoro-organic treatment stage. The fabric with OCSiAl’s graphene nanotubes has been proven to maintain the pre-set level of ESD protection (surface resistance of 10^7 Ω) after numerous washes.
 
Permanent and stable electrical conductivity, facilitated by graphene nanotubes, is not only a matter of safety but brings additional value in augmenting dust-repellent properties and touchscreen compatibility for comfort and time savings. At the same time, the ultralow nanotube concentrations result in maintained manufacturing processes and mechanical properties, and improve product aesthetics by making it possible to use a wide range of colors. Altogether, these benefits allow textile manufacturers to create next-generation special textiles with expanded functionality.

• made out of recycled PET flakes and recyclable again
• suited for finishing recycled yarns and fabrics
• moisture management in sports and active wear

For the sustainable use of resources, the CHT Group has developed the product ARRISTAN rAIR, according to the principles of the circular economy. Here, plastic waste is converted into a valuable textile finishing product to achieve, for example, optimal moisture management in sports and active wear. Other areas of application include socks and tights in the clothing sector, filtration media and nonwovens in the technical textiles sector, and pillows and curtains in home textiles.

Since ARRISTAN rAIR is made out of recycled PET flakes, it is suited for finishing recycled yarns and fabrics which are subsequently recyclable again.

The hydrophilizing agent ARRISTAN rAIR is characterized by its fast-drying properties in combination with excellent soil release and thermoregulation. It therefore offers, especially in the field of functional textiles, optimal functionalities for high-quality and durable sportswear.

Medline, a medical product distributor and manufacturer, together with Hologenix® launched a new line of CURAD® Performance Series® orthopedic products powered by CELLIANT® infrared technology.

CELLIANT, the flagship innovation of Hologenix, is a proprietary blend of natural minerals that allows textiles to convert body heat into infrared energy, returning it to the body and temporarily increasing local blood flow and cellular oxygenation. This has been clinically demonstrated to support recovery from physical activity and fatigue, increase endurance and stamina, and boost overall performance in healthy individuals, among other benefits.  

Trusted by athletes, CURAD is the Official Medical Supplier of the IRONMAN® U.S. Series. The new orthopedic products powered by CELLIANT infrared technology are the latest additions to the CURAD Performance Series collection and including different infrared supports designed for the ankle, knee, back, shoulder, as well as multipurpose use.

“This new CURAD Performance Series offering represents a major expansion of CELLIANT infrared (IR) bio-responsive textiles into the sports medicine field,” said Seth Casden, Hologenix Co-Founder and CEO. “We are honored to partner with Medline and look forward to future introductions.”

In addition to the inclusion of CELLIANT infrared technology, Medline has engineered the elastic supports to provide targeted compression for enhanced local circulation that helps reduce swelling, with a contoured fit that won’t slip or shift during normal activities with silicone grips that keep the product in place.

The removable hot/cold therapy supports provide adjustable compression and a gel compress that can be cooled or heated to further reduce swelling and discomfort.

From 7 – 9 December 2022, Cinte Techtextil China will welcome visitors sourcing solutions for 12 application areas of technical textiles and nonwovens at the National Exhibition and Convention Center in Shanghai.

A number of countries and regions are represented at the fair’s International Zone, with companies from Austria, Belgium, France, Germany, Hong Kong, Italy, the Netherlands, Spain, Sweden, Switzerland, Taiwan, and the US. Standout international exhibitors include:

• TESTEX, an international, independent Swiss institute which specialises in the testing and certification of textile and leather products. The organisation is a founding member and official representative of the OEKO-TEX® Association, and will present their certification services at the fairground.
• Cotton Council International (CCI) is a non-profit trade association that promotes US cotton fibre and manufactured cotton products, with their COTTON USA™ Mark. At this year’s fair they will showcase cotton spunlace fabric, wipes, kitchen tissues, facial masks, cosmetic removers, and more, with their products particularly applicable to Agrotech, Clothtech, Medtech, and Sporttech.
• Graf + Cie AG is a subsidiary of the Rieter Group, and a leading supplier of clothing for carding and combs for combing machines in the short- and long-staple spinning industry. This year, the Swiss company will showcase stationary flats, and metallic card clothing for roller cards.
• At the returning German Pavilion, buyers can source sought-after technical textiles and nonwovens that are renowned for their quality. The companies and expertise on display at this pavilion are endorsed by the Federal Republic of Germany, with several exhibitors highlighted below:
• Brückner Textile Technologies GmbH & Co KG has developed machinery for the textile industry since 1949. Today, the company offers complete line systems for the dry finishing of both woven and knitted fabric, as well as for technical textiles, glass fibres, and floor coverings.
• Perlon (Zhejiang) Co Ltd is part of a global group of companies that specialises in the manufacture of synthetic filaments, with factories in China, Germany, Poland, and the US. Their products have a diverse range of potential uses, largely categorised in the Agrotech and Indutech application areas.
• IBENA Textilwerke GmbH produces various functional fabrics for Protech. At the fair, the company will be showcasing insulative, flame retardant (FR) textiles for firefighting and search & rescue services. Developed with DuPont™ aramid material, their FR properties will not diminish after washing or repeated use.

This year’s fair also sees the return of the Taiwan Zone. With support from the Taiwan Nonwoven Fabrics Industry Association, the area will showcase a range of industry leading nonwoven products and services, by brands such as KNH Enterprise, Nan Liu Enterprise, Unique Pretty Ind, and Web-Pro Corporation.

As a world’s largest manufacturer of technical textiles, China is home to a vast array of companies responsible for innovative products. Some domestic exhibitors to look out for are:

• CTA Hi-Textiles Co Ltd, a high-tech enterprise controlled by China Textile Science Research Institute. In recent years, the company has developed several new textile composite materials, and their products are widely used in sectors such as national defence, policing and public security, medical protection, and engineering and manufacturing.
• Sateri is one of the world’s largest producers of viscose fibre, with an annual capacity of 1.8 million metric tonnes. At their mills, they make yarn and fibre products applicable to sectors such as beauty, hygiene and personal care, medical, wipes, and protective wear.

To help international buyers stay connected with the Chinese market, Match Plus, the fair’s online business matching platform, will support foreign buyers achieve their sourcing goals despite travel limitations. Further information on Match Plus will be available at a later stage.

The fair’s product categories cover 12 application areas, which comprehensively span a full range of potential uses in modern technical textiles and nonwovens. These categories also cover the entire industry, from upstream technology and raw materials providers to finished fabrics, chemicals and other solutions.

• Patented SILASTIC™ LCF 9600 M Textile Printing Ink Base addresses growing demand for improved performance in textile applications

With the continued global growth of the apparel market, the use of polyester, nylon and blends of these materials with elastane is also on the rise, especially in sportswear and loungewear. To support this higher demand for synthetic textiles, Dow is launching a patented silicone ink – SILASTIC™ LCF 9600 M Textile Printing Ink Base – that can be used for printing on synthetic and cotton fabrics, particularly highly elastic garments.

The increased use of synthetic yarns in recent years has resulted in greater performance requirements on ink chemistries such as durability, elongation and ease of use in highly elastic sportwear. To address these needs, Dow leveraged the exceptional benefits of silicone ink bases with products such as SILASTIC™ LCF 9600 Textile Printing Ink Base and SILASTIC™ 9601 Textile Printing Ink Base.

Designed for an increased matte effect and improved hand feel, the patented SILASTIC™ LCF 9600 M offers excellent wash durability, high elongation, very soft low tack touch and avoids the “orange peel effect” on cotton substrates. Additionally, SILASTIC™ LCF 9600 M enables safer textile development with its ability to be formulated without the use of PVC, phthalates, solvents, organotins and formaldehyde.

• Absorbent Hygiene Products Featuring Advanced Technology Announced:
  pH monitoring pantyliner (Kimberly-Clark), roll dispensing period product (Egal Pad) and novel potty training pad (Sposie Kids)

Three new absorbent disposable hygiene products that provide users with greater protection, convenience and discretion are the finalists for the Hygienix Innovation Award™ that will be selected at Hygienix™, the premier event for absorbent hygiene and personal care markets, Nov. 14-17, at The Roosevelt New Orleans Hotel.

The annual award recognizes and rewards innovation that uses nonwoven material or technology in a way that provides consumer benefit and expands its usage.  
Each of the companies will present their products during the event on Nov. 15 and INDA’s Director of Education & Technical Affairs Matt O’Sickey will announce the winner on Nov. 17, at 11:30 a.m. to conclude Hygienix™.  

Egal Pads: Pads on a Roll™ –A wrapped super-thin absorbent period pad that dispenses like toilet paper in public bathroom stalls, preventing the personal embarrassment of not having a menstrual product when needed. This product promotes period product accessibility and destigmatizes menstrual health. It is targeted to schools and universities and the away-from-home market.

Kimberly-Clark: Kotex® Pantyliner with pH Indicator – The new Kotex Pantyliner with pH indicator, shifts color at the moment it needs to be replaced. This technology works by changing the color from yellow to blue when activated by fluids such as urine, sweat, or others. By indicating the moment to change the product, helps to maintain the intimate area clean, fresh, and consequently healthy.

Sposie Kids: Sposie® Dribbles® Potty Training Pads – An absorbent potty training pad that adheres to boy’s and girl’s underwear to protect against leaks and accidents during the transition from diapers to underwear, while still providing physical cues to the wearer to promote potty training.  The pads absorb over half of an average 2-year-old’s bladder capacity and are 100 percent free from any fragrance, latex, and chlorine.

Hygienix™ Conference Highlights
In addition to the award presentation, the Hygienix™ conference will focus on sustainability with presentations by more than 20 industry experts on sustainable inputs, natural fibers, product transparency, reusable menstrual products, recyclable diapers and the latest market forecasts and insights into consumer buying trends.
Hygienix™ will also offer two specialized workshops, a myriad of business connection opportunities, a welcome reception, first-time attendee mentorship program, and two evenings of tabletop receptions.

Im Automobilbau, dem Schiffsbau und der Luftfahrtindustrie sowie bei Windenergieanlagen steigen die Materialanforderungen zusehends. Die verwendeten Werkstoffe sollen leicht, ressourcenschonend und gleichzeitig hochbelastbar sein. Faserverstärkte Kunststoffe (Composites) rücken immer mehr in den Vordergrund, da deren Eigenschaften in Kombination mit Glas- oder Carbonfasern metallischen Materialien oftmals überlegen sind. Mit Fokus auf die klimaneutrale Herstellung und Nutzung von Produkten wächst auch der Bedarf an Recyclinglösungen. Im SmartERZ-Projekt TRICYCLE arbeiten Unternehmen gemeinsam an geeigneten skalierbaren und wirtschaftlich tragfähigen Prozessen zum Recycling von Smart Composites. Momentan gibt es dafür keine Anbieter oder Konzepte am Markt.

Smart Composites bestehen aus Werkstoffen, deren Funktionalisierung durch die Integration oder Applikation elektrisch leitfähiger Komponenten, z. B. Sensoren oder Mikroprozessoren, erreicht wird. Dazu zählen zum Beispiel smarte Textilien, die elektronisch wärmen, Lichtsignale geben oder zur Datenübertragung genutzt werden können. Das breite Anwendungsspektrum und die vielseitigen Einsatzgebiete dieser intelligenten Verbundwerkstoffe und Multimaterialverbunde werden perspektivisch zu einem wachsenden Bedarf und einer stärkeren Nachfrage führen.

Die funktionale und vielschichtige Verbindung verschiedener Materialien wie Kunststoff, Metall und Textil wirft beim Thema Recycling Nachhaltigkeitsfragen auf. Im Erzgebirge werden dafür bereits heute Lösungen entwickelt. Im Rahmen des WIR!-Projektes SmartERZ ist das Verbundprojekt TRICYCLE entstanden. Mit dem Fokus auf den Strukturwandel im Erzgebirge haben sich acht ortsansässige Partner aus Wissenschaft und Wirtschaft zusammengetan, um ein Recyclingkonzept aufzustellen und die Grobplanung für ein erzgebirgisches Recycling Center zu entwickeln. Das Ende des Produktlebenszyklus und die Nachnutzung bzw. Wiederaufbereitung stehen dabei im Mittelpunkt des Entwicklungsprozesses. Im Ergebnis sollen effektive und maßgeschneiderte Maßnahmen für eine möglichst hochwertige Wiederverwendung entstehen. Diese sollen dem steigenden Aufkommen an Abfällen aus diesem wachsenden Bereich der deutschen Industrie begegnen und anwendungsbereit sein.

Klassische Herausforderungen für die Projektbeteiligten sind die irreversiblen Verbindungstechniken (z. B. Kleben, Faser-Matrix-Haftung), die Integration vieler verschiedener Materialien in geringen Mengen sowie Form und Größe der Bauteile. Eigene Untersuchungen sowie Feedback von Partnerunternehmen bestätigen die Notwendigkeit sowie den Nutzen eines passgenauen Recyclingprozesses für Smart Composites und intelligente Multimaterialverbünde. Das Projekt soll dazu beitragen, den Wirtschaftsstandort Erzgebirge attraktiver und zukunftsfähiger zu gestalten.

Am 1. September 2021 gestartet, kann TRICYCLE erste Ergebnisse vorweisen. Zunächst wurden die Bedarfe bei mittelständischen Unternehmen in der Region Erzgebirge abgefragt, um die aktuellen Gegebenheiten und den Status quo in Bezug auf technologische Recyclingkonzepte bestmöglich abzubilden. Für ein fundiertes Recyclingkonzept hat das TRICYCLE-Team drei Referenzbauteile für den vorgesehenen Prozess ermittelt, die in der erzgebirgischen Wirtschaft Verwendung finden, und folgenden Bereichen zugeordnet: Automotive, Technische Textilien mit applizierter Zusatzfunktion und Technische Textilien mit integrierter Zusatzfunktion.

Basierend auf dieser Auswahl, analysiert das Projektteam momentan die Herstellungs- und bisherigen Recyclingprozesse der Referenzbauteile. Das beinhaltet auch die Planung praktischer Versuche zum Recycling. Dabei fokussieren sich die Projektpartner auf ihr Know-how in verschiedenen chemischen, thermischen und mechanischen Prozessen zur Separierung, Rückführung und Wiederverwendung der eingesetzten Materialien. Um die Produkte den Recyclingtechnologien zugänglich zu machen, wurde die Herangehensweise innerhalb des Projekts angepasst, da insbesondere Textil aufgrund von Form und Struktur (z. B. endlose Struktur) herausfordernd sein kann.

Obwohl die Materialien selbst recycelbar sind, müssen diese dennoch für den Prozess optimal vorbereitet bzw. fachgerecht aufbereitet werden. Die Expertise und die Technologiekompetenz, die hierfür benötigt werden, ist bei den beteiligten Projektpartnern durch jahrzehntelange Erfahrung und zahlreiche Innovationen vorhanden. Das Zusammenspiel aller Beteiligten im Projekt TRICYCLE stellt bereits jetzt die Weichen für das geplante Recycling Center, um dieses später zum Drehkreuz zwischen regionalen Produktionsunternehmen und dem Recycling weiterzuentwickeln. Dieses soll als „Open Factory“ aufgebaut werden, um den Unternehmen des SmartERZ-Bündnisses bzw. perspektivisch der Region Erzgebirge eine gemeinsame Nutzung zu ermöglichen.

„Die Wiederverwendung der eingesetzten Ressourcen ist sowohl aus ökonomischer als auch aus ökologischer Sicht zwingend geboten. Momentan gibt es weder Anlagenbauer noch Dienstleistungsanbieter mit den entsprechenden Kompetenzen zum Recycling von Smart Composites oder Multimaterialverbünden am Markt,“ stellt Johannes Leis, der Verbundkoordinator vom Sächsischen Textilforschungsinstitut e.V. (STFI) in Chemnitz fest.Unter Leitung des STFI als Verbundkoordinator mit seiner über 30-jährigen Erfahrung in der Textilbranche und speziellem Know-how im Recycling von Carbonabfällen haben sich weitere Unternehmen und Forschungseinrichtungen zusammengefunden. Dazu zählen das Textilunternehmen Curt Bauer GmbH, die Professur Fabrikplanung und Fabrikbetrieb der TU Chemnitz, das Ingenieurbüro Matthias Weißflog, der Hersteller für Faserverbundbauteile Cotesa GmbH, der Spezialvlieshersteller Norafin Industries (Germany) GmbH, das Recyclingunternehmen Becker Umweltdienste GmbH und die Hörmann Rawema Engineering & Consulting GmbH. Am Ende der Projektlaufzeit sollen ein einsatzfähiges, technologisches Recyclingkonzept für die zukünftigen entstehenden smarten Produkte sowie die in der Produktion entstehenden Abfälle (bspw. durch fehlerhafte Bauteile und Randbeschnitte) und ein Konzept für den Aufbau eines Recycling Centers vorliegen, das im Erzgebirge entstehen soll.

Geosynthetics have become an indispensable part of the construction industry. PP nonwovens, for example - mechanically bonded continuous fibres made from specially UV-stabilised polypropylenes - are often used in blanket form as barriers, screens and filters, and their strength extends the service life of construction projects. Whether for road construction, or as barrier on glaciers or against weeds - there are myriad applications.

TenCate Geosynthetics uses the PURE LOOP ISEC evo technology to recycle this type of PP nonwoven. The European company, with locations in Austria, France and the Netherlands, is specialised in the development and production of geotextiles for modern civil engineering applications. The edge trimmings and production rejects generated during manufacturing used to be recycled at the Linz site, but not fed back into the company's own production process.

"The demands on us were high," recalls Patrick Wiesinger, project manager at PURE LOOP. "The PP nonwoven is highly tear resistant, which means its a very challenging recycling process. Our ISEC evo machine conserves the quality of the production waste really well during recycling, so we were able to achieve the specified increase in quality for the recyclates."

Another advantage of PURE LOOP technology is the wide range of shapes in which the production scrap can be delivered for processing. "Our ifeed technology with double feed ram system and singleshaft shredder offers the ideal conditions for direct processing of these large rolls - and without the need for prior preparation of the input material by employees before the material is fed into the recycling process", emphasizes Patrick Wiesinger. With the ISEC evo recycling machine TenCate can now manufacture its high-strength PP nonwoven product with a recyclate content of up to 10 percent.