From the Sector

The Lenzing Group, a leading supplier of sustainably produced specialty fibers, and Renewcell, the Swedish textile-to-textile recycling pioneer, have signed a multi-year supply agreement to accelerate the transition of the textile industry from a linear to a circular business model. The agreement contains the sale of 80,000 to 100,000 tonnes of Renewcell’s 100 per cent recycled textile Circulose® dissolving pulp to Lenzing over a five-year period, for use in the production of cellulosic fibers for fashion and other textile applications.

“The textile industry must change. By signing the agreement with Swedish textile-to-textile recycling company Renewcell, Lenzing is able to further integrate recycling and accelerate the transition of the textile industry from linear to circular. As champions of sustainability, we know that moving towards a circular economy is vital to address the enormous textile waste challenges of the industry”, says Christian Skilich, Chief Pulp Officer of the Lenzing Group.

“Lenzing is a major player in our industry, with an inspiring track record of path-breaking technical excellence and sustainability leadership. Our new partnership fits perfectly into Renewcell’s strategy to accelerate the scale-up of circular materials by collaborating with fashion’s most important players. We are more than pleased to join forces with Lenzing with the shared goal of making fashion circular.” said Patrik Lundström, CEO of Renewcell, in a comment on the agreement.

Canopy, a not-for-profit environmental organization dedicated to protecting forests, species, and climate, welcomes the agreement between Lenzing and Renewcell.
“Accelerating the transition to low-impact, circular production is the challenge of the decade for the fashion industry. That is why this partnership between Renewcell and Lenzing is so refreshing – it will bring low-carbon Next Gen solutions to market at scale,” exclaimed Nicole Rycroft, Executive Director of Canopy. “With the climate and biodiversity clocks ticking, the race to circularity is one we need all companies to win.”
 
It is an essential part of Lenzing’s corporate strategy and ambitious sustainability targets to become a true champion of circularity and to offer TENCEL™ and LENZING™ ECOVERO™ branded specialty textile fibers with up to 50 percent post-consumer recycled content on a commercial scale by 2025. To reach this goal Lenzing partners with recycling pioneers like Renewcell.
Circulose® originates 100 per cent from textile waste, like old jeans and production scraps, and turns into dissolving pulp. It transforms textile waste and production scrap into new high-quality textile products.

Freudenberg recently completed the installation of 13,000m2 of photovoltaic cells on the roof of its new Nantong factory. With a total capacity of 1.6 MW, the new rooftop installation is projected to produce 1.5 million kWh of green electricity each year. In addition to reduced energy consumption from the grid, this new installation will lower CO2 emissions by approximately 1,200 tons/year.

Beyond the photovoltaic installation, Freudenberg has integrated sustainability into the Nantong factory’s design, with advances in energy conservation and emissions and loss reduction.
The factory uses valley voltage to cool water in its reservoir that is applied to A/C and machine temperature management during working hours. The new waste gas treatment technology enables hot water collected by heat exchangers to be directly reused in production, thereby reducing thermal energy waste. Furthermore, the factory applies a new multi-phase waste gas treatment technology to reduce volatile organic compounds (VOC) emissions. The factory has also incorporated new methods to improve the A-grade rates of bi-elastic interlinings and shirt interlinings, further reducing waste while improving garment quality.

As part of the Group’s sustainable development strategy, Freudenberg Apparel has also launched its House of Sustainability to minimize the impact of production processes on the environment and help customers achieve their sustainability goals, with responsible products across the seasons.

Fibres, fabrics, epoxy resins and adhesives from Sicomin have been used by Grand Largue Composites (GLC) to construct the first Class40 racing yacht to feature a significant quantity of flax-fibre reinforcements.
The yacht, called Crosscall, won the Class40 World Championships in June 2022 and is a prototype of the new Lift V2 design by Marc Lombard, one of the leading naval architects in this field.

Class40 is one of the most competitive fleets in yacht racing. The hulls of Class40 yachts must be light in weight, strong and stiff, and durable in the most extreme of conditions. Furthermore, to keep costs down, they cannot be reinforced with carbon fibres. The quality and reliability of the resins used for the infusion and lamination of the hulls are therefore of paramount importance.

Crosscall's cockpit was designed to be effectively non-structural, with the mainsheet, which can generate huge shock loads, supported separately. This would allow the cockpit to be made from a hybrid biaxial fabric comprising 50% flax fibres. Other parts of the boat that incorporate flax fibre include the tunnel, the engine cover, the ballast tanks and the cap. The rest of the boat is reinforced with 100% glass-fibre fabrics.

To help it realise this ambitious design, GLC, an infusion specialist, turned to its long-time material supplier, Sicomin. The hull was moulded and infused in one piece and the deck – including the hybrid flax-fibre cockpit – was also infused as a single part. The internal structure was then laminated into the hull by hand before the hull and deck were finally bonded together.

The infusion resin selected was Sicomin’s SR 1710, a high-modulus structural epoxy. Designed specifically for use in infusion and injection processes, it has exceptionally low viscosity and its low-reactivity hardener makes it suitable for the production of large parts. Composites components made from SR 1710 possess high interlaminar shear-strength and the resin retains its mechanical properties in wet environments.

Sicomin’s low-toxicity SR 8200 was used to laminate the internal structures onto the skin of the hull. Ideal for hand laminating, this system includes a choice of hardeners with a wide range of reactivities, which makes it equally suitable for making large or small parts. The hull and deck were joined together with Sicomin’s Isobond SR 7100, which demonstrates high fatigue strength and is very resistant to microcracking.

An epoxy bonding primer – called Undercoat EP 215 HB+ and supplied by Sicomin’s sister company, Map Yachting – was applied to the moulds first to make demoulding easier. It also serves as an undercoat in the polyurethane exterior paint system that is used instead of gelcoat to protect the epoxy hull from UV damage.

Since the launch of Crosscall, GLC has started building a second Lift V2 Class40 and a third one is now planned, both for which Sicomin will supply the materials.

Freudenberg Performance Materials Apparel (Freudenberg) as a leading specialist in woven, knitted and non-woven interlinings and thermal insulation, presents sustainable solutions for sportswear and related product segments of all kinds in Munich.

Trade show visitors will experience a wide range of innovative and sustainable interlinings for active sports outfits, stretch interlinings for yoga wear, Pilates & Co, and thermal insulations that combine perfect outdoor wearing comfort with high warmth retention. With comfortemp® brand thermal insulations and the Active Range, Freudenberg presents a complete package for outdoor and sportswear for winter sports: thermal insulations, interlinings, tapes, lining fabrics and adhesive solutions.

The independent jury has nominated the 100 percent biodegradable thermal insulation comfortemp® nature Lyocell HO 60x, made from Lyocell regenerated fibers, for the Textrends Award fall/winter 2024/25 season. The award is given exclusively to innovative products that are groundbreaking for the development of the textile industry. comfortemp® nature Lyocell HO 60x has a variety of extraordinary performance characteristics as a high warmth retention, bacteria inhibiting and fast drying, furthermore water repellent. High wearing comfort and the assurance of a perfect moisture balance characterize the volume fleece as ideal for the application in sportswear.

Freudenberg is presenting its entire European and global product portfolio from its "House of Sustainability" at ISPO. The "House of Sustainability" supports Freudenberg in minimizing its ecological footprint and maximizing its ecological handprint. For this purpose, the company's own manufacturing processes are designed to minimize the impact on the environment. In addition, products are developed to help customers produce more sustainably.

The Supervisory Board of Lenzing AG, a world-leading provider of sustainably produced specialty fibers for the textile and nonwoven industries, has appointed Nico Reiner as its new Chief Financial Officer. Mr. Reiner will join Lenzing’s Managing Board led by Chief Executive Officer Stephan Sielaff on January 1, 2023. He will succeed Chief Financial Officer Thomas Obendrauf, who is leaving the company of his own volition after seven years.

Nico Reiner has held several positions in his professional career to date, including CFO at globally operating companies such as Schüco Group, AL-KO Group and Pfleiderer Group, as well as management consultant roles. His most recent appointment was as CFO of Vacuumschmelze GmbH & Co. KG, a global player with headquarters in Hanau that specializes in the development, production and marketing of magnetic materials.

Hologenix, creators of CELLIANT®, and global textile solutions provider UNIFI®, makers of REPREVE®, have announced their partnership to introduce CELLIANT® with REPREVE®. CELLIANT with REPREVE has the infrared properties of science-backed CELLIANT infrared technology and the sustainable footprint of REPREVE, a brand of recycled fiber.

CELLIANT is a blend of IR-generating bioceramic minerals, which, when embedded into textiles, allows them to convert body heat into infrared energy, returning it to the body and temporarily increasing local circulation and cellular oxygenation. This aids significantly in muscle recovery, increases endurance, and improves overall performance in healthy individuals, among other benefits.

REPREVE recycled performance fiber consists of high-quality fibers made from 100% recycled materials, including post-consumer plastic bottles and pre-consumer waste. It is also certified and traceable with U TRUST® verification and FiberPrint™ technology, to back up customers' recycled claims. Compared to virgin fiber, REPREVE helps to offset the use of petroleum, emitting fewer greenhouse gasses and conserving water and energy in the process.

CELLIANT with REPREVE’s official preferred North America knitting partner is Beverly Knits, one of the largest circular knitters in the US, developing fabric for all markets including intimate apparel, activewear, outdoor products, mattress and bedding, automotive, industrial and medical. Beverly Knits also operates Creative Dyeing & Finishing, LLC.

The textile industry is the third largest consumer of plastics. While growth rates in the production of fibres and textiles are high, the circular economy has hardly become established in this segment. The EREMA Group is now intensifying development of recycling solutions for this application with their new fibres and textiles business unit. Currently, the focus is on PET fibre materials from fibre production and subsequent processing steps. Technologies for recycling mixed fibre textiles from textile collection sources are to follow in a follow-up project phase.

"With EREMA's VACUREMA® and INTAREMA® technology and PURE LOOP's ISEC evo technology, our company group already has an extensive range of machines for fibre and PET recycling applications. For ecologically and economically sound recycling, however, new technological solutions are needed to use the recycled fibres in higher-value end applications and to achieve a functioning circular economy," explains Wolfgang Hermann, Business Development Manager Application Fibres & Textiles, EREMA Group GmbH. The initial focus will be on PET, regarded as a key material for the production of synthetic fibres. The aim is to find recycling solutions that allow PET fibre materials to be prepared for reuse in PET fibre production processes. This is a significant step for the circular economy because PET fibres in textiles account for about two-thirds of the total volume of PET.

In this development work, the EREMA Group can build on existing know-how. Proven recycling technologies have been combined with a new IV optimiser. "This extends the residence time of the PET melt, which is particularly necessary in fibre recycling to efficiently remove spinning oils. Our recycling process also increases the IV value of the PET melt after extrusion back to the specific level that is essential for production of the fibre," explains Hermann. Waste PET fibre from production processes can therefore be further processed into rPET filament fibre, carpet yarn and staple fibre.

Fibre test centre with plant to test customers' materials
In order to accelerate development work, EREMA opened its own fibre test centre a few months ago, where a cross-company team is working on recycling solutions for fibre-to-fibre applications.

• Partnership with Spectro Coating Corp. Expands Horizons for the World’s First In-fiber Sustainable Infrared Viscose

CELLIANT® Viscose, which converts body heat into energy, is a combination of nature and performance. It was developed by materials science leader Hologenix®, creators of CELLIANT, a natural blend of IR-generating bioceramics used in textiles, and Kelheim Fibres, a leading manufacturer of viscose specialty fibers. It is the world’s first in-fiber sustainable infrared viscose.  Now Hologenix has partnered with Spectro Coating Corp., the largest vertically integrated flock coating and flock fabric manufacturer in the world, to create the first flocked infrared material with CELLIANT Viscose.

Flocking is an application method in which tiny fibers are piled on to the surface of a textile, creating textures for both decorative and functional purposes. CELLIANT Viscose in a flocked material has many potential applications in the medical field for tapes, bandages, braces and orthopedic products, home textiles and decor, dog beds, clothing, and more.  CELLIANT features natural, ethically sourced minerals, which convert body heat into infrared energy for increased local circulation and cellular oxygenation.  These CELLIANT minerals are then embedded into viscose plant-based fibers. The Viscose fibers are then flocked onto a base material. CELLIANT Viscose provides all the benefits of being a viscose fiber — lightweight, soft, highly breathable, excellent moisture management — as well as the fiber enhancements from CELLIANT infrared technology.

CELLIANT Viscose is the first IR flocked material that Spectro is producing. CELLIANT Viscose also represents a further expansion into sustainable products for Spectro. In addition, Spectro products are made in the USA, as is CELLIANT’s mineral blend.

Electronically conductive fibres are already in use in smart textiles, but in a recently published research article, ionically conductive fibres have proven to be of increasing interest. The so-called ionofibres achieve higher flexibility and durability and match the type of conduction our body uses. In the future, they may be used for such items as textile batteries, textile displays, and textile muscles.

The research project is being carried out by doctoral student Claude Huniade at the University of Borås and is a track within a larger project, Weafing, the goal of which is to develop novel, unprecedented garments for haptic stimulation comprising flexible and wearable textile actuators and sensors.

In Claude Huniade’s project, the goal is to produce conductive yarns without conductive metals.
"My research is about producing electrically conductive textile fibres, and ultimately yarns, by coating non-metals sustainably on commercial yarns. The biggest challenge is in the balance between keeping the textile properties and adding the conductive feature," said Claude Huniade.

Currenty, the uniqueness of his research leans towards the strategies employed when coating. These strategies expand to the processes and the materials used.

Uses ionic liquid
One of the tracks he investigates is about a new kind of material as textile coating, ionic liquids in combination with commercial textile fibres. Just like salt water, they conduct electricity but without water. Ionic liquid is a more stable electrolyte than salt water as nothing evaporates.

"The processable aspect is an important requirement since textile manufacturing can be harsh on textile fibres, especially when upscaling their use. The fibres can also be manufactured into woven or knitted without damaging them mechanically while retaining their conductivity. Surprisingly, they were even smoother to process into fabrics than the commercial yarns they are made from," explained Claude Huniade.

Ionofibres could be used as sensors since ionic liquids are sensitive to their environment. For example, humidity change can be sensed by the ionofibers, but also any stretch or pressure they are subjected to.

"Ionofibres could truly shine when they are combined with other materials or devices that require electrolytes. Ionofibres enable certain phenomena currently limited to happen in liquids to be feasible in air in a lightweight fashion. The applications are multiple and unique, for example for textile batteries, textile displays or textile muscles," said Claude Huniade.

Needs further research
Yet more research is needed to combine the ionofibres with other functional fibres and to produce the unique textile devices.

How do they stand out compared to common electronically conductive fibres?
"In comparison to electronically conductive fibres, ionofibers are different in how they conduct electricity. They are less conductive, but they bring other properties that electronically conductive fibers often lack. Ionofibres achieve higher flexibility and durability and match the type of conduction that our body uses. They actually match better than electronically conductive fibres with how electricity is present in nature," he concluded.

The future of e-mobility will be determined in particular by safe battery enclosures. As batteries for electric vehicles become more performant, higher volumetric energy density plays a crucial role. If more energy is to be stored in less installation space, new material and design solutions are required. The development of suitable enclosures made of safe and highly robust lightweight materials is also required. This is a case for the Aachen Centre for Integrative Lightweight Production (AZL). A project on cell-to-pack battery enclosures for battery-electric vehicles, which has been eagerly awaited in the industry, will start in October this year there.

The design of battery housings is crucial for safety, capacity, performance, and economics. The Cell-to-Pack project, which is starting now, will focus on developing concepts for structural components and for producing them based on a variety of materials and design approaches. The concepts will be compared in terms of performance, weight and production costs, creating new know-how for OEMs, producers and their suppliers throughout the battery vehicle value chain. Companies are now invited to participate in this new cross-industry project to develop battery enclosure concepts for the promising and trend-setting cell-to-pack technology.

The basis for the project is the lightweight engineering expertise of the AZL experts, which they have already demonstrated in previous projects for multi-material solutions for module-based battery housings. Together with 46 industry partners, including Audi, Asahi Kasei, Covestro, DSM, EconCore, Faurecia, Hutchinson, Johns Manville, Magna, Marelli and Teijin, 20 different multi-material concepts were optimized in terms of weight and cost and compared with a reference component made from aluminum. All production steps were modelled in detail to obtain reliable cost estimates for each variant. Result: depending on the concept, 20% weight or 36% cost savings potential could be identified by using multi-material composites compared to the established aluminum reference.

It is expected that the design concept of battery enclosures will develop in the direction of a more efficient layout. In this case, the cells are no longer combined in modules in additional production steps, but are integrated directly into the battery housing. The elimination of battery modules and the improved, weight-saving use of space will allow for higher packing density, reduced overall height and cost saving. In addition, various levels of structural integration of the battery housing into the body structure are expected. These new designs bring specific challenges, including ensuring protection of the battery cells from external damage and fire protection. In addition, different recyclability and repair requirements may significantly impact future designs. How the different material and structural options for future generations of battery enclosures for the cell-to-pack technology might look like and how they compare in terms of cost and environmental impact will be investigated in the new AZL project. In addition to the material and production concepts from the concept study for module-based battery enclosures, results from a currently ongoing benchmarking of different materials for the impact protection plate and a new method for determining mechanical properties during a fire test will also be incorporated.

The project will start on October 27, 2022 with a kick-off meeting of the consortium, interested companies can still apply for participation until then.