From the Sector

From April 25^th to 27^th, 2023, the Institute of Textile Machinery and High Performance Material Technology (ITM) of TU Dresden will be exhibiting at the pavilion SAXONY! at JEC World 2023.

The ITM will provide a comprehensive overview of its current research in the field of machine and product development along the entire textile process chain.

The upcoming JEC 2023 exhibition will highlight innovative Customised Connective Cores (CCC), which are custom-made core-insert structures additively manufactured using cellular metal and a form-fit integrated insert. These CCCs can be seamless integrated either as patches or as full-surface core material into lightweight panels, offering significantly improved load-bearing behavior (especially 4 times the load-bearing capacity and fail-safe behavior) compared to existing technologies. This breakthrough opens up new possibilities for fastening lightweight panels.

Another highlight at the exhibition is the repair process for fibre-reinforced composites (FRP) developed at the ITM. Instead of mechanically grinding the damaged area, the matrix in the repair area is locally dissolved using a UV-rays-induced depolymerisation process. Damaged fibres can thus be replaced by a customized repair patch. Free yarn ends on the textile repair patches are spliced with the UV-exposed yarn ends in the repair area using an adapted splicing process. In this way, a very clean, simplified and mechanically improved repair area can be achieved compared to the state of the art.

The diverse possibilities offered by the structure and process simulation of textile high-performance materials and textile manufacturing processes will also be presented. By means of multi-scale modelling and simulation, a profound understanding of materials and processes is achieved at the ITM. Finite element models on the micro, meso and macro scale have been developed and validated for this purpose. Examples from current ITM research projects demonstrate the various possibilities and areas of application of modern simulation methods in the field of textile technology.

Moreover, an innovative process for the integral manufacturing of 3D rib-stiffened preforms with complexly arranged stiffeners in 0°, 90° and ± 45° orientation was developed and successfully implemented at the ITM. Due to the process-integrated structure fixation and the continuous fibre reinforcement between shell and rib structure, the 3D preforms are perfectly suited for the production of highly load-bearing FRP components with increased bending stiffness, which will be exhibited at JEC. Hence, the lightweight construction potential of high-performance fibres can be fully exploited.

A successfully established development are partially flowable 2D textile reinforcement fabrics that are continuously manufactured in one single process step. For this purpose, the entire process chain was developed at the ITM, which allows a cost-effective and high-volume production of load-bearing thermoplastic 3D FRP components with continuous fibre reinforcement between shell and stiffeners.

At JEC 2023, the ITM will also present a partially embedded textile latice girder as reinforcement for carbon concrete applications, which was produced by means of an innovative textile manufacturing process based on the multiaxial warp knitting technology. Through the development of a customized warp insertion, manipulation and take-off system as well as appropriate shaping methods, it is now possible to produce tailored textile semi-finished products, e.g. for use in wall and ceiling panels. These textile latice girders represent a resource-saving alternative to conventional steel girders due to the reduced among of concrete required and the additional cavity for media and cable guidance.

The integration of textile actuators and sensors in FRP provides structures with additional functionalities. The research and application of such interactive FRP with different matrix materials (e.g. with thermoset, elastomer or concrete matrix systems) for structural health monitoring or adaptive systems is one of the key research areas of the ITM.

Moreover, the development and implementation of innovative yarn constructions based on recycled high-performance fibres (e.g. rCF, rGF, rAR) for sustainable FRPs is successfully promoted at ITM. By use of a special carding machine, recycled fibres are opened up, separated and joined to form a wide, uniform ribbon. Subsequently, innovative hybrid yarn constructions made of evenly mixed recycled high-performance and thermoplastic fibres with variable fibre volume fractions can be manufactured by means of various spinning technologies. Selected yarn constructions and components will be showcased at JEC.

The acquisition of the automotive business of Borgers, announced in January 2023, has been completed with effect from April 1, 2023, following receipt of all antitrust approvals. As a result, Autoneum now operates 67 production facilities worldwide and employs around 16 100 people in 24 countries. With the acquisition of the long-established German company, Autoneum is further expanding its global market leadership in sustainable acoustic and thermal management of vehicles. For the planned capital increase of around CHF 100 million for the long-term financing of the acquisition, the shareholders approved the creation of a capital band.

The purchase agreement signed on January 6, 2023, to acquire the assets of the insolvent Borgers companies by Autoneum could be completed. As a result, Autoneum will take over the assets of the Borgers companies in Germany and the shares in the subsidiaries in France, Poland, Sweden, Spain, the Czech Republic, the United Kingdom and the USA as well as in the company in Shanghai, China, with effect from April 1, 2023. As already communicated, the enterprise value paid amounts to EUR 117 million.

The product and customer range of Borgers Automotive, the specialist for textile acoustics protection, insulation and trim for vehicles, ideally complements Autoneum’s sustainable product portfolio. Particularly with the wheel arch liner and trunk lining product lines as well as the truck business, Autoneum’s global presence offers further potential for profitable growth also outside Europe. In addition, Borgers has more than 150 years of experience in recycling textile materials. In the 2022 financial year, the Borgers Group – excluding the mechanical engineering division which was already sold in the summer of 2022 – generated expected annual revenue of around EUR 700 million and employed around 4 500 employees worldwide. Autoneum has agreed new pricing and delivery terms with Borgers’ customers, which will ensure both sustainable profitability and the further development of technologies and processes.

From April 1, the former Borgers sites in Germany will be part of Autoneum Germany GmbH, which has been in existence for many years. The other subsidiaries worldwide will gradually be renamed Autoneum.

International technology group ANDRITZ has delivered, installed, and commissioned a mechanical textile recycling line and an airlay line at Novafiber’s nonwovens production mill in Palín, Guatemala. Both lines have been successfully operating since December 2022.

The recycling line – the second tearing line ANDRITZ supplied to Novafiber – processes post-industrial textile waste from Central America. The recycled fibers feed the latest ANDRITZ Flexiloft airlay line, which produces nonwoven end-products for the bedding and furniture industries – a true example of a circular textile-to-nonwoven approach. The production process ensures complete material use as a state-of-the-art edge trim recycling system returns any waste directly to the tearing and/or airlay line.

This combination of ANDRITZ tearing and airlay lines allows Novafiber to process large amounts of post-industrial garments, controlling the supply chain from raw material to final product. In addition, it enables energy savings and a reduced carbon footprint due to the reduction of shipments.

Based in Palín, Novafiber is a leading company in Guatemala for producing nonwovens from post-industrial textile waste for both the local market and export.

100 days before ITMA 2023 in Milan, VDMA Textile Machinery launched its “Way2ITMA” webinar series. “Transforming the World of Textiles: efficient – digital – circular”. Under this heading, VDMA technology providers will present their solutions along the value chain.

Speakers of the virtual event were Dr. Janpeter Horn, Chairman of the VDMA Textile Machinery Association and Managing Director of August Herzog Maschinenfabrik, Dirk Vantyghem, Director General, EURATEX, Francis Elias Junker, Area Sales Manager, Andritz Laroche and Tanja Karila, Chief Marketing Officer, Infinited Fiber Company.

With regard to the EU strategy for sustainable and circular textiles, Dr. Horn said: “This topic concerns all of us, consumers and producers. We as machinery builders position ourselves as enablers. We want to be part of the solution of this ambitious project”.

Dirk Vantyghem introduced the core issues of the EU textile strategy launched in 2022, which is the most ambitious plan ever, to push the textile sector towards sustainability and transparency, and promote a new circular business model. If wrongly designed, that new framework may collapse the European textile value chain. But if done rightly, the changes ahead could bring a paradigm shift in the sector, where competitiveness is no longer based on price only, but also on sustainability and innovation, explained Vantyghem.

Francis Elias Junker showed high level of expertise for mechanical textile recycling for both spinning and nonwovens industries that Andritz has. The company has a diversity of solutions to offer and several cooperation partners, covering the value chain from recovery of fiber to the chemical modification and preparation for the production of yarn.

Tanja Karila gave an overview of how Infinited Fiber is turning textile waste into new fibers. Patented technology turns post-consumer textile waste into brand new premium quality fibers for the textile industry. The textile-to-textile recycling technology captures the value in waste that would otherwise be landfilled or burned.

Freudenberg Performance Materials (Freudenberg) will present surfacing veils and core materials for lightweight fiber reinforced plastic (FRP) parts at JEC in Paris, France. Freudenberg will also be showcasing Enka® Solutions flow media and spacers for efficient vacuum infusion, resin transfer and foam injection molding processes for applications in the composites industry, etc. at the international composites show.
 
Freudenberg’s solutions for the FRP industry include a variety of glass, PAN and PET nonwovens, as well as core materials for the production of lightweight fiber reinforced plastic parts. These products are designed for anti-corrosion coatings in piping and tank construction, smooth UV resistant surfaces for facade panels, and other applications for a diverse range of end products. Products made from fiber reinforced plastics must be equipped with surfacing veils to provide abrasion resistance, corrosion resistance, smooth surfaces and mechanical strength. Freudenberg offers high-tech nonwovens that can meet these challenges.
 
Enka® Solutions products are characterized by their typical 3D entangled polymeric filament structures. Thanks to this structure, they are exceptionally suitable as flow media and spacers when producing composite materials.

Majocchi, an Italian textile manufacturer, reports that it has achieved functional and visual appeal with its key fabrics since installing Baldwin Technology Co. Inc.’s corona surface treatment technology.  

Based in Tavernerio (Como), Majocchi has a history of being a technological innovator in the textile industry. Within a decade of its conception in 1941, Majocchi became a global supplier of waterproof cotton for rainwear manufacturers. In the 1960s, the company began producing nylon and technical fabrics, which paved the way for it to become a leading provider of textiles for urban fashion, technical workwear and the military today.

Majocchi has partnered with U.S -based Baldwin Technology Co. to utilize its unrivaled corona surface-treatment technology to produce superior wettability and adhesion.  

Corona treatment is a technique that temporarily modifies a substrate’s surface tension  properties. The corona oxidation process improves the penetration and absorption of liquids on cellulosic and synthetic fabrics. Utilizing corona treatment before resin application on fabrics such as lycra and nylon facilitates superior adhesion and resin distribution. As a result, corona-treated fabrics provide exceptional color and tonal quality.  

Majocchi uses Baldwin’s Corona Pure Model to apply polyurethane and acrylic-based coatings to its fabrics. The system allows Majocchi to administer a controllable, uniform coating to achieve the desired functionality and aesthetics.

The system is 2,000 millimeters wide with a discharging station and four ceramic electrodes designed for textile applications with the flexibility of customizing plasma dosage for a given fabric structure, width and process speed. The Corona Pure model allows for fabric treatment up to 300 gr/m² in thickness. The system is customizable, with single-sided and dual-sided treatment capabilities. The “Easy Change” feature allows for a seamless replacing of electrodes and rapid cleaning and removal of fiber and dust residue, maintaining optimal exhaust air flow. The treatment system is built with a swiveling housing mechanism, which provides clearance for changes in textile thickness and protects the ceramic electrodes.

Many people across the world are bedridden – be it due to illness, an accident or old age. Because those affected often cannot move or turn over by themselves, they often end up with very painful bedsores. In the future, it should be possible to avoid bedsores with the help of materials that can be programmed to entirely adapt their form and mechanical properties. For example, the body support of mattresses made from programmable materials can be adjusted in any given area at the push of a button. Furthermore, the support layer is formed in such a way that strong pressure on one point can be distributed across a wider area. Areas of the bed where pressure is placed are automatically made softer and more elastic. Caregivers can also adjust the ergonomic lying position to best fit their patient.

Materials and microstructuring
Materials for applications requiring specific changes to stiffness or shape are being developed by researchers from Fraunhofer CPM, which is formed of six core institutes with the aim of designing and producing programmable materials. So, how can we program materials? “Essentially, there are two key areas where adjustments can be made: the base material – thermoplastic polymers in the case of mattresses and metallic alloys for other applications, including shape memory alloys – and, more specifically, the microstructure,” explains Dr. Heiko Andrä, spokesperson on the topic at the Fraunhofer Institute for Industrial Mathematics ITWM, one of the Fraunhofer CPM core institutes. “The microstructure of these metamaterials is made up of unit cells that consist of structural elements such as small beams and thin shells.” While the size of each unit cell and its structural elements in conventional cellular materials, like foams, vary randomly, the cells in the programmable materials are also variable – but can be precisely defined, i.e., programmed. This programming can be made, for example, in such a way that pressure on a particular position will result in specific changes at other regions of the mattress, i.e., increase the size of the contact surface and provide optimal support to certain areas of the body.

Materials can also react to temperature or humidity
The change in shape that the material should exhibit and the stimuli to which it reacts - mechanical stress, heat, moisture or even an electric or magnetic field - can be determined by the choice of material and its microstructure.

The journey to application
A single piece of material can take the place of entire systems of sensors, regulators and actuators. The goal of Fraunhofer CPM is to reduce the complexity of systems by integrating their functionalities into the material and reducing material diversity. We always have industrial products in mind when developing the programmable materials. As such, we take mass production processes and material fatigue into account, among other things,” says Franziska Wenz, deputy spokesperson on the topic at the Fraunhofer Institute for Mechanics of Materials IWM, another core institute of Fraunhofer CPM. The initial pilot projects with industry partners are also already underway. The research team expects that initially, programmable materials will act as replacements for components in existing systems or be used in special applications such as medical mattresses, comfortable chairs, variable damping shoe soles and protective clothing. “Gradually, the proportion of programmable materials used will increase,” says Andrä. Ultimately, they can be used everywhere – from medicine and sporting goods to soft robotics and even space research.

Under the motto “People Matter” A+A 2023, a Trade Fair for Safety, Security and Health at Work, will revolve around the most important trends of our time: sustainability and digitalisation. Here, exoskeletons also play a prominent role as tomorrow’s ergonomic tools. An important conference in this field is WearRAcon Europe which will be held at A+A from 25 – 26 October 2023 for the first time.

The Conference will be organised by the Fraunhofer Institute IPA in cooperation with the Stuttgart University and the Wearable Robotics Association (WearRA). The 38th A+A Congress, which is held by Bundesarbeitsgemeinschaft für Sicherheit und Gesundheit bei der Arbeit (German Federal Association for Occupational Safety and Health - Basi) will be closely dovetailed thematically and in terms of content with it.

Being able to walk again despite a serious injury, handle heavy parts without outside help or simply do overhead work comfortably and for extended periods of time - the advantages of exoskeletons have already convinced numerous industries. Exoskeletons and wearables are now already being used successfully in industry and commerce, and major machine builders and automakers as well as the medical sector are continuing to experiment with man-machine connections. Currently, the global market volume for exoskeletons is valued by leading analysts at over US$20 billion by 2030.¹

The WearRAcon Europe Conference 2023 will provide new insights into the promising world of exoskeleton systems from different perspectives and, in conjunction with the A+A Congress, set future-oriented impulses. Lectures by renowned exoskeleton pioneers combined with testimonials presented by users from a variety of industries and keynotes by experts will round off the programme. And, like at the previous A+A, a Self-Experience Space will again be set up so that the exoskeleton systems of various manufacturers can be tested in realistic work scenarios.

In parallel with the Self-Experience Space, the large live study Exoworkathlon will also take place again. Trainees from various mechatronic training courses have to complete a concourse and perform holding, lifting and assembling tasks, which have been specially developed with the industry. Data is prospectively collected with different measuring sensors to measure the effects of exoskeletons. In the Exoworkathlon, the IPA focuses especially on prevention for young employees in order to raise awareness of the issue and counteract ailments at an early stage.

¹ (Interview Trans.INFO mit Armin G. Schmidt, CEO von German Bionic (01/2021).

RecyOuest, France, has successfully started up the world's first recycling line for agricultural plastic waste nets at its mill in Argentan. The innovative recycling line featuring a unique dry-cleaning system was delivered, installed and commissioned by the international technology group ANDRITZ in August 2022.

RecyOuest, based in Argentan, France, is a green economy company that handles the recycling contaminated filamentary thermoplastics such as round bale nets and twines. With its recycling process, RecyOuest is part of a circular economy approach.

The ANDRITZ recycling line can process up to 8,000 tons of waste and produce recycling fibers for nonwoven applications and also for pellets made of waste from agricultural single-use plastic nets and twines. These pellets are then returned to the plastics industry by mixing both recycled and virgin raw materials, thus reducing the amount of virgin plastic used.

This line, inspired by the techniques from textile wastes recycling, is equipped with a unique mechanical dry-cleaning system that allows resource savings by avoiding the use of water and chemicals. This state-of-the-art ANDRITZ equipment allows RecyOuest to produce recycling fibers for nonwoven applications and also pellets for ever new eco-designed nets and twines for the agricultural sector, with the lowest possible environmental impact.

• Lectra extends its software offer to material traceability

Lectra announces the signature of an agreement to acquire 51% of the capital and voting rights of the Dutch company TextileGenesis. As a major player in the fashion, automotive, and furniture markets, Lectra contributes with boldness and passion to the Industry 4.0 revolution by providing software, equipment, data, and services to brands, manufacturers, and retailers.

Founded in 2018, TextileGenesis provides a Software as a Service (SaaS) platform that enables fashion brands and sustainable textile manufacturers to ensure a reliable, secure and fully digital mapping of their textiles, from the fiber to the consumer, and thereby guarantee their authenticity and origins. This solution ensures the traceability of TextileGenesis’ customers' entire sustainable textile supply chain in order to meet the demands for transparency, driven by changes in legislation in a growing number of countries and by growing consumer awareness, thereby encouraging sustainable development.  

Its innovative traceability mechanism, which addresses both ends of the textile value chain, as well as its network of partners for material certification, and its technology platform guarantee the exchange and tracking of reliable and secure data throughout a material's life cycle.

Several of the world's most prestigious fashion brands as well as leading sustainable fiber producers are already convinced of the value of TextileGenesis' innovative offer, which enables the connection of multiple actors of the sustainable fashion ecosystem on this platform.

At the beginning of January, Lectra will acquire 51% of TextileGenesis for 15.2 million euros. The acquisition of the remaining share capital and voting rights is expected to take place in two stages, in 2026 and 2028, for an amount that will be calculated based on a multiple of the 2025 and 2027 recurring revenues.