From the Sector

ACG Kinna Automatic and ACG Nyström – members of TMAS, the Swedish textile machinery association – have delivered the first microfactory for the production of fully finished filter bags to an international filtration industry customer, in cooperation with JUKI Central Europe.

The microfactory’s configuration is based on two separate interconnecting modules – the Smart Filter Line (SFL) and the Filtermaster 2.0. The SFL handles the fabric feeding from rolls and its folding prior to seam construction, which can either be by automatic sewing, welding or with sewing and taping, depending on specifications. Very rapid changeover of the modular seaming methods can be achieved during product changes. The specific size of the now fully-tubular fabric is then precisely cut to size for each individual unit and further folded ready to be fed into the Filtermaster 2.0. The Filtermaster 2.0 then automatically attaches the reinforcement, bottom and snap rings onto the filter tube with a second Juki sewing head on a robotic arm, to form the fully finished filter bag ready for packaging.

Filter bags are employed in a wide range of industrial processes and while they may be largely under the radar as products, they represent a pretty significant percentage of overall technical textiles production.
They are used in foundries, smelters, incinerators, asphalt plants and energy production plants. Other key manufacturing fields – often where dust is generated – include the production of timber, textiles, composites, waste handling and minerals, in addition to chemicals, food production, pharmaceuticals, electronics and agriculture.

As a further example of the scale of the industry and the high volumes of fabrics involved, one supplier has delivered a single order of 30,000 filter bags to be used for flue gas cleaning at a European power plant. The bags can also be anywhere up to twelve metres in length and frequently have to be replaced.

Textiles for technical applications often derive their special function via the application of coatings. This way, textiles become, for example wind and water proof or more resistant to abrasion. Usually, petroleum-based substances such as polyacrylates or polyurethanes are used. However, these consume exhaustible resources and the materials can end up in the environment if handled improperly. Therefore, the German Institutes of Textile and Fiber Research Denkendorf (DITF) are researching materials from renewable sources that are recyclable and do not pollute the environment after use. Polymers that can be produced from bacteria are here of particular interest.

These biopolymers have the advantage that they can be produced in anything from small laboratory reactors to large production plants. The most promising biopolymers include polysaccharides, polyamides from amino acids and polyesters such as polylactic acid or polyhydroxyalkanoates (PHAs), all of which are derived from renewable raw materials. PHAs is an umbrella term for a group of biotechnologically produced polyesters. The main difference between these polyesters is the number of carbon atoms in the repeat unit. To date, they have mainly been investigated for medical applications. As PHAs products are increasingly available on the market, coatings made from PHAs may also be increasingly used in technical applications in the future.

The bacteria from which the PHAs are obtained grow with the help of carbohydrates, fats and an increased CO₂ concentration and light with suitable wavelength.

The properties of PHA can be adapted by varying the structure of the repeat unit. This makes polyhydroxyalkanoates a particularly interesting class of compounds for technical textile coatings, which has hardly been investigated to date. Due to their water-repellent properties, which stem from their molecular structure, and their stable structure, polyhydroxyalkanoates have great potential for the production of water-repellent, mechanically resilient textiles, such as those in demand in the automotive sector and for outdoor clothing.

The DITF have already carried out successful research work in this area. Coatings on cotton yarns and fabrics made of cotton, polyamide and polyester showed smooth and quite good adhesion. The PHA types for the coating were both procured on the open market and produced by the research partner Fraunhofer IGB. It was shown that the molten polymer can be applied to cotton yarns by extrusion through a coating nozzle. The molten polymer was successfully coated onto fabric using a doctor blade. The length of the molecular side chain of the PHA plays an important role in the properties of the coated textile. Although PHAs with medium-length side chains are better suited to achieving low stiffness and a good textile handle, their wash resistance is low. PHAs with short side chains are suitable for achieving high wash and abrasion resistance, but the textile handle is somewhat stiffer.

The team is currently investigating how the properties of PHAs can be changed in order to achieve the desired resistance and textile properties in equal measure. There are also plans to formulate aqueous formulations for yarn and textile finishing. This will allow much thinner coatings to be applied to textiles than is possible with molten PHAs.

Other DITF research teams are investigating whether PHAs are also suitable for the production of fibers and nonwovens.

Autoneum’s sustainable, textile and lightweight Propylat technology reduces both interior and exterior noise of vehicles. Propylat was originally developed by Borgers Automotive, which was acquired by Autoneum in April 2023. The versatile technology is characterized by a flexible material composition of natural and synthetic fibers with a high recycled content and contributes to significant waste reduction thanks to its complete vertical integration. In addition, the fully recyclable technology variant Propylat PET is now part of the sustainability label Autoneum Pure.

The ongoing electrification of mobility as well as increasingly strict regulatory requirements for vehicle performance in terms of sustainability and acoustics are presenting new challenges to car manufacturers worldwide. With Propylat, Autoneum now offers another lightweight, fiber-based and versatile technology whose sound-insulating and -absorbing properties as well as high content of recycled materials help customers address these challenges. Propylat-based products not only contribute to reducing pass-by noise and improving driver comfort, but they are also up to 50 percent lighter than equivalent plastic alternatives; this results in a lower vehicle weight and, consequently, less fuel and energy consumption as well as lower CO2 emissions.

Autoneum's innovative Propylat technology consists of a mixture of recycled synthetic and natural fibers – the latter include cotton, jute, flax or hemp, for example – that are consolidated using thermoplastic binding fibers without adding any further chemical binders. Thanks to the flexible fiber composition and the variable density and thickness of the porous material, the properties of the respective Propylat variant, for example with regards to acoustic performance, can be tailored to individual customer requirements. This allows for a versatile application of the technology in a variety of interior and exterior components such as wheelhouse outer liners, trunk trim, underbody systems and carpets. For instance, Propylat-based wheelhouse outer liners significantly reduce rolling noise both inside and outside the vehicle while at the same time offering optimum protection against stone chipping and spray water.

In terms of sustainability, Propylat always contains a high proportion of recycled fibers – up to 100% in some variants – and can be manufactured with zero waste. Thanks to the full vertical integration of Propylat and Autoneum’s extensive expertise in recycling processes, the technology also contributes to a further significant reduction in production waste. Moreover, the Propylat PET technology variant, which consists of 100% PET, of which up to 70% are recycled fibers, is fully recyclable at the end of product life. For this reason, Propylat PET has been selected for Autoneum Pure – the Company’s sustainability label for technologies with excellent environmental performance throughout the product life cycle – where it will replace the current Mono-Liner technology going forward.

Propylat-based components are currently available in Europe, North America and China.

Making outdoor sports accessible to as many people as possible since 1976 through quality, innovative gear, powerhouse sporting goods brand Decathlon has launched the first product of its long-term partnership with CELLIANT® infrared technology from Hologenix® – Adult Ski Socks. They are introduced in its Wedze range of ski and snowboarding socks (“wed’ze” means ‘“a small turn on the snow” in the Savoyard dialect in the Alps where this brand is headquartered).  

Decathlon was attracted to CELLIANT’s ability to convert body heat into infrared energy, improving local circulation and cellular oxygenation to support stronger performance and faster recovery. Skiers who often suffer from muscle fatigue in the calf area will appreciate the infrared infusion and light compression attributes that were specifically chosen with this in mind. The sock was also thoughtfully designed for minimum thickness, allowing for a comfortable fit within the ski boot, without sacrificing warmth or durability. Anti-friction thread on the sole and toes helps limit irritation, and seams are intentionally positioned to eliminate discomfort. The socks are offered in a Asphalt Blue color in a variety of sizes, both online and in retail stores worldwide.

Textiles are a given in civil engineering: they stabilize water protection dams, prevent runoff containing pollutants from landfills, facilitate the revegetation of slopes at risk of erosion, and even make asphalt layers of roads thinner. Until now, textiles made of highly resistant synthetic fibers have been used for this purpose, which have a very long lifetime. For some applications, however, it would not only be sufficient but even desirable for the auxiliary textile to degrade in the soil when it has done its job. Environmentally friendly natural fibers, on the other hand, often decompose too quickly. The German Institutes of Textile and Fiber Research Denkendorf (DITF) are developing a bio-based protective coating that extends their service life.

Depending on humidity and temperature, natural fiber materials can degrade in the soil in a matter of months or even a few days. In order to significantly extend the degradation time and make them suitable for geotextiles, the Denkendorf team researches a protective coating. This coating, based on lignin, is itself biodegradable and does not generate microplastics in the soil. Lignin is indeed biodegradable, but this degradation takes a very long time in nature.

Together with cellulose, Lignin forms the building materials for wood and is the "glue" in wood that holds this composite material together. In paper production, usually only the cellulose is used, so lignin is produced in large quantities as a waste material. So-called kraft lignin remains as a fusible material. Textile production can deal well with thermoplastic materials. All in all, this is a good prerequisite for taking a closer look at lignin as a protective coating for geotextiles.

Lignin is brittle by nature. Therefore, it is necessary to blend the kraft lignin with softer biomaterials. These new biopolymer compounds of brittle kraft lignin and softer biopolymers were applied to yarns and textile surfaces in the research project via adapted coating systems. For this purpose, for example, cotton yarns were coated with lignin at different application rates and evaluated. Biodegradation testing was carried out using soil burial tests both in a climatic chamber with temperature and humidity defined precisely according to the standard and outdoors under real environmental conditions. With positive results: the service life of textiles made of natural fibers can be extended by many factors with a lignin coating: The thicker the protective coating, the longer the protection lasts. In the outdoor tests, the lignin coating was still completely intact even after about 160 days of burial.

Textile materials coated with lignin enable sustainable applications. For example, they have an adjustable and sufficiently long service life for certain geotextile applications. In addition, they are still biodegradable and can replace previously used synthetic materials in some applications, such as revegetation of trench and stream banks.

Thus, lignin-coated textiles have the potential to significantly reduce the carbon footprint: They reduce dependence on petroleum-based products and avoid the formation of microplastics in the soil.

Further research is needed to establish lignin, which was previously a waste material, as a new valuable material in industrial manufacturing processes in the textile industry.

The research work was supported by the Baden-Württemberg Ministry of Food, Rural Areas and Consumer Protection as part of the Baden-Württemberg State Strategy for a Sustainable Bioeconomy.

INDA, the Association of the Nonwoven Fabrics Industry, is partnering with the Waterloo Filtration Institute to deliver the FiltXPO™ technical program on October 10-11, 2023 in Chicago, Illinois. The Waterloo Filtration Institute was instrumental in recommending program topics and world-class presenters.

Engineers, scientists, and industry professionals will gain the latest insights into the filtration and separation topics affecting the industry today and into the future. The program features presentations include: filter media technologies, advancements and opportunities in filtration machinery and equipment, innovations in clean air for homes and urban areas, standards and testing, industry trends and new developments, and filtration challenges and opportunities.

The keynote for this year’s event is “IAQ Is the New Black” presented by Suzanne Shelton, President & CEO, Shelton Group. Shelton will share the latest data around consumer views on health, safety, people, and the planet. Participants will gain an understanding of the filtration opportunities and the challenges manufacturers face in communicating the value of their products.

A preview of the subject matter experts includes:

• AAF Flanders – “Air Filter Standards Activity and What It Means for Innovation”
• Ahlstrom – “Expanding Wetlaid Filtration Media Performance Through Innovation”
• Air Techniques International – “Application of Automated Filter Tester in Quality Control Testing: Importance of Consistent Aerosol Particle Size Distribution”
• American Truetzschler, Inc. – “How Really Good Filter Media Is Made”
• CEREX Advanced Fabrics – “The Antimicrobial Nylon Advantage”
• Elsner Engineering Works, Inc. – “When Does Automation Make Sense”
• Hollingsworth & Vose – “Accelerating Membrane Adoption with ROI”
• INDA – “Beyond Porter’s Five Forces – When Regulation Reshapes Markets”
• MANN+HUMMEL GmbH – “Filtration for Cleaner Urban Mobility – Introducing Horizon Europe Innovation Action Aersolfd”
• NatureWorks – “Optimizing Biopolymers to Improve Filter Performance – A Spectrum of Approaches and Opportunities”
• Palas GmbH – “Influence of Temperature and Humidity to Filter Efficiency and Dust Holding Capacity”
• Ptak Consulting – “Residential Filtration – Performance Against Infectious Aerosols”
• The University of Georgia – “Recent Advances in Melt Blown Nonwovens and Filter Media Research”

New this year to FiltXPO are Lightning Talks. Lightning Talks are an opportunity to connect with new trends, products, innovations, and ideas with speakers rotating every eight minutes. Presenting companies include Ahlstrom, Elsner Engineering Works, Inc., Gottlieb Binder GmbH, TSI, and the Waterloo Filtration Institute.

The FiltXPO exhibition takes place October 10-12 and will run concurrently with the technical program.

At the crosswinds of China’s 14^th Five-Year Plan for the Development of the Marine Economy and its 14^th Five-Year Guidance for the Development of the Technical Textiles Industry lies the marine textile sub-sector. Following the government’s directive, the Marine Textile Zone will be unfurled at this year’s fair, taking place from 19 – 21 September 2023 at the Shanghai New International Expo Centre. Multiple exhibitors from across China have confirmed their participation within the zone, which will be comprised of three main parts: green marine science and nautical rope netting innovation display area, the Technology Exchange Forum, and the awards ceremony of the Top 10 Suppliers in the China Rope Net Industry.
 
The global rope market is predicted to experience a CAGR of 5.6% and grow by over USD 4 billion between 2022 - 2027[1], and suppliers are eager for the chance to meet buyers face to face. In fact, many will use the new zone at Asia’s leading technical textiles and nonwovens fair to do so.

In the green marine and rope netting category, exhibitors will showcase the latest innovations along the marine textile industry chain, anchored by application areas such as marine engineering, marine economy, marine fencing, marine rescue, deep-sea fishing, deep-sea aquaculture, and many more.

Featured exhibitors include:

• Ropenet Group: covering 36 application areas, such as aerospace, marine fisheries, safety protection, and emergency rescue, the Shandong-based company has exported to over 110 countries and regions. Products include ropes, nets, threads, and belts, with new materials and high-performance synthetic fibre spinning ropes forming the core of its business.
• Hunan Xinhai: with its Hunan factory covering 200,000 sqm, its industry-leading rope net production scale ensures it can service multiple sectors such as fisheries, sports, military industry, marine engineering, life-saving protection, and many more. Its extensive network spans Asia, Africa, Europe, and beyond.
• Zhejiang Four Brothers Rope: located in Zhejiang Toumen Port Economic Development Zone, the special chemical fibre rope manufacturer integrates R&D, manufacturing, sales, and after-sales service. After nearly 60 years of operation, the company now has a yearly production capacity of over 15,000 tons.

Other notable exhibitors in this zone include Xuzhou Henghui Braiding Machine; Shandong Jinguan Netting; Jiuli Rope; and Zhejiang Hailun Rope Net.

Meanwhile, the Technology Exchange Forum will focus on policies and regulations, strategic development opportunities, market analysis, product and process innovation, and the promotion and application of marine textiles. A range of well-known international and domestic experts have been invited to deliver comprehensive industry analysis, and unveil oceanic green textile initiatives onsite.

Designed to expand the influence of the rope net industry, the Top 10 Suppliers in the China Rope Net Industry awards will highlight enterprises currently making key contributions. Other fringe events related to this textile sub-sector include the Conference on Textile Applications for Marine Engineering and Fisheries, and the China Nonwovens & Industrial Textiles Association (CNITA) Rope Net Branch Council Meeting.

Lastly, the Marine Textile Zone will also encompass a business negotiation area to facilitate negotiations between key players onsite, set against the backdrop of the innovation display area’s award-winning and patented rope net products. As a whole, the zone is expected to encourage independent innovation in marine science and technology, coordinate the protection and development of marine resources, and help build a modern maritime industrial system.

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. This scope of product groups and application areas ensures that the fair is an effective business platform for the entire industry.

The fair is organised by Messe Frankfurt (HK) Ltd; the Sub-Council of Textile Industry, CCPIT; and the China Nonwovens & Industrial Textiles Association (CNITA).

PrimaLoft, Inc., a leader in advanced material technology, is expanding its  Active Insulation Range by adding four new Active Evolve styles, reaffirming its commitment to providing cutting-edge solutions that meet the evolving needs of consumers.

Originally launched in 2018, PrimaLoft Active Evolve is a line of insulating fabrics that is designed to evolve performance, design, and sustainability. Combining the lightweight warmth of insulation with the breathability of fabric, this technology is developed to perform in a wide range of activities, regardless of intensity or season. From pushing yourself during a cross country ski tour, to working up a sweat hiking to the next peak, PrimaLoft Active Evolve keeps you in your comfort zone – even when you’re pushing yourself out of it.

Several products in the Active Evolve line can be used as a next-to-skin fabric. This enables brands to forego liner fabrics, which means heat and moisture are more efficiently managed, breathability is supported, and user comfort is maintained. In addition to achieving optimal performance during aerobic activity, this yields a wider utility and year-round use, all while allowing brands to use less overall material when designing a garment, reducing footprint and waste.

PrimaLoft Active Evolve offers several advantages to designers. It enables them to utilize the full spectrum of color, incorporate unique patterns, and provides greater flexibility in fabric selection. Additionally, Active Evolve eliminates the need for quilting in the design process. Products within the Active Evolve line are made from up to 100% post-consumer recycled content, including three of the four new styles.

With more than a dozen brand adoptions thus far, PrimaLoft Active Evolve’s adaptability for the user, range of use across activities, and seasonal timing, is quickly making this one of the most versatile products in the PrimaLoft portfolio. For Fall/Winter 2023-2024, key partner brands beside Sitka and Löffler will include CP Company, Eddie Bauer, Endura, Martini Sportswear, OMM, Quiksilver, Ziener and more.

OETI – a member of the internationally active TESTEX Group – has bought the German company ECS to expand its service portfolio in the field of personal protective equipment (PPE).

OETI has been offering testing services for textile work clothing since 1983 – for about 40 years. Since the introduction of CE labelling for personal protective equipment and the enactment of the PPE Directive by the European Union in 1993, OETI has not only been testing textile personal protective equipment, but now on also certifies it in conformity with EU standards. In 1995, OETI was certified in Brussels as a Notified Body (0534) for type-examinations and quality assurance monitoring of personal protective equipment end products. Testing and certification is carried out in accordance with the current PPE Regulation (EU) 2016/425.

Testing and Certification Body for Eye and Face Protection, based in Aalen, was founded 15 years ago and is a globally active institution for testing and certification of eye and face protection equipment. The company is one of the leading independent testing institutions for personal protection products in laser applications and for welding work.

ECS tests and evaluates occupational health and safety goggles with and without a filter action, passive and active switching protection filters and shields for welders, and laser protection filters, goggles, and shields. The company also tests the optical properties of sunglasses, sports glasses, ski goggles, swimming goggles and motorbike goggles.

With OETI’s takeover, the ECS location in Aalen is retained, and all employees will continue working at ECS. The new Managing Director of ECS GmbH as of 1 July 2023 is Dipl.-Ing. Rolf Diebolder.

‘We are present on the European market, on the American market and, via a representative office, on the Chinese market. With the aid of the new distribution channels through OETI and TESTEX, we want to steadily advance ECS’ expansion and be present on all five continents’, says Managing Director Rolf Diebolder, explaining his strategic plans for ECS. ‘I would like OETI and ECS to develop a joint strategy in order to be able to offer existing and new customers of both companies a complete package which, when combined, will give us a unique selling point in the marketplace’, says Diebolder.

Diebolder also sees further potential in the cooperation with regard to protective laser clothing. According to him, this is where the laser laboratory commissioned by ECS could be used to make textiles laser-safe. In the future, there will be more and more ‘hand-held’ devices, i.e. laser welding devices, for which gloves and protective jackets are needed.

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.