From the Sector

The Dutch company Knitwear Lab helps visions become reality. The creative think tank offers capacities in the areas of R&D, design, knitwear development and production of prototypes and small quantities and has thus implemented a wide range of projects in recent years. The objects range from medical products and high-tech sportswear to smart textiles with integrated sensors. Sustainability activities are also part of the repertoire, such as the production of yarns from recycled waste.

Knitwear Lab operates at two locations for its diverse tasks: Almere in the Netherlandsis available for development work. In Istanbul, there is a branch for production. Both Knitwear Lab sites each have five STOLL flat knitting machines, including models from the modern ADF range. Prototypes are produced in Almere and there is small-scale production. The production plant in Istanbul specializes in the manufacture of high-quality knitwear in small quantities. STOLL is also involved in the creative processes. For the industrial development of knitwear, Knitwear Lab offers Virtual Knitting, a revolutionary method that combines virtual and physical elements of pattern development and knitwear production to reduce waste and pre-production steps. Customers can use Virtual Knitting to create realistic, producible collections, simplify their design iteration processes and take advantage of the wide range of real-life colorways. The basis for this is comprehensive knitwear expertise, the latest 3D software and the CREATE PLUS patterning software, which was developed by STOLL together with KM.ON.

"The 3D visualization of CREATE simplifies communication with the customer considerably. We use this function every day," says Annika Klaas, Senior Knitwear Programmer. She personally appreciates the uncomplicated grading and exchange of stitch dimensions and the much faster and more efficient work with Dimensioned Shapes that this makes possible. This helps her in her day-to-day work. "We often have requests to realize the same product in different yarns, which now works much faster," says the programmer. Further simplifications would include minor optimizations in terms of the efficiency and user-friendliness of programming and additional import and export options for shapes. Discussions on implementation are already underway.

Researchers at the ITA, the University of Bonn and Heimbach GmbH have developed a new method for removing oil spills from water surfaces in an energy-saving, cost-effective way and without the use of toxic substances. The method is made possible by a technical textile that is integrated into a floating container. A single small device can remove up to 4 liters of diesel within an hour. This corresponds to about 100 m2 of oil film on a water surface.
 
Despite the steady expansion of renewable energies, global oil production, oil consumption and the risk of oil pollution have increased steadily over the last two decades. In 2022, global oil production amounted to 4.4 billion tons! Accidents often occur during the extraction, transportation and use of oil, resulting in serious and sometimes irreversible environmental pollution and harm to humans.

There are various methods for removing this oil pollution from water surfaces. However, all methods have various shortcomings that make them difficult to use and, in particular, limit the removal of oil from inland waters.

For many technical applications, unexpected solutions come from the field of biology. Millions of years of evolution led to optimized surfaces of living organisms for their interaction with the environment. Solutions - often rather unfamiliar to materials scientists and difficult to accept. The long-time routine examination of around 20,000 different species showed that there is an almost infinite variety of structures and functionalities. Some species in particular stand out for their excellent oil adsorption properties. It was shown that, e.g., leaves of the floating fern Salvinia molesta, adsorb oil, separate it from water surfaces and transport it on their surfaces (Figure 1, see also the video of the phenomon.).

The observations inspired them to transfer the effect to technical textiles for separating oil and water. The result is a superhydrophobic spacer fabric that can be produced industrially and is therefore easily scalable.

The bio-inspired textile can be integrated into a device for oil-water separation. This entire device is called a Bionic Oil Adsorber (BOA). Figure 2: Cross-section of computer-aided (CAD) model of the Bionic Oil Adsorber. The scheme shows an oil film (red) on a water surface (light blue). In the floating cotainer(gray), the textile (orange) is fixed so that it is in contact with the oil film and the end protrudes into the container. The oil is adsorbed and transported by the BOA textile. As shown in the cross-section, it enters the contain-er, where it is released again and accumulates at the bottom of the container. See also the video regarding the oil absorption on the textile, source ITA).
 
Starting from the contamination in the form of an oil film on the water surface, the separation and collection process works according to the following steps:

• The BOA is introduced into the oil film.
• The oil is adsorbed by the textile and separated from the water at the same time.
• The oil is transported through the textile into the collection container.
• The oil drips from the textile into the collection container.
• The oil is collected until the container is emptied.

The advantage of this novel oil separation device is that no additional energy has to be applied to operate the BOA. The oil is separated from the surrounding water by the surface properties of the textile and transported through the textile driven solely by capillary forces, even against gravity. When it reaches the end of the textile in the collection container, the oil desorbs without any further external influence due to gravitational forces. With the current scale approximately 4 L of diesel can be separated from water by one device of the Bionic Oil Adsorber per hour.

• It seems unlikely that a functionalized knitted spacer textile is cheaper than a conventional nonwoven, like it is commonly used for oil sorbents. However, since it is a functional material, the costs must be related to the amount of oil removed. In this respect, if we compare the sales price of the BOA textile with the sales prices of various oil-binding nonwovens, the former is 5 to 13 times cheaper with 10 ct/L oil removed.
  Overall, the BOA device offers a cost-effective and sustainable method of oil-water separation in contrast to conventional cleaning methods due to the following advantages:
• No additional energy requirements, such as with oil skimmers, are necessary
• No toxic substances are introduced into the water body, such as with oil dispersants
• The textiles and equipment can be reused multiple times
• No waste remains inside the water body
• Inexpensive in terms of the amount of oil removed.
• The team of researchers from the ITA, the University of Bonn and Heimbach GmbH was able to prove that the novel biomimetic BOA technology is surprisingly efficient and sustainable for a self-controlled separation and automatic collection of oil films including their complete removal from the water. BOA can be asapted for open water application but also for the use in inland waters. Furthermore, it is promising, that the textile can be used in various related separation processes. The product is currently being further developed so that it can be launched on the market in 2-3 years.

Successful SMCCreate 2023 Design Conference in Prague

With over 60 participants from Europe and the USA the second edition of the SMCCreate Design Conference took place from November 7th to 8th in Prague. The conference was jointly organized by the AVK – Federation of Reinforced Plastics and the European Alliance for SMC BMC, promoting the use of SMC and providing design tools to designers for applying these versatile materials.

During the SMCCreate 2023 conference topics covered the wide spectrum of the design with fiber composite/composite components in SMC and BMC technology, from conceptual design, development, and scale-up, with a special emphasis on recycling and sustainability solutions. 18 speakers from various European countries showed how they address important market trends and changing customer needs, and which solutions their companies offered in terms of materials, performance and much more.

As an introduction, speakers - including CTC/Airbus and Teijin - presented different possible applications for SMC and BMC components, including aircraft interiors, bicycle boxes, and applications in e-mobility. The topic of sustainability was broadly covered, highlighting recycling solutions and experiences (Siemens, IDI, OC, AOC), the use of renewable raw materials, as well new LCA models developed by the SMC BMC Alliance (LCS),

Specifically for designers, the use of the SMC flow and curing modelling was presented (ESI, OC), SMC positioning vs. aluminium (Spartners). The second day concluded with contributions on process optimization options for component production, including speeches by Dieffenbacher, Netzsch and EBG.

Since the rapid growth brought about by the pandemic, the technical textiles and nonwovens markets are stabilising towards a new normal – one in which technological innovation, sustainable development, and intelligent manufacturing are the most sought-after qualities. Held from 19 – 21 September 2023 at the Shanghai New International Expo Centre, the fair amplified this new industry direction, both through its fringe programme and across the booths of the 40,000 sqm show floor. With a nearly one-third increase from 2021, 467 exhibitors representing 13 countries and regions engaged a significantly international visitor flow, numbering 15,542 total visits from 52 countries and regions. Suppliers showcased up-to-date products for multiple application areas, with various equipment, technical textiles and nonwovens for agriculture, automotive, protective apparel, and medical and hygiene especially prevalent.

Speaking at the fair’s close, Ms Wilmet Shea, General Manager of Messe Frankfurt (HK) Ltd, had an optimistic outlook for the future of the sector: “Sustainability and innovation often go hand-in-hand, and walking through the various halls, zones, and pavilions these past few days the evidence for this was widespread. With environmental protection more important than ever, and buyers across application areas increasingly sourcing eco-friendly solutions, our exhibitors were well-placed to meet that demand. This fair is consistently at the leading edge of technological progress, and with the global and domestic markets showing signs of improving further, we are already looking forward to what we can offer at next year’s edition.”  

With many overseas exhibitors making a comeback, this year’s fair was marked by the return of the Taiwan Pavilion and the 40-exhibitor strong European Zone. Beyond the international areas, domestic pavilions were organised by Beijing Guanghua, China Hang Tang Group, Funing, Jiujing, Shenda, Tiantai, Xianto, and Xiqiao, showcasing nonwovens for various sub-sectors, including filtration and medical. Valuable insights were exchanged at multiple fringe events, including the 11th China International Nonwovens Conference, the Advanced Technical Textiles Industry Chain Synergistic Innovation Development Forum, various events covering marine textiles and rope netting, and the “Kingsafe Dangs” National University Students' Nonwovens Development and Applications Showcase. Visitors, meanwhile, were pleased with the innovation on show across the entire platform.

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 combination of high strength and rigidity with sustainability and a neutral carbon footprint makes flax the ideal raw material for natural fibre-reinforced plastics. vombaur offers composite textiles made of this natural fibre for the automotive, wind power, construction or sports industries and many other sectors.

Flax fibres are rigid and tear-proof. They have natural bactericidal properties, are virtually antistatic, stain resistant and easy to spin. Humans have taken advantage of these properties to manufacture robust, stain-resistant and lint-free textiles. Between the late 19^th and late 20^th centuries, cotton largely replaced natural fibres. Because flax can be grown in Europe and consumes less energy and water than cotton production, the material's importance is currently growing again, for both clothing and composites. Regional textile value added chains in Europe – flax makes them possible.

Ideal mechanical properties
vombaur makes the mechanical properties of flax usable for lightweight design. Because flax fibres are particularly rigid and tear-resistant, they ensure great stability in natural fibre-reinforced plastics (NFRPs). And thanks to their low density of 1.50 g/cm3, the fibres weigh virtually nothing. On top of this, fibre-reinforced plastics are less prone to splintering than glass fibre-reinforced plastics.

Excellent carbon footprint
The cultivation of flax binds CO₂ and the production of natural fibre-reinforced plastics (NFRPs) generates approximately one third less CO₂ emissions compared with conventional fibre-reinforced plastics. Energy consumption is substantially lower. This saves resources. The use of flax fibre tapes by vombaur in lightweight design applications also improves the product's carbon footprint and contributes to a secure, regional supply chain.

Recycling without impacting on quality
Flax offers another sustainability benefit: more recycling cycles than glass- or carbon fibre-reinforced plastics – without impacting on quality. Thermoplastic fibre-matrix prepregs are melted and reused in the recycling process. The natural fibres can be used in other products such as natural fibre-reinforced injection moulded parts.

Sustainable product developments for many industries
"Orthoses for high-performance sports, high-tech skis, wind turbines, components for the automotive industry or aerospace, but also modern window profiles – the application scope for our lightweight design flax tapes is amazingly diverse", as Carl Mrusek, Chief Sales Officer at vombaur explains. "After all, wherever flax tapes are used, three key properties come together: light weight, strength and sustainability".

Climate change is causing temperatures to rise and storms to increase. Especially in inner cities, summers are becoming a burden for people. While densification makes use of existing infrastructure and avoids urban sprawl, it increases the amount of sealed surfaces. This has a negative impact on the environment and climate. Green facades bring more green into cities. If textile storage structures are used, they can even actively contribute to flood protection. The German Institutes of Textile and Fiber Research (DITF) have developed a corresponding "Living Wall".

The plants on the green facades are supplied with water and nutrients via an automatic irrigation system. The "Living Walls" operate largely autonomously. Sensory yarns detect the water and nutrient content. The effort for care and maintenance is low.

Innovative hydraulic textile structures regulate water flow. The rock wool plant substrate on which the plants grow has a large volume in a small space thanks to its structure. Depending on how heavy the precipitation is, the rainwater is stored in a textile structure and later used to irrigate the plants. In the event of heavy rainfall, the excess water is discharged into the sewage system with a time delay. In this way, the "Living Walls" developed at the DITF help to make efficient use of water as a resource in post-densified urban areas.

The research project also scientifically investigated the cooling performance of a green facade. Modern textile technology in the substrate promotes the "transpiration" of the plants. This creates evaporative cooling and lowers temperatures in the surrounding area.

The work of the Denkendorf research team also included a cost-benefit calculation and a life-cycle analysis. Based on the laboratory and outdoor studies, a "green value" was defined that can be used to evaluate and compare the effect of greening buildings as a whole.

As a trade fair for safety and occupational health in China, the 104th China International Occupational Safety & Health Goods Expo (CIOSH 2023), organized by China Textile Commerce Association (CTCA) and Messe Düsseldorf (Shanghai) Co., Ltd. (MDS), will be grandly held at the Shanghai New International Expo Centre (SNIEC) Hall E1-E7 from 13-15 April 2023. Following three years of epidemic prevention and control measures, the situation has stabilized in China, allowing the labor protection market to enter a phase of rapid recovery and rebound. CIOSH 2023 will attract over 1,500 exhibitors from 14 countries, showcasing their latest protective equipment and technology in an exhibition area exceeding 80,000 square meters.

Integrating Online and Offline Platforms
CIOSH 2023 encompasses four major sectors: Safety at Work, Security at Work, Health at Work, and Emergency Rescue Management. Renowned domestic and international exhibitors, including 3M, Honeywell, Ansell, SATA, JSP, MSA, DELTAPLUS, Lakeland, Cortina, UVEX, CM Chaomei, Xing Yu Gloves, DS, East Asia Glove, Hanvo, SOMO Zhongmai Safety, SAFETY-INXS, and TELPS, will assemble on site. At the same time, CIOSH 2023 has introduced an innovative online platform - CIOSH VIRTUAL. By offering online displays, live streaming, interactive features, and real-time communications, it breaks time and space constraints, facilitating exhibitors and visitors to continue their business exchanges and cooperations beyond the physical exhibition. So far, nearly 1,300 companies have joined the CIOSH VIRTUAL, showcasing more than 3,000 products online and attracting over 70,000 views.

CIOSH Industry Technical Seminar, Sustainable Development Emerges as the Key Focus
The annual Industry Technical Seminar, held concurrently with CIOSH, serves as a platform for professionals to discuss product solutions, share industry insights, and exchange ideas on relevant policies. In 2021, China integrated climate change mitigation measures into its 14th Five-Year Plan, established a 2030 carbon peaking action plan, and proactively pursued the goal of carbon neutrality by 2060. Under the development objectives of "carbon peaking" and "carbon neutrality," the sustainable development of the personal protective equipment (PPE) industry has become the primary theme of this year's seminar. Experts from China Carbon Low-carbon Certification (Jiangsu) Co., Ltd., China Certification Centre, Inc., and SGS-CSTC Standards Technical Services Co., Ltd., will examine related policies, the effects of "carbon neutrality" on the PPE industry chain and the industries using PPE from different angles. They will also explore the future direction of PPE and offer professional guidance for the transformation of relevant enterprises.

Fall Protection Zone
Falls from height are one of the most common accidents that cause serious injury or death to workers. Effective fall protection requires not only protective equipment, but also professional instructions and training. Therefore, CIOSH set up a new Fall Protection Zone in 2021, which received unanimous acclaim. CIOSH 2023 has continued to invite SKYLOTEC, rothoblaas, JECH, Mode and NTR Safety, five companies that specialize in protection at height, to conduct on-site demonstrations on fall testing, fall protection solutions and aerial rescue, and provide visitors with the most professional fall protection guidance and training.

Occupational Health
CIOSH has always implemented the strategy of expanding the business scope in a diversified way, which devotes itself to providing innovative opportunities and new driving forces for the sustainability of the occupational safety and health industry. This year, focusing on the "occupational health" sector, the exhibition will launch an Ergonomics Zone and an Exoskeleton Technology Zone for the first time.

• Iconic 200 Series fleece to be the first fabric made from this new process.

Polartec®, a Milliken & Company brand, announces Polartec® Shed Less Fleece, a new milestone in its industry-leading efforts to reduce textile fiber fragment shedding. Shed Less is a process that combines yarn construction, knitting, chemistry, and manufacturing to reduce home laundry fiber fragment shedding by an average of 85%. The first fabric to receive this new technology is the brand’s iconic Polartec® 200 Series Fleece, the modern version of the original PolarFleece® launched in 1981, and in 1993, the first performance fleece knit from yarn made from recycled plastic bottles.

The Shed Less process works by engineering the lofted fibers that give fleece its soft hand the ability to resist breaking and rubbing off during home laundering, cited as one contributing factor to the spread of fibers fragments (commonly referred to as microfibers). Polartec® Shed Less Fleece achieves this while maintaining all of the attributes that continue to make Polartec fleece a staple of midlayer collections - lightweight, breathable and warm.

The brand used the AATCC (American Association of Textile Chemists and Colorists) TM212-2021 test method for fiber fragment release during home laundering. This test was conducted with large sample sizes to account for variability. The testing concluded that Shed Less Fleece reduced fiber fragment shedding by an average of 85% compared to the baseline fabric.

“In 2016 we began looking into how we might test for fiber loss because there wasn’t a lot of research on the issue.” said Aimee LaValley, Polartec Textile Development, Dye and Chemistry Manager. “This led to new products like Polartec Power Air™, new manufacturing processes, as well as our participation in the TextileMission workgroup to study the issue on an interdisciplinary basis.”

TextileMission was a three year collaborative initiative of academia and industry to reduce the impact of textile microplastics funded by the German Federal Ministry of Education and Research. Founding partners include The Association of the German Sporting Goods Industry, Hochschule Niederrhein - University of Applied Science; TU Dresden - Institute of Water Chemistry; Vaude Sport; WWF Germany; Adidas AG; Henkel AG; Miele & CIE; and Polartec, LLC.

Polartec® Shed Less Fleece will be initially launched in the United States and will be available to customers beginning March 1, 2023. The brand plans to apply the Shed Less process to many other industry-leading fabric platforms and manufacturing facilities around the world.

With China easing its pandemic restrictions, foreign exhibitors and buyers can look forward to quarantine-free travel when participating at this year’s industry showcase in Shanghai. The technical textile and nonwovens fair is scheduled to take place from 19 – 21 September 2023 at the Shanghai New International Expo Centre, amid positive market forecasts for both sectors. The organisers are anticipating a strong showing and the conclusion of an inconsistent period for in-person textile business.

“The industry has demonstrated incredible patience and resilience over the course of the pandemic,” said Ms Wilmet Shea, General Manager of Messe Frankfurt (HK) Ltd. “With both markets growing and China opening its borders, we are excited at the prospect of providing participants with an international, business-friendly platform and expect to welcome a healthy number of exhibitors later this year.”

The global technical textile and nonwovens markets are both set to perform strongly over the next few years. According to Grand View Research, the technical textile market is forecast to expand at a CAGR of 4.7% from 2022 to 2030^[1]. The nonwoven fabrics market is anticipated to display an even stronger CAGR of 5.6% during the same period^[2], with Asia-Pacific to maintain its position as the biggest regional market.

As one of Asia’s leading trade fairs for the abovementioned sectors, Cinte Techtextil China is the preferred platform for multiple industry players. Speaking at the previous edition in 2021, Mr Seven Shen, Sales Manager at Libero Trading (Shanghai) Co Ltd, China, said: “We have been exhibiting at this fair for years, and know we will meet our target customers at every edition. The buyers here are all highly specialised.”

During his interview at the same edition, Mr Eric Ni, Senior Manager, China Supply Chain Marketing for Cotton Council International, USA, commented: “We hope to use this platform to meet more companies and brands in the nonwovens industry who are interested in US cotton, and to meet up with old friends to discuss the current situation and industry trends. The fair’s buyers are quality, and we have found some new potential clients at this edition.”

Many buyers at the previous edition also gave positive appraisals. “As a professional trade fair for technical textile and nonwoven products, Cinte Techtextil China is not only a platform to gather qualified industry players, but also the best place to showcase new products and innovations,” said Mr Lin Bin, Technical Director at Zhejiang Xinna Medical Device Technology Co Ltd, China. “Specific and high quality products enhance sourcing efficiency for buyers, and exposure to new trends and market developments ensures my company visits here regularly.”

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.

^[1] “Technical Textile Market Size, Share & Trends Analysis Report 2022-2030”, 2022, Grand View Research, https://bit.ly/3IAxQIK, (Retrieved: January 2023)
^[2] “Nonwoven Fabrics Market Size”, 7 September 2022, GlobeNewswire, https://bit.ly/3CxPE3u, (Retrieved: January 2023)

Toray Industries, Inc., announced that it has combined nanotechnology and fiber technology to create a cross-shaped polymethyl methacrylate (PMMA) nanopore fiber that efficiently adsorbs pathogenic proteins in the blood.

The company developed this fiber by employing its PMMA hollow fiber membrane spinning technology. Changing the nanopore size on the surface and inside the fiber makes it possible to control the types of protein that this material adsorbs. This could become a fundamental blood purification technology for a range of protein adsorption columns that cause diseases.

The fiber’s cross-shaped cross section has a larger surface area than fibers with round ones. This provides much better contact between the blood and fiber and significantly enhances protein adsorption efficiency.

Toray is the only company to have commercialized a PMMA hollow-fiber membrane artificial kidney for dialysis treatment. Its new nanopore fiber benefits from PMMA’s good protein adsorption and biocompatibility. Using the structural formation of a stereocomplex from two PMMA types entangled spirally during the spinning process to form the fiber shape, Toray made it possible for the fiber itself to develop pores of several to dozens of nanometers. Depending on the pore size, large proteins cannot go inside the pores. If they are too small, they are not trapped. This enables selective adsorption of moderately sized proteins trapped in pores.

The fiber pore sizes are adjustable to the diameters of target proteins for a range of diseases. These include inflammatory proteins in sepsis, autoantibodies in autoimmune diseases, and causative proteins in chronic illnesses. Toray’s technology is thus fundamental to developing disease-causing protein adsorption columns to purify blood.

Toray’s cross-shaped cross section suppresses inter-fiber adhesion, increasing the surface area per volume and enabling highly efficient protein adsorption. For blood purification applications, higher capacity adsorption columns increase blood removal amounts from the body, which can be especially stressful for the elderly and children. The new fiber’s highly efficient protein adsorption should contribute to compact, high-performance protein adsorption columns.