From the Sector

Many end-users now expect recycled materials to be in textile products they purchase – and this is driving innovation throughout the industry. However, there are still many technical and economic issues facing yarn and fabric producers using recycled resources. Members of the Swiss Textile Machinery Association offer some effective solutions to these challenges.

Synthetic recycled materials such as PET can usually be treated similarly to new yarn, but there are additional complexities where natural fibres like wool and cotton are involved. Today, there’s a trend towards mechanically recycled wool and cotton fibres.

Spinning recycled cotton
The use of mechanically recycled fibres in spinning brings specific quality considerations: they have higher levels of short fibres and neps – and may often be colored, particularly if post-consumer material is used. It’s also true that recycled yarns have limitations in terms of fineness. The Uster Statistics 2023 edition features an extended range of fibre data, supporting sustainability goals, including benchmarks for blends of virgin and recycled cotton.
In general, short fibres such as those in recycled material can easily be handled by rotor spinning machines. For ring spinning, the shorter the fibres, the more difficult it is to guide them through the drafting zone to integrate them into the yarn body. Still, for wider yarn counts and higher yarn quality, the focus is now shifting to ring spinning. The presence of short fibres is a challenge, but Rieter offers solutions to address this issue.

Knitting recycled wool
For recycling, wool fibres undergo mechanical procedures such as shredding, cutting, and re-spinning, influencing the quality and characteristics of the resulting yarn. These operations remove the natural scales and variations in fibre length of the wool, causing a decrease in the overall strength and durability of the recycled yarn. This makes the yarn more prone to breakage, especially under the tension exerted during knitting.

Adapting to process recycled materials often requires adjustments to existing machinery. Knitting machines must be equipped with positive yarn suppliers to control fibre tension. Steiger engages in continuous testing of new yarns on the market, to check their suitability for processing on knitting machines. For satisfactory quality, the challenges intensify, with natural yarns requiring careful consideration and adaptation in the knitting processes.

From fibres to nonwovens
Nonwovens technology was born partly from the idea of recycling to reduce manufacturing costs and to process textile waste and previously unusable materials into fabric structures. Nonwovens production lines, where fibre webs are bonded mechanically, thermally or chemically, can easily process almost all mechanically and chemically recycled fibres.

Autefa Solutions offers nonwovens lines from a single source, enabling products such as liners, wipes, wadding and insulation to be produced in a true closed loop. Fibres are often used up to four times for one product.

Recycling: total strategy
Great services, technology and machines from members of Swiss Textile Machinery support the efforts of the circular economy to process recycled fibres. The machines incorporate the know-how of several decades, with the innovative power and quality standards in production and materials.
Stäubli’s global ESG (environmental, social & governance) strategy defines KPIs in the context of energy consumption, machine longevity and the recycling capacity in production units worldwide, as well in terms of machinery recyclability. The machine recyclability of automatic drawing in machines, weaving systems and jacquard machines ranges from 96 to 99%.

Green Theme Technologies (GTT), creators of the PFAS-free and water-free EMPEL® textile finishing platform, delivers advanced performance and a long term sustainability solution to the Japanese market. Green Theme Technologies, Inc. (GTT) is a US-based textile innovation company with a global vision to increase performance and eliminate pollution.

EMPEL® is a solution for textile mills looking to provide clean, high-performance finishes, and GTT actively promotes this innovative technology to all relevant Japanese companies, including mills, manufacturers, and brands. YKK, the Japanese global leader in zipper manufacturing, has already adopted the EMPEL® technology into their manufacturing process and promotes the technology globally in their new DynaPel™ collection.

GTT’s activities in Japan are supported by the Japan External Trade Organization (JETRO), a government-related organization that works to promote mutual trade and investment between Japan and the rest of the world. GTT has been approved for JETRO’s Invest Japan Support Program, which allows GTT to leverage its resources to set up an office in Japan in the future and for J-Bridge Program to forge relationships with prospective Japanese partners.

In January 2024, ERCA Textile Chemical Solutions TCS was launched as an independent entity within the ERCA Group.

The decision to make ERCA TCS a separate company stems from the desire to focus exclusively on solutions for the textile industry and to build an agile entity oriented towards responsible research and production, while continuing to leverage a solid productive and financial background from ERCA S.p.A.

ERCA TCS aims to be the unique and innovative point of reference for textile companies in terms of products and services specifically designed for the needs of a sector that is currently facing challenges and opportunities related to sustainability and responsible production.

ERCA TCS bases its activity on the principles of "green chemistry" to offer the textile industry chemical solutions that make concrete the concepts of safety, performance, and circularity. Its flagship product - REVECOL® - is born from critical waste materials (used vegetable oils) and present in abundance, which through a process attentive to environmental compatibility and safety, are transformed into a line of innovative, certified, high-performance chemical auxiliaries usable by the entire textile industry.

ERCA Group has six plants in three macro-regions: Europe, Latin America, and Asia and produces chemical specialties and auxiliaries with an approach of responsible innovation. Its production covers several markets: textile, cosmetics, polyurethanes, concrete. It has a turnover of 150 million euros and employs 350 people worldwide, 100 of whom are in the sole Grassobbio plant.

Solvay awarded a scholarship to facilitate an educational alliance between the Massachusetts Institute of Technology (MIT) and Fermi High School in Cecina. The initiative unfolded during an event held at Solvay's Rosignano site in Italy, providing a platform for students and faculty. Through this partnership, 200 Fermi High School students participated in STEM* and digital lessons from MIT's Global Teaching Labs project, emphasizing the teaching of scientific disciplines by the American university.

Beyond the scholarship award ceremony, students received a tour of Solvay's factory in Rosignano. The tour highlighted the company's dedication to safety, sustainability, and bridging the gap between academia and industry challenges. The experience illustrated the practical application of academic studies in an industrial context, showcasing Solvay's advanced control procedures, safety protocols, technological innovations, digital transformation efforts, and sustainability measures.

Discussions during the event included key sustainability topics such as water conservation, energy efficiency, waste management, and Solvay's commitment to promoting a balanced work-life culture and diversity within the workplace.

This collaboration aligns with Solvay's global Corporate Citizenship program. Through this program, Solvay supports individuals and communities, channeling efforts to tackle worldwide societal challenges through strategic investments in education, sustainability, and local community initiatives.

*STEM stands for science, technology, engineering and mathematics

Fibre Extrusion Technology Limited (FET) has been awarded £50,000 of grant funding to collaborate with the University of Manchester on complex spin pack and spinneret designs. This funding will provide FET with access to the expertise of four universities and the National Physical Laboratory to develop the next generation of machinery.

The grant is awarded by a consortium led by AMPI (The Advanced Machinery and Productivity Institute) and NPL (The National Physical Laboratory). AMPI’s Innovation for Machinery (I4M) programme supports businesses in West Yorkshire and Greater Manchester as part of an overall initiative to drive innovation for the UK’s advanced machinery manufacturers to meet the challenges of developing new technology and entering emerging markets.

In this project, FET will be working with the University of Manchester to conduct computational fluid dynamics (CFD) studies on a number of complex spin pack and spinneret designs. The aim of this work is to identify areas of improvement for FET’s spin packs and spinnerets and to use computer aided designs to develop significantly more efficient versions. The goal is that the research will improve the throughput of FET extrusion systems, thus reducing the amount of polymer lost through inefficient flow paths. This development, in turn, will reduce the environmental impact of synthetic polymer processing.

FET designs, develops, and manufactures extrusion equipment for a range of high value textile material applications worldwide. Established in 1998, FET’s major strength has always been to collaborate with customers in testing, evaluating and developing high value materials with diverse, functional properties. Efficiency and sustainability are key, so enhanced development of spinneret technology will contribute significantly to these objectives.

Lenzing Group announced the collaboration with China’s internationally recognized denim mill, Advance Denim, to use matte TENCEL™ Lyocell fibers for their latest Denim Collection.

The TENCEL™ brand offers innovative and planet-friendly fiber solutions¹ that strive to enhance the adoption of responsible production² within the textile industry. Leveraging resource-saving, closed-loop production process³, TENCEL™ fibers are naturally soft and smooth to the touch and support a natural dry feeling through moisture control. The rollout of matte TENCEL™ Lyocell fibers in 2021 provided denim manufacturers with a solution that enabled them to enjoy the ample tactile and environmental benefits of TENCEL™ fibers, while also maintaining a matte finish on the end product.

“Matte TENCEL™ fibers are an extremely important innovation for the denim sector as they address the need for responsible denim made with less shine for a more vintage look. Many brands are currently looking for styles that meet this criterion while also providing softness and drapability for wide-leg jeans. Matte TENCEL™ fibers create the perfect mixture of performance and sustainability without sacrificing that true vintage indigo look,” said Amy Wang, General Manager of Advance Denim. “The matte denim in the ‘Denim Collection’, achieved by using matte TENCEL™ fibers, not only has exceptional softness to the touch, but its fiber properties also make the denim more like traditional cotton jeans after washing. This will enable the final garments to retain the intended retro style of the fabric.”

¹ TENCEL™ Lyocell and Modal fibers are certified with the EU Ecolabel for textile products (license no. AT/016/001) for environmental excellence.
² The responsible production of TENCEL™ Lyocell and Modal fibers uses at least 50% less water and emits at least 50% less CO2 compared to generic lyocell and modal fibers, according to Higg MSI, thereby saving precious resources for future generations. Results based on LCA standards (ISO 14040/44) and available via Higg MSI (Version 3.7).
³ Savings consider solvent recovery.

Haelixa, a provider of physical traceability solutions, announceed the appointment of a new CEO, Patrick Strumpf, and the addition of Stefan Karlen to the Board of Directors. These positions shall mark a significant step in Haelixa’s mission to advance the growth of supply chain transparency solutions and drive positive change in the industry.

Patrick Strumpf joins Haelixa as its new CEO; he has over 20 years of experience building and scaling up businesses. Thanks to his strong entrepreneurial background, he has excelled in various manufacturing, distribution, and retail roles. Strumpf’s proven leadership, commercial acumen and strong customer focus will ensure the company keeps pushing its boundaries and attains even greater heights of success. “I am excited about the Haelixa traceability solution. It sets the highest standards and delivers outstanding advantages to brands and manufacturers who position themselves as innovation leaders, especially regarding compliance and credibility issues.”

Stefan Karlen joins Haelixa’s Board of Directors; he brings over 30 years of experience in the supply chain industry, having served as the Group CEO of Panalpina, one of the world’s leading freight forwarding and logistics companies. With his deep understanding of global supply chains and expertise in building solid teams, Karlen will provide valuable insights to Haelixa’s Board of Directors. His track record of driving innovation is instrumental in shaping the company’s strategic direction. “I am passionate about environmental responsibility and bringing positive change”, said Karlen. He added, “I identify with Haelixa’s values and am excited to leverage my skills to a company that prioritises sustainability and integrity.”

Archroma is showcasing its planet conscious innovations and solution systems at this year’s Colombiatex de Las Américas, being held from January 23 to 25, 2024.

Archroma is using its attendance at Colombiatex 2024 to introduce a new concept that promises to help the region’s brands and mills optimize their productivity, add value to their products and create a positive impact on the environment: Super Systems+.

The Super Systems+ solutions offer great performance, including end-product durability, while meeting sustainability targets with cleaner chemistries that comply with current and anticipated industry regulations or deliver resource savings, or both. Solutions are currently available for popular end-use segments, from denim to cotton and poly-cotton knits.

For black denim with a cleaner environmental footprint, brands and mills can choose DIRESUL® EVOLUTION BLACK to create unique shade and wash-down effects with an overall impact reduction of 57% compared to standard Sulfur Black 1 liquid.* For authentic blue denim, Archroma’s aniline-free** pre-reduced DENISOL® PURE INDIGO 30 LIQ produces coveted indigo colors with the same performance and efficiency as conventional indigo dye, but in a more planet-friendly way.

To embrace circularity and create natural shades on cellulosic-based fibers including cotton, kapok, linen and viscose, brand owners can now turn to Archroma’s patented EarthColors® technology. It makes high-performance biosynthetic dyes from non-edible natural waste, such as almond shells, bitter orange residues and cotton production byproducts, helping conserve natural resources. For next-generation processing of polyester and its blends, Archroma’s ERIOPON® E3-SAVE all-in-one auxiliary combines pre-scouring, dyeing and reduction clearing in a single bath to achieve substantial savings of water, energy and time.

For weather protection and stain resistance that is both economically and environmentally sustainable, Archroma Super Systems+ draw on an extensive portfolio of fluorine-free durable water repellents.

* Ecotarrae lifecycle analysis
** Below limits of detection according to industry standard test methods

The Lenzing Group has once again been recognized for its sustainability performance and its active contribution to transforming the industry towards a circular economy. The rating agency MSCI awarded Lenzing an “AA” rating for the third time in a row, placing Lenzing among the top eight percent of rated companies in its peer group. In addition, Lenzing participated for the first time in the SAC Higgs FEM verification to assess the environmental impact of product manufacturing at its sites and achieved positive results.

According to the rating agency MSCI, Lenzing continues to lead the way among global companies in terms of governance structures. In addition, MSCI highlights Lenzing’s leadership in implementing initiatives to mitigate the risk of environmental liabilities associated with the release of toxic pollutants and highlights its water stewardship program, which includes a water risk assessment. The confirmation of the “AA” rating from MSCI ESG enables Lenzing to further reduce its interest expense. In November 2019, Lenzing placed a bonded loan in the amount of around EUR 500 mn, which is linked to the company's sustainability performance. In line with its commitment under the bonded loan, the company will donate the entire interest expense it saves thanks to the “AA” rating to a social-ecological project.

By November 2023, all Lenzing sites, with the exception of the sites in Brazil and Thailand, which are however scheduled for 2024, have completed the first external verification of the module with excellent results. With almost 20,000 participating companies from different sectors of industry, which achieved less than 50 percent in total average in 2023, Lenzing sites achieved verified scores of more than 70 percent to 95 percent.

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.