From the Sector

Breaking new ground in plastics recycling means assessing the value chain from end to end. The big opportunities for the future are in fine-tuning the individual process steps; from the collection of recyclable materials to the recycling process and the end product. This is where the cooperation of Lindner and the EREMA Group comes in, officially launched following the 50/50 founding of the holding BLUEONE Solutions in August 2023 to which shares of Lindner Washtech were contributed. The expertise of EREMA, a manufacturer of extruders and filtration solutions for plastics recycling and the largest company within the EREMA Group, has now been combined with the expert know-how from Lindner Washtech, a leading provider of all-in-one solutions for shredding, sorting and washing plastic feed materials.

Data transfer ensures more efficient recycling processes
Process control is an especially important aspect of plastics recycling, which is why standardising the process control system was what the two companies focused on first. "Together, we have developed a platform that allows data to be exchanged between the extruder and the washing system," says Manfred Hackl, CEO of the EREMA Group at IFAT in Munich. "This enables us to analyse the data more precisely so that effective improvement measures can be deduced." All key parameters are taken into account and monitored via a digital interface. For example, it is possible to use information relating to the current throughput of the EREMA Pre Conditioning Unit to optimise the washing process as soon as possible so that it can compensate for fluctuations in capacity and achieve a significant increase in output. This data transfer represents a new step on the roadmap to digitalization.

High efficiency due to smart energy management
"To ensure sustainable recycling, it is necessary to find the right process for each application and to make sure that the individual process steps are perfectly coordinated," emphasizes Michael Lackner, Managing Director of Lindner. Coordinating the process steps has already achieved initial success in energy management, and a clear example of this is heat recovery. "We use the latent heat generated during the extrusion process as an energy source for the washing and drying process," explains Lackner. "This enables our customers to sustainably reduce their energy costs and carbon emissions".

Making the most of synergies along the value chain
Synergies need to be used to establish the quality standards specified for each end application. "The key question is how we can improve the end product and increase the overall efficiency of the recycling process at the same time," agree Manfred Hackl and Michael Lackner. This will only work if companies work together along the value chain. The industry leaders can already point to several examples where together they have improved recycling processes and made it possible to move away from downcycling. "An example of this is the recycling loop of HDPE starting material, which is processed into high-quality, food-safe rHDPE pellets using our two technologies," says Lackner. Lindner Washtech and EREMA continue to work intensively together to develop strategies for upcycling plastics and increase recycling rates.

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%.

Partnership between Nouvelles Fibres Textiles, Pellenc ST and ANDRITZ promotes circular economy for textiles.

France’s first industrial plant for automated sorting and recycling of textile waste was officially inaugurated at Nouvelles Fibres Textiles, Amplepuis, on November 30, 2023. The plant is the result of an ambitious partnership between textile recycling company Nouvelles Fibres Textiles, waste sorting specialist Pellenc ST and international technology group ANDRITZ, a specialist in textile recycling machinery and processes.

Capable of automatically sorting garments by composition and color, the new line meets the needs of both post-consumer and post-industrial waste markets. The line also removes hard parts such as buttons and zippers to prepare the material for further processing in an ANDRITZ tearing machine.

The automated textile sorting line at Nouvelles Fibres Textiles is dedicated to industrial-scale production, customer trials and projects, and the R&D activities of the partners. It will process textile waste to produce recycled fibers for the spinning, nonwovens, and composites industries.

Automated sorting was the last missing link needed to develop a complete ecosystem in France, where the fashion industry, social and solidarity economy actors, waste management companies, and textile producers from different sectors are working together towards a textile circular economy.

The EU's strategy for sustainable and circular textiles aims to ensure that by 2030 textile products are made to a great extent of recycled fibers and incineration and landfilling of textiles are minimized.

Carbios inaugurated its textile preparation line at its demonstration plant in Clermont-Ferrand, in the presence of Mr. Lescure, French Minister for Industry. To streamline the textile preparation phase, which is currently carried out by hand or on several lines, Carbios has developed a fully integrated and automated line that transforms textile waste from used garments or cutting scraps into raw material suitable for depolymerization with its enzymatic biorecycling process. This patented line integrates all preparation stages (shredding and extraction of hard points such as buttons or fasteners), and provides Carbios with a high-performance, scalable development tool. The platform will help validate the biorecycling technology for textiles at demonstration plant scale (by 2024), and provides Carbios with expertise in working with collection and sorting operators to specify the quality of textiles and the preparation steps needed to make them suitable for enzymatic recycling. This expertise will also be invaluable to brands in the eco-design of their products.

Current collection, sorting and preparation infrastructures limit the amount of textile waste available for “fiber-to-fiber” recycling. Collection rates average around 15-25% worldwide^[1], and much of the waste collected is exported to Africa, Asia or Latin America for sorting.

Moreover, textiles are highly complex materials, with yarns of different composition (or nature) that are difficult, if not impossible, to physically separate. However, the highly selective enzyme developed by Carbios can specifically depolymerize the PET (polyester) present in textile material.

At present, textiles are sorted and prepared mainly by hand, with low yields, particularly for disruptors to recycling processes such as “hard points” (zips, buttons, etc.). To optimize this crucial phase, Carbios is contributing a textile preparation solution to accelerate the development of biorecycling in the textile industry. Enzymatic recycling, or biorecycling, therefore contributes to the construction of a textile recycling chain and the acceleration of textile circularity, also enabling brands to do away with used bottles.

^[1] Ellen MacArthur Foundation, 2017

The EU's planned ban on the entire group of per- and polyfluoroalkyl substances (PFAS) would endanger many industrial processes, states VDMA Textile Machinery. Textile manufacturing would be affected twice – by missing important chemicals for technical textile production and by the lack of indispensable textile machine components. The latter would affect the whole supply chain from textile machinery manufacturers and its suppliers to the textile industry in the EU.

Solid PFAS parts are widely used in textile machinery production, especially where extreme conditions prevail. Verena Thies, Managing Shareholder Thies GmbH & Co. KG, explains: “Our textile dyeing machines are world leaders and set standards in efficiency and sustainability. They work under pressure at temperatures of up to 140° C using highly acidic, highly basic and/or oxidative or even reductive chemicals. This is precisely why PFAS is needed, for example, in seals and rings, flaps as well as valves for a long-lasting and high-quality machine concept – because there are no alternatives with qualitatively equivalent properties. In addition, PTFE semi-finished products enable a sliding and gentle contact with the textile fabric in ecologically important techniques in the transformation of textile wet finishing."

PTFE and also FKM are fluoropolymers (fluoroplastics and fluoroelastomers), a group within the broad PFAS range of about 10,000 substances which would be banned for production, use and sale in the EU. They are high-tech materials, and as so-called "polymers of low concern" are not a danger to the environment, according to the OECD. Furthermore, these components are installed inside a machine and exchanged or disposed of properly. PFAS such as PTFE and FKM must be exempted from the ban, demands the VDMA in its position paper.

"In this way, the association also supports the approach taken in Great Britain. With the 10,000 substances, everything is lumped together, although the various PFAS groups are very different," warns Dr Sarah Brückner, Head of VDMA Environmental Affairs and Sustainability. "We should take our cue from the UK and look at the substance groups in a differentiated way."
Apart from several types of dyeing machines, PFAS components are indispensable in textile drying machines (e.g., conveyor dryers, tumblers and stenters) and damping machines. They are also used in fully automatic chemical dispensing systems and pressure vessels for thermochemical treatment of textile recycling material, heat recovery systems and wastewater treatment technology. This means that a lot of machines needed for a sustainable textile production would be affected by the PFAS ban.

VDMA Textile Machinery will take part in the ongoing EU public consultation. The association will describe indispensable key functionalities and conditions of use in the textile machinery sector as well as the consequences for the companies and the customers in the EU if the ban is imposed. The consultation ends on September 25, 2023, and VDMA urged its members affected by the planned restriction to participate in the consultation at an early stage. This is the only way to ensure that the broad scope of the mechanical and plant engineering sector is represented.

Following their entry into the fibres and textiles sector, as announced at K 2022, recycling machine manufacturer EREMA launches the INTAREMA® FibrePro:IV - which has been specially developed for PET fibre-to-fibre recycling - at ITMA in Milan from June 8 to 14. Thanks to its especially gentle material preparation and efficient removal of spinning oils, the rPET produced can be reused in proportions of up to 100 percent for the production of very fine fibres.

PET is regarded as a key material for the production of synthetic fibres. Around two thirds of the total volume of PET goes into the production of PET fibres for the textile industry. This highlights the importance of high-quality recycling solutions for the circular economy. By combining proven INTAREMA® technology with a new IV optimiser, EREMA succeeds in processing shredded PET fibre materials heavily contaminated by spinning oils in such a way that the finest fibres can be produced again from the recycled pellets. The system, which now joins EREMA's machine portfolio as the INTAREMA® FibrePro:IV, is characterised by a longer residence time of the PET melt. This is an essential factor for achieving high quality recycled pellets, as it allows the spinning oils and other additives used to improve the handling of the fibres during manufacturing to be removed more efficiently than in conventional PET recycling processes. Following extrusion, by polycondensation the intrinsic viscosity (IV) of the PET melt is increased in the new IV optimiser and under high vacuum to the precise level that is needed for fibre production. "Including filtration the output quality that we achieve with this recycling process is so high that ultra-fine fibres of up to 2 dtex can be produced using these rPET pellets, with an rPET content of 100 percent," says Markus Huber-Lindinger, Managing Director at EREMA. Waste PET fibre from production processes can therefore be further processed into rPET filament fibre, carpet yarn and staple fibre.

While the focus of the fibre and textiles application is currently still on PET fibre recycling, EREMA is committed to driving forward the recycling of mixed fibre materials from classic textile recycling collection in a next project phase. In order to accelerate development work, the EREMA Group opened its own fibre test centre, where a cross-company team is working on recycling solutions for fibre-to-fibre applications. The centre also operates a fully equipped and variable industrial-scale recycling plant. It includes the peripheral technology required and is available to customers for trials.

With regard to current and imminent requirements to strengthen and promote the recycling of garment waste in order to safe valuable textile fibre in the European but also worldwide textile economy DiloGroup announces the start of a close cooperation between Dilo, Germany and the Italian companies Dell’Orco & Villani and TechnoPlants. This cooperation forms a group of expertise to supply complete projects in the area of textile recycling.

Dell’Orco & Villani is a long term highly experienced and innovative specialist in the field of tearing equipment to recycle textile garment clippings. This technology maintains as much as possible the staple length of reopened fibre from yarn in knitted and woven textiles. This special tearing process avoids the downgrading and shortening of the staple.

TechnoPlants is a highly experienced specialist in the field of aerodynamic web forming and through air technology with particular emphasis on reclaimed fibre for various applications as for example in acoustic and thermal insulation, car parts, upholstery and bedding.

DiloGroup with DiloSystems GmbH is a general contractor who is specialized in the area of fibre preparation, carding, cross-lapping and needling who will act as a turnkey general provider of complete projects including Dell’Orco & Villani components to reclaim wasted fibre as well as TechnoPlants components when aerodynamic web forming is included or when carding, cross-lapping is selected together with through-air ovens and end-of-line equipment including packaging from TechnoPlants.

The expertise of the three companies together is a source for the complete know-how in this large area of applications to reuse fibre from textile waste in new nonwoven material.

With the beginning of upcoming ITMA 23, more details of the organizational structure of this cooperation among the three companies will be released and project engineering will be started.

ITMF has invited some of the start-ups that have presented at the ITMF Annual Conference 2023 to share in more depth during a series of interactive webinars their digital platforms/tools and how companies can benefit from digital workflows. The first webinar with the start-up “ColorDigital” took place in the first half of February. The second webinar will take place in March with the start-up “Frontier.Cool”.

In cooperation with the “Institut für Textiltechnik” (Institute for Textile Technology) of RWTH Aachen University, ITMF has developed a series of webinars that will have a closer look at the concept, political and legal environment as well as technology regarding circularity and recycling in the textile industry. In six webinars of 60-75 minutes each, international experts will discuss the backgrounds and potential of circularity in the textile industry. The webinar series start in March and will be completed by the end of May 2023.

The webinars are free of charge for ITMF members and all their affiliated members.  

Please check the Textination schedule for all details.

Art meets sustainable fashion in the third edition of the project "CirculART", the initiative that sees companies, artists and fashion designers working together with Cittadellarte - Fondazione Pistoletto, showing how new balanced forms of production, design and sharing can be explored through a careful choice of materials and of sustainable supply chains. Three key concepts underpin the circularity of sustainable fashion and therefore this project: Reduce - reducing the consumption of raw materials, Reuse - reuse of raw materials, Recycling - regeneration.

The project CirculART is conceived and developed in collaboration between Fashion B.E.S.T. and UNIDEE Residency Programs, and led by the Foundation's team of curators.

Fashion B.E.S.T. - Better Ethical Sustainable Think-Tank, Cittadellarte - Fondazione Pistoletto’ sustainable fashion office, was created by artist Michelangelo Pistoletto and Franca Sozzani. Since 2009, B.E.S.T. has been working on the development of sustainability in the textile sector, to lead to a contamination between art, which assumes social responsibility, and the world of fashion, which is looking to define a new ethical and sustainable model.

CirculART proposes a new link between fashion and art, engaging both in a conscious and innovative combination of sustainability, sensitivity, beauty and union. The project links territory and production factories, bringing together actors from the different sectors making up the textile supply chain that work on the basis of a circular economy with companies that have chosen to embrace the ideal of sustainability and develop an innovative business model.

The protagonists of this year’s edition are two international artists and two international fashion designers, selected through an open call launched by Cittadellarte: Augustina Bottoni, Lucia Chain, Huge Sillytoe and Rebecca Sforzani, young talents called upon to create a work with fabrics produced by partner companies, focusing on dialogue and on the enhancement of the textile industry production chain.

In early 2023, the programme will give the four selected artists the opportunity to visit and work actively with the partner companies that have joined the initiative.
These are: Achille Pinto S.p.a, manufacturer of textiles and textile accessories for the main international fashion brands; Albini Group, Europe's largest manufacturer of cotton fabrics for shirts; Erica Industria Tessile, a leading company in the creation of textile prints, original and customised designs; Filatura Astro, eco-sustainable regenerated yarns; G2B S.r.l., a chemical and environmental analysis laboratory working with vertical cultivation from which indigo is obtained; Lampo by Ditta Giovanni Lanfranchi S.p.A., leader in the creation and production of zips for fashion; Lanificio Fratelli Cerruti, a Biella-based weaver for haute couture; Lenzing, world leader in the production of fabrics made from fibres derived from renewable wood raw material; Milior, a producer of high quality fabrics; Officina +39 – Chemistry plus creativity, a chemical company with thirty years' experience dedicated to research and chemical application in textiles; Tessuti di Sondrio, a factory inspired by the century-old local textile tradition of processing cotton, linen, hemp and wool; Tintoria Emiliana, garment-dyed production and sustainable practices; Zegna Baruffa Lane Borgosesia, a manufacturer of 100% Made in Italy fine combed and carded yarns.

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.