From the Sector

The German Institutes of Textile and Fiber Research Denkendorf (DITF) have modernized and expanded their melt spinning pilot plant with support from the State of Baden-Württemberg. The new facility enables research into new spinning processes, fiber functionalization and sustainable fibers made from biodegradable and bio-based polymers.

In the field of melt spinning, the DITF are working on several pioneering research areas, for example the development of various fibers for medical implants or fibers made from polylactide, a sustainable bio-based polyester. Other focal points include the development of flame-retardant polyamides and their processing into fibers for carpet and automotive applications as well as the development of carbon fibers from melt-spun precursors. The development of a bio-based alternative to petroleum-based polyethylene terephthalate (PET) fibers into polyethylene furanoate (PEF) fibers is also new. Bicomponent spinning technology, in which the fibers can be produced from two different components, plays a particularly important role, too.

Since polyamide (PA) and many other polymers were developed more than 85 years ago, various melt-spun fibers have revolutionized the textile world. In the field of technical textiles, they can have on a variety of functions: depending on their exact composition, they can for example be electrically conductive or luminescent. They can also show antimicrobial properties and be flame-retardant. They are suitable for lightweight construction, for medical applications or for insulating buildings.

In order to protect the environment and resources, the use of bio-based fibers will be increased in the future with a special focus on easy-to-recycle fibers. To this end, the DITF are conducting research into sustainable polyamides, polyesters and polyolefins as well as many other polymers. Many 'classic', that is, petroleum-based polymers cannot or only insufficiently be broken down into their components or recycled directly after use. An important goal of new research work is therefore to further establish systematic recycling methods to produce fibers of the highest possible quality.

For these forward-looking tasks, a bicomponent spinning plant from Oerlikon Neumag was set up and commissioned on an industrial scale at the DITF in January. The BCF process (bulk continuous filaments) allows special bundling, bulking and processing of the (multifilament) fibers. This process enables the large-scale synthesis of carpet yarns as well as staple fiber production, a unique feature in a public research institute. The system is supplemented by a so-called spinline rheometer. This allows a range of measurement-specific chemical and physical data to be recorded online and inline, which will contribute to a better understanding of fiber formation. In addition, a new compounder will be used for the development of functionalized polymers and for the energy-saving thermomechanical recycling of textile waste.

Borealis is commemorating its thirtieth year of operations. Born of a merger between Statoil and Neste, Borealis has expanded from its early Nordic roots to become one of the top polyolefins players. Its dedication to value creation through innovation has produced proprietary and transformative technologies which benefit society and accelerate the transition to a circular economy. The company is regularly ranked as Austria's top innovator in the European Patent Index and holds an extensive patent portfolio of around 8,900 granted patents. In Europe in particular, Borealis has for decades bolstered the industrial landscape by investing in its capital assets, and by providing thousands of jobs.

Innovations
Borealis uses technological innovation to add value to polyolefin-based applications, ensure that production processes are made more resource efficient, and to accelerate plastics circularity. Borstar®, the multi-modal proprietary technology for the manufacture of polyethylene (PE) and polypropylene (PP), has been a mainstay of Borealis success since the start-up of the first Borstar PE plant in Porvoo, Finland in 1995. Borstar has since been joined by other technology brands, like Borlink™, an innovation for the power cable industry; Borstar® Nextension Technology, an innovation that among other benefits facilitates the production of monomaterial applications designed for recycling; or the Borcycle™ M technology for mechanical recycling, which breathes new life into polyolefin-based, post-consumer waste, transforming it into applications with a lower carbon footprint.

Global Expansion
With the strong support of its two majority shareholders OMV (Austria) and The Abu Dhabi National Oil Company (ADNOC, UAE), Borealis continues to expand its global footprint. The joint venture Borouge, established in 1998 in the UAE, and listed on the Abu Dhabi Securities Exchange (ADX) since 2022, is one of the largest integrated polyolefin complexes. It is currently the site of the company’s largest-ever growth project: Borouge 4, the new USD 6.2 billion facility in Ruwais, which will serve customers in the Middle East and Asia. In North America, the Baystar™ joint venture, founded in 2017 and operated with partner TotalEnergies, entailed the construction of a new ethane cracker as well as the most advanced Borstar plant ever built outside of Europe. The PE Borstar 3G plant in Pasadena, Texas was started up in late 2023 and has brought Borstar to this continent for the first time. Borealis’ commitment to Europe as a production location is evidenced by the new, world-scale propane dehydrogenation (PDH) plant currently under construction at Borealis operations in Kallo, Belgium.

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.

Messe Frankfurt will extend its footprint in the Central Asian market by establishing seven brand events in Tashkent, Uzbekistan. The country’s strategic location as a crossroads of Europe and Asia positions it as a promising trade gateway and transportation hub, facilitating the economic development of neighbouring countries and access to the wider region. The company’s stronger presence in the market will promote business opportunities and foster the sustainable development of pillar industries, including cosmetics, textiles and clothing, automotive, logistics and transportation.

Uzbekistan has a promising consumer market with significant potential. It is the largest in Central Asia and is expected to increase due to population growth, rising incomes and the modernisation of economic and industry sectors.
 
The nation has actively sought to diversify its economy in recent years, undertaking reforms for greater entrepreneurial freedom and opening up to more international and regional cooperation. The country already exports precious metals, textiles and agricultural produce. It imports machinery, equipment, means of transportation, and vehicle components from foreign trading partners. Attracting overseas investment is also apparent through incentives such as tax benefits, reduced import duties and simplified procedures for overseas investors.
 
In addition, shifting global supply chains and trading patterns could also drive opportunities in the region. The nation benefits from its geographical location owing to its position between Asia and Europe, to which the Uzbek Government recognises the prospects of investing in infrastructure, such as transportation and logistics, to create an efficient transit hub. Against this backdrop, China acknowledges the importance of developing routes along the Belt and Road while Europe has expressed a readiness to support Uzbekistan’s efforts to diversify transport corridors.

Line-up of shows include:

• Automechanika Tashkent; Futuroad Expo Tashkent; and, Scalex Tashkent: 23 – 25 October 2024
• Heimtextil Uzbekistan; Texworld Tashkent; and, Apparel Sourcing Tashkent: 6 – 8 November 2024
• Beautyworld Central Asia: 21 – 23 November 2024

The European Chemicals Agency (ECHA) has published its Strategy Statement 2024-2028. The strategy details the agency’s goals and priorities over the next five years to protect health and the environment through its work for chemical safety.

Main elements of the Strategy – Goals and Priorities

Be a trusted chemicals agency – ECHA aims to achieve this by delivering its legal mandate using independent expertise and robust data. The Agency, to support this, will:

• Deliver transparent, independent, and high-quality scientific advice, opinions, and decisions;
• Enhance decision and policy making through optimal use of data, knowledge, and competence; and
• Facilitate the prioritisation and co-ordination of regulatory actions on substances and groups of substances with the European Commission (EC), EU agencies and Member State Authorities.

 
Respond to emerging challenges and changes in their legal landscape – ECHA will prepare for new tasks and inform EU chemical and environmental policy. To support this goal, it will focus on the following priorities:

• Implement new legal requirements using existing and new synergies and experience;
• Work with relevant EU agencies and bodies to deliver Chemical Strategy for Sustainability (CSS) actions and objectives; and
• Provide scientific and technical advice on chemicals to EU policy makers.

 
Communicate and Engage – by collaborating with stakeholders and partners, ECHA will strengthen public confidence in chemicals regulation. In support of this goal, the Agency will:

• Deepen their network of engagement with EU institutions and agencies and Member States;
• Collaborate and provide tools, advice, and support to industry; and
• Promote awareness and understanding of ECHA's work to stakeholders representing workers, the public and the environment.

 
Lead on chemical knowledge and expertise – the Agency will advance knowledge and understanding on chemical safety. To achieve this, it will:

• Contribute proactively to expanding scientific and technical competence and knowledge on chemical safety;
• Promote the development and use of alternative methods for the assessment of hazards and risks of chemicals; and
• Support the EC to enhance engagement and synergies at international level.

 
Invest in people and organisational excellence – ECHA is committed to working together to achieve their vision. In order to achieve this they will:

• Develop and empower their people for success;
• Create optimal ways of working for the Agency, its bodies, its people, and the environment; and
• Adopt an IT delivery model that is cost-effective, streamlined, modular, interoperable, cloud based and centralised.

ECHA CHEM is a new solution for publishing information on chemicals. The first release, available now, includes information from all REACH registrations.

ECHA’s current Information on chemicals platform, launched in 2016, grew rapidly and contains today information on over 360 000 chemicals. In 2022, ECHA announced that it would create a new system for publishing chemicals data. ECHA CHEM allows the Agency to better handle the growing diversity and quantity of data, while taking advantage of technological advancements.

ECHA maintains the largest chemicals database in the European Union (EU), combining industry-submitted data with information generated in the EU’s regulatory processes. ECHA CHEM is the new solution to share with the public the growing amount of information hosted by the Agency.

In the first version of ECHA CHEM, the information from all the over 100 000 REACH registrations are included that companies have submitted to ECHA. Later this year, the database will be expanded with the redesigned Classification and Labelling Inventory, followed by the first set of regulatory lists.

The European Chemicals Agency (ECHA) has added five new chemicals to the Candidate List. One of them is toxic for reproduction, three are very persistent and very bioaccumulative and one is toxic for reproduction and persistent, bioaccumulative and toxic. They are found in products such as inks and toners, adhesives and sealants and washing and cleaning products.

The Agency has also updated the existing Candidate List entry for dibutyl phthalate to include its endocrine disrupting properties for the environment.

ECHA’s Member State Committee has confirmed the addition of these substances to the Candidate List. The list now contains 240 entries – some are groups of chemicals so the overall number of impacted chemicals is higher.

From Resource-efficient and Recycled Fibres for Textiles and Building Panels to Geotextiles for Glacier Protection: Six award nominees present innovative and sustainable solutions for various industries in the cellulose fibre value chain. The full economic potential of the cellulose fibre industry will be introduced to a wide audience that will vote for the winners in Cologne (Germany), and online.

Again nova-Institute grants the “Cellulose Fibre Innovation of the Year” award in the context of the “Cellulose Fibres Conference”, that will take place in Cologne on 13 and 14 March 2024. In advance, the conferences advisory board nominated six remarkable products, including cellulose fibres from textile waste and straw, a novel technology for dying cellulose-based textiles and a construction panel as well as geotextiles. The innovations will be presented by the companies on the first day of the event. All conference participants can vote for one of the six nominees and the top three winners will be honoured with the “Cellulose Fibre Innovation of the Year” award. The Innovation award is sponsored by GIG Karasek (AT).

In addition, the ever-growing sectors of cellulose-based nonwovens, packaging and hygiene products offer conference participants insights beyond the horizon of traditional textile applications. Sustainability and other topics such as fibre-to-fibre recycling and alternative fibre sources are the key topics of the Cellulose Fibres Conference, held in Cologne, Germany, on 13 and 14 March 2024 and online. The conference will showcase the most successful cellulose-based solutions currently on the market or those planned for the near future.

The nominees:

The Straw Flexi-Dress: Design Meets Sustainability – DITF & VRETENA (DE)
The Flexi-Dress design was inspired by the natural golden colour and silky touch of HighPerCell® (HPC) filaments based on unbleached straw pulp. These cellulose filaments are produced using environmentally friendly spinning technology in a closed-loop production process. The design decisions focused on the emotional connection and attachment to the HPC material to create a local and circular fashion product. The Flexi-Dress is designed as a versatile knitted garment – from work to street – that can be worn as a dress, but can also be split into two pieces – used separately as a top and a straight skirt. The top can also be worn with the V-neck front or back. The HPC textile knit structure was considered important for comfort and emotional properties.

HONEXT® Board FR-B (B-s1, d0) – Flame-retardant Board made From Upcycled Fibre Waste From the Paper Industry – Honext Material (ES)
HONEXT® FR-B board (B-s1, d0) is a flame-retardant board made from 100 % upcycled industrial waste fibres from the paper industry. Thanks to innovations in biotechnology, paper sludge is upcycled – the previously “worthless” residue from paper making – to create a fully recyclable material, all without the use of resins. This lightweight and easy-to-handle board boasts high mechanical performance and stability, along with low thermal conductivity, making it perfect for various applications in all interior environments where fire safety is a priority. The material is non-toxic, with no added VOCs, ensuring safety for both people and the planet. A sustainable and healthy material for the built environment, it achieves Cradle-to-Cradle Certified GOLD, and Material Health CertificateTM Gold Level version 4.0 with a carbon-negative footprint. Additionally, it is verified in the Product Environmental Footprint.

LENZING™ Cellulosic Fibres for Glacier Protection – Lenzing (AT)
Glaciers are now facing an unprecedented threat from global warming. Synthetic fibre-based geotextiles, while effective in slowing down glacier melt, create a new environmental challenge: microplastics contaminating glacial environments. The use of such materials contradicts the very purpose of glacier protection, as it exacerbates an already critical environmental problem. Recognizing this problem, the innovative use of cellulosic LENZING™ fibres presents a pioneering solution. The Institute of Ecology, at the University of Innsbruck, together with Lenzing and other partners made first trials in 2022 by covering small test fields with LENZING™ fibre-based geotextiles. The results were promising, confirming the effectiveness of this approach in slowing glacier melt without leaving behind microplastic.

The RENU Jacket – Advanced Recycling for Cellulosic Textiles – Pangaia (UK) & Evrnu (US)
PANGAIA LAB was born out of a dream to reduce barriers between people and the breakthrough innovations in material science. In 2023, PANGAIA LAB launched the RENU Jacket, a limited edition product made from 100% Nucycl® – a technology that recycles cellulosic textiles by breaking them down to their molecular building blocks, and reforming them into new fibres. This process produces a result that is 100% recycled and 100% recyclable when returned to the correct waste stream – maintaining the strength of the fibre so it doesn’t need to be blended with virgin material.
Through collaboration with Evrnu, the PANGAIA team created the world’s first 100% chemically recycled denim jacket, replacing a material traditionally made from 100% virgin cotton. By incorporating Nucycl® into this iconic fabric construction, dyed with natural indigo, the teams have demonstrated that it’s possible to replace ubiquitous materials with this innovation.

Textiles Made from Easy-to-dye Biocelsol – VTT Technical Research Centre of Finland (FI)
One third of the textile industry’s wastewater is generated in dyeing and one fifth in finishing. But the use of chemically modified Biocelsol fibres reduces waste water. The knitted fabric is made from viscose and Biocelsol fibres and is only dyed after knitting. This gives the Biocelsol fibres a darker shade, using the same amount of dye and no salt in dyeing process. In addition, an interesting visual effect can be achieved. Moreover, less dye is needed for the darker colour tone in the finished textile and the possibility to use the salt-free dyeing is more environmentally friendly.
These special properties of man-made cellulosic fibres will reassert the fibres as a replacement for the existing fossil-based fibres, thus filling the demand for more environmentally friendly dyeing-solutions in the textile industry. The functionalised Biocelsol fibres were made in Finnish Academy FinnCERES project and are produced by wet spinning technique from the cellulose dope containing low amounts of 3-allyloxy-2-hydroxypropyl substituents. The functionality formed is permanent and has been shown to significantly improve the dyeability of the fibres. In addition, the functionalisation of Biocelsol fibres reduces the cost of textile finishing and dyeing as well as the effluent load.

A New Generation of Bio-based and Resource-efficient Fibre – TreeToTextile (SE)
TreeToTextile has developed a unique, sustainable and resource efficient fibre that doesn't exist on the market today. It has a natural dry feel similar to cotton and a semi-dull sheen and high drape like viscose. It is based on cellulose and has the potential to complement or replace cotton, viscose and polyester as a single fibre or in blends, depending on the application.
TreeToTextile Technology™ has a low demand for chemicals, energy and water. According to a third party verified LCA, the TreeToTextile fibre has a climate impact of 0.6 kg CO2 eq/kilo fibre. The fibre is made from bio-based and traceable resources and is biodegradable.

Carbon fiber-reinforced polymer lamellas are an innovative method of reinforcing buildings. There are still many unanswered questions regarding their recycling, however. A research project by Empa's Mechanical Systems Engineering lab is now set to provide answers. Thanks to the support from a foundation, the project could now be launched.

The construction sector is responsible for around 60 percent of Switzerland's annual waste. The industry's efforts to recycle demolition materials are steadily increasing. Nevertheless, there are still end-of-life materials that, for the time being, cannot be reused as recycling would be too time-consuming and expensive. One of these are carbon fiber-reinforced polymer (CFRP) lamellas.

Making buildings "live" longer
The reinforcing method developed by Urs Meier, former Empa Director at Dübendorf, has been used in infrastructure construction for 30 years. CFRP lamellas are attached with epoxy adhesive to bridges, parking garages, building walls and ceilings made of concrete or masonry. As a result, the structures can be used for 20 to 30 years longer. The method is increasingly being applied worldwide – mainly because it massively improves the earthquake resistance of masonry buildings.

"By significantly extending the lifespan of buildings and infrastructure, CFRP lamellas make an important contribution to increasing sustainability in the construction sector. However, we need to find a way how we can further use CFRP lamellas after the buildings are being demolished," explains Giovanni Terrasi, Head of the Mechanical Systems Engineering lab at Empa. To achieve this, he wants to develop a method for recycling CFRP lamellas. Convinced by this idea, a foundation supported it with a generous donation. The project officially launched in October.

Gentle separation
First, a mechanical process will be developed to detach the CFRP lamellas from the concrete without damaging them. Initial tests at Empa are encouraging: After the lamellas were separated from the concrete, they still had a strength of 95 percent – even if they had already been used for 30 years.

Then, the demolished CFRP lamellas shall be used to produce reinforcement for prefabricated components. Terrasi's goal: saving thousands of tons of CFRP lamellas from ending up in landfills after the demolition of old concrete structures and reuse them in low-CO₂ concrete elements. After completion of the project, Giovanni Terrasi and his team – consisting of Zafeirios Triantafyllidis, Valentin Ott, Mateusz Wyrzykowski and Daniel Völki – want to produce railroad sleepers from recycled concrete, which will be reinforced and prestressed with demolition CFRP lamellas. This would give the "waste-to-be" material a second life in Swiss infrastructure construction.

Toray Industries, Inc. announced the successful development of recycled carbon fiber (rCF) derived from the production process of the Boeing 787 components using Toray’s advanced carbon fiber, TORAYCA™. The rCF, which is based on pyrolysis recycling process, has been integrated into the Lenovo ThinkPad X1 Carbon Gen 12 as reinforcement filler for thermoplastic pellets. Toray and Lenovo will continue to collaborate to expand the usage of rCF in other Lenovo products.

Toray rCF is the outcome of Boeing and Lenovo’s shared commitment to minimize their environmental impact. Boeing’s objective is to reduce solid waste going to landfill and produce recyclable materials, while Lenovo has been exploring materials to reduce the carbon footprint of their products. Toray rCF connects these visions by repurposing Toray’s high-performance carbon fiber from the Boeing aircraft production process into Lenovo’s ultra-light laptop PC.

TORAYCA™ is an established aerospace material known for its high strength, stiffness, and lightweighting properties. These qualities have led to its adoption in other applications such as electrical and electronic equipment housings, sports equipment, and other industrial applications.

A key advantage of carbon fiber is the ability to retain its primary mechanical properties even after the recycling process. Toray is actively advancing recycling technologies and establishing a strategic business model for rCF. Given that the carbon footprint of rCF is lower than that of virgin carbon fiber, Toray is proactively recommending the adoption of rCF to reduce the environmental impact of customers’ products. This commitment aligns with Toray’s dedication to fostering a circular economy, thereby reducing landfill waste.