From the Sector

Trützschler expanded their portfolio to become the first full-liner in the preparation of textile waste – from mechanical recycling to the spinning preparation of torn secondary fibers.

The TRUECYCLED solution is the result of their cooperation with the company Balkan Textile Machinery INC.CO. in Turkey, which they announced at the ITMA 2023 trade event in Milan. Since then, Trützschler has received many inquiries for recycling systems.

Success with a systems approach
Recycling systems face significant technological challenges. On average, torn fibers are much shorter than virgin fibers. The percentage share of short fibers in the fiber mass is much higher. Unopened yarn and fabric particles are also difficult to process. Not surprisingly, much academic and practical research is currently conducted to find solutions for these problems. Dr. Georg Stegschuster, a researcher specializing in textile recycling, believes a systems approach is needed. He is working at the Recycling atelier, a model factory for mechanical recycling in Augsburg, Germany, which is committed to delivering the latest technological insights for textile recycling. “A perfect fine-tuning between tearing and spinning preparation is key for obtaining the best possible quality results and avoiding unnecessary fiber shortening,” he says. “This can be achieved if you are in control of both processes – and have the necessary expertise for both processes too.”

Gentle but effective
In some cases, for example, it may be advantageous to have less aggressive settings in the tearing line. This can help avoid unnecessary fiber shortening. The remaining higher share of unopened fabric must then be handled in a high-performance spinning preparation line. This starts with the right blow room configuration for perfect opening, cleaning and blending. A card that is specially designed for recycling materials, such as the new TC 30Ri, can also enable gentle but effective treatment of fibers.

A shortened drafting process is also a must. The integrated draw frame IDF 3 can make this possible. The draft is high enough to provide excellent levelling of the numerous short fibers, but low enough to prevent floating fibers.

Full-liner in mechanical recycling and preparation of textile waste
Trützschler now offers a complete system covering the whole process, from cutting and tearing textile waste through to carding and drawing secondary fibers. Thanks to this holistic approach and Trützschler’s expertise for the whole process, manufacturers can avoid unnecessary fiber shortening.

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.

The programme committee is now accepting paper proposals for the Dornbirn GFC Global Fiber Congress 2024. They will be accepted through 15 February 2024

TOPICS
Fiber innovations
Is the core focus, including all applications like apparel, home, automotive, technical textiles etc. Nonwoven applications itself show very high innovative potential and will be part of this group. Natural fibers like cotton, wool and others will enrich the wholistic approach in the fibres space. Raw materials for the manmade fibre production like Pulp and upstream materials for synthetic fibers will extend this core pillar.
 
Circular Solutions & Recycling & Sustainability
Due to rising awareness of the climate change and the implementation of the “Green Deal”, “Sustainable Development Goals”, “ESG” and other, this pillar became enormously relevant over the years including:
sustainability in general for textiles and nonwovens, new and upcoming sorting- and separation technologies, mechanical recycling and chemical recycling and other ways forward.

Energy Solutions
As energy is becoming significantly important for the whole value chain in terms of costs and sustainability, there will be a strong focus on energy innovations at the next congress.  
 
Emerging Tech
Topics around Digitalization, AI, Transparency and Traceability will get high influence in the value chain and thus open up new approaches in innovation.

Indorama Ventures Public Company Limited (IVL) and Carbios, a biotech company developing and industrializing biological solutions to reinvent the life cycle of plastic and textiles, announce the signing of a non-binding Memorandum of Understanding (MOU) to form a Joint Venture for the construction of the world’s first PET biorecycling plant in France.  

Based on and subject to the comprehensive terms set out in the MOU, Indorama Ventures plans to mobilize about €110 million for the Joint Venture in equity and non-convertible loan financing , pending final engineering documentation and final economic feasibility studies. Both parties have acknowledged their mutual support for the implementation of the project and their intent to finalize contract documentation before end 2023.

Subject to the successful performance of this first plant in France, Indorama Ventures confirms its intention to potentially expand the technology to other PET sites for future developments.

Under the agreement signed June 1, Carbios, which filed for plant permitting in December 2022, should acquire 13ha land from Indorama Ventures’ existing PET plant at Longlaville and expects to be granted permits by Q3 2023, allowing start of construction by end of 2023 and targeted commissioning in 2025.  The land surface offers the possibility to double capacity. Pursuant to this MOU, Indorama Ventures shall ensure 100% of output repolymerization and both partners shall collaborate to secure feedstock supply.

The total capital investment for the new plant is re-estimated to be around €230 million, taking into account recent impact from inflation. Project costs shall be financed by the sums mobilized by Indorama Ventures, the French State and Grand-Est Region subsidies available for the project , and by equity capitalization of the Joint Venture by Carbios. Part of Carbios’ equity injection into the Joint Venture shall be financed by a portion of Carbios’ current cash position (i.e. €86 million as of 30 April 2023). Carbios is actively examining the best options to finance its remaining equity injection into the Joint Venture and will choose the most appropriate solution and timeline based on market conditions.

The project is part of Indorama Ventures’ Vision 2030 ambition to build on its leadership as a global sustainable chemical company. The company’s ESG commitments include spending $1.5 billion to increase its recycling capacity to 50 billion PET bottles per year by 2025 and 100 billion bottles per year by 2030. To meet these goals, Indorama Ventures, the world’s largest producer of recycled PET resin used in beverage bottles, is investing in new recycling technologies, including advanced recycling, in addition to expanding its global footprint of mechanical recycling sites, including two in France.

Carbios has developed a disruptive enzymatic depolymerization technology that enables efficient and solvent-free recycling of PET plastic and textile waste into virgin-like products with an aim to achieve true circularity. Carbios has ambitious plans to become a leading technology provider in advanced recycling of PET by 2035. After successful ongoing operations in its demonstration plant in Clermont-Ferrand in France, Carbios has been collaborating with Indorama Ventures for over a year to assess the commercial and technical feasibility of the technology. The world’s first industrial-scale enzymatic PET recycling plant at Longlaville will have a capacity to process about 50,000 tons of post-consumer PET waste per year, including waste that is not recyclable mechanically, equivalent to 2 billion PET colored bottles or 2.5 billion PET trays.

• Carbios has succeeded in producing a 100% enzymatically recycled white PET fiber from colored textile waste
• At the same time, the company has produced the first 100% recycled PET bottles, that have successfully passed the food contact validation tests, from the same textile waste.
• Carbios received €827,200 for the validation of this final technical stage of the project co-funded by ADEME

Carbios announced the validation of the 3^rd and final technical step of the CE-PET research project, co-funded by ADEME3 (France’s Environment and Energy Management Agency), for which Carbios is the lead partner alongside its academic partner TWB. This achievement confirms, once again, the full potential and breadth of Carbios’ enzymatic recycling process, C-ZYME™. This breakthrough innovation makes it possible to produce a wide variety of products of equivalent quality to those of petro-sourced origin from any PET waste, including textiles.
 
The first white PET fiber recycled enzymatically from colored textile waste
Worldwide, around 90 million tons of PET are produced each year, more than 2/3 of which are used to manufacture fibers. However, only 13% of textile waste is currently recycled, mainly for downcycling, i.e. for lower quality applications (such as padding, insulators or rags). By successfully manufacturing at pilot scale a white PET fiber that is 100% enzymatically recycled from colored textile waste, Carbios is paving the way for the circular economy in the textile industry.  C-ZYME™ is now on the doorstep of industrialization and will soon enable the biggest brands to move closer to their sustainability goals.
 
Emmanuel Ladent, Chief Executive Officer of Carbios: « Thanks to our breakthrough process, it will soon be possible to manufacture, on a large scale, t-shirts or bottles using polyester textile waste as raw material. This is a major breakthrough that gives value to waste that currently has little or no value. It is a concrete solution that opens up a global market of 60 million tons per year of potential raw materials and will help to reduce the use of fossil resources. »
 
Separate collection of textile waste soon to be mandatory in Europe
From 1 January 2025 the separate collection of textile waste, which is already in place in some countries, will be mandatory for all EU Member States (European Directive 2018/851 on waste).  Carbios’ process will enable this waste to be sustainably recovered and included in a true circular economy model.
 
These technological validations were carried out as part of the CE-PET research project, co-funded by ADEME3. In particular, the project aimed to develop Carbios’ enzymatic PET recycling process on textile waste. The C-ZYME™ technology is complementary to thermomechanical recycling and will make it possible to process plastic and textile waste deposits that are currently not or poorly recovered. For the validation of this stage of the project, Carbios received €827,200 (€206,800 in grants and €620,400 in repayable advances).