From the Sector

OCSiAl, a leader in graphene nanotube technologies, has been granted a construction permit for a nanotube production facility near Belgrade, Serbia. The new nanotube synthesis plant will be launched in 2024 and will have an initial annual capacity of 60 tonnes of graphene nanotubes. Over the next two years, the capacity of this plant will be increased to 120 tonnes per year. “The project will facilitate logistics and lower supply chain costs. European-produced nanotubes and nanotube derivatives will be primarily supplied to our customers in central and western Europe, North America, and Asia,” said OCSiAl Group Senior Vice President Gregory Gurevich.
 
In addition to synthesizing nanotubes, the facility will manufacture nanotube suspensions for lithium-ion battery manufacturers in Europe, the US, and Asia – enough to enhance the performance of more than 1 mln electric cars with an average battery capacity of 75 kWh per car. OCSiAl nanotubes create long and robust electrical networks between active material particles, improving key battery characteristics, including cycle life, lower DCR, C-rate performance, and cohesion between active battery material particles, making the battery electrodes more durable. Graphene nanotubes unlock new battery technologies, including high-silicon content anodes, thick LFP cathodes, fast-charging graphite anodes, and more. They can be applied in both conventional and emerging battery tech, such as a dry battery electrode coating process, and solid-state batteries.
 
As well as synthesizing nanotubes and producing suspensions, OCSiAl project includes manufacturing of nanotube concentrates for high-performance polymers. The project has passed environmental impact assessment and it is 100% powered by green energy. It enjoys support from Serbian municipal and national governments. The plant is planned to be certified in accordance with ISO 9001, ISO 14001, and ISO 45001, and to be compliant with the IATF 16949 automotive industry standard. The project will create more than 200 job opportunities for engineers, scientists, managers, operators, and administrative staff.
 
Currently, OCSiAl has an extensive manufacturing system of nanotube-based products in the regions of highest market demand, such as China, Japan, Sri Lanka, Brazil, Malaysia, and other countries. The Serbia nanotube hub will operate in conjunction with the company’s operational R&D center and planned graphene nanotube synthesis facility in Luxembourg.

TRÜTZSCHLER Spinning presents an innovation for the textile machinery market: the high-performance comber TCO 21XL with 12 combing heads. For many decades, eight combing heads has been considered state-of-the-art in the spinning industry. Now, Trützschler’s advanced technology and engineering proves that it is possible to build a heavy-duty comber that maximizes productivity by 50 % and saves space without compromising on quality.

They say two heads are better than one, so just imagine what 12 heads can do! That’s the simple but effective idea behind the TCO 21XL. Increasing the number of combing heads by 50 % makes it possible to increase productivity by 50 %, enabling rates of up to 150 kg/h. As a result, two TCO 21XL combers offer the same production capacity as three conventional combers. And that means companies that buy and operate two machines instead of three can achieve significant benefits in terms of their price-performance-ratio (cost/kg). The costs of running the machines are broken down into 12 instead of eight heads, making the machine more cost-effective over its entire operating life.

50 % higher productivity is great – and it can be even greater if the machine is operated with JUMBO cans. The can changer needs to keep up with the extra performance, and JUMBO cans can easily collect the additional output of the TCO 21XL because they feature a 1200 mm diameter. This makes it possible to minimize non-productive time when changing cans. Anybody who is planning a new spinning mill knows that every square meter of space adds to the overall costs. The new TCO 21XL comber offers huge benefits in this regard because 25 % less floor space is required to operate same number of combing heads. This reduces the initial building costs, while also decreasing operating costs related to lighting, air conditioning and other overheads.

SHIMA SEIKI MFG., LTD. of Wakayama, Japan, together with its Korean subsidiary SHIMA SEIKI KOREA INC., will participate in the Preview in SEOUL exhibition in Seoul, Republic of Korea this month (23rd - 25th of August 2023).

SHIMA SEIKI will show its SWG061N2 compact WHOLEGARMENT® knitting machine which can produce a wide range of WHOLEGARMENT® items in their entirety without the need for linking or sewing. The SWG-N2 series “Mini” range is suited to the production of small knit items and accessories such as gloves, socks, hats and scarves as well as cozies, shoe uppers, bags, card cases, glasses cases, smartphone covers and other personal items. The N.SVR093SP is a conventional shaped knitting machine featuring a loop presser bed that yields novel fabrics with special inlay patterns that are produced by inserting yarn into knit fabric in a weave fashion, offering new and exciting possibilities in hybrid knit-weave textiles. Both machines will be shown knitting such items as bags and sporting goods to demonstrate the capability of current knitting technology for producing non-apparel items.

SDS®-ONE APEX design system and APEXFiz® subscription-based design software will also be on display. Both support the creative side of fashion from planning and design to colorway evaluation, realistic fabric simulation and 3D virtual sampling. Virtual samples are a digitized version of sample making that are accurate enough to be used effectively as prototypes, replacing physical sampling and consequently reducing time, cost and material that otherwise go to waste. Virtual samples can furthermore be used in e-commerce to gauge consumer demand before production begins. Feeding that information back to production and combined with on-demand WHOLEGARMENT® knitting technology, production can be adjusted to optimize inventory and minimize leftover waste. APEXFiz® thereby helps to realize sustainability and digitally transform the fashion supply chain.

UK’s Optima 3D is delivering its weaving technology to the USA, for installation at the University of Maine’s Advanced Structures and Composites Center (ASCC).

The 3D weaving system consists of an Optima 3D Series 600 shuttle weaving machine with an integrated 2,688-hook Stäubli SX jacquard and harness. It is also complemented by Optima’s compact warp delivery creel and an associated pirn winder for shuttle bobbins and a spool winder for creel spools.

Optima’s looms offer many advanced features over conventional weaving machines, particularly in terms of versatility, as a result of the comprehensive use of digital control systems allowing rapid parameter and sequence changes, coupled with an innovative shuttle system.

The ASCC is certainly no stranger to advanced technology, or indeed ambitious composite projects – in 2019 it received no less than three Guinness World Records, for the world’s largest prototype polymer 3D printer, the largest solid 3D-printed object, and the largest 3D-printed boat. In its latest project it has further introduced BioHome3D – the first 3D-printed house made entirely with bio-based materials developed in a partnership with Oak Ridge National Laboratory. The 182-square-metre prototype features 3D-printed floors, walls and roof which are fully recyclable and highly insulated with 100% wood insulation and customisable R-values. Construction waste was nearly eliminated due to the precision of the printing process.

Archroma, a leader in specialty chemicals towards sustainable solutions, and Somelos, a vertically integrated textile group in Portugal, have joined forces to advance sustainable cotton processing with a new water-saving dyeing and finishing process that generates no wastewater.

Conventional cotton dyeing and finishing requires substantial water and chemical inputs and produces a large volume of wastewater. Long-lasting wash-down effects in particular, traditionally require two water-intensive processes: one to get the color intensity and one to achieve the washed-down contrast. Relying on such resource-intensive processes is of particular concern in nations affected by drought and water scarcity, like Portugal, the home of Somelos since its founding in 1958.

To address this challenge, Archroma and Somelos have now developed the New Dry Dyeing/Ox Finishing process for the production of bottoms and shirting in cotton fabrics. Based on Archroma’s Pad-Ox dyeing process, which combines oxidation and fixation into one step, and the latest technologies for washdown effects, including ozone and laser treatments, it delivers water savings of up to 97% compared to conventional cotton dyeing and finishing.

The New Dry Dyeing/Ox Finishing process only uses water to prepare the dye and oxidation baths. Archroma Diresul® RDT liquid pre-reduced sulfur dyes ensure easy washdown and direct fixation—with no need for pre-washing—delivering shorter processing, cleaner production and high wash -fastness.

Archroma, a leader in specialty chemicals towards sustainable solutions, is teaming up with COLOURizd™, an innovator specializing in sustainable textile dyeing technologies, to set a new standard for the eco-friendlier production of sustainable textiles.

The new collaboration will enable fabric mills and brands to combine Archroma pigment coloration solutions with the COLOURizd™ QuantumCOLOUR™ yarn-coloring technology to produce high-quality, high-performance textiles with maximum consumer appeal and minimal environmental impact.

Conventional fiber-reactive methods of dyeing cellulosic and synthetic yarns are multi-step resource-intensive processes that use up to 95 liters of water per kilograms of colored yarn and discharge approximately 94 liters of effluent.

In contrast, the innovative QuantumCOLOUR™ process injects pigment and a binder directly into the yarn, using only 0.95 liters of water per kilograms of colored yarn while producing zero effluent. This represents an unprecedented reduction of 98% in water consumption alongside zero wastewater discharge, zero discharge of harmful chemicals, 73% decrease in carbon footprint and 50% reduction in energy use.*

With Archroma, textile manufacturers and apparel brands can add further value to the QuantumCOLOUR™ process with tailor-made system solutions, including JUST COLOR. This formaldehyde-free** pigment coloration system is based on Archroma’s revolutionary Printofix® pigment dispersions and Helizarin® binders to deliver exceptionally soft fabrics with high fastness and durability, while also enabling energy and chemical savings and higher productivity.

* As tested by Peterson Control Union
** Below limits of detection according to industry standard test methods

Trevira CS is exhibiting for the first time at CSI Miami (Cruise Ship Interiors Design Expo Americas). Taking place on 6 – 7 June, 2023 at the Miami Beach Convention Center, CSI will bring together buyers and suppliers involved in cruise ship interiors, including interior designers, architects, outfitters, shipyards and suppliers.
 
On the Trevira CS stand, visitors can get an idea of the wide range of flame retardant fabrics suitable for use on board cruise ships. 53 fabrics from 20 Trevira CS customers will be on display that either have IMO certification and/or have been tested to the fire safety standards (FTP Code) required in the marine sector. Trevira CS fabrics are inherently flame retardant, meaning that their flame retardant properties cannot be washed out or lost through aging or use. This is due to the chemical structure of the polyester fiber: the flame retardant properties are firmly anchored in the fiber and cannot be altered by external influences. A surface-applied flame retardant finish is therefore not necessary.

In the marine sector, the demands placed on textiles are not only high in terms of fire protection, but also with regards to light resistance and durability. This is particularly true for textiles used in outdoor applications. These must be extremely robust, as they are exposed to moisture and sunlight. To meet these requirements, Trevira CS has launched a range of 30 new spun-dyed, UV-stable filament yarns. Besides color depth and durability, spun-dyed yarns offer another advantage: They are more sustainable because the fabrics made from them can be produced in a more environmentally friendly way than textiles that are dyed in one piece or consist of brightly colored yarns. In fabric production, a large share of resource consumption goes to the dyeing and finishing of fabrics as well as the use of chemicals and water. However, with spun-dyed yarns, these processing steps are unnecessary – the yarn immediately comes out of the spinneret in the desired color, reducing the products’ environmental impact.

The topic of sustainability is also taken up in other Trevira CS products. For example, Trevira CS fabrics are available in recycled versions. They consist of fiber and filament yarns obtained in different recycling processes. Filament yarns are produced using recycled PET bottles, they contain 50% post-consumer recycled material. Recycled fibers are obtained using an agglomeration plant and in further processing steps from residual pre-consumer waste from production. They consist of 100% recycled material (pre-consumer recycling). All flame retardant recycled Trevira® products are GRS (Global Recycled Standard) certified.
Fabrics made from these yarns are marked with the Trevira CS eco trademark. The prerequisite for this is a recycled content of at least 50%. Among the fabrics presented at the Trevira CS trade fair stand are 8 fabrics bearing the Trevira CS eco brand.

The long-term goal in developing sustainable products is undoubtedly to enter a circular economy. For this new path, an innovative Trevira CS product development was launched, producing flame retardant fibers and filament yarns from chemically recycled raw material. In this case, the basic raw material for the chemical recycling was PET bottles, but essentially it could be most any other PET recyclables, such as packaging material or even textiles. Chemical recycling involves depolymerization, a sequence of chemical reactions in which the polymer chains are broken down again into their original components, i. e. the monomers. In a further processing step, impurities are removed. Before the polymerization process is initiated, a small amount of MEG (mono ethylene glycol) is added.

The same technology used to produce the original (virgin) raw material for Trevira CS is also used here. The flame retardant modification is added during polymerization. In this way, the flame retardant properties are indelibly anchored in the polymer.

By recycling valuable materials such as packaging material, waste can be avoided. The raw material obtained from the recycling process is comparable to the original material can be used again in high-quality products.

ERCA, Patagonia® and YKK announce the implementation of ERCA’s REVECOL®, a sustainable, innovative chemical agent, in YKK’s dyeing processes at their Vietnam production sites transforms common waste material, such as exhausted vegetable cooking oil, into an upcycled, certified high performance, safe textile chemical. ERCA has invested in circular practices to take waste material and use them as feedstocks to create new responsible chemical products.

Always searching for new sustainable innovations, REVECOL® caught the attention of Patagonia®. Driven by the goal to utilize non-extractive chemistry in their supply chain wherever possible, the brand teamed up with ERCA and trim supplier YKK to deploy REVECOL®.

REVECOL® LV-TS has a carbon footprint that is 72% lower* than the more conventional chemical auxiliaries produced by ERCA. Today ERCA produces a wide range of high-performance chemical auxiliaries made from used vegetable oil that are ZDHC, bluesign® approved and GRS certified.

ERCA is one of the first companies to have GRS certified chemical products, opening the door to circular chemical auxiliaries.

As part of their Sustainability Vision 2050, YKK is constantly working to deploy more sustainable chemical processes in their production. The ability to replace a commonly used dye chemical with a lower impact version was a no-brainer for YKK’s Vietnam management. REVECOL® is not only more sustainable, it is also more efficient, reducing the use of the dyeing auxiliary by 20% to 30%, thus  helping to lower YKK’s overall chemical usage.

* bluesign® Product Carbon Footprint Report

B.I.G. Yarns unveils its new “SustainableYarns” platform, with Clerkenwell Design Week visitors the first to be invited to get on board and focus on what matters most for the design and manufacture of sustainable soft floorings.

The expert in polyamide (PA) 1 step 3 ply yarns offers a range of options for manufacturers to introduce sustainable yarns into carpet solutions and reach sustainability targets faster and more efficiently.

The Sustainable Yarns range creates opportunities to design with recycled content yarn (EqoCycle), to work with renewable resources (EqoBalance), and, following the launch of new polyamide 6 (PA6) EqoYarn at Clerkenwell Design Week, to also leverage the low-impact value chain.

New addition EqoYarn is a new low-impact PA6 carpet yarn based on the most recent innovations in polymer production, which enable yarn manufacturers to lower their carbon footprint by nearly 50% and give carpet manufacturers more options to reduce their impact.

For its EqoYarn Bulk Continuous Filament (BCF) production process, B.I.G. Yarns has selected the few best-in-class partners that have made major steps forward in terms of sustainability, and reduced their greenhouse gas emissions thanks to continuous investments in process efficiency, green energy, heat optimization and waste reduction. The result is EqoYarn with a carbon footprint of 4 kg CO2 eq/kg yarns, which is a CO2 reduction of up to 50% compared to conventional PA yarns.

EqoBalance PA6 yarns enable customers to reach an even higher CO2 reduction of up to 75%. Manufactured with polymers made from renewable resources such as organic waste from cooking oil instead of virgin or fossil feedstock, these yarns have a carbon footprint of 1.98 kg CO2 eq./ kg yarns. They help carpet manufacturers to create products with an extremely low carbon footprint.

EqoCycle PA6 yarns are fully recyclable and incorporate 75% recycled content originating from recycled and regenerated PA6 granules. With a carbon footprint of 4.64 kg CO2 eq./ kg yarns, they deliver the same high-quality performance of virgin PA6 yarn with the benefit of 37% CO2 reduction. EqoCycle yarns offer carpet manufacturers a sustainable alternative to help reduce the ecological footprint of their products and move towards a circular economy without jeopardizing the end-product quality.

In addition to the different CO2-reducing options, B.I.G. Yarns’ customers can access an unlimited colour range to elevate their designs. Its BCF technology for polyamide yarns, twisted and heat-set yarns, one-colour to multi-colour, between 650 and 15000 dTex, along with its colour studio, are available to support their creation of customised collections.

• Carbios has developed an ultra-high throughput microfluidic screening of PET-depolymerizing enzymes in partnership with the Paul Pascal Research Center^[1], a joint research unit of the CNRS^[2] and the University of Bordeaux
• Microfluidics enables millions of enzymes to be screened in a day, compared with a few thousand a week with conventional technologies
• Future polymers of interest will benefit from this acceleration of the R&D phase, enabling Carbios to develop its portfolio of innovations on different types of plastic more rapidly

Carbios has accelerated its enzyme screening process with a microfluidic technology developed in partnership with the Paul Pascal Research Centre (a joint research unit of the CNRS and the University of Bordeaux, which specializes in microfluidics). This technology enables the screening of millions of enzymes in just one day, speeding up the process to optimize enzymes breaking down PET. This competitive advantage enables Carbios to reduce the time between the R&D phase and the production of its proprietary enzymes, and therefore to develop concrete solutions to plastic pollution even faster.

Microfluidics
Microfluidics allows the production of devices handling very small amounts of liquid. Each droplet generated can be considered as an independent microreactor having a volume in the picoliter range (10-12 liters) and containing a particular enzyme whose PET depolymerization activity will be screened. These droplets move through analysis units the size of a microchip allowing ultra-high throughput screening of 150 enzymes per second.

Previously, conventional robotic systems allowed screening in microplate format with a volume in the milliliter range (10-3 liters) and with rates of around one enzyme per minute.

The use of microfluidics to screen for more efficient or new enzymes will become widely adopted in the coming years, therefore accelerating the development of bioprocessing. Currently used by Carbios for the development of its PET depolymerization process, microfluidics should be used to accelerate the development of new enzymes for other types of plastic such as polyamide.

Carbios researchers specialized in microfluidics
Microfluidic processes require special expertise. At present, two researchers at Carbios are dedicated to microfluidics and based in the cooperative laboratory with TBI^[3] hosted by INSA^[4] Toulouse.  Alexandra Tauzin, Researcher in Enzyme Engineering and Microfluidics, and Alexandre Gilles, Engineer specialized in robotics, work in partnership with the Paul Pascal Research Center.

^[1] Centre de Recherche Paul Pascal (CRPP)
^[2] Centre National de la Recherche Scientifique (CNRS) = National Center for Scientific Research
^[3] Toulouse Biotechnology Institute
^[4] National Institute of Applied Sciences