From the Sector

Flexibility, product uniformity and automation are the keys to success for coating businesses in today’s rapidly-changing technical textiles industry, explained Jürgen Hanel, Monforts Head of Technical Textiles, at the recent 1st World Congress on Textile Coating.

Introducing the latest Montex®Coat magnetic roller coating option to virtual delegates from around the world at the conference organised by International Newsletters, Hanel explained why this technology makes perfect sense now

“The magnetic roller system allows a wide range of coatings and finishes to be carried out, while being easy to handle for operators and much easier to clean at the end of the process,” he said. “It provides textile finishers with an expanded range of options due to the fully-adjustable positioning of the magnet within the roller and with four different magnet positions possible, can be set to operate both as a direct coating system and as an indirect coater.”

With traditional dip coating systems, he added, as well as with many standard knife coating technologies, there is always a difference in the tension between the centre and the edges of the wide width fabrics being treated – and hence the amount of pressure with which the coating is applied. With the use of a magnetic roller, equal pressure is applied across the full width of the fabric, with consistent results even at wide widths of over 2.4 metres. In addition, adjusting the roller surface, rather than changing the coating formulation to match the required add-on and viscosity for each coating effect required, leads to much higher output from the line.

Cleaner and less wasteful
The contribution of such flexible and resource-saving new technologies to a cleaner and less wasteful textile industry was a key theme at the congress – held virtually across the four afternoons of February 11th, 12th, 18th and 19th – as was digitalization and the many advantages it is providing.

“A typical integrated Monforts coating line is automated from the inlet feed to the winder,” Hanel told delegates. “Adjustments can also be made simply and easily from the touchscreen and with the new hand-held remote controller which has recently been introduced for the Montex®Coat unit.”

Manual adjustment, he added, is time consuming and needs the attention of an experienced operator or the reproducibility will not be accurate between coating operations. The adjustment by motors allows each coating to be stored and downloaded again for 100% reproducibility.

The motors can be fully controlled from the touchscreen and all necessary adjustments carried out remotely, making switching from one process to another extremely quick and easy.
The accuracy that is now being demanded by today’s most exacting customers is met with an optional carbon fibre roller – especially in dealing with the winding tension required in the processing of materials such as prepregs for composites and other heavyweight fabrics. Typical applications for the Montex®Coat include the finishing of tents and awnings, black-out roller blinds and sail cloth, automotive interior fabrics and medical disposables. Full PVC coatings, pigment dyeing or minimal application surface and low penetration treatments can all be accommodated.

“The World Congress on Textile Coating was characterised by some very stimulating presentations and forums between the speakers and a global audience of textile specialists,” Jürgen Hanel concluded. “It truly reflected the high level of positive changes now taking place in not just textile coating, but the entire textile industry. I look forward to the next edition, which hopefully will be a face-to-face event for even deeper level discussions and debate.”

Tonello and RUDOLF HUB1922 join forces and unveil laser effects. The results: A much simplified, flexible and efficient process - based on latest technological advancements and highly conscious chemistry - that is finally able to replace questionable practices such as potassium permanganate spray.

THE Laser, the absolute Laser
The range that is the new benchmark for the entire sector. New software and a totally reinvented process that return higher precision, speed, flexibility and repeatability. Four models for a specific crafting and avant-garde functions like 360° marking technology, BOP for automatic drawing positioning and the new software CREA make THE Laser suitable and unique for advanced applications.

Laser Smoother (RUCO-SPECIAL LSM)
All-in-one formulation - very easy to pre-apply to garments before laser burning - that translates into a very natural image that is similar to what is created by hand. RUCO SPECIAL LSM amplifies the laser action, completely removes the grey/brow patina produced by the burning of cotton and last but not least, creates a micro-unevenness that simulates manual scraping and celebrates the fabric construction.

The combination of THE Laser and RUCO-SPECIAL LSM (ideally applied through CORE system) is a process that nothing adds to the usual way of working. It is a radical paradigm shift that takes the product directly to a dimension of real, highly sustainable craftsmanship:

• Remarkable enhancement of the fabric’s characteristics;
• Overall effect much more natural and similar to manual scraping;
• A better and more efficient way of working.

Hexcel announces its latest HexPly® XF surface technology that reduces shell manufacturing time within the wind blade surface finishing process. HexPly XF increases overall blade manufacturing efficiency by reducing time in the mold by up to two hours and by banishing surface defects that require rework before painting.

Hexcel’s HexPly XF surface technology has been formulated to address the limitations of current blade shell surfacing techniques whereby pinholes and other surface defects have to be repaired by hand to achieve the perfectly smooth surface required for painting.

HexPly XF surface technology introduces a new material format as the surface finishing layer, eliminating the need for a traditional in-mold gel coating process. HexPly® XF for infused rotor blades, is a lightweight non-woven semi-preg construction, comprising an epoxy resin matrix, that co-cures with standard epoxy infusion systems. The product has a successful track record in prepreg blades and has now been adapted for infusion processes.

Easy to handle and supplied in a ready to use roll form, HexPly XF can be quickly applied by hand or with semi-automated layup equipment. It features one self-adhesive, surface finishing side - indicated by a removable protective foil. This side of the prepreg is placed against a release agent treated mold surface. Once the material has been positioned, the lay-up of the blade shell structure can start immediately, and the laminate can be infused. After curing, the blade is de-molded with the manufacturer benefitting from a pinhole-free surface that needs minimal preparation before painting.

HexPly XF material is less than half the weight of a typical gel coat per square meter, reducing the overall weight of the blade. Additionally, the consistent areal weight and thickness of the prepreg film provide a completely uniform surface coating, ensuring blade weight distribution and balance are maintained, which is critical as rotor diameters continue to increase. With no need to handle or mix liquid chemicals as in the gel coat process, HexPly® XF also improves the health and safety working conditions on the shop floor.

The material has a shelf life of six weeks at ambient temperature, which also minimizes cold storage requirements and helps to reduce scrap.

Sicomin announces its latest collaboration with GREENBOATS® as they deliver the first ever natural fibre composite (NFC) nacelle for an offshore wind turbine.  

With more than 2.5 million tons of composite materials in use in the wind industry globally, and the first generation of wind turbines now approaching end of life, there is still a lack of well-established recycling options. GREENBOATS’ mission is to demonstrate how large-scale NFC structures in wind energy can lower energy consumption in manufacturing and significantly improve the sustainability of the composite materials used in the turbine.

In 2020, GREENBOATS was commissioned by a leading wind energy technology developer to design and manufacture a sustainable NFC nacelle. The resulting 7.3m long structure has a surface area of approximately 100m2 and was engineered by GREENBOATS to satisfy all DNV-GL load cases required for an offshore turbine nacelle, including 200km/h max wind loads and 2KN loads on the guard rails.

Sicomin’s market leading GreenPoxy® range met these challenging engineering requirements, with the company’s recently expanded manufacturing capability also matching the potential supply volumes required by wind turbine manufacturers.  

Sicomin’s DNV-GL type approved bio-based epoxy was used to infuse BComp flax fibre reinforcements and balsa cores, with Sicomins’ intumescent weatherproof gelcoat applied on the outer surface. Cured panels were cut to shape, formed over a male plug and bonded together, before flax reinforcement plies, hand laminated with GreenPoxy resins and vacuum bagged, were added along all the panel joints lines.  Finally, Sicomin’s highly UV resistant clear coating products were used to protect and enhance the finish of the flax fibre feature stripe details.

Royal DSM announces that its DSM Engineering Materials business will launch mass-balanced bio-based Arnitel®, a thermoplastic elastomer, together with Sympatex Technologies. In this way, DSM Engineering Materials is taking the next step on its sustainability journey and enabling its customers to transition to a more circular and bio-based economy.

To address growing consumer and legislative demand for lower carbon footprint and more sustainable feedstock, the sports and apparel value chain is increasingly integrating bio-based materials into its designs. By offering a new range of mass-balanced bio-based Arnitel®, DSM Engineering Materials is enabling membrane manufacturer, Sympatex Technologies to meet these demands and make more sustainable choices.

DSM’s bio-based Arnitel® is manufactured with bio-based feedstock using a mass-balance approach¹. The end product contains more than 25% bio-based content by weight.

Sympatex uses Arnitel® to manufacture its waterproof, windproof, and breathable membranes for sports applications. The transition to bio-based feedstock will maintain the unique functional properties of Arnitel® and will enable Sympatex to easily shift to a more sustainable solution with a lower carbon footprint without having to requalify materials.

¹ Mass balance accounting is a well-known approach that has been designed to trace the flow of materials through a complex value chain. The mass balance approach provides a set of rules for how to allocate the bio-based and/or recycled content to different products to be able to claim and market the content as ‘bio’-based or ‘recycled’-based. Source: Ellen MacArthur Foundation (Mass Balance White Paper).

Reinach, Switzerland, and Westlake, Ohio, 2 February 2021 - Archroma, a global leader in specialty chemicals towards sustainable solutions, today announced a strategic partnership with technology innovator CleanKore, aiming to advance sustainable dyeing processes throughout the denim supply chain.

The agreement will allow Archroma and CleanKore to promote the benefits of each other’s technologies. This includes Archroma’s robust catalog of dyes and specialty chemicals along with CleanKore’s patented process of dyeing yarns at the denim mill that completely eliminates the need for potassium permanganate (PP) spray and laser booster to achieve the bright white abrasion effect in the garment finishing process. The result is a large and circular bright white core with a small ring of indigo dye. The technology does not just eliminate the chemicals associated in the PP spray and laser process, which is much safer for denim workers, it also allows to save significant amounts of water and energy throughout the manufacturing process from fabric to garmenting.

CleanKore initially looked at eliminating potassium permanganate due to its being classified as hazardous if inhaled or ingested, or in case of contact with the skin or the eye. It is also considered very toxic to aquatic life. No new equipment or capital expenses are needed to implement the CleanKore technology, which works on all denim fabric, including dark indigo, sulfur top/bottom and sulfur black.

This is where Archroma comes into the picture. Its global technical team of denim coloration specialists will provide support to denim mills seeking to implement the CleanKore technology and develop the desired looks and effects - with the right colors and chemical systems for their production set-up.

CleanKore estimates that the technology allows to save up to 15 liters of water per garment, or the equivalent to the drinking needs of 5 people per day, and up to 0.51 kWh of energy per garment, or the equivalent of five 100-watt light bulbs on for 1 hour. The CleanKore technology also leads to a 10% to 20% increase in production throughput, as a result of a faster garment wash-down and the elimination of PP spray.

For CleanKore CEO Darryl Costin Jr., the announcement comes at an ideal time for CleanKore: "We have successfully proven the technology with mill partners such as Arvind and other denim mills in Pakistan, Bangladesh, China, Vietnam, Thailand and the United States. The response from the industry has been overwhelmingly positive. Having a partner in Archroma, one that is highly respected for their innovation and emphasis on sustainability throughout the industry, will allow us to take CleanKore to the next level.”

Umberto Devita, Global Indigo Manager at the Archroma Global Competence Center for Denim & Casualwear, adds: "CleanKore is perfectly aligned with the 3 pillars of 'The Archroma Way to a Sustainable World: Safe, efficient, enhanced'. 'Safe' through the elimination of a potentially harmful substance and the protection of the denim workers, 'Efficient' through the reduction of resource consumption, improved productivity and cost-effective profile. And 'Enhanced' through the gorgeous colors and effects allowed with Archroma's innovations and systems, in particular our aniline-free* Denisol® Pure Indigo and Diresul® sulfur dyes. We look forward to help promoting an innovation that will help with many of the challenges facing our denim customers throughout the world. Because it’s our nature."

Hexcel is pleased to announce Type Approval Certification of its HexPly® M9 prepreg materials by DNV GL. The addition of the HexPly M9 prepreg range to Hexcel’s already comprehensive DNV GL certified portfolio provides ship and boat builders with optimal prepreg processing options.

HexPly M9 prepregs enable short cure cycles at 100˚C and above and provide a balance between ease of processing and mechanical performance. Available in high tack and medium tack variants, HexPly M9 prepregs are available with a wide range of unidirectional, woven, and multiaxial reinforcements. Partnered with Hexcel’s own HexTow® IMC2 and HexTow® HM54 / HM63 fibers, designers and engineers can optimize highly loaded composite structures such as masts, wing sails, and foils with increased glass transition temperatures (Tg) and excellent long-term fatigue performance.
 
Hexcel has completed the DNV GL certification for HexPly M9 in response to the rapidly increasing demand for type-approved high-performance prepreg materials for large composite structures in the commercial marine craft.  

Hexcel’s collaboration with Chantiers de l’Atlantique on its new Silenseas cruise ship concept – a concept that uses composite Solid Sail® propulsion as well as dual-fuel engines to reduce emissions and operating costs – is one such application. In this case, DNV GL type approval provides third-party assurance of the product’s quality, performance and consistency, and also helps to streamline the approval of composite parts that replace traditionally metallic structures.

Hexcel has supplied advanced composite materials to the marine industry for more than 40 years and manufactures a comprehensive range of DNV GL certified products including woven reinforcements, multiaxial fabrics, prepregs, and adhesive films. Hexcel is committed to developing new composite technologies for the marine sector, helping builders evolve their designs to produce lighter, more fuel-efficient, and a sustainable craft for the future.

“Our latest Type Approval Certification is an important part of our strategy to provide the most complete package of DNV GL certified composite materials for the marine sector,” said Andreas Sageder, Product Manager at Hexcel. “With the addition of our M9 prepreg resin systems, mast, ship, and boat builders have an expanded range of processing and cure options available for parts requiring higher Tg and improved fatigue performance.”

Sorpol Ltd., a leading importer and distributor of industrial raw materials in Israel, has launched a website to sell Acteev Protect™ masks, made in the USA by polyamide manufacturer Ascend Performance Materials. The two companies also plan to partner in the distribution of Acteev surgical masks, N95 respirators, nonwoven media and textile fabrics as they become available.

Laboratory tests have demonstrated Acteev fabric effective at deactivating 99.9% of the viruses SARS-CoV-2, the cause of COVID-19, and H1N1, a flu virus. Acteev technology also eliminates bacteria and fungi.

Ofer Soreq, Sorpol’s marketing director, said the Acteev Protect line fits in neatly with the mission of the company.

Recent testing on Acteev fabric completed at the University of Cambridge has demonstrated that Acteev technology deactivates the virus that causes COVID-19, SARS-CoV-2, with 99.9% efficacy on contact. Ascend has submitted several masks designs to the U.S. Environmental Protection Agency and the U.S. Food and Drug Administration to obtain the appropriate regulatory clearances to make specific claims regarding the technology’s antiviral properties in the United States.

In addition to antiviral, antifungal and antibacterial protection, the washable, reusable masks are lightweight, breathable and odor-fighting, making them comfortable to wear during a long shift at work or for outdoor workouts.

Acteev Protect shows promise for use beyond masks, according to Ascend. The technology was originally developed for workout wear, and now the company is working on textile applications ranging from gloves to scrubs to high-end athleisure

• World Congress on Textile Coating, to take place on 11-12 & 18-19 February 2021.

The conference organisers have developed a well-structured programme of five sessions over four days with live discussion forums following each session for maximum attendee participation.

“The programme aims to be inspiring and informative, and will showcase the best innovations and collaborative actions in the industry. Functionality can be added to textiles and nonwovens at the beginning or the end of the supply chain, with an increasing range of raw materials, offering many options when designing and realizing a high-performance fabric. At the other end, there are many ways, such as applying a coating, to add functionality to an otherwise finished product. For example, the current pandemic has prompted new commercial anti-viral processes and four such presentations will outline the impact on industry and its response to the global pandemic,” says Dr Nick Butler, head of the conference organising committee.

World Congress on Textile Coating will feature time dedicated to networking, encouraging attendees to interact with conference speakers and industry peers throughout the online programme, offering the opportunity to expand professional networks. All the presentations and discussion forums will be recorded for post-event viewing. Event sponsors imogo AB, Lamberti SpA, JX Nippon ANCI and Weitmann & Konrad GmbH & Co. KG will give individual presentations and host Q&A during the four days of the event.

For the full programme, speakers and abstracts please visit https://www.technical-textiles.online/WCTC.

• The Bavarian Kelheim Fibres GmbH has become the first viscose fibre manufacturer worldwide to receive EMAS certification.

“Our aspiration is that our fibres offer an eco-friendly and high-performance alternative to synthetic materials”, says Craig Barker, CEO at Kelheim Fibres. “So, it’s not enough that our fibres are made from renewable resources and that they are fully biodegradable – our environmental awareness must include the whole production process and all that goes with it if we want to safeguard our credibility.

The EMAS certification proves that we take this responsibility seriously.” EMAS stands for “Eco Management and Audit Scheme” and is a standardised eco management certification system developed by the European Union. EMAS includes the globally applicable ISO 14001 standard and goes beyond its requirements by demanding more transparency and continuous improvement: Certified companies report in their annual EMAS Environmental Statement on their environmental goals and their progress in meeting them.

During the audit preceding the certification, the independent environmental auditor thoroughly investigated all departments of the company, from the production itself to the company canteen. He found no non-conformances and was impressed by the competence and the high sense of responsibility among Kelheim’s employees. In contrast to the EU Ecolabel and similar certifications, EMAS does not apply to individual products or services, but certifies the complete environmental performance of the company. This benefits not only the protection of the environment and climate, but also the improvement of a company’s ecoefficiency.

Craig Barker: “An efficient environmental management system ensures that economy and ecology go hand in hand – that gives us a decisive competitive edge.”