From the Sector

• Standard assesses fibre release, biodegradation and ecotoxicity for the first time

Testing service provider Hohenstein has worked with the project partners Trigema, Freudenberg, DBL ITEX and Paradies to create a new standardized test method for detecting and classifying the environmental effects of textiles during washing. DIN SPEC 4872 combines analysis of fibre release, biodegradability and ecotoxicity. The test method according to DIN SPEC 4872 shows how many fibres are released during textile laundering, how well these fibres degrade in wastewater and how harmful the fibre residues are to the environment.

Studies have shown that washing textiles releases microfibres into the wash water, which cannot be sufficiently retained by wastewater treatment plants. Synthetic fibres pose the greatest risk to the environment because of their longevity and inability to biodegrade. However, Hohenstein project manager Juliane Alberts does not give the all-clear for biodegradable fibres and natural fibres: "Biodegradability alone does not mean that pure natural fibres, for example, are completely harmless to the environment. They, too, remain in ecosystems until they completely degrade and can also have a negative impact. In addition, additives, auxiliaries or finishes used in textile production can further slow the degradation process and leach into the environment."

The new standard enables textile producers and suppliers to test, evaluate and compare products for fibre release during washing and environmental impact. Juliane Alberts sees this systematic evaluation as an opportunity for the textile industry to take the initiative on environmental impact: "Our reliable data can be used as a basis for more targeted product development. This is a way to actively and consciously control further environmental pollution."

Svegea of Sweden – a member of TMAS, the Swedish Textile Machinery Association – has recently installed an EC300-S collarette cutter for the high speed production of tubular apparel components as well as an FA350 automatic roll slitter at the plant of Löffler, in Ried im Innkreis, Austria.

The EC 300-S collarette cutter is equipped with the computer-controlled True-Drive II and high pre-feed device, which is used by garment manufacturers around the world for the production of tubular apparel components such as cuff and neck tapes and other seam reinforcements. It operates at speeds of up to 20,000 metres per hour. The integrated, fully automatic FA350 roll slitter FA500 roll slitter is equipped with three separately adjustable settings enabling three different band widths to be cut within the same cutting cycle. Automatic tube sewing units are provided for sewn tubes in optional rolled or flat folded forms, depending on customer preference.

Sports and knitwear specialist Löffler is celebrating its 50th anniversary in 2023. Its plant in Ried houses 25 circular knitting machines and three seamless knitting machines with an annual output of around 905,000 square metres of fabric, and in addition to product development, design, cutting and some sewing are all carried out in-house.

Löffler is known for its transtex under garments, which ushered in the two-layer principle of structures combining hydrophobic polypropylene and other fibres like cotton, Modal, Tencel or merino wool.

Before transtex, endurance athletes usually wore pure cotton underwear next to their skin, which became wet over time and cooled the body down. Löffler’s two-layer fabric prevented this, since the polypropylene does not absorb moisture and instead wicks it to the outside, where it can evaporate to keep the skin dry.

Innovation has been ongoing ever since, and in December, Löffler received an ISPO Award 2022 for transtex Retr’x – its latest functional underwear made from recycled polypropylene from textile waste and a combination of recycled and GOTS-certified organic cotton. Transtex Retr’x is neither dyed or bleached and is Standard 100 by Oeko-Tex as well as Made In Green by Oeko-Tex approved.

In addition to its own branded products, the plant makes sports garments for sister company Fischer, which is also based in Ried, and is at the same time involved in significant government tender projects, including the supply of polo shirts for the Austrian Red Cross and for the German and Austrian police forces. Combined, Löffler and Fischer employ approximately 700 people in the region of Upper Austria.

Within its TEXTILE SOLUTIONS, the CHT Group has developed solution approaches for manufacturing companies in the textile value chain that have to use a lot of energy for their production. This is intended to compensate high energy costs and make a positive contribution to climate protection.Application specialists work with customers to develop individual savings potentials that are specifically tailored to the production facilities and requirements. Thus, depending on the process, fabric and machine, energy savings of up to 30% can be achieved with the use of innovative CHT textile auxiliaries, dyes/pigments and the corresponding process optimisations. In addition, the numerous concepts and optimally matched products can minimise water consumption or shorten the process time.

Energy-efficient cold bleaching instead of pad-steam bleaching processes in continuous pretreatment and the 4SUCCESS process for energy-efficient and resource-saving pretreatment and dyeing of cotton help to save energy. Likewise, the use of polymer binders, which do not require energy-intensive fixation, saves energy.

Efficient pretreatment with the new polymer technology CPT (Comb Polymer Technology) achieves good cleaning effects even with low liquor ratios and thus less water to heat up. To save costs for energy-consuming heating, there is also the gentle low-temperature fixation in the easy care finishing. The OrganIQ EMS Jeans system enables jeans finishing with a reduced application temperature compared to standard processes.

With TIME BOOST, a process for fast polyester dyeing processes, not only significant energy but also time savings are achieved by omitting pre-washing and by shortening heating and migration times. SHORT CUT also leads to shorter process times when dyeing polyamide.

To avoid cost-intensive intermediate drying, the CHT Group offers the SCREEN-2-SCREEN with PRINTPERFEKT S2S which facilitates printing in a wet-on-wet technology.

In addition to numerous other products, the CHT Group also offers its customers digital tools to optimally support process optimizations. The "BEZAKTIV Soaping Advisor" calculation program within the CHT Textile Dyes app can be used to evaluate and improve dyeing and soaping processes in a simple and target-oriented way.

Over the past three years, a dedicated AI development team at BTMA member Shelton Vision has been developing tailored machine learning solutions for the textiles industry.

The aim has been to elevate the detection process and the accuracy of naming and grading subtle defects in textiles, in real time within production environments.

“Big Data ‘off-the-shelf’ systems such as those behind technolgies like facial recognition and Google Maps involve reading many thousands of single images each second and simply take too long to accumulate sufficient data for what’s required in this specific case,” says Shelton Vision CEO and Managing Director Mark Shelton. “A feature of the textile industry is that in many sectors, the product range changes several times within a year and it is not uncommon to have to inspect hundreds, if not thousands of different styles in a year based on precise settings.”

In terms of defect types, he adds, there may typically be over 100 that need to be accurately detected, classified (named) and graded in real time.

“Added to this is the need to ‘filter out’ the random occurrence of ‘non defects’, such as loose threads, lint and dust on the surface – the number of which can be higher than actual defects – and it is clear that a bespoke system is required.”
The development team has consequently established metadata for identifying defect properties, enabling the successful identification of faults from a much smaller number of images.

“The system employs a unique combination of machine learning for automated style training and novel algorithms for defect detection, to provide high quality images for the AI real time defect classification and grading software,” Shelton explains. “Due to the inherent variation in fabric features – raw materials, construction, texture, colour and finishes, as well as the differing product quality standards in value chains and the regional variations in what defects are called – our AI engine uses models built for each individual company or group of companies, or product value chain.”

The AI models are constructed so that the user operatives can populate them with their own data produced by the vision system or by obtaining defect images from another imaging source (eg a mobile phone camera).  

The occurrence of defects is sporadic and many defect types occur infrequently, although when they do, they can have severe consequences. These scenarios re-enforce the need for the AI engine to be quickly set up and able to operate accurately with limited data sets of typically between 30 and 50 good quality images per defect type.

A further feature is a tool enabling the user to periodically ‘clean up’ the AI data during the set up phase. This is used to resolve conflicting data and to correct mis-named images.

Generally, the highest cost component of fabric production is the raw material and in addition to finished product inspection, a cost effective use for vision systems is in process operation.

Generally, the highest cost component of fabric production is the raw material and in addition to finished product inspection, a cost effective use for vision systems is in process operation.

“There is a need for the real time detection of defects that are being created in separate processes, such as printing or coating and for real time automated systems that can accurately determine the defects and their severity and provide a reliable signal for an operative to rectify the issue, This can result in considerable savings.

Prior to Shelton introducing powerful customised machine vision and real time defect classification, the only systems available were those that required manual sifting through vast numbers of images, which included both real defects and ‘non defect’ images. The task was very often overwhelming and did not provide much benefit beyond manual fabric inspection.

In occasion of the next edition of Pitti Uomo, Bemberg™ by Asahi Kasei – the unique fiber with a circular economy footprint obtained from cotton linters through a closed-loop process ensuring certified sustainability credentials through its transparent and traceable approach- reveals a very special Bemberg™ fabrics smart range dedicated to premium denimwear.

This has been made possible thanks to the partnership with PureDenim, a leading Italian company whose strategy since 10 years is based on an entire re-design of the production system, inspired by circular economy principles that combines technology and innovative materials in order to offer the highest levels of design, innovation and real responsible values derived from an holistic approach to sustainability.
The “Blue di Cupro” collection is made with seven fabrics made with Bemberg™, either 100% Bemberg™ or in blend with cotton, wool, and it applies the most advanced Pure Denim Technologies. The Blue di cupro fabrics made with Bemberg™ will also be dyed with “Smart Indigo” an indigo dye technology internally produced by PureDenim, through a chemical-free production. The only elements involved are: water, indigo pigments, and electricity. In terms of finishing, fabrics’ looks and performances are enhanced by the “Eco Sonic” ultrasounds finishing technology which brings significant reduction of water used, increased aesthetic features and controlled discoloration. And last but not least every yarn used at PureDenim is protected by NaturalReco® a 100% natural product that completely SUBSTITUTE the use of plastic films that are one of the key causes of microplastic emission for denim application.

“Blue” seems to be the new colour of Bemberg™, in fact, the company in early November 2022 announced, at the Blue Friday initiative by UNESCO's Intergovernmental Oceanographic Commission (IOC), the achievement of the OK biodegradable MARINE certification, which guarantees the biodegradability of its products even in the marine environment, as certified by TÜV AUSTRIA, meaning a lot in the context of microplastics in water issue solutions. This Bemberg™ certification’s achievement comes on top of other key ones such as the INNOVHUB report that confirms Bemberg™ biodegradability in soil without releasing hazardous substances, the RCS by Textile Exchange, and the Oeko-Tex Standard 100 and ISO 14001 corporate certifications.

• Building Leadership Position in Luxury Market

Oerlikon announced that it has signed a definitive agreement to acquire Riri, a leading provider of coated metal accessories for the luxury fashion industry. This transaction marks a milestone in Oerlikon’s growth strategy and diversifies Surface Solutions’ offerings and market access. The transaction is expected to close in the first quarter 2023, subject to regulatory approvals and standard closing conditions.

“Riri is highly complementary to our existing luxury business and will reinforce our fashion jewelry and metallic components for leather goods. It is the ideal next step after our acquisition of Coeurdor in 2021 and will make us a market leader and an integrated provider with a complete offering of coated luxury metalware for high-end fashion brands,” said Michael Suess, Executive Chairman, Oerlikon. “The acquisition will drive cross-selling and strengthen our footprint in the global luxury metalware market, which sees mid- to-high single-digit growth rates annually.”

“Our portfolio, particularly in zippers and buttons, is an excellent fit to Oerlikon’s strengths in coated metal-based fashion components. Together, we are ideally positioned in Italy and France – the two major European fashion hubs – and can provide a complete offering to fashion customers,” said Renato Usoni, CEO, Riri. “We are excited to join Oerlikon as it will allow us to accelerate the luxury goods industry’s sustainability transition to greener technology by applying technologies such as Oerlikon’s PVD¹.”

Riri, headquartered in Mendrisio, Switzerland, is a market leader in metal accessories manufacturing, with a wide product range and unique offering. The company supplies global leading brands in the luxury fashion industry and has a strong foothold in the Italian luxury market. The company has more than 1 100 employees and expects to generate sales of EUR ~170 million (CHF ~165 million) in 2022.

¹ PVD, or physical vapor deposition, coating is a thin-film coating solution that is more environmentally friendly than traditional processes such as chrome plating.

With the opening of another laboratory in Shanghai, China, testing service provider Hohenstein is growing its international network. Starting in the first quarter of 2023, the new textile laboratory in the Pudong District industrial park will supplement the Hong Kong laboratory capacity with testing and on-site inspection services in the hot spots of textile production.

The new laboratory will offer suppliers, manufacturers, brands, and retailers a wide range of testing service on textile quality. "Hohenstein stands for innovation and quality. We are very pleased to celebrate another milestone in our international expansion, while following these principles," said Prof. Dr. Stefan Mecheels, who is the third generation to lead the family-run company. "No matter where the examinations, tests and analyses are carried out, all our laboratories work with state-of-the-art equipment and the same high standards."

The laboratory locations in Germany, Hungary, Hong Kong, Bangladesh, India and now Shanghai, offer shortened turnaround and sample transport times. In some locations, Hohenstein offers sample pick up services from the customer to the lab for testing.

• ESD protection in harsh environments:
• Polymer-coated chemical-resistant fabrics and fireproof special textiles with expanded electrostatic discharge (ESD) safety function have been developed.
• Graphene nanotubes used as an electrostatic dissipative material make it possible to add ESD protection without compromising resistance to aggressive environments.
• Efficient working loadings starting from 0.06% are sufficient for stable anti-static properties fully compliant with safety standards and position graphene nanotubes far ahead of other conductive materials.

Protective clothing, upholstery, and industrial fabrics that experience harsh conditions require advanced performance. Depending on the final application, specialty textiles can be augmented with flame retardancy, durability, chemical protection, and other properties. Additionally, ESD protection is obligatory in the chemical, rescue, mining, oil & gas, automotive manufacturing, and many other industries that are subject to safety regulations.
 
In applications where multifunctionality of textile is required, graphene nanotubes overcome the limitations of other conductive materials such as unstable anti-static properties; degradation of strength, or chemical or fire resistance; complicated manufacturing processes; dusty production; carbon contamination on the material’s surface; or limited color options. Recent developments show that graphene nanotubes provide ESD protection to textiles in full compliance with safety standards and without degrading the textile’s resistance to harsh environments, greatly enhancing the value of textiles.
 
One such example is textiles coated with fluoroelastomer (a polymer that is highly resistant to chemicals) augmented with graphene nanotubes from OCSiAl. Nanotubes provide the material with surface resistivity of 10^6–10^8 Ω/sq compliant with EN, ISO, and ATEX standards for personal protective equipment. This new technology opens the door for the fabric to be used in high-level protective suits, combining exceptional protection from chemicals with electrostatic discharge protection.
 
Another example is how graphene nanotube technology is being acknowledged as a replacement for metal yarns in fireproof and anti-static textiles, protecting against sparks, splashes of molten metal, high temperatures, and the risk of sudden electrostatic discharge. While metal yarns require a specific knitting process and storage conditions, incorporating nanotubes in a fabric does not require any changes in the manufacturing process as the water-based dispersion is introduced into the fabric at the fluoro-organic treatment stage. The fabric with OCSiAl’s graphene nanotubes has been proven to maintain the pre-set level of ESD protection (surface resistance of 10^7 Ω) after numerous washes.
 
Permanent and stable electrical conductivity, facilitated by graphene nanotubes, is not only a matter of safety but brings additional value in augmenting dust-repellent properties and touchscreen compatibility for comfort and time savings. At the same time, the ultralow nanotube concentrations result in maintained manufacturing processes and mechanical properties, and improve product aesthetics by making it possible to use a wide range of colors. Altogether, these benefits allow textile manufacturers to create next-generation special textiles with expanded functionality.

How can economic success be linked with product responsibility and more sustainability? More than 300 players and Hohenstein customers in the Indian textile industry accepted Hohenstein India's invitation to attend the Global Sustainability Conference in Gurugram, India, on November 10, 2022, and to obtain possible solutions to this question. The following day, numerous invited guests gathered at the Hohenstein laboratory site in Gurugram for the ceremonial inauguration of a new leather & footwear laboratory, the first of its kind in the global Hohenstein Competence Network. 

With the ceremonial opening by Prof. Dr. Mecheels, Dr. Christof Madinger, COO Hohenstein HTTI and Dr. Helmut Krause, Hohenstein Technical Director Softlines & Shoes, the starting signal was given for the new leather & footwear laboratory at the laboratory site in Gurugram on November 11, 2022. During tours, visitors were able to get a personal impression of the future focus of work on site: testing for harmful substances in accordance with the LEATHER STANDARD RSL and the subsequent certification of leather and footwear products in accordance with the OEKO-TEX® LEATHER STANDARD will in future ensure a lower market risk for brands, retailers and suppliers and comprehensive and reliable safety for consumers.

• Focus on the guiding principle of "textile intelligence" and sustainability

Long before sustainability became a trend in the textile industry, Schoeller Textil AG, which has been innovating technical fabrics and smart textile finishing technologies for more than 150 years, made it its mission to develop textile innovations in harmony with nature. Now the company is undergoing an extensive rebranding, whilst unveiling its strong brand foundation in the process. The result embodies the newly defined guiding principle of “Textile Intelligence” - the development and successful implementation of innovative textiles and intelligent textile technologies.

Innovations in the textile industry must meet requirements on several levels – offering both new and optimized solutions to sociological, ecological, and economic challenges of our time. Creating this holistic added value is firmly rooted in the Schoeller brand origin and is still the top priority in textile product development today. The brand essence has thus remained the same, but it has been embodied anew.

“At the beginning of the rebranding process, it was clear to us we had to root ourselves in (Swiss) tradition in order to fully realize Schoeller’s entire brand potential and successfully explore new, digital paths,” said Antonio Gatti Balsarri, Schoeller chief commercial officer.

“The goal of the rebranding is to communicate our traditional brand values in a completely new brand presence. The result was a sharpened brand profile, a clear brand strategy and tonality, as well as a clean, modern corporate design. We will specifically address our sustainability commitment through the expansion of digital touchpoints, their cross-media use, and an increased online presence. Simplified, straightforward, sustainable - in accordance with our greatest source of inspiration: nature.”

Transparency and Sustainability
Paramount to Schoeller’s corporate identity is the full disclosure of brand principles and transparency around all business divisions. A simplified logo design was established by reducing logo elements and colors for a modern look and feel that can be produced in a much more resource-efficient manner. Schoeller’s new brand mantra of “Textile Intelligence” speaks to its company mission of more than 150 years.

Schoeller has been a bluesign system partner from the very beginning and uses the Higg Facility Environmental Module (FEM) to assess sustainable performance. In addition to environmentally-friendly manufacturing processes and careful material selection, the highest quality and sustainability standards in production also mean guaranteeing fair working conditions. Schoeller follows a Code of Conduct that guarantees transparent production chains, environmental protection, and fair working conditions.

“Zero Textile Waste” becomes a targeted brand strategy. While the production of textiles and textile technologies is continuously being optimized to preserve resources, the manufacturing processes are often costly and complex. To this end, Schoeller offers new approaches to efforts around Zero Waste in the industry. Its new online shop, “Schoeller re-Fabric” sells textile remnants from production directly to designers and smaller productions to increase its overall production volume efficiency and avoid textile waste.