From the Sector

• Spunbond, meltblown and composite structures for new market opportunities

RadiciGroup is participating with its Advanced Textile Solutions business area at Index in Geneva from 18 to 21 April 2023. Among the Group’s products showcased are spunbond and meltblown for different application sectors, such as roofing, construction, automotive, HO.RE.CA. and filtration.

“The key message we are bringing to the fair is sustainability,” noted Enrico Buriani, CEO of the Nonwovens division of RadiciGroup Advanced Textile Solutions. “Those who already know us know that, for many years, the Group has been focused on proposing low environmental impact products and processes where sustainability is scientifically measured or certified by independent third parties. Our company is dedicated to nonwovens, which, by the way, are produced using 100% renewable energy. We have expanded our portfolio of innovative solutions for customers interested in realizing projects with sustainability as an essential requirement.”

Respunsible® is a spunbond brand manufactured from recycled polypropylene. A preliminary Life Cycle Assessment (LCA) study was carried out by RadiciGroup to demonstrate the correlation between the reduction in environmental impact and the percentage increase in recycled material. The final results demonstrate that a variable percentage of from 50 to 70% recycled material leads to a reduction in CO2 emissions of from 30 to 40%, compared to a fabric made of 100% virgin material, without comprising high technical performance.

Additionally, since RadiciGroup has achieved ISCC PLUS certification (International Sustainability and Carbon Certification), it can offer bio, biocircular or circular polypropylene spunbond and meltblown nonwovens, in which the sustainable polypropylene is biomass balanced. This certification signifies traceability along the supply chain and verifies that the certified companies meet high environmental and social standards.

“Since 2020, we have had a technologically advanced meltblown production line,” Mr. Buriani concluded. “This allows us to make composite structures, sold under the brand name Radimelt®. Now our goal is to expand our filtration applications, diversifying and developing new business, for instance vacuum cleaner bags or HVAC (heating, ventilation and air conditioning) system filters, where we can meet the high efficiency and mechanical resistance demanded, thanks to our latest generation technology.”

A little over three years have passed since RadiciGroup announced the acquisition of Zeta Polimeri, an Italian company headquartered in Buronzo (VC) with over 30 years' experience in the recovery of pre- and post-consumer synthetic fibres and thermoplastic materials. Today, the company has become a full member of the Group with its new name Radici EcoMaterials Srl.

The new company’s long-standing know-how, combined with RadiciGroup’s as a whole, will create a virtuous production system that recovers worn-out materials (fabric, yarn and granules), or otherwise unusable materials, and processes them into raw materials available for other production cycles by taking advantage of industrial synergy.

Radici EcoMaterials is a strategic production site because it handles all the preliminary recovery stages: the sorting, processing and pre-treatment of materials, including those used for the production of post-consumer yarns and engineering polymers. In this sense, Radici EcoMaterials is in line with the most recent European policies on sustainable textiles, which address minimizing the share of materials destined for disposal sites, favouring instead more structured recycling solutions.

Radici EcoMaterials is also GRS certified. GRS certification ensures the complete traceability of its materials, which are made in a safe plant that meets the highest environmental and social certification standards.

The company is also equipped with a photovoltaic system and, for the portion of its energy needs not covered by the photovoltaic source, it partially relies on renewable energy. The goal is to use 100% green energy in the next few years, in accord with RadiciGroup's goals.

• Precious water for villages that are running on dry land

The GoodTextiles Foundation has worked to improve drinking water supplies in sub-Saharan Africa in another joint project with Cotton made in Africa (CmiA). In three villages in Togo particularly affected by climate change, the partners built wells and trained people in the use of water. The curriculum included the topics of disease prevention, hygiene and health care.

In 2016, the textile company Dibella (Bocholt) established the GoodTextiles Foundation with the aim of making textile value chains more sustainable. It raises funds and implements its own support projects to benefit people at all stages of the textile industry. Now the foundation has once again supported a project in sub-Saharan Africa initiated by Cotton made in Africa (Hamburg). Funding is being provided for three villages in Togo that, according to a needs assessment by CmiA's local partner, the cotton company Nouvelle Société Cotonnière du Togo (NSCT), have no direct access to drinking water.

Difficult water procurement
The areas where CmiA's drought-resistant cotton is grown include the north and interior of Togo, where cotton farmers are particularly affected by the effects of climate change due to prolonged periods of drought. Many village communities lack access to clean drinking water, and people draw contaminated water from more distant rivers or waterholes and carry the heavy load back with difficulty.

Guide to clean water
As part of a joint project between the GoodTextiles Foundation, Aid by Trade Foundation (holder of the CmiA standard) and NSCT, three drought-affected villages - Namare/Puob-n-kpaad, Tchokoroko and Aloba - will now receive their own water supply.

The funds - 11,756 euros will be provided by the GoodTextiles Foundation, and 4,419 euros will come from the Cotton Society - will be used to construct a well operated by hand pumps in each village. The construction work is to be completed by March 2023 and the 2,300 inhabitants will be taught the basics of water handling, disease prevention and hygiene measures in so-called WASH training courses.

Driving force: UN SDGs
For years, we have aligned our company with the UN's 17 Sustainable Development Goals (Global Goals for Sustainable Development). Through the sponsorship project, we are not only contributing to SDG 6 "Clean water and sanitation", but also to gender equality (SDG 5). In the African countries from which we source CmiA cotton, the physically strenuous task of procuring water is still the responsibility of women. The construction of the wells now leads to a significant improvement of their living situation," reports Ralf Hellmann, managing director of Dibella and chairman of the foundation.

Continued under their own responsibility
Once the wells have been handed over to the village communities, "water committees" will take over their management and maintenance, as well as responsibility for further hygiene training for the residents. The operation of the wells will be financed on the basis of a fund made up of small contributions from the beneficiary communities.

Indorama Ventures Public Company Limited (IVL) and technology specialist Polymateria Limited have signed an exclusive 10-year partnership to help household brands bring biodegradable nonwoven hygiene products to the market through biotransformation technology.

This collaboration provides a new solution for dealing with essential items like facemasks and wipes once they have been used, ensuring they can return safely to nature without leaving behind any microplastics or toxic residue. It is specifically designed to tackle plastic leaking into the environment as unmanaged waste, meaning it is neither collected for landfill nor recycled. Given that most of the plastic in our oceans originates as unmanaged waste on land, addressing the unmanaged waste challenge is key.

IVL’s right to use Polymateria’s unique biotransformation technology for nonwovens supports application in non-virgin resin recycling while providing a solution for ‘fugitive’ used articles, especially those items that end up in the natural environment. This biotransformation process involves the plastic transforming into a bioavailable wax in the open terrestrial environment, whereupon the wax is fully consumed by bacteria, microbes and fungi, leaving just carbon dioxide, water, and biomass. The pulp component is inherently biodegradable under similar conditions.

Nonwovens made by IVL using Polymateria’s technology have been independently tested against, and meet the criteria in, the BSI PAS 9017 standard for the biodegradation of polyolefins in an open-air terrestrial environment published by the British Standards Institution in October 2020. This standard and/or its criteria – the first in the world to ensure plastic can biotransform in the open terrestrial environment without creating any microplastics – is being adopted around the world including in India, Malaysia, the Philippines and Hungary.

Textile performance inspired by nature - Swiss textile manufacturer Schoeller Textil AG launches the sustainable textile collection RE-SOURCE as part of its brand sustainability strategy. All textile innovations in the collection are made from bio-based, post- as well as pre-consumer materials such as recycled polyester and spandex. These are further enhanced with Schoeller textile technologies to provide the wearer with breathability, thermal regulation and wind and water repellency.

Two textile innovations in the collection have been lined on the inside with natural NATIVA Merino wool, produced under the highest sustainability standards. The manufacturing process of NATIVA Merino wool is 100% transparent and traceable for consumers through blockchain technology. NATIVA farms worldwide meet strict social and environmental requirements for animal welfare (ban on mulesing), land management and ethical labour guidelines.

Schoeller is committed to the CODE OF CONDUCT, which guarantees transparent production chains, environmental protection and fair working conditions. All RE-SOURCE textile innovations are bluesign approved - the international standard for responsible and sustainable textile manufacturing.

"The special Q-cycle process was used for RE-SOURCE. The resistant and durable Q-cycle polyamide is obtained by pyrolysis of used tyres and thus saves Co2 emissions compared to the combustion process. In this way, we are helping to protect the climate with Q-cycle," says Hans Kohn, COO, Schoeller Technologies AG.

The new recycled textile collection will be presented at the PERFORMANCE DAYS textile trade fair in Munich from 15-16 March 2023.

• Longer parking times for greater efficiency

Since 2018, Oerlikon Barmag has been offering the market’s only currently available concept for high-end home textile applications using the POY and DTY process. The spinning concept with the WINGS HD winding unit in conjunction with an automatic eAFK Big V Multispindle texturing machine manufactures high-titer yarns with maximum machine efficiency.
 
“We have correspondingly modified WINGS HD in order to once again better align the increased requirements of these special yarns to the spinning process and make everyday production even simpler for our customers”, comments Stephan Faulstich, POY Process Technology Manager. The parking times are extremely short when winding high titers. We have increased the parking times by up to three times in the case of the new WINGS HD models. To this end, the parking time for a 300d/384f yarn, for example, has been increased from a standard 6.5 min. to 15.7 min. – and, in the case of a 400d/192f yarn, from 4.3 min. to 10.3 min. This makes the doffing process more even, hence increasing doffing reliability.

At the same time, the draw unit now has a more flexible design, meaning that two-godet operation is also possible in the case of products with low overall titers. This has a positive impact on the winding unit’s energy consumption.

12 POY packages of up to 600d/576f (final) are produced in the spinning process using WINGS HD 1800. This is made possible as a result of an additional godet, which ensures that the high yarn tensions developing in the process are reduced to the yarn tensions common in the case of the winding process to date. At the same time, the newly-developed suction unit with the accompanying yarn cut-ting device (yarn collecting system) ensures – both during string-up and in the event of a yarn break – reliable handling of the yarn with an overall titer of 7,200 den (final).

Whereas DTY yarns up to 1,200 den and with up to 784 filaments have in the past, as standard, been plied from four POY 300d/192f bobbins using DTY machines, high titers can also be manufactured directly using the WINGS HD take-up machine. Combining the WINGS HD and the eAFK Big V allows all available winding positions to be utilized during texturing.

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.

From April 2023, OEKO-TEX® will officially launch its new ORGANIC COTTON label. Two initial pilot customers have already been certified by the testing service provider Hohenstein: the Indian textile supplier Milan Group and the Turkish cotton producer Akasya.

The new organic label ensures that all requirements for labeling as organic cotton are met. In addition to testing in accordance with OEKO-TEX® STANDARD 100, it ensures that the cotton contains less than ten percent genetically modified material, complies with pesticide limits and guarantees its organic origin.

Textile companies whose products have been certified with the OEKO-TEX® STANDARD 100 can now have their certificates extended to an ORGANIC COTTON certificate after ensuring ecological production.

"A combination with OEKO-TEX® MADE IN GREEN is ideal," explains Ivonne Schramm, Head of OEKO-TEX® at Hohenstein. "This ensures environmental friendliness, transparency and socially responsible conditions in a single certification."

The certificate can be used for ready-made articles (e.g. T-shirt, bedspread, etc.) as well as for textile intermediate products (e.g. intermediate products such as raw fibers, yarns, etc.). Mixtures of organic and conventional cultivation are not permitted.

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.