From the Sector

Freudenberg Performance Materials (Freudenberg) has launched an elastic variant of its flexible superabsorbers for modern wound dressings. These superabsorbers increase the comfort level for patients as well as enabling longer wear time, thus reducing the frequency of dressing changes. Freudenberg is debuting the elastic superabsorbers at this year’s Compamed in Düsseldorf, from November 14 – 17, 2022. Further highlights at the trade fair include components for more sustainable wound care, PU foams with directly applied silicone adhesives, and an innovative hydrophilic debridement foam.

Freudenberg uses a new technology to manufacture the elastic superabsorbers. Unlike other methods, this technology does not perforate or slit the material, thus achieving a high degree of consistent elasticity. Furthermore, the technology used by Freudenberg bonds the superabsorbent fibers more uniformly with the material, thus enhancing the integrity of this layer in the wound dressing.

“Our new elastic superabsorbers demonstrate yet again how Freudenberg components help increase comfort for patients, reduce the workload for nursing staff and lower healthcare costs. Our extensive technology platform and our innovative strength are the basis for this,” Dr. Henk Randau, SVP and General Manager Global Division Healthcare at Freudenberg Performance Materials, said.

At the recent CAMX 2022 Composites and Advanced Materials Expo in Anaheim, California, The Heat Sealing Module – HSM from Zünd was recognized with an Unsurpassed Innovation Award. The HSM significantly facilitates the processing and handling of dry fiber materials with thermoplastic content. This new tool is Zünd’s answer to a demand in the composites industry for wider-spread use and easier processing of these types of materials.

The American Composites Manufacturing Association, ACMA, proclaimed the Heat Sealing Module – HSM the winner of the ACE Award for Unsurpassed Innovation in the “Manufacturing: Equipment and Tooling” category. This award is presented annually to equipment, tooling, a production aid, or software designed to improve manufacturing production, environmental sustainability, or product quality and performance in composites manufacturing.

During processing, dry fiber materials are prone to fraying along the edges. Using hot air, the HSM seals the fabric along the cut path in advance of the Zünd Power Rotary Tool – PRT cutting it. Because of this sealing process, the cut can then be performed at full speed, in any direction, and produces both higher-quality parts and greater production efficiencies.

The HSM helps create clean, sealed edges when cutting fiber-reinforced thermoplastic composites. It benefits not only the cutting process itself, but other production processes downstream. Cutting this way leaves behind no loose or uncut fibers and maintains a clean cutting surface and uncontaminated production environment. At the same time, it ensures that cut parts maintain their shape, and this increased stability makes them much easier to handle, especially in fully automated production workflows.

Viscose speciality fibres manufacturer Kelheim Fibres partners with TextileGenesisTM, a traceability platform that creates radical transparency from fibre-to-retail and ensures authenticity d provenance of sustainable textiles against generics.

“Our wood-based fibres are an environmentally friendly basis for sustainable textiles - it's just that consumers often don't know what's behind their garments. But they need to know it’s in their hands to minimise the ecological footprint of the textile industry. Transparency and traceability are the foundation that enables consumers to make informed decisions.”, says Dr. Marina Crnoja-Cosic, Director New Business Development at Kelheim Fibres.

TextileGenesisTM uses blockchain technology to track and verify the use of sustainable fibres all the way from fibre to garment. A digital fibercoin ensures transparency and reliability throughout the entire production line and beyond.

Amit Gautam, Founder & CEO at TexileGenesisTM:"Fashion and textile value chain is undergoing major transformation driven by sustainable materials, shifting consumer demand for sustainable products, and increasingly stringent regulations on transparency. Great to see Kelheim moving the industry forward by actively participating in the traceability journey."

IDTechEx report: Wearable Sensors 2023-2033

Overall, this report provides insight into how wearable sensors could be integrated into society long term - the technology underpinning value within the trend towards 'the quantified self'. The main drivers for growth identified are digital health and remote patient monitoring, extended reality, and the metaverse and performance analytics of athletes and sports people.

More people than ever before are turning to wearable sensors to monitor their activity levels. Despite its origin in simple step counting, the market for wearable sensors is expanding into the more complex arena of health monitoring. Innovations in wearable sensor technology are expanding the envelope of biometrics accessible through watches and skin patches, addressing the rising demand for remote patient monitoring and decentralized clinical trials but also increasing consumer expectations. This includes easier access to health data, and extends further to sensor integration into headsets and accessories for immersive AR/VR experiences.
 
Motion sensors finding applications beyond step counting
Motion sensing hardware is well established, with accelerometers integrated into almost every wearable. Therefore, as profit margins for manufacturers diminish with commoditization, expanding the application space is crucial to maintain growth. This report provides an outlook for emerging use cases such as health insurance rewards, clinical trials, and professional athlete monitoring.
 
Optical sensors seeking to go further than heart-rate detection
Smart-watch wearers are familiar with the red and green lights on the back of their devices, used to obtain heart-rate data or blood oxygen and further analyzed for insights into calorie burn, VO2 max, and sleep quality.
Sensor developers are interested in pushing the boundaries of what can be measured non-invasively with light - whether it be through new software to analyze photoplethysmography (PPG) signals or new hardware for spectroscopy. Multiple companies are competing to lead in the commercialization of wearable blood pressure, with others setting their sights on ambitious 'clinic on the wrist' devices to replace common hospital tests and even glucose monitoring. This report appraises the potential for optical sensors, and overviews challenges for calibration requirements and regulatory approval.
 
Monitoring of the heart, muscle, and brain
Incorporating conductive materials into wearable technology is a simple concept. However, it has led to a vast variety of wearables sensors including wet electrodes stuck on the skin to measure the heart, dry electrodes in headphones to analyze brain signals, and microneedles within skin patches to quantify muscle movements. As such, this also creates a broad application space for electrodes ranging from vital sign monitoring and sleep analysis for healthcare, to emotional response and stress monitoring for marketing and productivity. This report dedicates a section to the four key categories of electrodes: wet, dry, microneedle, and electronic skin. This includes a summary of key material and manufacturing requirements.
 
Wearable sensors are fundamental to continuous monitoring of health, fitness, and wellness. As applications for wearable technology grow, there are increasing opportunities for sensors that detect parameters ranging from glucose levels to pressure and from motion to temperature. Based on a decade of market research on wearable technology hardware, this report analyses the technological and commercial landscape of this growing industry, both today and into the future. IDTechEx's research in wearables tracks the progress of over 50 wearable electronic product types. Within each of these products, a key focus of the research has been understanding and characterizing the prevalence of sensor types integrated into each.

Perstorp has been acquired by PETRONAS Chemicals Group Berhad (PCG), Malaysia´s leading integrated chemicals provider and part of PETRONAS Group, on 11 October 2022.

In May this year, PCG signed a Securities Purchase Agreement with Financière Forêt S.à.r.l, a company under PAI Partners, a European private equity firm, to acquire the entire equity interest in Perstorp, a leading sustainability-driven global specialty chemicals company based in Sweden. With the completion of the acquisition, Perstorp is now PCG’s wholly-owned subsidiary.

PCG will strive to ensure the timely completion of Perstorp’s growth projects in a safe and cost-effective manner. Perstorp has several projects lined up in the near future, including the launch of Project Air which aims to reduce carbon emissions through the production of sustainable methanol. Recently, The European Union Innovation Fund selected Project Air, as one of the 17 large-scale green tech projects, which together will be granted more than EUR 1.8 billion. Project Air is a gamechanger for the chemical industry, moving from fossil raw materials to recycled and bio-based feedstock, thereby enabling sustainable chemical products to a large variety of industries and end products. At full capacity, it will reduce global CO2 emissions with close to 500,000 metric tons per year from today’s levels, corresponding to one percent of current emissions in Sweden.

• DiaperRecycle Wins RISE® Innovation Award for Technology that Transforms Used Diapers into Cat Litter

Product development and innovators in nonwovens & engineered materials gained expert insights on material science innovation and sustainability at the 12^th edition of RISE® — Research, Innovation & Science for Engineered Fabrics conference, organized by INDA, the Association of the Nonwoven Fabrics Industry, and The Nonwovens Institute, North Carolina State University, Sept. 27-28 at North Carolina State University in Raleigh, NC.

More than 20 industry, academic, and government experts from across the globe presented technical developments in sessions focused on circularity and sustainable inputs from such sources as Polylactic Acid Polymers (PLA), natural fibers, biofibers, and waste products.

Highlights included presentations on Achieving Supply Chain Circularity, by Kat Knauer, Ph.D., Program Manager – V Research, National Renewable Energy Laboratory, NREL; The Global Plastic Crisis: Winners/Losers in the Marketplace, by Bryan Haynes, Ph.D., Senior Technical Director, Global Nonwovens, Kimberly-Clark Corporation; Sustainable Fibers – Development and the Future by Jason Locklin, Ph.D. Director, University of Georgia – New Materials Institute; PLA & PLA Blends: Practical Aspects of Extrusion by Behnam Pourdeyhimi, Ph.D., William A. Klopman Distinguished Professor, and Executive Director, The Nonwovens Institute, North Carolina State University; and Mitigation of Quat Incompatibility with Cotton and other Cellulosic-based Substrates, by Doug Hinchliffe, Ph.D., Research Molecular Biologist, USDA-ARS.

RISE® Innovation Award Winner
DiaperRecycle was awarded the RISE® Innovation Award for its innovative technology to recycle used diapers into absorbent and flushable cat litter. The annual award recognizes innovation in areas within and on the periphery of the nonwovens industry that use advanced science and engineering principles to develop unique or intricate solutions to problems and advance  nonwovens usage.

By diverting used diapers from households and institutions, and separating the plastic and fiber, DiaperRecycle strives to decrease the climate-changing emissions of diapers from landfills.  “I am thrilled and grateful to win this award — as it proves we are on the right track,” said Cynthia Wallis Barnicoat, CEO of DiaperRecycle.

Other award finalists included Binder BioHook® by Gottlieb Binder GmbH & Co. KG and Sero® hemp fibers from Bast Fibre Technologies, Inc. (BFT).

The 13^th edition of RISE® — Research, Innovation & Science for Engineered Fabrics conference will be held Sept. 12-13, 2023 at North Carolina State University in Raleigh, NC.

C.L.A.S.S. continues its path of "strategic sustainable synergies" with the aim of sharing its message of responsible innovation, and returns for the second time to Milan Fashion Week with WSM White Sustainable Milano. The objective is to represent a selected and smart path of the production chain related to materials, technologies, production, customization, finishing processes and dyes that are increasingly less impactful on the environment.
 
After debuting last February, “Unveiling the Fashion Backstage”, the educational and narrative journey of WSM | White Sustainable Milano developed in synergy with Giusy Bettoni, founder and CEO of C.L.A.S.S., returns to the VISCONTI HALL and grows in terms of attendance and thematic areas.

The exhibiting copmpanies are: Bemberg™ by Asahi Kasei, Maeba International, Linificio e Canapificio Nazionale SB, Edmos, Toyoshima, Iluna Group and YKK.

• Monomaterial solution contains renewably-sourced polypropylene from the Bornewables™ portfolio of circular polyolefins
• Trexel employs its proprietary MuCell® technology to deliver a range of lightweighting benefits
• EverMinds™ in action: reuse and design for recycling are focus of value chain collaboration

Borealis and Trexel, an expert in foaming injection and blow moulded parts, announce that they have co-developed a new plastic bottle based on a grade from the Bornewables™ portfolio of polyolefins made using renewable feedstocks derived 100% from waste and residue streams. The lightweight bottle – which will be showcased at the Borealis stand at the K 2022 (from 19 to 26 October 2022 in Düsseldorf) – is reusable and fully recyclable. It boasts a significantly lower overall CO₂ footprint because it is composed of renewably-sourced feedstock and produced in the foaming process.

The Bornewables™ portfolio of circular polyolefins helps reduce the carbon footprint while offering material performance equal to virgin polymers. Using Bornewables grades allows for design freedom and colour flexibility, and helps retain a premium look and feel. The grades – which are commercially available in Europe – help conserve natural resources because they are derived solely from waste and residue streams, for example from used cooking oil. Reusing waste already in circulation instead of fossil fuel-based feedstocks enhances the sustainability of applications made using the Bornewables grades.

The reusable new bottle developed by Borealis and Trexel retains its value over many life cycles thanks to the use of Trexel’s proprietary technology in tandem with Bornewables grades; as a material solution, the new bottle minimises the use of valuable raw materials. Moreover, converters consume less energy in the production process when using the MuCell® technology. The bottle thus helps close the loop on plastics circularity by way of design for recycling, the use of renewable feedstocks, and excellent material performance across multiple life cycles.

Monforts will highlight its technologies for special technical textile applications at this year’s ITMA ASIA + CITME which takes place at the National Exhibition and Convention Center in Shanghai, China, from November 20-24.

One of Monforts' developments is the Montex 8500 XXL stenter system for the production of technical fabrics in widths of up to 6.8 metres. Among the products made on this system are treated nonwovens for the geotextiles and filter media markets, tarpaulins, advertising banners, black-out curtains, membranes and many more.

On Montex©Coat coating lines, meanwhile, the possibilities range from the single-sided application of finishing agents for outdoor clothing and adding functionality to home textiles, to the creation of materials for sophisticated lightweight construction and automotive and aerospace components.

“Many more applications are possible, such as the overdyeing of denim, the creation of double-face coated materials, fabrics awnings, tents and medical drapes and the pre-treatment of substrates for digital printing”, explains Gunnar Meyer, Monforts area sales manager for China. “A range of different doctor blades and their combinations can be supplied to meet individual requirements, including air knife, roller knife, foam, screen and magnetic roller coating. The latter option is recommended for lines with working widths of over 2.4 metres.”

In addition, Monforts can provide the necessary explosion-proof ranges for solvent-based coatings and high temperature processes up to 320°C, such as the PTFE coating of nonwoven filter material. These lines are equipped with special burners, stenter chains, and insulation.

• Aims to tackle the immense textile waste generated in urban environments, on the back of import bans of waste materials
• Addresses the shortcomings of current textile recycling technologies, which are unsuitable for urban settings due to the use of heavy chemicals
• Technologies developed by the newly-formed RGE-NTU Sustainable Textile Research Centre will be test-bedded in RGE’s pilot urban-fit textile recycling plant, projected for completion as early as 2024

Royal Golden Eagle (“RGE”), a global group of resource-based manufacturing companies, which includes a world-leading viscose fibre producers Sateri and Asia Pacific Rayon (APR), is developing urban-fit, closed-loop textile-to-textile recycling solutions, through the newly-formed RGE-NTU Sustainable Textile Research Centre (RGE-NTU SusTex). This is a five-year research collaboration between RGE and Nanyang Technological University, Singapore (“NTU”), to accelerate innovation in textile recycling that can be deployed in urban settings. The research centre will develop new technologies to recycle textile waste into fibre and create new, next-generation eco-friendly and sustainable textiles.

This move comes on the back of the tightening of waste import bans in countries such as China, India and Indonesia, which are among the world’s largest waste processors. The stricter import bans have left cities in need of viable local textile recycling solutions to tackle the immense textile waste generated.

RGE Executive Director, Mr Perry Lim, said, “Current textile recycling technologies, which rely primarily on a bleaching and separation process using heavy chemicals, cannot be implemented due to environmental laws. At the same time, there is an urgent need to keep textiles out of the brimming landfills.” He added, “As the world’s largest viscose producer, we aim to catalyse closed-loop, textile-to-textile recycling by developing optimal urban-fit solutions that can bring the world closer to a circular textile economy.”

Globally, an estimated 90 million tonnes of textile waste is generated and disposed of every year, with less than 1% being upcycled into new clothing or other textile materials. By 2030, the amount of global textile waste, which currently accounts for almost 10% of municipal solid waste, is expected to reach more than 134 million tonnes. The textile industry is also responsible for 10% of global greenhouse gas emissions – more than international flights and maritime shipping combined.

At present, most of the available textile recycling technologies are open-loop, where textile waste is typically downcycled to lower-quality products (insulating materials, cleaning cloths, etc.) or be used in waste-to-heat recycling.

“Closed-loop textile-to-textile recycling processes, particularly chemical recycling, are still under development. Scaling up the technologies to industrial scale remains a challenge. A key bottleneck is that refabricating textile waste into fibre needs purity standards for feedstock. However, most of the clothes that we wear are made of a mixture of different synthetic and natural fibres, which makes separating the complex blends of materials challenging for effective recycling.

“Our aim is to address this industry pain point by developing viable solutions that use less energy, fewer chemicals and produces harmless and less effluents, and then potentially scale up across our global operations,” Mr Lim said.

To tackle the key challenges in closed-loop textile recycling, RGE-NTU SusTex is looking into four key research areas, namely cleaner and more energy efficient methods of recycling into new raw materials, automated sorting of textile waste, eco-friendly dye removal, and development of a new class of sustainable textiles that is durable for wear and, at the same time, lends itself to easier recycling.

Technologies developed by RGE-NTU SusTex will be test bedded at RGE’s pilot urban-fit textile recycling plant in Singapore, which is projected for completion as early as 2024. If successful, RGE has plans to replicate the plant in other urban cities within its footprint.