From the Sector

INDA, the Association of the Nonwoven Fabrics Industry, wrapped up its 15th annual World of Wipes® International Conference, July 12-15, with a presentation of the World of Wipes Innovation Award® to Kimberly-Clark Corporation and the highest attendance record in six years.

This year’s WOW conference welcomed 475 enthusiastic professionals from 14 countries to its in-person World of Wipes® (WOW) International Conference to advance their wipes business. Held in Atlanta, GA, the conference was notable as the first in-person conference in the nonwovens and engineered fabrics industry in 500 days due to the pandemic.

Industry professionals from 33 global companies delivered presentations and answered questions in sessions that included Wipes and the Growing Plastics Debate, Regulatory Requirements for Disinfecting and Sanitizing Wipes, Trends in the Wipes Markets and Among Consumers, Wet Wipe Preservative Innovations, Covid-19 Impacts on Wipes Consumption and Cleaning Habits, Sustainable Wipes Packaging and Dispensing, Nonwoven Substrates for More Sustainable Wipes, and Flushable Wipes: Loved by Consumers, Wrongly Accused by Utilities.

Highlights included the announcement of Kimberly-Clark Scott® 24-Hour Sanitizing Wipes as the winner of this year’s World of Wipes Innovation Award®. The annual award recognizes the product that most expands the use of nonwovens and demonstrates creativity, novelty, uniqueness, and technical sophistication within the entire nonwovens wipes value chain.

Other highlights included the presentation of the 2021 INDA Lifetime Technical Achievement Award to John Poccia. The annual award is nominated by INDA’s Technical Advisory Board and presented to an individual whose technical achievements over a long-standing career have significantly contributed to the technical advancement, success, and growth of the nonwovens industry.

Other presentation highlights included:

• Recent Developments Under the EU Green Deal and Plastics Strategy – Pandemic Update – Gyongyi David, Attorney at Law, V V G B Advocaten-Avocats, Director- EHS Regulatory, Steptoe & Johnson LLP
• FDA & EPA Framework of Regulations: Dry Wipes Claims – Tony Herber, Principal Regulatory Consultant/Assistant Federal Team Manager, Scientific & Regulatory Consultants, Inc. (SRC. Inc.)
• Consumer Wipes Usage During Covid-19 and Future Use – Chris Dresselhuys, Business Director-North American Retail Wipes, Rockline Industries
• Sustainable Solutions for Wipes – Vishal Bansai, Vice President, Innovation, and Silke Brand-Kirsch, VP, Marketing and Business Development, Glatfelter Gernsbach GmbH
• Sustainability Impacts Across the Value Chain of Wipes Packaging – Vicky Chang, Marketing Manager, Consumer & Industrial Products, Amcor Flexibles
• Unveiling Wet Wipes Preservation: New Findings on Microbial Risks and Preservative Solution – Paul Salama, Ph.D., CTO& Head of Innovation, Sharon Laboratories

• Fraunhofer, SABIC, and Procter & Gamble join forces
• The Fraunhofer Cluster of Excellence Circular Plastics Economy CCPE and its Institute for Environmental, Safety and Energy Technology UMSICHT have developed an advanced recycling process for used plastics.
• The pilot project with SABIC and Procter & Gamble serves to demonstrate the feasibility of closed-loop recycling for single-use facemasks.

Due to COVID-19, use of billions of disposable facemasks is raising environmental concerns especially when they are thoughtlessly discarded in public spaces, including - parks, open-air venues and beaches. Apart from the challenge of dealing with such huge volumes of essential personal healthcare items in a sustainable way, simply throwing the used masks away for disposal on landfill sites or in incineration plants represents a loss of valuable feedstock for new material.

“Recognizing the challenge, we set out to explore how used facemasks could potentially be returned into the value chain of new facemask production”, says Dr. Peter Dziezok, Director R&D Open Innovation at P&G. “But creating a true circular solution from both a sustainable and an economically feasible perspective takes partners. Therefore, we teamed up with Fraunhofer CCPE and Fraunhofer UMSICHT’s expert scientists and SABIC’s Technology & Innovation specialists to investigate potential solutions.”

As part of the pilot, P&G collected used facemasks worn by employees or given to visitors at its manufacturing and research sites in Germany. Although those masks are always disposed of responsibly, there was no ideal route in place to recycle them efficiently. To help demonstrate a potential step change in this scenario, special collection bins were set up, and the collected used masks were sent to Fraunhofer for further processing in a dedicated research pyrolysis plant.

“A single-use medical product such as a face mask has high hygiene requirements, both in terms of disposal and production. Mechanical recycling, would have not done the job”, explains Dr. Alexander Hofmann, Head of Department Recycling Management at Fraunhofer UMSICHT. “In our solution, therefore, the masks were first automatically shredded and then thermochemically converted to pyrolysis oil. Pyrolysis breaks the plastic down into molecular fragments under pressure and heat, which will also destroy any residual pollutants or pathogens, such as the Coronavirus. In this way it is possible to produce feedstock for new plastics in virgin quality that can also meet the requirements for medical products”, adds Hofmann, who is also Head of Research Department “Advanced Recycling” at Fraunhofer CCPE.

The pyrolysis oil was then sent to SABIC to be used as feedstock for the production of new PP resin. The resins were produced using the widely recognized principle of mass balance to combine the alternative feedstock with fossil-based feedstock in the production process. Mass balance is considered a crucial bridge between today’s large scale linear economy and the more sustainable circular economy of the future, which today is operated on a smaller scale but is expected to grow quickly.

“The high-quality circular PP polymer obtained in this pilot clearly demonstrates that closed-loop recycling is achievable through active collaboration of players from across the value chain”, emphasizes Mark Vester, Global Circular Economy Leader at SABIC. “The circular material is part of our TRUCIRCLE™ portfolio, aimed at preventing valuable used plastic from becoming waste and at mitigating the depletion of fossil resources.”

Finally, to close the loop, the PP polymer was supplied to P&G, where it was processed into non-woven fibers material. “This pilot project has helped us to assess if the close loop approach could work for hygienic and medical grade plastics”, says Hansjörg Reick, P&G Senior Director Open Innovation. “Of course, further work is needed but the results so far have been very encouraging.”

The entire closed loop pilot project from facemask collection to production was developed and implemented within seven months. The transferability of advanced recycling to other feedstocks and chemical products is being further researched at Fraunhofer CCPE.

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.

Baldwin Technology’s Ahlbrandt, a leader in providing corona, rotor spray and drying technology for industries including food packaging, textiles and more, has launched the highly efficient Ozone Converter Catalytic Air Purifier (CAP), which cleans exhaust air from corona surface treatment systems. With a catalyst bed of metal oxides, the CAP ensures an ozone-free, environmentally friendly production facility.

Featuring a compact, durable design, the CAP also is modular for easy maintenance and expansion, if needed. As requirements and production conditions change, the catalyst volume is adapted to the exhaust volume of the installed corona surface treatment system. Additionally, the catalyst filter is designed without active carbon, making it nonflammable and very safe, especially when running in high temperatures.

“The new Ozone Converter CAP for corona surface treatment systems is designed to be both very efficient and environmentally conscious, supporting human health and safety,” said Holger Bätz, Production Manager for Ahlbrandt. “These are important values, reflected in all of Ahlbrandt’s technologies and throughout our organization.”

Archroma, a global leader in specialty chemicals towards sustainable solutions, has been recently ranked number 1 in the “industrial chemicals” list published by the Institute of Public & Environmental Affairs (IPE) for driving transparency in their supply chain.

Archroma also entered the Top 50 of companies in IPE’s Green Supply Chain CITI Evaluation, at the 47th position. The evaluation dynamically assesses brands on the environmental management of their supply chains in China.

With a wide array of products used every day, everywhere, the company is committed to operate along the principles of “The Archroma Way to a Sustainable World: Safe, efficient, enhanced, it’s our nature”. The Archroma team is therefore committed to sourcing safe and sustainable raw materials and intermediates from like-minded partners.

Heike van de Kerkhof, CEO of Archroma, recently delivered a message at the IPE 2020 Green Supply Chain Forum online, and commented: “As industry leader, we have the responsibility to keep on addressing the climate challenge, and to do everything we can together to reduce our impact on the environment. This is where the approach of the Institute of Public & Environmental Affairs supports us. They encourage us to challenge our suppliers in terms of safety, health and environment, and to go even beyond our own strict policies and processes.”

At first glance, rowing boats, the Airbus 380, safety equipment and stadium roofing have very little on common. They receive their specific properties as a result of the use of special fibers, among other things: aramid fibers and carbon fibers are processed into special yarns that are frequently deployed as compound materials. These fibers are growing in demand as the world seeks to reduce its reliance on fossil fuels; new solutions are required to reduce weight and replace heavy metallic parts.

Aramid fibers are produced in a highly-chemical process that is extremely aggressive; the acrylic precursor used to manufacture carbon fibers is a different process, but again no less difficult. In these sophisticated processes, the gear metering pumps are not only responsible for the high-precision control of the melt transport; durability, resistance within aggressive environments and cost efficiency also play decisive roles.

Special materials for special tasks
The process, the expected pump lifespan and the maintenance frequency are the decisive factors for choosing the materials from which the pumps and their components are manufactured. For optimum results, Oerlikon Barmag offers solutions that intelligently combine the various materials and the latest technologies. Whether in the case of surfaces with ceramic coatings, gears and shafts featuring DLC coatings, pumps made from cobalt alloys (StelliteTM) or robust and durable Oerlikon Barmag hybrid constructions comprising zirconium oxide ceramic and duplex stainless steel – the high-precision ZP- and GM-series pumps are design-optimized depending on the intended use. Various seal systems and customized drive concepts round off the pump program.

During the Innovate Textile & Apparel (ITA) virtual textile machinery show which will run from October 15th-30th 2020, Monforts will be emphasising its leadership position in three key fields – advanced coating, denim finishing and fabric sanforizing.

With its multi-head capability, the latest Monforts texCoat coating system provides flexibility with an unprecedented range of options and a wide range of modules available.

Refinements
“Since we acquired the coating technology that our systems are based on we have made a lot of refinements and all of them are reflected in higher coating accuracy and the resulting quality of the treated fabrics,” says Monforts Head of Technical Textiles, Jürgen Hanel.
“Our systems have the shortest fabric path from the coating unit into the stenter and we have all variations of coating application systems too – and all of these options are available in wider widths, with the engineering and manufacturing from a single source here in Europe.”

CYD
Denim finishing is meanwhile a field in which Monforts has an undisputed lead and it has been working closely with its many partners in the key denim manufacturing countries of Bangladesh, Brazil, China, India, Mexico Pakistan and Turkey to develop advanced solutions. The latest of these is the CYD yarn dyeing system.
“CYD is based on the proven Econtrol® dyeing system for fabrics*,” explains Monforts Head of Denim Hans Wroblowski. “It integrates new functions and processes into the weaving preparatory processes – spinning, direct beaming, warping and assembly beaming, followed by sizing and dyeing – in order to increase quality, flexibility, economic viability and productivity. The CYD system has been developed in response to a very strong market demand.”

Pre-shrinking
Monforts has also recently delivered a significant number of its latest Monfortex sanforizing lines to customers around the world.
Sanforizing is vital to final fabric quality, pre-shrinking it by compressing prior to washing, to limit any residual or further shrinkage in a made-up finished garment to less than 1%, for perfect comfort and fit over an extended lifetime.

As with industry-leading Montex stenters, Monfortex lines benefit from the latest Qualitex 800 control system which allows all parameters to be easily automated via the 24-inch colour touchscreen, including production speed, control of all fabric feed devices, rotation spray or steaming cylinder options, the width of the stretching field and the rubber belt pressure. Up to 10,000 separate process parameter records can be generated and stored by the data manager.

*Econtrol® is a registered mark of DyStar Colours Distribution GmbH, Germany.

Elastics for power support in medicine and the work environment
People who do physically hard work are relieved; people who are learning how to walk again after an accident or a stroke receive support; people with a handicap gain greater mobility – exoskeletons offer valuable support in many areas. An important component for "power suits": elastics by JUMBO-Textil.

Support construction with and without drive
An exoskeleton is a kind of robot that you wear: a construction of mainly textile components that is slipped over the body and strapped on. Integrated sensors register the body movements. These impulses are converted into electrically driven movements of the exoskeleton, which support or amplify the human movement. In addition, exoskeletons without drive are also being developed: these designs aim to transfer the weight of heavy tools or loads directly into the ground.

Tough requirements, individual solutions
Since the skeletons are worn on the body, the textiles and textile components used here need to be skin-friendly and as light as possible. The body's own temperature regulating systems must not be impeded. The contact surfaces must not create pressure points. And the exoskeletons must be individually adaptable to the user's body measurements.

High-tech elastics by JUMBO-Textil offer solutions for the development of exoskeletons – in terms of functionality, safety and wearing comfort: they hold, clamp, close and secure. They relieve and cushion movements and force impact. They illuminate and forward signals. The breathable narrow textiles stretch in both directions as required. They fit snugly on the body and follow every movement. Full-surface hook-and-loop-ready elastic tapes offer a simple, secure and individually adjustable fastening option. JUMBO-Textil consistently uses components made of plastic or light metal for textile components as fastening solutions. As a solution partner for demanding tasks – e.g., in occupational safety – JUMBO-Textil also developes cooled or heated textiles in collaboration with their customers. Also possible: the development of self-luminous narrow textiles – for additional safety.

• Kettelhack GmbH – a German leader in the dyeing and finishing of monochrome fabrics for high-quality and durable workwear and bed linen – has this year retired its existing Monforts sanforizing line after 35 years of daily service, replacing it with a new one.

The first line was installed in 1985 during a decisive time for the company.

Taking the helm in the early 1980s, Jan Kettelhack – the current CEO, owner and great grandson of Heinrich Kettelhack who founded the company back in 1874 – made a number of decisions that have secured its success over the following decades.

In 1982 Kettelhack had to vacate its existing plant in the city of Rheine due to urban development restrictions and despite a general sense of crisis in the European textile industry at that time, opted to relocate and build a new highly automated plant that was not reliant on mechanical and personnel-intensive processes. This was aligned with a greater focus on competitive international sales.

From 1986, the company’s proficiency as a specialist in solid-colour textiles led to workwear textiles becoming a bedrock of the business. Continuous investments in machinery and technical equipment have resulted in a fully integrated and rationalised single source site dedicated solely to what the company does best – the expert dyeing and finishing of textiles.

Crucial process steps

These stages in the textile value-added chain, Jan Kettelhack has observed, are crucial to the quality of a final product in workwear – whether it stands the test in everyday use, how comfortable it is, and how many washes it can withstand.

Central to this is the sanforizing process, which pre-shrinks a fabric by compressing it prior to washing. This limits any residual or further shrinkage in a made-up finished garment to less than 1%, to ensure perfect comfort and fit over an extended lifetime.

“We certainly can’t complain about the performance of the old Monfortex sanforizing line which gave us so many uninterrupted years of service, but certain spare parts for it were becoming increasingly hard to source, the control unit was becoming a little unstable and we couldn’t risk potential interruptions to our production schedule,” says Kettelhack plant manager Hendrik Pleimann. “In many ways, the new Monfortex sanforizer is much the same as the old one in terms of its mechanical reliability and robust construction, but of course today’s drives are much more efficient, and when it comes to the automation features and control units – and the data we can generate and analyse for increasing efficiency – that’s a whole new world.”

Qualitex 800

The two-metres-wide Monfortex line benefits from the latest Qualitex 800 control system which allows all parameters to be easily automated via the 24-inch colour touchscreen, including production speed, control of all fabric feed devices, rotation spray or steaming cylinder options, the width of the stretching field and the rubber belt pressure.

The integrated Compactomat system allows a continuous indication and control of the shrinkage values and the temperatures of the shrinking cylinder and felt calender. Up to 10,000 separate process parameter records can be generated and stored by the data manager.

Full line management can be optimised via the batch-specific calculation of all process material consumption and water and electricity use, with any standstill times analysed and immediately corrected for the future.

Any further assistance required is available via Monforts Teleservice, with direct connection to technicians and virtual access to machine analysis.

Professional

Commissioning of the new Monfortex line at Kettelhack commenced in January and it was fully operational in a relatively short time.

“This was a very professional installation provided by the Monforts team with whom we have a very good relationship dating back many years, and everyone knew what was required from both sides,” says Mr Pleimann. “Our operators have found the new line very user friendly and we are very pleased with how everything proceeded so smoothly. An unexpected benefit is that the new line is also a lot quieter, of course, which is something our operatives are appreciating.”

Key features of the Monfortex line are the proven fabric preparation, weft straightening and spreading units, prior to the compressive shrinkage machine with a 750mm shrinking cylinder, and a felt calender equipped with 2,000mm diameter drying cylinder. The line also features an integrated automatic grinding unit.

Customer service

Kettelhack is processing primarily cotton and polyester woven fabrics, with lyocell becoming increasingly popular in workwear for its softness and comfort.

As part of its customer service, the company stocks more than a million metres of grey fabric and at least 1.2 million metres of finished and rolled standard fabric in its warehouse at any one time, with a further 750,000 metres permanently in production.

While a significant cost, this commitment ensures Kettelhack customers can be fully flexible and rely on it as a partner.

“As a family-run company with around a hundred employees, Kettelhack operates very differently to bigger businesses which have to constantly consider their immediate quarterly profits,” Mr Pleimann concludes. “The thinking at Kettelhack is in terms of the next twenty years and ensuring that the business will be just as successful for the next generation as it is today. We also have a very flat organisational structure in which everyone is involved and takes an active part, which makes it a very nice place to work.”

• Technical Absorbents Limited (TAL) has developed a new grade of superabsorbent fibre (SAF) specifically for use within a new range of SAF nonwoven fabrics that are more resistant to shrinkage.

The new SAF was developed in response to the demand from the medical industry for a superabsorbent fabric suitable for use in advanced wound pad dressings. The fibre had to be capable of withstanding the moisture used in the EtO sterilization process that is frequently employed in the production of the pads, in order to ensure product safety and compliance.

EtO sterilization is a low-temperature process (typically between 37 and 63°C) that uses ethylene oxide gas to reduce the level of infectious agents. While generally applied in gas form, however, the EtO is usually mixed with other substances – and often steam.

“Obviously superabsorbents and moisture generally aren’t a good combination at this stage in processing and can cause problems,” says TAL Product Development Director Dr Mark Paterson. “Other methods can be used, but when silicone materials are included, which is more frequently becoming the case, EtO is the preferred treatment method. Regular SAF grades tend to shrink a little and can become hard, which is often not desirable. This innovative SAF grade significantly reduces such potential problems.”

The amount of shrinkage caused by EtO sterilization depends very much on the product design and construction, he adds, but in general, the new SAF has been tested and proven to reduce fabric shrinkage by around 70%. It is suitable for use in all SAF nonwoven formats, whether needlepunched, thermally bonded or airlaid.

While the proprietary process developed at TAL for the production of this new fibre and resulting fabrics was prompted by the specific requirements of wound pad dressings, TAL sees opportunities for its application in other areas as well.

“It’s an extremely flexible fibre that can be easily switched with existing SAF grades when manufacturing fabrics and we have a number of current projects in which we’re exploring other end-uses,” Mark concludes. “We believe this new range could also open up entirely new application areas on the market.”