From the Sector

With the next generation of soft and stretchable electronics, reproducible and stretchable conductive inks are playing an increasingly important role in areas such as smart textiles, medical textiles or wearables. Saralon produces a range of stretchable conductive inks including Saral StretchSilver 500 for e-textile applications.

While electronic applications integrated into textiles gain popularity, printed stretchable conductive inks emerge as a transformative alternative for the complicated approach of weaving conductive yarns and fibres.

Just like choosing the right fabric and additives is vital for smart textile development, selecting the right conductive ink matters too. There are challenges to consider, such as conductivity, ink penetration into the fabric, changes in physical properties most importantly stretchability, printing process controllability, and reproducibility. That's why research and analysis are essential when deciding on the best conductive ink for a project.

Together with the Saxon Textile Research Institute e.V. (STFI) Saralon conducted some performance tests benchmarking our Saral StretchSilver Ink against some competitor product.

Results:
Conductivity:
Saral StretchSilver 500 consistently demonstrated superior conductivity, regardless of line width.

Fluctuations at lower widths:
Both inks exhibited fluctuations at narrower printed lines, but the Alternative Ink displayed significantly higher variations.

Reproducibility Insights:
Saral StretchSilver 500 maintained stable resistance at 2mm and beyond, while the Alternative Ink noticeably struggled.

Elongation behaviour:
Saral StretchSilver 500 harmoniously coexists with the textile. Its application has minimal impact on the fabric's stretching properties, ensuring stability. The Alternative Ink, on the other hand, leads to significant changes in textile’s elongation properties. With this ink, stretching demands considerably higher forces.

The consortium of Teijin Limited, Fukui Tateami Co., Ltd., and Osaka Medical and Pharmaceutical University announced that a novel surgical patch, under the brand name SYNFOLIUM®, will be released for manufacturing and distribution by Teijin Medical Technologies Co., Ltd. on June 12, 2024.

SYNFOLIUM® is a surgical patch with knitted fabric consisting of both bio-absorbable and non-absorbable yarns, which are coated with cross-linked gelatin. After the patch is surgically implanted in the body, the patient’s tissue grows and gradually surrounds the expandable, non-absorbable portion, while the bio-absorbable portion degrades. The regenerated tissue has the potential to reduce the risk of inflammatory reactions, foreign body reactions and cell death, which often cause deterioration of the implants.

This new product is designed to be used in surgical treatment of patients with congenital heart disease (CHD). The prevalence of CHD is 1 in 100 people globally, and in Japan, it is estimated that approximately 10,000 neonates are born with the disease each year. Newborns and infants with CHD generally undergo surgeries to correct hemodynamic problems due to septal defects or narrowed blood vessels (stenosis) by implanting a medical patch, usually made from synthetic or animal-derived materials. However, over a long period after surgery, a considerable number of patients eventually require re-interventions, such as repeat surgery or catheter therapy, due to the deterioration of the implanted patch. This deterioration can be caused by an immune-mediated foreign body reaction or the development of stenosis due to the inability of the patch to stretch in response to the growth of cardiac and vascular tissue.

To address this clinical problem, Shintaro Nemoto, M.D., Ph.D., of Osaka Medical and Pharmaceutical University, created an idea for a patch that could accommodate the growth of patients’ bodies through restoration by the patient’s own tissues. In 2012, he began research and exploration to make this idea a reality.

Fukui Tateami, a pioneer in warp-knitting technology based in Fukui Prefecture, turned Dr. Nemoto’s idea into the novel concept of an expandable cardiovascular patch. Based on advanced warp knitting technology it developed over the 80 years since its founding, the company created a special knitted fabric structure to accommodate tissue regeneration.

Teijin developed the technology to coat knitted fabric with gelatin, which can prevent blood leakage and can be replaced by the patient’s own tissue. The company has been proceeding with design and development, clinical trials, establishment of a commercial production system, and application for manufacturing and marketing approval in Japan.

The development of SYNFOLIUM® has been supported by the Ministry of Economy, Trade and Industry since 2014, as well as by a program launched in 2017 by the Japan Agency for Medical Research and Development (AMED) to facilitate collaboration between medical academia and industry. Japan’s Ministry of Health, Labor and Welfare designated SYNFOLIUM® as a “SAKIGAKE” device in April 2018, providing various incentives to speed up approval for clinical use. In addition, the Japanese Society of Pediatric Cardiology and Cardiac Surgery cooperated by assisting with clinical trials and providing advice on creating guidelines for appropriate use.

Clinical trials that began in 2019 were completed in 2022, and Teijin Medical Technologies applied for manufacturing and sales approval to the Ministry of Health, Labor and Welfare in January 2023. The company received approval in July of the same year.

Going forward, Teijin and Teijin Medical Technologies, Fukui Tateami, and Osaka Medical and Pharmaceutical University will provide clinical information about this product to medical institutions to facilitate its use in patients with CHD. Teijin and Teijin Medical Technologies will continue to collect and analyze cases using SYNFOLIUM® to establish its long-term safety and efficacy.

Furthermore, to help improve the quality of life of patients with CHD around the world, the consortium plans to market SYNFOLIUM® overseas by working to gain manufacturing and marketing approval in the United States, the European Union and other countries.

• Revenue up 5.7 percent year-on-year to EUR 658.4 million
• EBITDA more than doubles year-on-year to EUR 71.4 million
• Free cash flow of EUR 87.3 million (compared with minus EUR 132.3 million in the first quarter of 2023) and thereby positive for the third consecutive quarter
• Performance program shows positive effect on revenue, EDITDA, and free cash flow
• Lenzing confirms EBITDA guidance for 2024

The Lenzing Group, a leading supplier of regenerated cellulose for the textile and nonwovens industries, recorded a further improvement in fiber sales volumes in the first quarter of 2024. An expected recovery in markets relevant for Lenzing has to date failed to materialize. Fiber prices remained at a low level. Although the costs of raw materials and energy continued to decrease, they remained higher than in the pre-crisis 2019 year.

Outlook
Even though the IMF has upgraded its growth forecast for 2024 from 3.1 percent to 3.2 percent, a number of risks remain for the global economy: potential geopolitical shocks, persistently higher inflation and key interest rates, as well as market risks emanating from the Chinese real estate market are currently considered to be the most relevant.

General inflation and falling incomes in real terms are continuing to exert a negative impact on consumer sentiment. A recovery in the consumer clothing market, which is important for Lenzing, will also depend on a further normalization of stock levels.

The currency environment is expected to remain volatile in regions relevant to Lenzing.

In the trend-setting market for cotton, a stable price trend is expected for the 2023/2024 harvest season.

Earnings visibility remains limited overall.

Revenue and earnings in the first quarter exceeded Lenzing’s expectations, despite the persistently difficult market. Lenzing is ahead of schedule with the implementation of its performance program. By appointing a separate Managing Board member, the projects identified to date are to be implemented even more rapidly, and new potentials are to be leveraged. Lenzing expects that these measures will increasingly contribute to further earnings improvement over the coming quarters compared to the first quarter of 2024.

Taking the aforementioned factors into consideration, the Lenzing Group confirms its guidance for the 2024 financial year of year-on-year higher EBITDA.

In structural terms, Lenzing continues to anticipate growth in demand for environmentally responsible fibers for the textile and clothing industry as well as the hygiene and medical sectors. As a consequence, Lenzing is well positioned with its “Better Growth” strategy and plans to continue driving growth with specialty fibers as well as its sustainability goals, including the transformation from a linear to a circular economy model.

STFI will be presenting high-end textile products and solutions at Techtextil 2024. The highlights from current research results and innovations provide an insight into the digitalisation of textile production, show applications for 3D printing and smart technical textiles and provide examples of particularly sustainably designed products as well as innovative approaches for protective and medical textiles.

The central highlight of STFI's presence at Techtextil is a robot system that demonstrates the automated processing of a bobbin frame on a small scale. The pick-and-place application demonstrates camera-supported gripping of the bobbins. The robot is part of the STFI's “Textile Factory of the Future” which demonstrates automation solutions for the textile industry in a laboratory environment.

From the field of sustainable products and solutions, a sleeping bag with bio-based and therefore vegan filling material and a natural fibre-based composite element for furniture construction, in which LEDs and capacitive proximity sensors for contactless function control have been applied using embroidery technology, will be on show. Printed heating conductor structures demonstrate current research work for the e-mobility of the future, as the individually controllable seat and interior heating should ultimately reduce weight and save energy compared to conventional heating systems.

While a protective suit for special task forces protects against the dangers of a Molotov cocktail attack, a shin guard and a knee brace with patellar ring illustrate the process combination of 3D printing and UV LED cross-linking. Other highlights from lightweight textile construction include the rib of a vertical rudder of an Airbus A320 and a green snowboard made from recycled carbon fibres.

INDA, the Association of the Nonwoven Fabrics Industry, announced the election of five new members to serve on its 2024 Board of Directors. The Board of Directors play a key role in advancing INDA’s strategic objectives, actively supporting both the industry and the membership. Their primary responsibility lies in ensuring that INDA remains responsive to the evolving needs of its members and the broader nonwovens industry, guiding the formulation of policies and programs.

The five new Board members include:

• Jaren J. Edwards, President, Stein Fibers
• Edward McNally, Sales Director Nonwoven, Oerlikon Nonwoven
• Thomas Olsen, Senior Vice President, Americas Business Area, Suominen
• Patricia A Sargeant, Vice President, Glatfelter Corporation
• Paul Wood, President, Ontex North America

The Board is comprised of elected Board Officers. One-third of the entire Board is elected each year for a three-year term by INDA’s general membership. INDA’s Executive Committee, empowered to act on behalf of the Board between meetings, consists of the Board Officers plus appointees.
The Executive Committee includes:

• Chair: Mark Thornton, Vice President, The Procter & Gamble Company
• Vice Chair: Barbara Lawless, VP of Sales and Marketing – Medical Products, Precision Fabrics Group, Inc.
• Past Chair: Bryan Haynes, Senior Technical Director for Global Nonwovens, Kimberly-Clark Corporation
• Appointee: Mike Clark, President, Filtration Solutions, Hollingsworth & Vose Company
• Appointee: Jodi Russell, Vice President R&D, Cleaning Innovation, Packaging & Sustainability, The Clorox Company
• Appointee: Jeff Stafford, Vice President of Nonwovens, Milliken & Company
• Appointee: Robert Weilminster, EVP & General Manager, US & Canada – Health, Hygiene and Specialties Division, Berry Global
• Appointee: Tom Zaiser, CEO, Indorama Ventures

More than 82 companies, businesses and social organizations – including AkzoNobel – are involved in a major Dutch research program focused on developing new technologies that will help solve some of today’s societal challenges.
 
Seven broad consortia have been established as part of the government-funded “Perspectief” program, with AkzoNobel set to play a leading role in the SusInkCoat project, which will explore how to make inks and coatings more sustainable.

The company will work together with private partners and other societal stakeholders to develop new materials, processes and applications to improve the durability, functionality and recyclability of coatings, thin films and inks. The program, which will run for the next five years, is backed by the Ministry of Economic Affairs and Climate Policy and the Dutch Research Council (NWO).

“Our discussions about collaborating with our SusInkCoat partners have been very positive,” says AkzoNobel’s R&D Director of Scientific Academic Programs, André van Linden, who is also the co-lead of SusInkCoat. “We’re all facing the same societal challenges – how to become more circular – and we’re looking for the same solutions in different application areas. But we’ve never done that together for this specific research topic, so we need an ecosystem to help us solve these challenges.
 
Van Linden adds that the program – one of many R&D projects the company is involved with – will also support AkzoNobel’s ambition to achieve 50% less carbon emissions in its own operations – and across the value chain – by 2030.
 
 “We want to make the recyclability of materials - such as furniture, building materials and steel constructions - easier by introducing functionalities like self-healing, higher durability and triggered release,” he continues. “The more you can leave the materials in their original state, the more sustainably you can operate.”

AkzoNobel will be collaborating with Canon, Evonik, GFB, PTG and RUG Ventures, who together possess extensive knowledge of market demands, supply chains and production processes. All the SusInkCoat partners will also work with academic researchers at several Dutch universities in an effort to identify promising developments that can be commercialized, used for education purposes or for outreach to the public.

Research being conducted by the other six consortia includes investigating methods to make tastier plant-based food; flat optics for more sustainable hi-tech equipment; and cheaper and more accessible medical imaging technology.

The Dutch company Knitwear Lab helps visions become reality. The creative think tank offers capacities in the areas of R&D, design, knitwear development and production of prototypes and small quantities and has thus implemented a wide range of projects in recent years. The objects range from medical products and high-tech sportswear to smart textiles with integrated sensors. Sustainability activities are also part of the repertoire, such as the production of yarns from recycled waste.

Knitwear Lab operates at two locations for its diverse tasks: Almere in the Netherlandsis available for development work. In Istanbul, there is a branch for production. Both Knitwear Lab sites each have five STOLL flat knitting machines, including models from the modern ADF range. Prototypes are produced in Almere and there is small-scale production. The production plant in Istanbul specializes in the manufacture of high-quality knitwear in small quantities. STOLL is also involved in the creative processes. For the industrial development of knitwear, Knitwear Lab offers Virtual Knitting, a revolutionary method that combines virtual and physical elements of pattern development and knitwear production to reduce waste and pre-production steps. Customers can use Virtual Knitting to create realistic, producible collections, simplify their design iteration processes and take advantage of the wide range of real-life colorways. The basis for this is comprehensive knitwear expertise, the latest 3D software and the CREATE PLUS patterning software, which was developed by STOLL together with KM.ON.

"The 3D visualization of CREATE simplifies communication with the customer considerably. We use this function every day," says Annika Klaas, Senior Knitwear Programmer. She personally appreciates the uncomplicated grading and exchange of stitch dimensions and the much faster and more efficient work with Dimensioned Shapes that this makes possible. This helps her in her day-to-day work. "We often have requests to realize the same product in different yarns, which now works much faster," says the programmer. Further simplifications would include minor optimizations in terms of the efficiency and user-friendliness of programming and additional import and export options for shapes. Discussions on implementation are already underway.

INDA, the Association of the Nonwoven Fabrics Industry, connected absorbent hygiene and personal care professionals throughout the supply chain at the ninth edition of Hygienix™, the event for absorbent hygiene & personal care markets, held in New Orleans, Louisiana, Nov. 13-16.

Senior-level leaders enjoyed presentations in these key topics affecting the future of absorbent hygiene:

• AHP Trends, Innovation & Market Statistics
• Redefining Absorbent Hygiene: Navigating Consumer Voice, Sustainable Innovations and the Circular Economy
• The Proof Is in the Pudding – Demonstrating What’s Possible in AHP
• Sustainability Inside & Out – Inputs & Packaging
• Words Matter! Shaping Consumer and Industry Thoughts
• Neither Fish nor Fowl: Designing Hybrid AHP Products
• There Be Dragons: Tales of Innovation

The winner of the Hygienix Innovation Award™ was the Sequel Spiral™ Tampon by Sequel. The Sequel Spiral™ Tampon features a proprietary spiral design that is engineered to be more fluid mechanically efficient, meaning it is designed to absorb more evenly and not leak before it’s full. In August 2023, the Sequel Spiral™ Tampon received clearance from the United States Food and Drug Administration (FDA) as a medical device and the company will now begin a series of consumer trials, with broad availability expected in Q1 of 2024.

New this year to Hygienix was Lightning Talks and pre-conference webinars. Lightning Talks are short presentations covering new trends, products and ideas in absorbent hygiene. The pre-conference webinar topics featured the new Quality Audit Program from INDA and EDANA, an in-depth look at the period care product category, and North American trends and insights in baby diapers.

Back was a hands-on workshop providing attendees with information on the various absorption systems used in disposable hygiene products. This workshop focused on the components and interaction of the absorption system in common commercial hygiene products. The workshop was led by Jim Robinson, Principal, Absorbent Hygiene Insights, LLC.

Jim Robinson received the honor of being named the 2023 INDA Lifetime Technical Achievement Award winner for his decades of technical advancements that have grown the nonwovens industry. Robinson has 33 years in the absorbent hygiene industry, including 28 years as a Technical Service Manager at BASF. Robinson has extensive knowledge of SAP applications, absorbent core formation, and hygiene article design, performance and testing.

Hygienix 2024 will be held Nov. 18-21, in Nashville, Tennessee.

The German Institutes of Textile and Fiber Research Denkendorf (DITF) will be exhibiting at the MEDICA medical technology trade fair in Düsseldorf from November 13 to 16, 2023. At the joint stand of Baden-Württemberg International, a new development will be shown, that can reduce infections during operations.

These nosocomial infections occur when surgical wounds are contaminated by microbes. They can lead to serious complications. The task of the contract development was to create a porous ring tube that reduces the risk of contamination during operations. Germ-free air is introduced into the operating field via the so-called airflow ring, thereby shielding pathogenic germs.

The tube is knitted from polyester and folded. This pleating ensures that the circular shape remains stable, but the tube is still flexible. The outside of the tube is coated so that the air is directed into the inner area of the airflow ring. The ring is attached to the skin with a biocompatible adhesive so that it fits tightly on curved areas of the body such as the face or around joints. The position of the ring can be easily changed.

The functionality of the airflow ring was successfully demonstrated in tests with nebulized colony-forming bacteria.

The tests showed that the ring also withstands significantly worse conditions than in an operating theater, e.g. in doctors' surgeries and in situations with lower hygiene standards.

After four decades in the packaging industry, the Manjushree Group is entering the Indian nonwovens market. The entrepreneurs rely on a flexible RF Smart Composite line from Reifenhäuser Reicofil to meet very different customer requirements.

The Manjushree Group operated a blown film line for packaging materials for the tea industry in the eastern part of India as early as 1983. In the years that followed, Manjushree Technopack Ltd. developed into one of the largest suppliers of solutions for rigid plastic products in South Asia - and the family business grew into a group with several business segments. In 2018, the entrepreneurial family repositioned itself: it sold its previous core business to a financial investor and established Manjushree Ventures with footholds in start-up financing, real estate business, and manufacturing - the largest of which is Manjushree Spntek as a producer of high-quality spunmelted fabrics.

Since February 2023, Manjushree Spntek has been producing high-performance spunmelts on an RF Smart Composite line from Reifenhäuser Reicofil - benefiting both from many years of experience in the packaging industry and from experience with Reifenhäuser's blown film lines. "We know a lot about plastic extrusion, for example when it comes to line operating parameters such as temperature and pressure. Processing is similar in both industries," explains Rajat Kedia. "The main difference is the distribution of the products: In plastic packaging, we had an established customer base and sold a lot of material to the big consumer goods manufacturers. The nonwovens market in India, on the other hand, is still forming, with thousands of small companies currently getting involved." These serve customers in their regions, such as hospitals.

The RF Smart Composite line is a standardized spunmelt line for smaller and emerging markets. The line produces nonwovens of the highest Reicofil quality with appropriately adapted throughput. This makes it ideally suited for applications in hygiene and medical technology and, with typically 8,200 annual production hours, it is extremely reliable. In addition, operators can start production quickly because in many cases the line can be integrated into existing buildings.

Before production could start, Manjushree built a new production building in Bidadi, a town an hour's drive from Bangalore International Airport. The building is designed to be sustainable: It uses natural light and fresh air, has comprehensive contamination control, and obtains almost all of its energy from renewable sources. Reifenhäuser Reicofil then installed, commissioned and tested the RF Smart Composite line.

Since February 2023, Manjushree Spntek has been producing high-quality spunmelted nonwovens, including ultra-soft fabrics and fabrics with special coatings for customers in the hygiene and medical industries. The material can be used, for example, for baby diapers and feminine hygiene products, but also for medical articles ranging from surgical gowns to surgical drapes.