From the Sector

Many people across the world are bedridden – be it due to illness, an accident or old age. Because those affected often cannot move or turn over by themselves, they often end up with very painful bedsores. In the future, it should be possible to avoid bedsores with the help of materials that can be programmed to entirely adapt their form and mechanical properties. For example, the body support of mattresses made from programmable materials can be adjusted in any given area at the push of a button. Furthermore, the support layer is formed in such a way that strong pressure on one point can be distributed across a wider area. Areas of the bed where pressure is placed are automatically made softer and more elastic. Caregivers can also adjust the ergonomic lying position to best fit their patient.

Materials and microstructuring
Materials for applications requiring specific changes to stiffness or shape are being developed by researchers from Fraunhofer CPM, which is formed of six core institutes with the aim of designing and producing programmable materials. So, how can we program materials? “Essentially, there are two key areas where adjustments can be made: the base material – thermoplastic polymers in the case of mattresses and metallic alloys for other applications, including shape memory alloys – and, more specifically, the microstructure,” explains Dr. Heiko Andrä, spokesperson on the topic at the Fraunhofer Institute for Industrial Mathematics ITWM, one of the Fraunhofer CPM core institutes. “The microstructure of these metamaterials is made up of unit cells that consist of structural elements such as small beams and thin shells.” While the size of each unit cell and its structural elements in conventional cellular materials, like foams, vary randomly, the cells in the programmable materials are also variable – but can be precisely defined, i.e., programmed. This programming can be made, for example, in such a way that pressure on a particular position will result in specific changes at other regions of the mattress, i.e., increase the size of the contact surface and provide optimal support to certain areas of the body.

Materials can also react to temperature or humidity
The change in shape that the material should exhibit and the stimuli to which it reacts - mechanical stress, heat, moisture or even an electric or magnetic field - can be determined by the choice of material and its microstructure.

The journey to application
A single piece of material can take the place of entire systems of sensors, regulators and actuators. The goal of Fraunhofer CPM is to reduce the complexity of systems by integrating their functionalities into the material and reducing material diversity. We always have industrial products in mind when developing the programmable materials. As such, we take mass production processes and material fatigue into account, among other things,” says Franziska Wenz, deputy spokesperson on the topic at the Fraunhofer Institute for Mechanics of Materials IWM, another core institute of Fraunhofer CPM. The initial pilot projects with industry partners are also already underway. The research team expects that initially, programmable materials will act as replacements for components in existing systems or be used in special applications such as medical mattresses, comfortable chairs, variable damping shoe soles and protective clothing. “Gradually, the proportion of programmable materials used will increase,” says Andrä. Ultimately, they can be used everywhere – from medicine and sporting goods to soft robotics and even space research.

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

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

From 7 – 9 December 2022, Cinte Techtextil China will welcome visitors sourcing solutions for 12 application areas of technical textiles and nonwovens at the National Exhibition and Convention Center in Shanghai.

A number of countries and regions are represented at the fair’s International Zone, with companies from Austria, Belgium, France, Germany, Hong Kong, Italy, the Netherlands, Spain, Sweden, Switzerland, Taiwan, and the US. Standout international exhibitors include:

• TESTEX, an international, independent Swiss institute which specialises in the testing and certification of textile and leather products. The organisation is a founding member and official representative of the OEKO-TEX® Association, and will present their certification services at the fairground.
• Cotton Council International (CCI) is a non-profit trade association that promotes US cotton fibre and manufactured cotton products, with their COTTON USA™ Mark. At this year’s fair they will showcase cotton spunlace fabric, wipes, kitchen tissues, facial masks, cosmetic removers, and more, with their products particularly applicable to Agrotech, Clothtech, Medtech, and Sporttech.
• Graf + Cie AG is a subsidiary of the Rieter Group, and a leading supplier of clothing for carding and combs for combing machines in the short- and long-staple spinning industry. This year, the Swiss company will showcase stationary flats, and metallic card clothing for roller cards.
• At the returning German Pavilion, buyers can source sought-after technical textiles and nonwovens that are renowned for their quality. The companies and expertise on display at this pavilion are endorsed by the Federal Republic of Germany, with several exhibitors highlighted below:
• Brückner Textile Technologies GmbH & Co KG has developed machinery for the textile industry since 1949. Today, the company offers complete line systems for the dry finishing of both woven and knitted fabric, as well as for technical textiles, glass fibres, and floor coverings.
• Perlon (Zhejiang) Co Ltd is part of a global group of companies that specialises in the manufacture of synthetic filaments, with factories in China, Germany, Poland, and the US. Their products have a diverse range of potential uses, largely categorised in the Agrotech and Indutech application areas.
• IBENA Textilwerke GmbH produces various functional fabrics for Protech. At the fair, the company will be showcasing insulative, flame retardant (FR) textiles for firefighting and search & rescue services. Developed with DuPont™ aramid material, their FR properties will not diminish after washing or repeated use.

This year’s fair also sees the return of the Taiwan Zone. With support from the Taiwan Nonwoven Fabrics Industry Association, the area will showcase a range of industry leading nonwoven products and services, by brands such as KNH Enterprise, Nan Liu Enterprise, Unique Pretty Ind, and Web-Pro Corporation.

As a world’s largest manufacturer of technical textiles, China is home to a vast array of companies responsible for innovative products. Some domestic exhibitors to look out for are:

• CTA Hi-Textiles Co Ltd, a high-tech enterprise controlled by China Textile Science Research Institute. In recent years, the company has developed several new textile composite materials, and their products are widely used in sectors such as national defence, policing and public security, medical protection, and engineering and manufacturing.
• Sateri is one of the world’s largest producers of viscose fibre, with an annual capacity of 1.8 million metric tonnes. At their mills, they make yarn and fibre products applicable to sectors such as beauty, hygiene and personal care, medical, wipes, and protective wear.

To help international buyers stay connected with the Chinese market, Match Plus, the fair’s online business matching platform, will support foreign buyers achieve their sourcing goals despite travel limitations. Further information on Match Plus will be available at a later stage.

The fair’s product categories cover 12 application areas, which comprehensively span a full range of potential uses in modern technical textiles and nonwovens. These categories also cover the entire industry, from upstream technology and raw materials providers to finished fabrics, chemicals and other solutions.

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.

New ideas were exchanged, brainstormed, and discussed freely at members’ booths at the Swiss Textile Machinery Pavilion during the recent Techtextil in Frankfurt. “Customers and researchers met Swiss textile machinery companies to explore the possibility of the not-yet-invented. “We regard our Pavilion as the place where future innovations catch a spark,” says Cornelia Buchwalder, Secretary General of the Swiss Textile Machinery Association. Further developments in the field of hybrid yarns were a hot topic. One example of this involves producing a yarn which has all the typical characteristics and advantages of carbon – but which also prioritizes careful use of resources, combining carbon fibres with thermoplastics.

Technical textiles cover a vast range of applications, and it’s still growing thanks to intensive research by specialist institutes and universities. Many members of the Swiss Textile Machinery Association maintain long-standing partnership with such bodies. Innovations are often joint efforts.

Feel-good technical fabrics
Some technical textiles feel like a second skin. A well-known example is activewear from the ‘sport tech’ field. Activewear includes breathable clothing, usually consisting of a three-layer-laminate: an inner lining, a breathable membrane in the center, and an outer fabric. The challenge is to bond the individual layers without losing breathability or softness, while meeting technical requirements such as resistance to a number of wash cycles.

Bonding solutions meeting top quality requirements, as well as ambitious standards for environmental protection and sustainability, were reinvented by the Cavitec brand from the Santex Rimar Group. This company’s hotmelt technology uses one-component polymers applied to textiles in a hot, molten state. Bonding based on hotmelts is both water- and solvent-free. Drying and exhaust air cleaning are not necessary, which is an ecological advantage. Energy consumption is also significantly lower. Cavitec hotmelt technology is also developed for laminated medical protection fabrics which are safe, high-quality and sustainable. These fabrics can be washed, sterilized, and used again.   

A second skin with added value is the result of Jakob Müller Group’s cooperation with an institute for an established outdoor fashion brand. They have devised a heating mat applied as an inner jacket. Outdoor gear with a heated inlay offers the wearer a comfortable feeling even in a cold climate. The heating mat is particularly light, breathable, flexible and adjustable to three temperature levels.

Fabrics with these advantages are now possible thanks to multi direct weaving (MDW) technology from the Jakob Müller Group. A lacquer-insulated heating strand is inserted into the base textile as a ‘meander’ using MDW technology. The technology is offered with both label weaving machines and the latest generation of ribbon weaving machines. The textile pocket calculator is another MDW based future-oriented application developed in cooperation with a textile research institute.

Safety and health
Life-saving reliability is a must for vehicle airbags. They have to fulfil high security aspects, and must remain inflated for several seconds when an accident occurs. Airbags made of flat-woven fabric – cut and seamed – can show weakness at seams during the inflation phase. Latest Jacquard technology by Stäubli enables one-piece-woven (OPW) airbags to be produced, creating shape and structure in a single process. The final product is an airbag consisting of a sealed cushion with woven seams. OPW airbag weaving reduces the number of production steps, and increases the security aspects.
Another big advantage of Stäubli’s new weaving technology is the flexibility in formats required in today’s mid- and upper-range cars, where lateral protection (in the seat or in the roof over the door) has become standard and is designed in line with the car shape. Safe airbags are woven on modern high-speed weaving machines. The warp material, the variety of fabric patterns, and the importance of precisely shaped airbags require the use of a robust and reliable Jacquard machine.

A revolution for orthopaedic patients is a knitting machine from Steiger Participations, which uses compressive yarns developed to meet the needs of the specific health market. This machine model was exclusively designed for production with inlaid elastic yarns and offers optimum performance with guaranteed final product quality.

In the orthopaedic field, many Steiger flat knitting machines have already been operating as automatic, custom-made production systems. For example, the dimensions of an injured limb are taken by the doctor and fed into a web-based application. The doctor selects the compression class in the various sections of the item and a data file created by the software automatically applies a preconfigured program. With no human intervention required, the program is generated and produced on the machine, precisely matching the patient’s dimensions. Each product is different, and generally available within 48 hours.

International technology group ANDRITZ will be presenting its innovative nonwovens production and textile solutions at Techtextil in Frankfurt from June 21 to 24. The ANDRITZ product portfolio covers state-of-the-art nonwovens and textile production technologies, such as air-through bonding, airlay, needlepunch, spunlace, spunbond, wetlaid/WetlaceTM, converting, textile finishing, recycling, and natural fiber processing. For Techtextil, special focus lies on technologies for textile recycling, needlepunch, airlay, wetlaid glass fibers and textile calendering.

TEXTILE RECYCLING TECHNOLOGIES BASED ON TEARING
With the acquisition of ANDRITZ Laroche SAS, ANDRITZ has expanded its product portfolio to include airlay and recycling technology as well as bast fiber processing technologies. Complete recycling lines for post-consumer and industrial textile waste to produce fibers for re-spinning and/or nonwoven end-uses are one focus of this product range. Customer awareness and regulations are forcing clothing brands to recycle their textile waste in their own products. Recycled fibers can also be used in the nonwovens industry for various applications, for example in the automotive industry, for insulation, mattresses, and furniture felts.

ANDRITZ Laroche offers a complete process range of tearing lines from 50 up to 3,000 kg/h, which can be used for almost all types of pre/post-consumer textile waste. The aim is to preserve the character of the original fibers, for example cotton, by maximizing fiber length, strength and feel.

Reifenhäuser Cast Sheet Coating - specialists for cast film, sheet extrusion and extrusion coating lines - will showcase a new production process for cost-effective film/nonwoven composites with an exceptionally low grammage at ICE (International Converting Exhibition) Europe. The leading international trade show for paper, film, and foil conversion and processing will be held at Messe München (Munich trade fair center) from March 15-17, 2022.

The Covid-19 pandemic and current supply shortages have exposed the dependence of companies on global supply chains. This situation is both a warning signal and an opportunity to boost and reorganize the local production of semi-finished products from the ground up. Reifenhäuser Cast Sheet Coating has now developed a trend-setting production process termed Ultrathin Coating, in particular for the sector of medical protective clothing. The process will permit customers to produce particularly lightweight film/nonwoven composites with greater cost efficiency and, as a result, more competitively. The patent-pending process has several advantages: It cuts film grammage by 66%; material consumption in the overall composite is reduced by 28%; and it slashes costs by up to 34% compared to conventional semi-finished products. Significant cost savings are achieved in various ways, for example, by replacing hotmelt adhesives, which reduces line maintenance to a great extent at the same time.

Mark Borutta, Sales & Marketing Specialist bei Reifenhäuser Cast Sheet Coating, erklärt: „Wir erleben derzeit einen nachhaltig wachsenden Mehrbedarf für medizinische Schutzbekleidung verbunden mit einer Rückholstrategie für lokale Produktionskapazitäten. Vor diesem Hintergrund erzielen Produzenten mit ‚Ultrathin Coating‘ einen schnellen Return on Invest und hohe Profitabilität – auch bei einer Produktion innerhalb Europas.“ Die Vlies-erfahrene Schwesterfirma Reifenhäuser Reicofil –führender Hersteller von Vliesstoffanlagen – hat die Entwicklung unterstützt.

Mark Borutta, Sales & Marketing specialist at Reifenhäuser Cast Sheet Coating, explains: "We are currently experiencing a sustained increase in demand for medical protective clothing combined with a return strategy for local production capacity. Against this backdrop, producers achieve a fast return on investment and high profitability with Ultrathin Coating - even when production is based in Europe." The sister company, Reifenhäuser Reicofil, an experienced and global leading manufacturer of nonwoven lines, provided their support to the development.

Even if manufacturers already produce medical protective clothing and prefer to handle the coating process internally in the future instead of importing the necessary composites, it is worthwhile to set up an in-house production facility. In either case, the investment in Ultrathin Coating usually pays for itself in less than 12 months. The lower material input also reduces the consumption of fossil raw materials and this in turn responds to the increased demand for more sustainable products.

Reifenhäuser Reicofil will exhibit at the world's leading nonwovens trade show INDEX in Geneva from October 19 to 22, 2021. Under the slogan "Living Nonwovens", the nonwoven line specialist will showcase solutions for the production of sustainable nonwovens for a wide range of applications.

Sustainable nonwoven production starts with the amount of material used - the less raw material needed, the better. The "Reicofil 5x" line series is specialized in this application and achieves fabric weights of 8 gsm (grams per square meter) or even less through efficient downgauging, even on 1000 m/min Composite lines containing 3 Spunbond beams.

In addition, Reicofil customers can reduce the use of fossil raw materials on request by processing biobased raw materials as an ecological alternative - for example for diapers. The topsheet material, made of bulky, soft, and industrially compostable high-loft nonwovens, meets maximum hygiene requirements at the same time.

For industrial applications, high-strength nonwovens can be processed even from up to 90% PET flakes from post-consumer waste. This is how Reicofil shows ways to combine sustainability and high-performance nonwovens.

In the medical sector, the line manufacturer will also be exhibiting its leading solutions for high-barrier medical protective clothing. In addition, meltblown nonwovens for face masks - still in great demand in many regions due to Covid - provide reliable safety and are helping to combat the pandemic worldwide. Reicofil technology therefore guarantees maximum safety, with filtration efficiencies of up to 99% (N99 / FFP3 standard), minimum quality fluctuations, and extremely high line availability at the same time.

With the current RF5 machine generation, Reicofil also sets benchmarks in terms of quality, performance, availability, efficiency, and machine intelligence - for challenging applications in hygiene, medical, and industrial sectors.

Kornit Digital, specialised in digital textile printing technology, announces Johannesburg, South Africa-based apparel decorator Vic Bay Apparel has implemented two Kornit Storm HD6 systems for sustainable, single-step production on demand. This installation answers increased demand for small orders and high-colour graphic designs, resulting from a dramatic growth in their e-commerce operation.

Vic Bay Apparel has been a manufacturer, supplier, and wholesaler of basic t-shirts and golf shirts for 25 years, supplying blank apparel to decorators and resellers of promotional clothing. They predominantly service resellers in the tourism, workwear, printing, embroidery, and advertising markets.

The Biden Administration has awarded two contracts to National Council of Textile Organizations (NCTO) members Parkdale Mills and Ferrara Manufacturing Inc., following through on the President’s pledge to procure millions of fully Made in America face masks for community health centers, food pantries and soup kitchens across the country.  A third contract is expected to be awarded to a small business early next week.

North Carolina headquartered Parkdale Mills, the nation’s largest cotton yarn spinner, has partnered with Ferrara Manufacturing, a tailored clothing company based in New York City’s garment center whose workforce is union represented by Workers United/SEIU, to manufacture over 17 million reusable masks. The government said it could purchase up to a maximum of 22.2 million masks under the two contracts announced today. The masks will be Berry compliant and thus 100% U.S.-made.

Ferrara Manufacturing and Parkdale Mills will contract with additional U.S. companies across the manufacturing supply chain, employing nearly 5,000 American workers as a result of these awards.  Parkdale will be utilizing yarn from their facilities in NC, VA, and GA and Ferrara will deploy their cut and sew operations in New York City.

The U.S. textile industry has produced over a billion lifesaving PPE and other medical products over the last year.  Since the spring of 2020, both Ferrara and Parkdale have retooled their production chains to help produce millions of masks and gowns to help workers on the frontlines.