From the Sector

Just in time for ITMA 2023 in Milan, the flat knitting machine manufacturer STOLL has launched its new collection COLOR IN KNITTING. It holds a range of knitting techniques that were ideated for novel super fine machine gauges such as the E20.

In addition, STOLL reveals its internal design workflow, showcasing how digital software tools can speed up the design process. The core of this is k.innovation CREATE DESIGN. Through the utilization of STOLL’s jointly developed design software solution, k.innovation CREATE DESIGN, in collaboration with @KM.ON, the shape and structures of a garment, can be digitally created, allowing for its simulation before it is even knitted. The interfaces to various external 3D software tools, allow for a realistic representation of the garment facilitating faster design decisions. Once the virtual knits, made in the CREATE DESIGN software are ready for manufacturing, it will be send to a knitting technician for further processing in k.innovation CREATE PLUS, This significantly speeds up product development while reducing communication issues between designers and technicians.

Sustainability and responsible handling of precious natural resources were key factors driving the development of the latest trend collection, COLOR IN KNITTING. STOLL-knit and wear®, a technique that stands for seamless knitted garments, can play a significant role in reducing waste. In addition, fewer process steps are required in the production chain - with advantages for production efficiency.
For another highlight of COLOR IN KNITTING, the STOLL creatives have worked on imitating different yarn effects with knitting technology such as slub yarn optics or the simulation of fabrics like crepe de chine/crepe georgette

On the occasion of the 150th anniversary of STOLL, COLOR IN KNITTING features a selection of vintage pattern replicates. These patterns can be found in STOLL’s extensive sample archives in Reutlingen. It is impressive to learn that all these former fabric constructions can still be replicated today and also reinvented with todays machine features. This approach showcases the steep progression of technical advancements over the past 150 years.

STOLL´s latest trend collection culminates in the creation of an invaluable resource: the book “Color in Knitting: By Designers, for Designers”. This publication aims to cater to a diverse audience by presenting a comprehensive guide to designing with colors using various flat knitting technologies and will be presented in the chapter "Book release".

From April 25^th to 27^th, 2023, the Institute of Textile Machinery and High Performance Material Technology (ITM) of TU Dresden will be exhibiting at the pavilion SAXONY! at JEC World 2023.

The ITM will provide a comprehensive overview of its current research in the field of machine and product development along the entire textile process chain.

The upcoming JEC 2023 exhibition will highlight innovative Customised Connective Cores (CCC), which are custom-made core-insert structures additively manufactured using cellular metal and a form-fit integrated insert. These CCCs can be seamless integrated either as patches or as full-surface core material into lightweight panels, offering significantly improved load-bearing behavior (especially 4 times the load-bearing capacity and fail-safe behavior) compared to existing technologies. This breakthrough opens up new possibilities for fastening lightweight panels.

Another highlight at the exhibition is the repair process for fibre-reinforced composites (FRP) developed at the ITM. Instead of mechanically grinding the damaged area, the matrix in the repair area is locally dissolved using a UV-rays-induced depolymerisation process. Damaged fibres can thus be replaced by a customized repair patch. Free yarn ends on the textile repair patches are spliced with the UV-exposed yarn ends in the repair area using an adapted splicing process. In this way, a very clean, simplified and mechanically improved repair area can be achieved compared to the state of the art.

The diverse possibilities offered by the structure and process simulation of textile high-performance materials and textile manufacturing processes will also be presented. By means of multi-scale modelling and simulation, a profound understanding of materials and processes is achieved at the ITM. Finite element models on the micro, meso and macro scale have been developed and validated for this purpose. Examples from current ITM research projects demonstrate the various possibilities and areas of application of modern simulation methods in the field of textile technology.

Moreover, an innovative process for the integral manufacturing of 3D rib-stiffened preforms with complexly arranged stiffeners in 0°, 90° and ± 45° orientation was developed and successfully implemented at the ITM. Due to the process-integrated structure fixation and the continuous fibre reinforcement between shell and rib structure, the 3D preforms are perfectly suited for the production of highly load-bearing FRP components with increased bending stiffness, which will be exhibited at JEC. Hence, the lightweight construction potential of high-performance fibres can be fully exploited.

A successfully established development are partially flowable 2D textile reinforcement fabrics that are continuously manufactured in one single process step. For this purpose, the entire process chain was developed at the ITM, which allows a cost-effective and high-volume production of load-bearing thermoplastic 3D FRP components with continuous fibre reinforcement between shell and stiffeners.

At JEC 2023, the ITM will also present a partially embedded textile latice girder as reinforcement for carbon concrete applications, which was produced by means of an innovative textile manufacturing process based on the multiaxial warp knitting technology. Through the development of a customized warp insertion, manipulation and take-off system as well as appropriate shaping methods, it is now possible to produce tailored textile semi-finished products, e.g. for use in wall and ceiling panels. These textile latice girders represent a resource-saving alternative to conventional steel girders due to the reduced among of concrete required and the additional cavity for media and cable guidance.

The integration of textile actuators and sensors in FRP provides structures with additional functionalities. The research and application of such interactive FRP with different matrix materials (e.g. with thermoset, elastomer or concrete matrix systems) for structural health monitoring or adaptive systems is one of the key research areas of the ITM.

Moreover, the development and implementation of innovative yarn constructions based on recycled high-performance fibres (e.g. rCF, rGF, rAR) for sustainable FRPs is successfully promoted at ITM. By use of a special carding machine, recycled fibres are opened up, separated and joined to form a wide, uniform ribbon. Subsequently, innovative hybrid yarn constructions made of evenly mixed recycled high-performance and thermoplastic fibres with variable fibre volume fractions can be manufactured by means of various spinning technologies. Selected yarn constructions and components will be showcased at JEC.

• Longer parking times for greater efficiency

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

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

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

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

Kornit Digital LTD. (NASDAQ: KRNT) ("Kornit" or the "Company"), a market leader in sustainable, on-demand digital fashion and textile production technologies, announced its partnership with VORN – The Berlin Fashion Hub, Zalando, and Unity – creating an "alliance of the willing" to transform the industry via "phygital" fashion with a circular approach.

Nine designers were challenged to create fashion capsules in eight weeks utilizing the latest technology innovations from the three alliance partners – combining digital product creation, web3-based design, digital printing, immersive circular design, 3D rendering and avatar development. All collections are on display exclusively at Berlin Fashion Week from Wednesday, January 18 to Friday, January 20 at Bikini Berlin.
 
The challenge follows standing room only Kornit Fashion Week events across the globe, displaying how on-demand, digital production creates a fashion world of nearly endless creativity. Hosted at the Impact Hub Berlin, the VORN Academy Program offered creators access to a holistic technology toolset - including the advanced Kornit Presto MAX single-step solution for direct-to-fabric sustainable printing. Some of the prominent designers taking part include costume and fashion designer Alexis Mersmann, Judith Bondy, AR and NFT artist Ann-Britt Dittmar, Berlin-based director Tanja Bombach, Nina Jurcic, Olga Boncheva, digital artist, and fashion designer Schirin Negahbani, Johann Erhardt, and Israeli designer Idan Yoav.
 
"This collaboration across four industry leaders is so unique because the result is a sum so much greater than each of its individual parts. It's a true 'alliance of the willing' that opens doors to 'phygital' collections built at the intersection of digital fashion, 3D design, and on-demand production," said Omer Kulka, Chief Innovation Officer at Kornit Digital. "We're honored to team with VORN – The Berlin Fashion Hub, Zalando, and Unity during Berlin Fashion Week to demonstrate what's possible as the physical and virtual fashion worlds come together."
 
"When we launched the Berlin Fashion Hub, our intent was to create a B2B environment to spark unmatched fashion and sustainability innovations. As Berlin is one of the world's most important fashion and textile centers, there is no better place to demonstrate economically succesful circularity in the fashion industry," said Professor Marte Hentschel, Co-Founder at VORN – The Berlin Fashion Hub. "Together, we're changing fashion to drive sustainability and harness the creative power of both the physical and virtual. We're proud of what's been accomplished in conjunction with an incredible group of designers, creators, and partners."

• Building Leadership Position in Luxury Market

Oerlikon announced that it has signed a definitive agreement to acquire Riri, a leading provider of coated metal accessories for the luxury fashion industry. This transaction marks a milestone in Oerlikon’s growth strategy and diversifies Surface Solutions’ offerings and market access. The transaction is expected to close in the first quarter 2023, subject to regulatory approvals and standard closing conditions.

“Riri is highly complementary to our existing luxury business and will reinforce our fashion jewelry and metallic components for leather goods. It is the ideal next step after our acquisition of Coeurdor in 2021 and will make us a market leader and an integrated provider with a complete offering of coated luxury metalware for high-end fashion brands,” said Michael Suess, Executive Chairman, Oerlikon. “The acquisition will drive cross-selling and strengthen our footprint in the global luxury metalware market, which sees mid- to-high single-digit growth rates annually.”

“Our portfolio, particularly in zippers and buttons, is an excellent fit to Oerlikon’s strengths in coated metal-based fashion components. Together, we are ideally positioned in Italy and France – the two major European fashion hubs – and can provide a complete offering to fashion customers,” said Renato Usoni, CEO, Riri. “We are excited to join Oerlikon as it will allow us to accelerate the luxury goods industry’s sustainability transition to greener technology by applying technologies such as Oerlikon’s PVD¹.”

Riri, headquartered in Mendrisio, Switzerland, is a market leader in metal accessories manufacturing, with a wide product range and unique offering. The company supplies global leading brands in the luxury fashion industry and has a strong foothold in the Italian luxury market. The company has more than 1 100 employees and expects to generate sales of EUR ~170 million (CHF ~165 million) in 2022.

¹ PVD, or physical vapor deposition, coating is a thin-film coating solution that is more environmentally friendly than traditional processes such as chrome plating.

BTMA member Sellers Textile Engineers is marking its 110th anniversary this year with the introduction of a new concept in carpet shearing, as the essential final step in ensuring tuft uniformity and ‘just new’ freshness in finished carpet rolls.

The company has for many years offered two options in the construction of its shearing cylinders – the first, namely the ‘strap-on’, incorporates spiral blades bolted to the cylinder body and the second, known as the ‘caulked-in’, includes spirals which are fixed very securely in a machined groove within the machine.

The new Sellers’ Hybrid Shearing Cylinder combines the benefits of both, resulting in an improved cut and finer finish, in addition to longer repeatable finishing and increased rigidity.

“The Hybrid Shearing Cylinder has all the advantages of the ‘strap-on’ spiral blade to provide a sharper and cleaner cut, along with enhanced rigidity which significantly lengthens the intervals between the necessary regrinding of the blade,” explains Sellers Director Neil Miller. “We currently have six Hybrid Shearing Cylinders operating in the field and the earliest, which has been installed in both No1 Head position, where the majority of the shearing operation and heaviest cut is performed, and also in No3 Head, where the sharper cutting angle has resulted in a much improved surface quality.”

Sellers shearing machines have led the field in carpet finishing for many decades, enabling the leading manufacturers to stay competitive by enabling the highest quality of finish to be achieved economically and efficiently.

The latest advanced features of these machines include a load cell tension control drive system, an automated touchscreen for easy operator control and fault diagnosis, an enhanced cleaning system including cylinder and blade separation and fully controllable pivoting beds. Further options include thickness monitoring, seam detection and metal detection systems.

“The Hybrid Shearing Cylinder will become standard on our latest machines and also be made available for retrofitting, to provide significant benefits to our existing users,” says Miller. “All of our equipment is designed, manufactured, assembled and tested at our plant in the UK, and as one of the few remaining European engineering companies to make all of our components in-house – with now over a century of accumulated know-how – flexibility in design allows our finishing solutions to be targeted to specific customers and their product requirements. Aligned to this is a lead in process control systems which ensure the accurate control, reliability and repeatability of the processing parameters on all of our machines.”

Sellers remains committed to providing complete finishing solutions for all carpet, tile and artificial grass products. Its range includes machines for tufted secondary backing, both conventional, powder and extrusion lamination, Wilton and Axminster products, artificial grass and foam lines, coating lines for bitumen, PVC, PU and other polymers, as well as shearing for all carpet products.

Ongoing developments on the company’s coating and drying lines have resulted in improved guiding and product tension control as well as dryer efficiency, reducing heat loss and optimising energy use. These include a re-design of the fan pressure boxes and impingement nozzles to increase airflow efficiency, modulating gas burners and introducing easy clean, accessible filters.

In addition, the proven dual zone system has been enhanced, giving a temperature differential of up to 80°C between top and bottom zones. Dryers can be heated by either gas or steam and operation and access have been simplified with controls via touchscreen and PLC.

An extensive range of ancillary equipment is available to provide maximum flexibility to cover product requirements, for both new processing lines and as upgrades to existing equipment.

“Carpet manufacturing is now based on well-established, tried and trusted processes and it’s rare for new innovations to be introduced into this sector,” says Jason Kent, CEO of the British Textile Machinery Association. “The new Sellers Hybrid Shearing Cylinder can provide a competitive edge for manufacturers which is currently being proven in the field. It’s one of a number of new innovations the company is planning to showcase at next year’s ITMA exhibition in Milan.”

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.

• Kornit Digital Introduces High-Volume Digital Production Solution for Vibrant Decorative Designs on Polyester and Polyester-Blended Apparel
• Kornit Atlas MAX Poly to Transform Professional and Recreational Sportswear, Teamwear, and Sports Brands; Injecting Life into Apparel with Power of Design Across Full Color Gamut

Kornit Digital Ltd. (NASDAQ: KRNT) (“Kornit”), a worldwide market leader in sustainable, on-demand digital fashionx and textile production, introduced today its distinctive Kornit Atlas MAX Poly system – an industry-first direct-to-garment (DTG) solution delivering superior-quality digital decoration for vibrant, colorful design on polyester and poly-blended apparel.

Kornit’s Atlas MAX Poly capitalizes on the demand for fashionable, unique sportswear and apparel. As the industry emerges from a post-pandemic environment in which athletic and leisurewear became mainstream, there is increasing demand for apparel combining polyester and poly-blends with vivid designs across a range of colors. Atlas MAX Poly can transform the multi-billion-dollar professional and recreational sports apparel and teamwear markets, limited today by limitations in mass customization of polyester.

“Kornit Atlas MAX Poly is a game-changer,” said Omer Kulka, Chief Marketing Officer at Kornit Digital. “As fashion and sports apparel merge, there’s new opportunity for innovative fashion on polyester, currently the fastest-growing textile vertical. For the first time, recreational sportswear, promotional, and sports brands can embrace vibrant and colorful design with Kornit’s proven MAX technology – setting superior quality standards for on-demand production previously not possible.”

Unveiled during Kornit Fashion Week Tel Aviv 2022, Atlas MAX Poly incorporates Kornit’s field-proven MAX technology for high-quality premium decoration, process automation, and smart autonomous quality control. With Kornit’s XDi decorative applications, Atlas MAX Poly enables endless designs and creativity on polyester, and empowers new styles for multiple effects and unlimited combinations such as emulating threadless embroidery, high-density vinyl, screen transfer emulations, and 3D effects.

The solution is compatible with mesh and plain fabrics, including brushed polyester, while maintaining durability and breathability. It brings the highest throughput for on-demand polyester decoration, reducing total cost of ownership to drive profitability. Customers gain competitive advantage via Pantone color-matching and a wide color gamut including neon colors for bright and vibrant impressions, using single-step mechanisms minimizing production footprints while maximizing versatility.

Beyond superior quality, graphics, color, and application variety, Kornit Atlas MAX Poly offers efficient, reliable, profitable end-to-end polyester production via:

• Kornit’s ActiveLoad automated garment-loading and pallet adjustment for repeatable, high-quality output with minimal errors reducing time and waste, eliminating operator ramp-up and boosting throughput up to 20%.
• Seamless integration with KornitX Global Fulfillment Network, enabling a pixel-to-parcel-to-doorstep experience. This unleashes untapped demand for polyester short-run production, personalization, and disruptive direct-to-fan and direct-to-recreational business models.
• Integration with KornitX’s workflow ecosystem and Kornit Konnect™ dashboard, optimizing process visibility and control, adding data-driven insights for production floor efficiencies.

• Patterning from the cloud
• SwapKnit – KARL MAYER's first Smart Machine function revolutionizes the way of guide bar control

A view of machine data from anywhere and at any time, service support as if on site but from far away, patterning from the cloud: digitalization offers completely new possibilities in warp knitting, which KARL MAYER is using to offer its customers a wide range of advantages for their business. In doing so, the world market leader is pursuing a well thought-out strategy: coordinated innovation activities are being used above all to rethink aftersales support and machine maintenance, and to develop coordinated offers in three areas. These are Care Solutions, Digital Solutions and Smart Machine.

Smart Machine comprises special functions that are backed by KARL MAYER's expertise and enable customers to maximize their productivity. In addition, a previously unattainable reproducibility of quality is possible.

A first solution for this is SwapKnit. The new patterning concept manages completely without pattern discs, but still enables the high operating speeds typical of mechanical guide bar drives. The basis for this is the networking of the machine via the k.ey device with the KM.ON cloud.

• Speed of operation and pattern change
• Lapping procurement per individual purchase or flat rate
• Best article reproducibility

Further steps to follow
As the first Smart Machine offering, SwapKnit marks the start of digital innovations with which KARL MAYER offers its customers more benefits from its machines. Further innovations will follow.
"In our development activities, in addition to the important topics such as more speed and flexibility, we also have simplified handling and the possibilities of automation in mind. We want maximum efficiency with minimum operating effort," says Kay Hilbert.

Zünd has evolved into a complete solutions provider in cutting/finishing workflows and automation. The market leader in digital cutting systems offers customers tailor-made workflow solutions for every step of digital production. In recognition of the wide-ranging benefits and exceptional price-performance ratio of these software solutions, a jury of experts from the European Digital Press Association EDP awarded them the distinction of «Best in Class».

Zünd receives EDP awards for three of its software tools. The jury declares PrimeCenter the «Best Workflow Solution», while the Pick&Place Interface Option and the Visualizing Option are recognized as «Best in Robotics» and «Best Print Support Tool», respectively.

Zünd is known worldwide for its advanced, high-performance digital cutting systems «made in Switzerland». For some time now, the Swiss manufacturer has also been making a name for itself with user-friendly automation software such as PrimeCenter for prepress, as well as the Visualizing Option and the Pick&Place Interface Option for digital production. The latter are two highly effective solutions for removing/unloading cut parts, offering visual support and robot integration, respectively. On account of its exceptional know-how and consulting expertise,

• PrimeCenter automation software serves as control center for creating print & cut files and enables a highly efficient and productive prepress workflow. In a few clicks, users create fully nested print & cut jobs.
   
• The Pick&Place Interface Option lets Zünd Cut Center – ZCC control a robotic device, enabling fully automated parts removal—picking, sorting, and placing at pre-defined locations.
   
•  The Visualizing Option provides visual support for parts removal. Cut parts are labeled via projection or monitor. The user is able to see at a glance which parts belong to which job and can apply labels for continuous Track&Trace.

For more than ten years, EDP has been evaluating products and developments in the graphics industry for excellence and for commendation through an evaluation process involving the EDP technical committee, a jury of experts, and finally, a general award assembly of EDP members.