From the Sector

At Techtextil from 21-24 June in Frankfurt, Mahlo will be demonstrating how manufacturers of technical textiles can optimise their production even further using measuring and control technology.

Special straightening technology for technical textiles
Mahlo's range also includes solutions for straightening distorted goods. Best suited for technical textiles are, for example, the symbol of the straightening machine, the Orthopac RVMC-15 and the reinforced version Orthopac GRVMC-15. Frame, bearings, and rollers are designed for high loads and allow large working widths of up to 5,400 mm. As the latest development from Mahlo, the experts present the Orthopac CRVMC-15 automatic straightener, which is particularly interesting for the glass & carbon fabric industry and some special applications.

The Mahlo team will present the wide portfolio of intelligent scanners and sensors that record product and process parameters, such as distortion, fabric temperature, dwell time, basis weight, coating weight, thickness, moisture content, residual moisture, exhaust moisture, air permeability, etc. online. Among other things, visitors can expect to see the Famacont PMC-15 weft density measurement system in live operation. The system measures the weft or course density on the running web and compares it with the target value stored in the recipe data management system. The detected deviation from the target value is used to fully automatically control the overfeed during the needling process at the stenter frame and to ensure a constant weft/course density over the full width of the product.

High-performance yarns now offer almost unlimited possibilities for replacing traditional raw materials in a vast range of technical applications. Often tailor-made, these filament yarns go way beyond the conventional idea of ‘textiles’ – finding new uses in sectors such as automotive, aviation, maritime, medical and construction, among many others.

Technical textiles are everywhere in our daily lives today, even if we may not always realize it. Some are in more obviously textile products, from sewing threads to artificial turf. But then, take cars as an example: modern vehicles are stuffed with parts made from sophisticated yarns. It’s common for producers of automotive parts now to send template material and requirement lists to Swiss Textile Machinery members, trusting their expertise and experience. Members operate development and testing centers with latest machine installations, where their experts devise customized solutions, as well as calling on the pure innovative spirit which is part of their DNA.

At the extremes
Technology drives applications beyond our current imagining in the case of Heberlein air splicers. Developed for a wide range of uses with high-strength technical fibers, they have no problems splicing aramid fibers up to 16’100 dtex, carbon up to 30’000 dtex, Dyneema up to 5’500 dtex, and glass up to 4’800 tex. Using compressed air, the splicers produce a tear-resistant, homogeneous splice of material without interfering knots.

Retech has the technology to achieve specifications for filament yarns, drawing and stretching fibers to perfection. Top heated godet rolls – many customized – are developed for high-performance fibers. Temperatures up to 400 °C can be achieved. Combining the right settings and wide speed ranges for each specific process results in unique end-products.

Fabric producers of high-end applications must avoid any quality risk. Yarn producers are well aware of this responsibility, so they use precision package winders for technical yarns, developed by Rieter’s subsidiary SSM. Taking yarns from ring twisting bobbins, its specialist finish winders can produce coarse-count technical yarns up to 50’000 dtex, offering a new level of flexibility and winding quality.

Lifestyle essentials
At first glance, motorists might fail to notice many of the technical yarns ‘hidden’ inside their cars. These products have functions such as providing stability with hardly any weight, or absorbing tensile forces at defined elongation. This kind of controlled elongation behaviour, for example, arises from the choice of textile material and the special construction of the yarns used.

Such specifications make twisting and cabling machines essential for the automotive industry. Saurer offers machines for the production of technical yarns made from a variety of feed materials in a very wide yarn count range. They are needed for vehicle products such as tire carcasses, toothed engine belts, seat belts, airbags and lorry tarpaulins.

Technical yarns also play a surprising role in our mobile devices. Tapping, scrolling and swiping are second nature for billions, with our phones and a plethora of other lifestyle essentials. Yet, how many people would know that the touch-sensitivity we take for granted on these screens is largely made possible by twisted glass fibers. Bräcker, part of Rieter’s components business, offers a selection of vertical sinter metal rings and nylon travelers for glass fiber twisting, so that mills can achieve high levels of productivity and quality.

Future unlimited
Automotive and communication technology are already important industries for Swiss Textile Machinery members, along with well-known technical textiles markets in sectors such as medical, transport and construction. Smart-wear is already noted as a field with significant potential. Naturally, members are constantly investigating other possibilities. Swiss textile machinery is already applied in energy (batteries), and plastics.

The Swiss Textile Machinery Pavilion will be at the Techtextil exhibition in Frankfurt, Germany, taking place from 21 to 24 June 2022.

The next edition of Techtextil North America will take place in Atlanta from May 17^nd to 19^th.  At Atlanta ACIMIT, the Association of Italian Textile Machinery Manufacturers, and Italian Trade Agency organize an Italian Pavilion, where 17 Italian machinery manufacturers involved in the production of machines for technical textiles will show their innovative solutions.

ACIMIT members exhibiting in the Italian Pavilion are: 4M Plants, Aeris, Arioli, Computer House, Fadis, Flainox, Guarneri Technology, Ima, Kairos Engineering, Mcs, Ramina, Siltex, Stalam, Testa, Willy.

The US textile industry is one of the top in US manufacturing sector, with a sales volume of exceeding US$ 64 billion in 2020, with approximately 300,000 workers and about 15,000 companies. The industry's strength lies in cotton, man-made fibers, and a wide variety of yarns and fabrics, including those for apparel and industrial uses.

In 2021, the USA represented the third market for Italian textile machinery exports, behind China and Turkey. In 2021 January-September period the value of Italian sales to US market was 93 million Euros, an increase of 74% compared to the same period of the previous year.

SHIMA SEIKI ITALIA S.p.A., Italian subsidiary of leading Japanese computerized knitting solutions provider SHIMA SEIKI MFG., LTD., will exhibit at the 90th edition of the Pitti Immagine Filati exhibition in Florence, Italy. Products exhibited will include the N.SVR®123SP computerized flat knitting machine as well as APEXFiz™ design software.

The N.SVR®123SP computerized knitting machine features a special loop presser bed, capable of producing hybrid inlay fabrics with both knit and weave characteristics. Demand for such novel fabrics are very high across a wide range of applications, from fashion apparel to sportswear, innerwear, outerwear, uniforms and other functional clothing, as well as home furnishing and technical textiles. Shown in 18G at the SHIMA SEIKI booth, N.SVR®123SP will also feature the special i-Plating option, capable of alternating yarn colors in any pattern, producing jacquard-like designs using plain jersey stitch. Plating can be performed within the same course and for individual needles. In combination with the loop presser and spring-type moveable sinker system even greater diversity in knit design is possible. An SVR®123SP machine in 14G with i-Plating option will also be on display at the booth of yarn spinner IAFIL S.p.A. as well.

APEXFiz™ is subscription-based design software that maintains the proven functions that have made SHIMA SEIKI’s SDS®-ONE APEX series design systems so popular with fashion designers. Installed on personal computers, those strengths are now enhanced with the added versatility to adapt to different work styles and business environments including teleworking and telecommuting. APEXFiz™ software supports the creative side of fashion from planning and design to colorway evaluation, realistic fabric simulation and 3D virtual sampling. Virtual samples are a digitized version of sample making that are accurate enough to be used effectively as prototypes, replacing physical sampling and consequently reducing time, cost and material that otherwise go to waste. APEXFiz™ thereby helps to realize sustainability and digitally transform the fashion supply chain.

APEXFiz™ along with SHIMA SEIKI’s yarnbank™ digital yarn web platform are featured at a special section launched at the previous session of Pitti Filati no. 89 called Pitti Studios. Pitti Studios is a content production service that yarn companies exhibiting at Pitti Filati can use for their own promotion. Yarn companies provide a piece of yarn, which is digitized on yarnbank™ and used to simulate photorealistic fabric on APEXFiz™. This is then processed by a creative studio specializing in digital content to provide static and animated 3D virtual representations. The process shows how to use the latest DX tools to provide accurate representation of a finished garment without having to produce any fabric, converting the conventionally wasteful process of sample-making into a sustainable one.

Continuing from past editions of Pitti Filati are knit samples produced in collaboration with Italian designer Vittorio Branchizio.

Knopf’s Sohn, a contract finisher of technical textiles, has installed a fully automated Montex stenter at its plant in Helmbrechts, Germany.
Knopf’s Sohn is processing technical textiles for the automotive, aerospace, home furnishings and workwear markets, based on wool, cellulose, polyamide and polyester fabrics, along with elastane blends, in weights of 80-800gsm.

The Montex machinery range is constantly being upgraded to meet evolving customer needs for greater automation, ease of operation and energy optimisation. The latest ten chamber line at Knopf’s Sohn, with a working width of up to 2.0 metres, was engineered to specific requirements in order to accelerate the company’s move to fully automatic control of its production, and high scaffolding was required for its installation.

The line benefits from two integrated ECO Booster modules to provide high energy savings. These compact, air-to-air heat exchangers, installed within the roof structure of the line, exploit energy from the exhaust gas to preheat up to 60% of the incoming fresh air entering the stenter.

The use of a single ECO Booster unit has been calculated to save up to 35% in energy costs, based on fixation processes. Fully automatic operation, set at the Monforts Qualitex control unit, ensures there is no additional burden on the machine operator.

The line is powered by Exxotherm indirect heating, which practically eliminates the yellowing which can be experienced during the treatment of certain polyamide and elastane-based fabrics, and is also equipped with a Conticlean circulating air filter system for constant high drying capacity.

Software
The latest Qualitex visualisation software offers operators reliability and easy control with its full HD multi-touch monitor and slider function, dashboard function with individual adaptation to operating states and faster access to comprehensive recipe data management.

With the Monformatic control system, the exact maintenance of the dwell time in combined treatment processes (drying and heat-setting) can be monitored. When the heat-setting point is reached, the fan speed is automatically adjusted, keeping energy consumption fully under control.