From the Sector

UK’s Optima 3D is delivering its weaving technology to the USA, for installation at the University of Maine’s Advanced Structures and Composites Center (ASCC).

The 3D weaving system consists of an Optima 3D Series 600 shuttle weaving machine with an integrated 2,688-hook Stäubli SX jacquard and harness. It is also complemented by Optima’s compact warp delivery creel and an associated pirn winder for shuttle bobbins and a spool winder for creel spools.

Optima’s looms offer many advanced features over conventional weaving machines, particularly in terms of versatility, as a result of the comprehensive use of digital control systems allowing rapid parameter and sequence changes, coupled with an innovative shuttle system.

The ASCC is certainly no stranger to advanced technology, or indeed ambitious composite projects – in 2019 it received no less than three Guinness World Records, for the world’s largest prototype polymer 3D printer, the largest solid 3D-printed object, and the largest 3D-printed boat. In its latest project it has further introduced BioHome3D – the first 3D-printed house made entirely with bio-based materials developed in a partnership with Oak Ridge National Laboratory. The 182-square-metre prototype features 3D-printed floors, walls and roof which are fully recyclable and highly insulated with 100% wood insulation and customisable R-values. Construction waste was nearly eliminated due to the precision of the printing process.

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 first Carded/Pulp line at Ecowipes is a constant success due to surging end product demand from international markets. To spur the company’s growth Trützschler Nonwovens and Voith will supply the second CP Line to the Polish producer.

The carded/pulp technology by Trützschler and Voith delivers both performance and top-quality products. Voith’s BlueLine stock preparation equipment and cylinder mould FloatLip former processes paper-grade pulp, the cost-effective raw material for the paper industry. It delivers an extremely homogeneous wet-laid web. The NCT high-speed card, supplied by Trützschler Nonwovens, lays a light-weight layer of viscose or lyocell fibers on top of it. This configuration allows for a precise layering and an efficient dewatering. Trützschler’s AquaJet entangles both layers into an inseparable composite nonwoven with superior functionality. A multi-drum dryer and a powerful winder complete the production line which allows for productions speeds up to 300 m/min.

Ecowipes recipe for success is a market high pulp content in the wipe material thus bringing down production costs significantly. For optimising its production processes, Ecowipes relies on digital solutions delivered especially for the old and the new Trützschler/Voith line.

The new, industrial, entry-level EFI™ Reggiani BLAZE scanning printer from Electronics For Imaging, Inc. is making its debut at the ITMA Asia tradeshow, 12-16 June in Shanghai, China. The high-quality printer is an easy-to-use, smart solution to help textile companies blaze their successful trail into the world of efficient, sustainable industrial inkjet printing. It is equipped with EFI Reggiani’s state-of-the-art technology, offering high quality, reliability and flexibility on the widest variety of designs.

Cutting-edge technology in a compact footprint
The EFI Reggiani BLAZE printer is designed to give textile companies the opportunity to enter the digital textile printing market with a compact solution. The new, 1.8-metre wide printer offers an innovative, low-maintenance, continuous recirculation ink system equipped with a level sensor and degassing as well as a printhead crash protective system for longer printhead life and superior uptime.
 
Thanks to its cutting-edge printhead reliability and low maintenance costs for a competitive TCO (total cost of ownership), the BLAZE printer can produce up to 125 linear metres per hour with a printing resolution up to 600x1200 dots per inch (dpi). The printer – which delivers excellent productivity as one of the fastest digital inkjet solutions in its class – has eight 300-dpi dual channel printheads and can print in up to eight colours with full variable drop size.

Flexible fabric feed and handling for higher productivity
The EFI Reggiani BLAZE is equipped with a continuous and switchable belt washing unit to remove water and fabric hairs. An embedded device for adhesive application offers the possibility to use thermoplastic, resin and permanent adhesives.
 
The printer also includes other features for enhanced productivity and value, including a 400-mm roll unwinder, expandable shafts, an air gun and a pneumatic bar for standard fabrics.

Efficient software and electronics technology
The Reggiani BLAZE printer offers a friendly and intuitive user interface with real-time image processing and flexible queue management. The software also runs a WYSIWYG (What You See Is What You Get) job editor, as well as tools to accurately predict printing speed and ink usage.

EFI Reggiani TERRA Silver enhancement
EFI has also released an enhanced version of the EFI Reggiani TERRA Silver printer, a 1.8-metre wide printer operating with EFI Reggiani’s unique TERRA pigment ink with binder solution for high-quality, highly sustainable, direct-to-textile printing without steaming or washing.

Features:

• A new recirculating ink system for superior reliability and minimum maintenance at start up and during production
• Several printing modes to ensure maximum flexibility in terms of design capability
• New, real-time image processing that eliminates time spent in image pre-calculations
• A user friendly, intuitive interface
• A more-efficient polymerisation process that takes place as printed textile goes through the printer’s on-board dryer.