From the Sector

Eltex of Sweden, a pioneer in the adoption of electronic sensors by the weaving machinery industry, is marking its 60th anniversary this month.

The electronic detection of broken or missing weft yarns during production was the problem Eltex founders Åke Rydborn and Ragnar Henriksson set out to solve with the development of the world’s first electronic weft-stop-motion. Its potential was recognised on its introduction at the 1963 ITMA exhibition in Hannover, Germany, leading to the foundation of the company in a modest 12-square-metre workshop in Älmhult, Sweden, in February 1964.

By 1968 the company was operating from a modern 3,000-square-metre plant and beginning to establish a global presence, introducing the first all-in-one printed circuit board (PCB) for its sensor systems in 1971. As exports increased, further Eltex operations were established in the USA and Ireland and the company expanded its product range including energy control devices, temperature and humidity loggers, food handling safety systems, and military grade battery chargers. Further textile milestones in parallel to advances in weaving technology included optical arrival detectors for air-jet weaving machines at the beginning of the 1980s, and the QTV system for warp preparation, which introduced digital stop-motion control to the industry at the start of the 1990s. In 2009, the company branched out into carpet tufting, first with the CoTS clamp-on tube sensor for tufting machines, followed by the Compact sensor for tufting machines in 2013. In 2019 the Compact II further cemented the company’s position in this sector.

Newly developed Eltex EyETM and ACT-R
Most recently, Eltex has launched the Eltex EyETM system for the monitoring of yarn tension on warp beams. Not only does it eliminate problems when warping, but also in the subsequent weaving or tufting processes. Eltex EyETM monitors the yarn tension on all positions in real-time and a minimum and maximum allowable tension value can be set. If any yarn’s tension falls outside these values the operator can be warned or the machine stopped.

The Eltex ACT and ACT-R units meanwhile go beyond yarn tension monitoring to actually control yarn tension. This extends the application range greatly. The plug and play system automatically compensates for any differences in yarn tension that arise, for example from irregularities in yarn packages.

Eltex has been owned by Brian Hicks, Seamus O’Dwyer and Jonathan Bell since 2007, following a management buy-out and the subsequent formation of Eltex Global Holdings in Ireland. Today, its head office, Eltex of Sweden AB, is in Osby, Sweden where it provides research and development, administration and global sales for the group. Eltex Manufacturing in Ireland is now the group’s primary production facility and Eltex US, Inc. provides sales and service for North America.

At ITMA 2023 in Milan from June 8-14, BTMA member VeriVide will introduce UltraView – its first all-LED light booth for achieving a new level of consistent and standardised colour assessment.

The company’s light booths and lighting cabinets are specified by major global retailers around the world, who rely on them for establishing and maintaining visual quality standards across their supply chains.

This is no easy feat, given the textile industry’s complex structure and the many process stages each individual garment undertakes from the designer’s desk to the finished garment on the retail shelf – often criss-crossing several continents during the journey.

Benefits
UltraView brings a range of sustainable new benefits to designers, mills and brands, and combined with VeriVide’s successful DigiEye system for non-contact colour measurement and digital imaging, can have a positive impact on a company’s bottom line, bringing savings in time, money and CO₂ emissions.

The new all-LED light booth meets all relevant international lighting and colour assessment standards. The UltraView incorporates the company’s A rated CIE D65 and CIE D50 artificial daylight light sources and includes multiple pre-set point of sale light sources while being fully tuneable for recalibration to the individual requirements of each customer. In the past, individual light booths have had to be dedicated to the stipulated settings of each specific customer’s switch sets. The rapid flexibility of UltraView, however, makes the need for multiple light booths a thing of the past.

It also eliminates the need for the regular bulb changes that were necessary with fluorescents, to provide significant energy savings.

As supply chains continue to move towards digitisation away from time-consuming and expensive physical sampling, a version of the UltraView, VisionView, is available with an internal monitor to enable physical samples to be compared with their digital versions, if required.

DigiEye
For non-contact colour measurement and digital imaging, VeriVide’s DigiEye collects and processes data that can be communicated and shared instantly, enabling manufacturers, producers and processors to speed up quality control, sustain product integrity and reduce waste.

DigiEye also overcomes the limitations of spectrophotometers, which are limited to products with a solid colour appearance and can only measure ‘average’ colour, assessing the limited area of the product exposed in the instrument’s aperture.

These limitations are further compounded if the product has any form of multi-coloured characteristics or appearance, an uneven or inconsistent surface, a colour area too small to be captured by the instrument or any sort of surface effect, such as carpet pile and the sheen of satin and silk.

As part of an ongoing investment programme ensuring it remains at the forefront of advanced technology for carpet production, West Yorkshire, UK-headquartered Phoenox Textiles has recently installed a new two-metre-wide shearing line supplied by BTMA member Sellers Textiles Engineers.

Phoenox, which has been family owned since its foundation in 1954, develops original creative flooring design concepts for retail brands. Its products are sold through high street outlets, department stores and volume retailers across Europe and North America, in addition to substantial online and catalogue-driven business. All told, the company’s 24-hour parcel service dispatches some 3.2 million orders every year.

Operating from two manufacturing sites, Phoenox manufactures an annual 1.7 million metres of flooring in the UK. Over a combined area of 1,700,000 square metres, the two plants are equipped for tufting, backcoating, cloth printing and finishing along with automated cutting, sewing and packing.

In addition to the Sellers shearing line, other recent investments for the UK operations have included three new advanced tufting machines and a high-speed Sellers backcoating line equipped to handle widths of up to two metres and coat at six metres per minute. Washable and dyeable foams and eco-friendly applications in different weights are applied for many product areas.

The company’s state-of-the-art Chromo jet printing process line is meanwhile the only one of its kind in the UK, with its 256 jets making possible designs in up eight colours per pattern. With sustainability very much at the forefront of the company’s approach, Phoenox recycles most of its paste and inks and uses organic options wherever possible, as well as recycled water.

“We operate a piece dye colour cloth programme and can dye nylon and cotton with weights of up to 500kg per load, working with direct, organic, vat and reactive dyes,” says Mosley. “We also offer computerised and weighed commission dyeing. Computerised automated cutting machines and photocell pattern recognition enable us to cut at high speed in most cloth densities. With finishing and sewing though, it’s all about the detail, and our team have years of experience and hand-finish our products on traditional high-speed machines.”

The new Sellers Hybrid Shearing Cylinder can provide a competitive edge for manufacturers which is currently being proven in the field, including at Phoenox. It’s one of a number of new innovations BTMA members are planning to showcase at next year’s ITMA exhibition in Milan.

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.”

BB Engineering GmbH (Germany) delivers a melt filter for recycling PET flakes to polyester manufacturer Indorama Polyester Industries (Thailand). Indorama will be using the type NSF38 filter in its recently assembled recycling system in order to produce rPET granulate from flake PET bottle waste. The NSF38 filter enables continual filtering – in other words, the system switches from one filter to the other during the process without the need for conversion shut-downs. The filter allows the processing of consumer waste for example, in the form of shredded PET bottles into new, high-quality rPET granulate. This granulate is subsequently processed into manmade fibers in spinning systems.

The NSF38 is a switchable filter with a filter surface area of ap-prox. 16 m2 on each side, with throughputs of between 1,000 and 1,900 kg/h. The filter inserts each contain 19 pleated filter candles (60 x 1,000mm Ø). The filter medium comprises a sin-tered metal fiber nonwoven with a filtration fineness of 25 μm. This ensures that the melt remains free of contaminants and gel particles, which in turn enables the production of high-quality end products.