From the Sector

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.”

Fully integrated production lines from single source suppliers have increasingly become the norm in the textile industry and make complete sense in meeting today’s complex supply chain needs, according to TMAS – the Swedish Textile Machinery Association.

“Over the past few decades, textile mills have transitioned from consisting of collections of individual machines serviced and maintained largely by in-house mechanics as well as separate supplier companies for each part of the production line,” says TMAS Secretary General Therese Premler-Andersson. “Those in-house engineering service teams have diminished over the years, while the introduction of electronic drive systems in the 1980s and 90s also put an increased emphasis on the need for third party electrical engineers, operating separately to the machine builders.

“Subsequently, mechanical machines and electronic drive systems became much more integrated, and more recently, with the advent of digitalisation, entire production lines are becoming centrally controlled with remote, instantaneous connections to their suppliers for service and maintenance.

“In this context, the integration of machinery and automation specialists as single-source suppliers makes perfect sense, while partnerships between machine builders and their customers have never been more important.”

The recent acquisition of Nowo textile machinery from its previous owner, Brandstones Ab Oy, by TMAS member ACG Kinna, she adds, is a good example of this general trend.

Nowo, headquartered in Turku, Finland, designs, manufactures and exports high-end textile production machinery mainly for the fibre processing industry. At the end of the 1980s it introduced the highly successful Nowo Vac pillow filling system, which has been its best-selling system, alongside the Noworoll ball fibre machine, introduced in the 1990s.

Nowo’s machine range covers the entire production process from bale opening to weighing and filling, and complete production lines are tailored to the specific needs of customers. The company can also deliver individual machines such as bale openers, cards, cross-lappers, pickers, mixing devices, material silos, sucking devices, anti-static units etc. Seven patents cover the company’s technologies.

Founded in 1977, ACG Kinna Automatic, based in Skene in Sweden, specialises in customised and cost-efficient solutions for the production of pillows and quilts. All of its design, manufacturing and final line testing is carried out in Sweden and the reliability and longevity of its machines has earned it the trust of the world’s largest furniture and home decoration retailers and Europe’s largest manufacturer of pillows and duvets, among many customers.

• A unique partnership enabled Lectra to test its revolutionary laser-cutting technology in a real production environment while delivering sustainable competitive advantage to the world’s leading supplier of airbag cushions.

Reaching the next level of growth and performance
Global Safety Textiles (GST) is the leading independent producer of airbag fabric and airbag cushions and supplier to the majority of airbag manufacturers.
Recognized for its long tradition of research and development, GST uses stateof- the-art technology to manufacture technical textiles for a variety of passive safety applications.
With operations on four continents, the German group has a workforce of more than 5,000.
The company’s worldwide operations and resources enable it to fulfill high volumes of orders promptly, providing the global automotive industry with a steady supply of airbag fabrics and cushions.To address GST’s main business challenges and meet their demanding manufacturing specifications, the group evaluated the performance of FocusQuantum OPW for one-piece-woven (OPW) airbag fabric together with Lectra in the pre-launch phase of the advanced laser airbag cutting solution. Following successful testing of Lectra’s advanced airbag cutting technology in a real production environment in Poland, the group then decided to acquire FocusQuantum OPW for implementation in China.

A one-off join testing collaboration on customer premise
The result of a mutually beneficial collaboration between Lectra and its longstanding customer, specifications for laser OPW airbag cutting solution FocusQuantum took into account GST’s exacting requirements. Once the development of FocusQuantum OPW was completed, both companies agreed to conduct joint
testing. “We came to the idea of joint testing when we visited Lectra’s R&D center in Bordeaux,” says Uwe Zimmermann, COO, GST.
“We discussed taking validation of our specifications to the next level. The idea came up to do it directly in a manufacturing environment.”
The extensive testing enabled GST’s experts to certify FocusQuantum as a proven technological platform for the mass production of airbags. “Process capability was a formal part of validations at GST Poland,” recalls Piotr Siwek. Manufacturing Engineering Manager. “It was verified and confirmed that FocusQuantum meets GST’s targets. The biggest improvement over the previous solution was the software, which we also helped Lectra develop. FocusQuantum Suite is one of the biggest advantages.”

Worldwide standartisation and rollout in China
As a result of the successful joint testing, GST decided to proceed with implementation in China. “Because GST aims to become a major player in Asia,
implementation of FocusQuantum in China is the next logical step for us,” explains Zimmermann. “Standardization of all our equipment worldwide is mandatory for us. That’s why we decided to work with a global player like Lectra.” With more than twice the productivity of the previous solution, FocusQuantum
has exceeded GST’s performance targets. The significantly higher level of process capability has both improved cutting quality and reduced the number
of defective cut parts.
“When we compare the unit output and unit cutting cost, we see a real improvement over the previous generation, so we are quite satisfied with the machine,” notes Sky Yang, General Manager, GST China. “It’s more reliable and productivity is significantly higher.”