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16.03.2022

TMAS: TEXO AB sees Demand for Compfelt Weaving Looms

TEXO AB, a member of TMAS, the Swedish textile machinery association, is currently seeing a surge in demand for its Compfelt weaving looms for press felt base fabrics.

“These are far from standard machines,” explains TEXO President Anders Svensson. “Off-the-shelf industrial weaving machines generally range in their working widths from 1.9 to 3.2 metres, with those purpose-built for technical applications such as geotextiles extending to wider widths of six metres and beyond. Meanwhile, one of the machines we have recently successfully delivered and commissioned has a working width of 23 metres and is not even the widest of the many such machines the company has engineered and delivered worldwide since its formation.”

A second recently-delivered line has a more modest working width – in relative terms – of 13 metres.

TEXO AB, a member of TMAS, the Swedish textile machinery association, is currently seeing a surge in demand for its Compfelt weaving looms for press felt base fabrics.

“These are far from standard machines,” explains TEXO President Anders Svensson. “Off-the-shelf industrial weaving machines generally range in their working widths from 1.9 to 3.2 metres, with those purpose-built for technical applications such as geotextiles extending to wider widths of six metres and beyond. Meanwhile, one of the machines we have recently successfully delivered and commissioned has a working width of 23 metres and is not even the widest of the many such machines the company has engineered and delivered worldwide since its formation.”

A second recently-delivered line has a more modest working width – in relative terms – of 13 metres.

Paper machines
The demand for such machines comes from the suppliers of paper machine clothing (PMC) to paper mills, who in turn operate colossal machines for paper manufacturing.
On of the largest paper making machines is currently believed to be located on Hainan Island off the southern coast of China and is 428 metres long – roughly the length of four football pitches. Naturally, such machines require equally large-scale components, which is where TEXO comes in. All paper machines require a regular supply of PMC fabrics which are employed in three separate areas of the paper machine – the forming section, the press section and the drying section.

Press felts
TEXO Compfelt weaving machines are specifically employed for the production of endless (tubular) woven base fabrics for the press section of paper machines, where water is mechanically removed from the newly formed sheet of fibres. In the simplest press, the sheet is carried by the PMC fabric between two rolls, where water is squeezed out by the application of load and pressure. This can also be assisted by the use of vacuum and heat. The PMC fabrics here need to be replaced regularly, with a maximum lifespan of six months.

Press felts have become increasingly sophisticated over the years, consisting of complex woven base structures which are subsequently combined with nonwovens via needlepunching on equally huge machines. The woven base fabrics are primarily made from polyamide for its strength and hygroscopic and elastic properties.

Dobby harness
“A major refinement of the machine has been the ability to equip it with up to 24 dobby harness frames to meet the demand for sophisticated structures from the PMC manufacturers. Although the PMC business represents a small proportion of the total cost of manufacturing paper, it can have a significant impact on the quality of the paper, the efficiency of a machine and machine production rates.”

Another significant development has been that of a self supporting base pre-filled with concrete, which has eliminated the need to dig out foundations in a plant to support the machine.

Retrofits
TEXO’s looms are built to last, but technology moves forward, and the company is also currently active in the retrofitting of existing machines built as far back as the 1970s.

Integration
TEXO has also just integrated its offices and production centre at its base in Älmhult, Sweden, to create a unified 5,000 square metre site.

Source:

TMAS / AWOL Media

Oerlikon presents take up winder Source: www.ita.rwth-aachen.de
Oerlikon presents take up winder
30.05.2017

Oerlikon presents new take-up winder to ITA as partial gift

In May 2017, Jochen Adler, Vice-President and Chief Technology Officer at Oerlikon Textile GmbH & Co. KG, presented a Oerlikon Barmag take-up winder as a partial gift to Prof. Dr Thomas Gries, head of the Institut für Textiltechnik (ITA) at RWTH Aachen University. The new Type ASW602 winder, which is equipped with modern control software and user interface, replaces the former institute’s Barmag take-up winder.

In May 2017, Jochen Adler, Vice-President and Chief Technology Officer at Oerlikon Textile GmbH & Co. KG, presented a Oerlikon Barmag take-up winder as a partial gift to Prof. Dr Thomas Gries, head of the Institut für Textiltechnik (ITA) at RWTH Aachen University. The new Type ASW602 winder, which is equipped with modern control software and user interface, replaces the former institute’s Barmag take-up winder.


Due to this modernisation, ITA has access to a latest generation take-up winder which is used for various research projects. The new winder is applied at ITA’s two pilot melt spinning plants and ensures the transfer of new research and development insights into the pilot scale. Furthermore, this winder has two winding positions and operates with winding speeds between 2500 m/min and 5500 m/min. The new winder is suitable for all kinds of polymers, from polypropylene to polyethylene, polyester, polyamide etc. as well as for the production of several types of yarn, such as industrial yarn, pre-oriented yarn and fully-drawn yarn.
“We thank Oerlikon Barmag for the generous partial gifting and the support during the set-up of the new take-up winder”, says Prof. Dr Thomas Gries. “The new equipment will keep the institute’s machine park on a high and powerful level.” The head of ITA’s chemical fibre department Dr Thorsten Anders adds: “This winder is designed for the needs of chemical yarn research. It allows state of the art technology research and development and pilot-scale production. We will use it for the melt spinning plants in the single- and bi-component spinning process. This way, we can access a wide variety of producible yarn types.“

More information:
Oerlikon, ITA
Source:

Institut für Textiltechnik of RWTH Aachen University