From the Sector

Die Verleihung der Förder- und Kreativitätspreise 2021 der Walter Reiners-Stiftung des VDMA, Fachverband Textilmaschinen an Studierende und Nachwuchswissenschaftler:innen deutscher Universitäten für Spitzenleistungen in Studium und Promotion fand am 09. November 2021 im Rahmen der Aachen-Dresden-Denkendorf International Textile Conference 2021 statt. Die bundesweit ausgeschriebenen Förder- und Kreativitätspreise wurden erneut online durch Herrn Peter D. Dornier, Vorstandsvorsitzender der Walter Reiners-Stiftung, verliehen.

Dr.-Ing. Martin Hengstermann wurde mit dem mit 5.000 EUR dotierten Förderpreis beste Dissertation des Deutschen Textilmaschinenbaues 2021 für seine am Institut für Textilmaschinen und Textile Hochleistungswerkstofftechnik der TU Dresden erarbeiteten Dissertation „Entwicklung von Hybridgarnen aus recycelten Carbonfasern und Polyamid 6-Fasern für thermoplastische Verbundbauteile mit hohem Leistungsvermögen“ geehrt.

Gegenstand der Dissertation ist die Entwicklung und Umsetzung von neuartigen Hybridgarnen aus recycelten Carbonfasern (rCF) und Polyamid (PA) 6-Fasern für thermoplastische Verbundbauteile. Diese Hybridgarne können die hervorragenden mechanischen Eigenschaften der rCF im Gegensatz zu bisherigen Lösungen in hohem Maße ausnutzen. Bedingt durch deren spezielle Fasereigenschaften (insbesondere hohe Querkraftempfindlichkeit, Sprödigkeit und fehlende Kräuselung) wurde dafür die Prozesskette der konventionellen Stapelfasergarnherstellung, bestehend aus Krempel, Strecke und Flyer, umfangreich analysiert und technologisch-konstruktiv weiterentwickelt, wodurch erstmalig eine schonende und gleichmäßige Herstellung der Hybridgarne ermöglicht werden konnte.

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.

The new series of webinars of the Swiss Oerlikon Group’s Manmade Fibers Solutions business unit will be focusing on services for manmade fiber systems.

Short Overview of the webinars:

• How ceramics within the yarn path improve the quality of your yarn on September 01
• myOerlikon – tailored digital services provide a comprehensive overview on September 13
• Always by your side – with Oerlikon Remote Services on September 22
• Better safe than sorry – maximize productivity and minimize downtimes with regular machine check-ups on September 29

For more information click here, where we keep you informed about upcoming events.

Wülfing GmbH is one of the oldest but also one of the most modern home textiles companies in Germany, with its main weaving and finishing operations located in Borken, North Rhine-Westphalia, and a further jacquard weaving mill in Steinfurt, as well as with a making up and packaging plant in the Czech Republic.

At its Borken plant, Wülfing has employed a Monforts sanforizing line since 2009 to guarantee the required dimensional stability and shrink-fastness of its high quality bed linen. With a working width of over three metres, the sanforizing process is a central pillar in the production of typical wide-width cotton fabrics for home textiles.

In 2017, the company was able to acquire a second Monforts sanforizing line from another company which, although built in 2005, had been virtually unused. It was overhauled and installed behind a Monforts equalizing frame of a similar age.

“Unfortunately, the two machines had to be operated separately via individual controls and did not represent an integrated unit,” says Schulte-Mesum. “This resulted in deficits in the desired productivity and in the control technology.”

Wülfing consulted with Monforts on a number of upgrade options and opted for a completely new joint control system to merge the two machines, as well as a new connecting inlet, a tensioning and damping field and a steaming unit.

“Monforts provided a fast and precise erection and commissioning of the technology in spite of the difficult pandemic circumstances,” says Schulte-Mesum. “The result has been an increase in production speeds by 20% and enhanced uniformity in fabric width through a much improved guidance system.

“We are also achieving energy savings as a result of the new control and drive technology and operation has been simplified and improved as a result of the unified control. We benefit from simplified access for maintenance work such as the grinding of the rubber blanket, but most of all we have greatly improved our flexibility and now have two almost identical Monforts sanforizing lines.”