From the Sector

Lightweight design is a key enabler for addressing the energy transition and sustainable economy. Following the liquidation of the state agency Leichtbau BW GmbH, a consortium consisting of the Allianz Faserbasierter Werkstoffe Baden-Württtemberg (AFBW), the Leichtbauzentrum Baden-Württemberg (LBZ e.V. -BW) and Composites United Baden-Württemberg (CU BW) now represents the interests of the lightweight construction community in the State.

The Lightweight Design Agency for Baden-Württemberg is set up for this purpose on behalf of and with the support of the State. The Lightweight Construction Alliance BW is the central point of contact for all players in the field of lightweight construction in the State and acts in their interests at national and international level. Professor Markus Milwich from the German Institutes of Textile and Fiber Research Denkendorf (DITF) represents the agency.

The use of lightweight materials in combination with new production technologies will significantly reduce energy consumption in transportation, the manufacturing industry and the construction sector. Resources can be saved through the use of new materials. As a cross-functional technology, lightweight construction covers entire value chain from production and use to recycling and reuse.

The aim of the state government is to establish Baden-Württemberg as a leading provider of innovative lightweight construction technologies in order to strengthen the local economy and secure high-quality jobs.

Among others, the "Lightweight Construction Alliance Baden-Württemberg" will continue the nationally renowned "Lightweight Construction Day", which acts as an important source of inspiration for a wide range of lightweight construction topics among business and scientific community.

Professor Milwich, an expert with many years of experience and an excellent network beyond the State's borders, has been recruited for this task. In his role, Milwich also represents the state of Baden-Württemberg on the Strategy Advisory Board of the Lightweight Construction Initiative of the Federal Ministry for Economic Affairs and Climate Action, which supports the cross functional-technology and efficient transfer of knowledge between the various nationwide players in lightweight construction and serves as a central point of contact for entrepreneurs nationwide for all relevant questions.

From 2005 to 2020, Professor Milwich headed the Composite Technology research at the DITF, which was integrated into the Competence Center Polymers and Fiber Composites in 2020. He is also an honorary professor at Reutlingen University, where he teaches hybrid materials and composites. "Lightweight design is an essential aspect for sustainability, environmental and resource conservation. I always showcase this in research and teaching and now also as a representative of the lightweight construction community in Baden-Württemberg," emphasizes Professor Milwich.

Wirtschaftsministerin Dr. Nicole Hoffmeister-Kraut tauschte sich nach dem Präsidentenwechsel mit Südwesttextil zu aktuellen politischen Themen der Branche aus.

Am Dienstag trafen sich der neue Südwesttextil-Präsident Arved H. Westerkamp, Ehrenpräsident Bodo Th. Bölzle und Hauptgeschäftsführerin Edina Brenner mit Dr. Nicole Hoffmeister-Kraut, Ministerin für Wirtschaft, Arbeit und Tourismus des Landes Baden-Württemberg. Neben dem Kennenlernen des neuen Präsidenten standen vor allem die Themen im Fokus, die die baden-württembergische Textil- und Bekleidungsindustrie aktuell beschäftigen.

Dazu zählt das Lieferkettensorgfaltspflichtengesetz, dessen Anwendungsbereich schon heute Mitgliedsunternehmen direkt oder auch mittelbar als Zulieferer betrifft. Die Textil- und Bekleidungsindustrie in Baden-Württemberg bekennt sich zu den Leitlinien des Lieferkettensorgfaltspflichtengesetzes; die unternehmerische Sorgfaltspflicht darf sich aber nur auf diejenigen Bereiche erstrecken, die auch tatsächlich kontrolliert werden können; Praktikabilität inkludiert. Besonders mit Blick auf die angedachten Verschärfungen der europäischen Corporate Sustainability Due Diligence Directive betont der Verband den Bedarf, Sanktionen auf vorsätzliche oder grob fahrlässige Verstöße zu begrenzen und bürokratische Belastungen sehr deutlich zu reduzieren.

Die Betroffenheit vieler technischer Textilien durch die europäische Chemikalienverordnung REACH stand ebenfalls auf der Agenda. Durch die PFAS-Regulierungen sind beispielsweise Rettungs- oder schusssichere Westen, Spezialtextilien für Brennstoffzellen, Wundpflaster oder Heißgasabluftfilter betroffen. Der Verband ruft einerseits dazu auf, textile Entwicklungen der Branche voranzutreiben, setzt sich aber auch für ein differenzierteres politisches Vorgehen ein. Sukzessive Grenzwertabsenkungen statt Totalverbote, Ausnahmen für existenzielle Textilien bei verstärkter Wahrnehmung der Innovationen der Branche im Bereich Recycling und Kreislaufwirtschaft.

Abgerundet wurde das Gespräch durch das vielfältige Engagement des Verbands für den Nachwuchs- und Fachkräftemangel der Industrie.  Dokumentiert durch den Neubau des Texoversums auf dem Campus der Hochschule Reutlingen und den neuen Aktivitäten der TEXOVERSUM Experts & Training Hub gGmbH für die textile Aus- und Weiterbildung. Politisch sieht Südwesttextil das weiterentwickelte Fachkräfteeinwanderungsgesetz als Chance, den bestehenden, großen Bedarf an Fachkräften abzumildern, allerdings müssen dabei auch die Prozesse der Verwaltung beschleunigt und digitalisiert werden.

Arved H. Westerkamp zog ein positives Resümee des Termins:
„Wir setzen uns für die Zukunft der Textil- und Bekleidungsindustrie hier in Baden-Württemberg ein und stellen uns aktiv den Herausforderungen im Bereich der sozialen Standards, Umwelt und Klima etc. Dabei setzen wir auf die konstruktive und vertrauensvolle Zusammenarbeit mit dem Ministerium für Wirtschaft, Arbeit und Tourismus. Wir freuen uns, dass die politischen Themen der Branche Gehör finden!“

In der Textilverarbeitung ist Infrarot-Strahlung eine bewährte Wärmequelle. Sie überträgt kontaktlos hohe Leistungen in kurzer Zeit. Dadurch kann Energie eingespart und die Produktionsgeschwindigkeit erhöht werden. Letztlich werden die Produktionskosten minimiert. Infrarotsysteme sind sehr kompakt und können eine hohe Leistungsdichte auf einer kleinen Fläche erzeugen. Daraus resultieren kleine Anlagenlayouts und ein geringer Platzbedarf in der Produktion.

• Infrarot-Strahler übertragen Wärme kontaktfrei
• Kurze Reaktionszeiten erlauben eine exakte Temperaturführung
• Optimal abgestimmte Infrarot-Strahlersysteme erhöhen die Prozessgeschwindigkeit, verbessern die Qualität und sparen Energie

Fixierung von Teppich Bahnen bestehend aus Textilgewebe und Bitumen Laminierung
Durch die Verwendung von Infrarot wird stets eine konstante Bitumentemperatur beim Laminieren mit dem Textilsubstrat gewährleistet unabhängig von der Produktionsgeschwindigkeit (sogar nach Maschinenstillstand) und unabhängig von der Umgebungstemperatur. Dadurch wurde das Problem der Delamination gelöst.

Trocknung von Baumwollgewebe auf 2% Restfeuchte
Das System erzeugt eine konstante Restfeuchte bei variierender Produktionsgeschwindigkeit von 10-100m/min und über die vollständige Gewebebreite.
Der Trockenofen ist vertikal aufgebaut, wodurch sehr wenig Platz von nur 1m für 200kW benötigt wurde.

Vorwärmung von Nadelfilz Matten
Das Gewebe wird über die gesamte Produktionsbreite von 5000mm am Eingang des Umluftofens mit einer erhöhten Temperatur (± 60°C zusätzlich) angeliefert, und zwar unabhängig von der Produktionsgeschwindigkeit. Die Prozess Geschwindigkeit konnte auf 12m/min. erhöht werden.
Nahtlose Integration in den zur Verfügung stehenden Platz auf der Produktionsmaschine. Es waren lediglich 500mm in Durchlaufrichtung erforderlich.

Following the successful commissioning of two new Monforts Montex wide-width stenter lines and additional environmental management equipment at its plant in Germany, GtA – Society for Textile Equipment GmbH – is aiming to be the first textile finishing company to become entirely CO2-neutral in the manufacture of all of its products by 2025.

GtA is a partner company to Germany’s large-format digital printing fabric leader, Georg and Otto Friedrich GmbH, which has has this year been able to considerably expand its portfolio due to the new Monforts lines.

Headquartered in Gross-Zimmern, close to Frankfurt, Georg and Otto Friedrich GmbH and its partners in Germany have an annual production of 37 million square metres of warp knits for a range of end-use applications, including garments, automotive interiors and technical textiles, but increasingly with a concentration on digital printing substrates.

Fault-free textiles

A new standard in pure white, 100% clean and fault-free textile substrates has been demanded by this market in recent years due to the rapid growth in digitally-printed banners and billboards – often referred to as ‘soft signage’.

The substrates of choice for digital printing are 100% polyester warp knits which are resilient and allow excellent take-up of inks, and vibrant colours and clear and precise images to be achieved with digital printing techniques. The knitted construction also has the advantage of elasticity, which is a plus in terms of flexibility for installers.

Critically, the warp knitted fabrics have extremely smooth surfaces which is becoming increasingly important due to the general move away from PVC coatings which were the standard in the past.

It was to finish these fabrics for Georg and Otto Friedrich GmbH as well as providing such services for many other customers, that the GtA plant in Neresheim, Baden-Württemberg, was established in 2015.

The purpose-built plant on a greenfield site was initially equipped with a fully-automated, 72 metre long Monforts installation comprising a washing machine integrated with a 3.6 metre wide, seven-chamber Montex stenter. The line quickly went from single to double shift production and then to 24/7 operation  to meet demand.

Expanded widths

Building on the success of this installation, GtA has now installed two more Montex stenter lines – both in expanded working widths of 5.6 metres and purpose-built at Montex GmbH in Austria.

A six-chamber Montex unit is combined with a washing machine to guarantee the purity of the substrates, while a five-chamber line is integrated with a wide-width coating machine. This new coating capability at GtA has led to a number of new additions to the Georg and Otto Friedrich DecoTex range for digital printing, including wide width fabrics with flame retardant, antimicrobial and non-slip finishes.

The new Montex stenter lines benefit from all of the latest innovations from Monforts, including the Smart Sensor system for the optimised maintenance planning of key mechanical wear components on the stenters. A comprehensive overview of the condition of all parts at any time is now available for operators within the highly intuitive Qualitex visualization software.

With Qualitex, all article-specific settings can be stored and the formulations for thousands of treatment processes called up again at any time. Individual operators can also personalise their dashboards with the most important machine functions and process parameters.

Environmental commitment

GtA is run by a seasoned team of textile professionals led by Managing Director Andreas Niess.

“We have received excellent service from Monforts from the outset and we were happy to place the order for these two new lines as part of our ongoing cooperation,” he says. “With all of the latest Monforts advances in technology we are fully in control of all production and quality parameters with these lines, as part of our significant commitment to innovative environmental technology.”

The GtA plant, which operates in near-cleanroom conditions, has also been equipped with proprietary technology to fully exploit the Monforts air-to-air heat recovery systems that are now standard with Montex stenters.

“Around 30 per cent of our investment volume at the site goes to energy-saving measures and we are sure that this commitment is worthwhile,” Mr Niess says. “As an example, our integrated heat recovery system fully exploits the waste heat from the process exhaust air and the burner exhaust gases of the Monforts stenters, allowing us to achieve an exhaust air temperature of  between 30 to 34°C, compared to what would conventionally be between 140 to 160°C. Another focus has been on exhaust air purification technology and here too, the latest technology has been installed with integrated heat recovery elements.”

This, he adds, saves 52% of the energy that would normally be used – equating to 5,800,000 KwH per year. The necessary audits for energy-efficient companies are also carried out annually.

In addition, GtA has purpose-designed the automatic chemical mixing and dosing systems that feed the padders for the key treatments that are carried out on the fabrics through the stenters.

The company is going further, however, in its pursuit of clean production and raw materials.

"We want to be an asset and not a burden on our immediate environment and therefore do not use any additives containing solvents," Mr Niess says. “We were the first to use fully halogen-free flame retardant chemistry, and we use bio-based, finely ground alumina products for the washing process instead of surfactants. PES polyester yarns made from recycled material are also increasingly used and the latest additions to our raw materials portfolio, the RC-Ocean products, are made from recycled sea plastic.

“We are now planning a combined heat and power plant for the production of electrical energy and heat and we will also build a photovoltaic system that converts solar radiation into electrical energy. GtA wants to be the first textile finishing company to be CO2-neutral in the manufacture of all of its products by 2025. The complete heat supply and heating for the 13,000 square metre production hall, as well as the office building and the hot water supply for the domestic water, is already energy-neutral. We are convinced that this commitment will pay off in the long term and our positive business development proves that sustainability and business profitability are perfectly compatible.”

In addition to the products for Georg and Otto Friedrich GmbH, GtA  offers its manufacturing capacities for other customers as a contract service.

All products are manufactured in accordance with Öko-Tex Standard 100, product class 1 and the company is also involved in the research and development of new sustainable manufacturing processes, in cooperation with many regional universities and funding project partners.