From the Sector

BÖNNIGHEIM - Textile testing and research partner Hohenstein has reason to celebrate: this year marks the company’s 75th anniversary. Now in its third generation of family ownership, the company will spend this landmark year expanding its foundation for the future. Owner Prof. Dr. Stefan Mecheels is proud: "Our motto, We live textiles, expresses exactly what has made us special for many decades - our collective enthusiasm for textiles and the opportunity to provide solutions that make a difference in the world.”

Successful Roots

Prof. Dr.-Ing. Otto Mecheels laid the foundation for an internationally-renowned company in 1946 when he founded the Hohenstein Institutes, a textile school in Hohenstein Castle. His son, Prof. Dr. rer. nat. Jürgen Mecheels modernized the Hohenstein Group’s business structures and expanded into new research and service areas such as textile finishing or professional laundries/dry cleaning. He helped to forever change textile safety with the STANDARD 100 by OEKO-TEX® certification system that protects consumers from harmful substances. Under Prof. Dr. Stefan Mecheels’ leadership since 1995, Hohenstein has been at the forefront of microfiber analysis, consistently perfected its created standards for comfort and compression testing and worked to reduce the industry’s ecological impact. Last but not least, the testing laboratory in Hong Kong, which has been in operation since 2011, and the Hohenstein textile testing laboratories in Bangladesh and India, which were opened in 2018, ensure even greater market proximity.

Solutions for the Global Textile Industry

Today, Hohenstein specializes in the testing, certification and research of all kinds of textile-related products. With a total of more than 1,000 employees at its headquarters in Bönnigheim and in more than 40 branches, contact offices and laboratories worldwide, the company faces the current challenges of the global industry.

"Textile sustainability remains a major focus for us and is woven through every decision we make," explains Stefan Mecheels. “Even services that are seemingly focused on innovation contribute somehow to longer lasting products, less waste and more safety. Our Digital Fitting Lab helps brands leap forward with digitized apparel development. Using modern 3D and 4D technologies and our traditional fit and pattern expertise, we help our clients design better fitting clothes with fewer prototypes and less waste.”

When SARS-CoV-2 struck, the company developed a quality label to easily identify non-medical, community masks that meet legal and functional requirements. The Hohenstein Quality Labels are independent proof with a high level of credibility among buyers and consumers.

Anniversary

Among the celebrations, Hohenstein plans to hold a mid-year press conference with regional and industry journalists. "We are celebrating this anniversary because we have succeeded in constantly adapting to the market and use our applied research to anticipate developments. For this I would first like to thank our employees, who, in keeping with the motto We live textiles, put their hearts and souls into their work. A very special thanks also goes to our customers, some of whom have been placing their trust in us for decades," says Stefan Mecheels, adding "I am convinced that we are positioned to continue our contribution in the future.

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.