From the Sector

Monforts will highlight its technologies for special technical textile applications at this year’s ITMA ASIA + CITME which takes place at the National Exhibition and Convention Center in Shanghai, China, from November 20-24.

One of Monforts' developments is the Montex 8500 XXL stenter system for the production of technical fabrics in widths of up to 6.8 metres. Among the products made on this system are treated nonwovens for the geotextiles and filter media markets, tarpaulins, advertising banners, black-out curtains, membranes and many more.

On Montex©Coat coating lines, meanwhile, the possibilities range from the single-sided application of finishing agents for outdoor clothing and adding functionality to home textiles, to the creation of materials for sophisticated lightweight construction and automotive and aerospace components.

“Many more applications are possible, such as the overdyeing of denim, the creation of double-face coated materials, fabrics awnings, tents and medical drapes and the pre-treatment of substrates for digital printing”, explains Gunnar Meyer, Monforts area sales manager for China. “A range of different doctor blades and their combinations can be supplied to meet individual requirements, including air knife, roller knife, foam, screen and magnetic roller coating. The latter option is recommended for lines with working widths of over 2.4 metres.”

In addition, Monforts can provide the necessary explosion-proof ranges for solvent-based coatings and high temperature processes up to 320°C, such as the PTFE coating of nonwoven filter material. These lines are equipped with special burners, stenter chains, and insulation.

Patients as well as air-condition and ventilator systems spread SARS-CoV-2 virus as aerosols which settle on surfaces and remain there infective for more than 72 hours. That‘s why the pandemic has triggered an intensive search for Personal Protective Equipment PPE whose surfaces have antiviral properties, e.g. are able to bind and inactivate adhering virus.

In this context the chemical stability of the materials being used for PPE, polypropylene PP and/or polyester PET, is a challenge. More precisely, the absence of so-called ‘functional groups‘, like -OH, -COO-, -NH3+ at the material‘s surface. These groups are the fundamental basis for surface chemistry – specifically for attaching antiviral compounds onto the surfaces of man-made fibers.

Antiviral surface modification with the basic amino acid Arginine Arg is a new approach to inactivate SARS-CoV-2. - bionic surfaces‘ - development was tested according to ISO 18184:2019 „Determination of antiviral activity of textile products“ at Institute for Virology and Immunology at University Wuerzburg, Germany. - The finding: „[Six hours] incubation on [Arginine] coated NW reduced viral infectivity by more than five orders of magnitude.“ In other words: An amount of, for example, 10.000.000 virus is reduced to 100 (by five orders of magnitude).

- bionic surfaces – has more than 30 years experience in wet-chemical surface modification of man-made polymers like PDMS, PP, PE, PTFE.

wear2wear is an innovative industrial partnership dedicated to high-quality and sustainable clothing. Five expert partners in Europe have come together to cover the entire recycling loop. On cutting-edge production systems, textile fibres from used clothing will be turned into functional fabrics. Schoeller Textil AG is supplying a wholistic textile portfolio for the workwear area. At Schoeller Textil, the recyclable, functional fabrics from the wear2wear concept belong to the Inspire fabric group. These are high-quality protective workwear fabrics made of 100 percent polyester, which offer the greatest clothing comfort and often feel just like cotton. They are also compliant with the stringent requirements of the bluesign® system.

The sustainable wear2wear concept is synonymous with high-quality, responsible clothing. In European operations, textile fibres from used garments are used to produce new functional fabrics. Depending upon the area of intended use, they also meet strict waterproofing, breathability, protection and comfort requirements. To ensure that the raw material cycle comes full circle, these textiles can be recycled again when they reach the end of their service life. As a result, there is no waste, and they go on to produce new garments. As the wear-2-wear partner companies guarantee that – from the quality of the raw materials to the guaranteed recycling end process – these are 100 percent recyclable, functional fabrics made of recycled textile fibres. Water- and dirt-repelling technologies based on renewable raw materials, along with the most advanced membrane technology, will ensure that the textiles are manufactured and impregnated entirely without the use of PFC in the future too.

Five partner companies  
The five European partner companies in the wear2wear cooperation cover the entire recycling loop. Heinrich Glaeser Nachfolger GmbH is a German fibre and yarn producer and the “recycler” in the loop. Märkischen Faser GmbH (D) is the “upcycler” and fibre manufacturer. Carl Weiske GmbH & Co. KG (D) develops the polymers, fibres, yarns, chemical additives and textile systems, and TWD Fibres GmbH (D), a fully-integrated filament yarn producer, covers the entire range of polyester and polyamide 6.6 continuous filament yarns. Schoeller Textil AG, the innovative Swiss company, is responsible for textile production and manufactures sustainable high-tech fabrics with maximum clothing comfort. The matching climate-neutral and similarly 100 percent recyclable PTFE and PFC-free membrane, as well as recycled outer materials and linings, are supplied by Sympatex Technologies (D), the ecological alternative among the textile function specialists. DutchSpirit is a Dutch company which has been dedicated to environment-friendly clothing since 2010. Its mission is to significantly increase the awareness for sustainable clothing and offer recyclable clothing in the workwear segment. DutchSpirit is the initiator for the development of the Inspire products from Schoeller Textil and provided the inspiration for the wear2wear concept. Further garment-making partners who now also belong to the cooperative group include: Anchor Workwear BV (NL), Hüsler Berufskleider AG (CH), Groenendijk Bedrijfskleding BV (NL), Bedrijfskledingdiscounter BV (NL) and Rifka'S (NL).