Carbon Stewardship: Harnessing Biomass, Recycling & Capture for a Sustainable Future

Industrial Melt Spinning of Sustainable Elastic Yarns Made from Partially Bio-Based Thermoplastic Polyurethanes

Saal A
Freitag, 12.09.2025, 10:00 - 10:20 Uhr

Elastane is essential for the comfort and functionality of many textiles but is no longer produced in the European Union due to high costs and the use of toxic solvents. As a result, there is the need for imports with dependencies on non-EU countries that might be overcome by switching to the cost-efficient, solvent-free and sustainable melt spinning of at least partially bio-based thermoplastic polyurethanes. In this presentation, the upscale to production scale within an industrial environment is presented.

Sprecher
Matthias Winkler (Schill + Seilacher GmbH), Jan Thiel (ITA Institut für Textiltechnik der RWTH Aachen University)
Co-Authoren
Michael Kraus (Schill + Seilacher GmbH), Jörg Hehl (Schill + Seilacher GmbH), Lukasz Debicki (ITA Institut für Textiltechnik der RWTH Aachen University), Thomas Gries (ITA Institut für Textiltechnik der RWTH Aachen University)
Elastane is essential for the comfort and functionality of many textiles, for example in medical products such as compression stockings or masks. The annual elastane production worldwide amounted to 1.23 million tons in 2023 with a growth of approx. 6.4 % per year and is mainly covered by dry spinning processes. In the European Union, all elastane spinning plants have been closed due to high production costs and the essential use of toxic solvents such as dimethylacetamide (DMAc). As a result, there is the need for imports with dependencies on non-EU countries. Additionally, most of the commercially available elastanes are made from fossil-based resources. The cost-efficient, solvent-free and sustainable melt spinning of elastic filament yarns made from at least partially bio-based thermoplastic polyurethanes is one approach to overcome these challenges and enable the production of elastic yarns in the European Union. In this presentation, the upscale to production scale within an industrial environment is presented.