05. Nov 2025
Huntsman delivers circular PU midsole system to German shoemaker
The PU system, used by Huntsman in collaboration with Steitz Secura, requires no changes to existing processing or chemistry workflows.
Huntsman, in collaboration with Steitz Secura, has developed a polyurethane (PU) solution that can help improve the circularity of safety footwear. Together, the two companies have created a Daltoped PU midsole system that can incorporate recycled content without compromising performance – which the companies say sets a new benchmark in protective footwear production.
Together with safety shoe manufacturer Steitz Secura and an external partner, Huntsman has pioneered a way to introduce recycled PU into new shoe components using a Daltoped PU system, which requires no changes to existing processing or chemistry workflows.
Huntsman’s approach introduces recycled PU into new shoe components, while maintaining performance reportedly on a par with virgin materials.
Wolfgang Burkhard, head of PUR at Steitz Secura, said: “By taking our own PU scrap and reusing it, we have been able to manufacture new midsoles containing 20% recycled content. Together with Huntsman and a technology partner, we have been working to push up this percentage and can now increase the recycled content of new midsoles up to 30%. It’s a tangible example of our commitment to innovation and sustainability, and to finding smarter, cleaner ways to make high-performance footwear.”
Alex Stepuk, business development circularity manager at Huntsman, said: “This project is a strong example of how agility, innovation, and partnership can drive more meaningful progress in sustainable manufacturing. From early development through to rollout, the collaboration with Steitz Secura was built on shared values, open communication, and a clear commitment to finding practical solutions that reduce environmental impact without adding complexity.
“By working closely together, we’ve developed a scalable way to recover and repurpose valuable polyurethane material – helping to meet growing demand for circular, high-performance safety footwear with zero compromise on quality. It’s a great demonstration of what’s possible when like-minded partners come together with a clear vision and the determination to close the loop on waste.”
Huntsman’s solution has undergone development, validation, and industrial-scale trials with Steitz Secura, ensuring that safety, durability, comfort and performance are never compromised.
Photo: A shoe from Steitz Secura’s sustainable “Green Label” series [Steitz Secura]