DMFA problem for synthetic shoe uppers, Stahl says

11/12/2014
Leather chemicals company Stahl has said a high volume of synthetic material being produced for footwear uppers contains the solvent dimethylformamide (DMFA), a substance that some agencies have linked to human health problems.

Speaking at the Future Footwear Materials conference in Eindhoven, the Netherlands, on December 11, Alexander Schieke, Stahl’s global marketing manager for performance coatings, said he and his team have calculated that the volume of synthetic materials being produced for shoe uppers at the moment containing DMFA is at the level of around 4 billion square-metres per year globally.

“Our focus here is on materials such as PVC and TPU,” he said. “The DMFA is in the coating that goes onto them.”

His presentation also made it clear that Stahl offers DMFA-free solutions for PU-coated fabrics too and that manufacturers also produce billions of square-metres a year of this type of synthetic material.