Watertight but water vapor permeable material for sportswear comprises a polyurethane layer between water vapor permeable carrier and cover layers

摘要

The material consists of a water- and airtight but water vapor permeable polyurethane layer on a water vapor permeable carrier layer. The other side is covered with a water vapor permeable cover layer. The polyurethane layer is applied as pre-polymer and is cured with the cover layer without using additional adhesives.