A multilayered, breathable, waterproof fabric and a process for manufacturing this fabric have been disclosed. The invention consists of a fabric substrate first coated with an adhesive foam formed from a fully reacted polymer such as polyvinyl chloride, polyurethane, acrylic, polystyrene or mixtures...http://www.google.es/patents/US4863788?utm_source=gb-gplus-sharePatente US4863788 - Waterproof breathable microporous membrane with cellular foam adhesive
Waterproof breathable microporous membrane with cellular foam adhesive
