The present invention provides a process for forming a three-dimensional, macroscopically-expanded, fluid pervious web having an improved functional surface comprised of a sheet of polymeric material having a first surface and a second surface. A plurality of discrete deposits of a water resistant...http://www.google.es/patents/US5670110?utm_source=gb-gplus-sharePatente US5670110 - Method for making three-dimensional macroscopically-expanded webs having improved functional surfaces
Method for making three-dimensional macroscopically-expanded webs having ...
