A process for differentially drawing films and non-woven fiberous webs for increased drapability and strength of webs including at least in part cold drawable polymeric materials or blends thereof including incompatible polymer blends and polymeric matrixes having inorganic fillers draws portions of...http://www.google.es/patents/US4153664?utm_source=gb-gplus-sharePatente US4153664 - Process for pattern drawing of webs
