A gypsum board includes a set gypsum core and front and rear paper facers adhered thereto. At least the front paper facer has substantially isotropic tensile strength, thereby providing the gypsum board with enhanced nail pull resistance. A process for manufacturing such gypsum board is further provided....http://www.google.es/patents/US20070122604?utm_source=gb-gplus-sharePatente US20070122604 - Gypsum board and process of manufacture
