The present invention relates to drywall corner beads, particularly drywall corner beads having an outer paper layer, and paper therefor. The improved paperbead includes an elongated core having an outer surface. A paper strip is bonded to the outer surface of the core. The paper is impregnated on one...http://www.google.es/patents/US7214434?utm_source=gb-gplus-sharePatente US7214434 - Paper and paperbead for protecting drywall corners
Paper and paperbead for protecting drywall corners
