An absorbent article includes an air-laid fibrous web having a medial portion of a greater basis weight than flanking end and side portions. The fibers forming one surface of the web are adhesively bonded together to provide an abrasion resistant, nonpilling, facing layer, and also to aid in maintaining...http://www.google.es/patents/US4016628?utm_source=gb-gplus-sharePatente US4016628 - Method and apparatus for forming absorbent articles
Method and apparatus for forming absorbent articles