A disposable absorbent pad such as a diaper, sanitary napkin, underpad, surgical dressing or wipe, and the like, is made from a flexible, body fluid-impermeable backing sheet, a layer of absorbent material on the backing sheet, and a soft, body fluid-permeable facing sheet which overlies the absorbent...http://www.google.de/patents/US3967623?utm_source=gb-gplus-sharePatent US3967623 - Disposable absorbent pad
