A disposable absorbent article, such as a diaper. The disposable absorbent article has a first topsheet with apertures large enough for low-viscosity fecal material to pass through to a secondary topsheet. The secondary topsheet immobilizes the fecal material in position for dewatering, so that the liquid...http://www.google.com.au/patents/US5342338?utm_source=gb-gplus-sharePatent US5342338 - Disposable absorbent article for low-viscosity fecal material