A diaper having a front part (12), a back part (14) and an intermediate crotch part (13) which includes an absorbent body unit (1) which is joined to a fluid-impermeable bottom sheet (7) and to a fluid-permeable top sheet (9) which lies proximal to the wearer's body in use and which includes an opening...http://www.google.de/patents/US5792130?utm_source=gb-gplus-sharePatent US5792130 - Diaper with opening in top sheet
