Pressure-sensitive tape fastener for disposable diapers

Claim 1

In a disposable diaper having a topsheet, a backing sheet and an absorbent core interposed therebetween, the improvement comprising a pressure-sensitive tape fastener having an upper surface and a lower surface, said lower surface being divided widthwise into two end segments at least one of which is adhesively treated, and an adhesively treated middle segment, one of said end segments being a fixed end segment which is secured to said backsheet, the other of said end segments being a releasable end segment, said middle segment being covered on the lower surface of said pressure sensitive fastener with a plastic material having a retiform surface defining a system of hill portions and valley portions, said hill portions covering said adhesively treated lower surface of said middle segment, and said valley portions exposing said adhesively treated lower surface; said fastener when in non-operating position being folded in a manner such that said releasable end segment and said middle segment are superimposed over said fixed end segment with the lower surface of said releasable end segment being in contacting relation and releasably secured to the hill portions of said middle segment.