Patent ID: 7993321

Claim:
A disposable diaper, comprising: a diaper body having a top sheet, a back sheet, and an absorbent body enclosed between the top sheet and the back sheet; a pair of side flaps fixed to the diaper body; and a pair of fasteners; wherein the diaper body further has a pair of side edges extending in a longitudinal direction of the diaper body; wherein each of the side flaps extends in a width direction of the diaper body and has an inner end being disposed inboard of a respective one of the side edges of the diaper body and an outer end being disposed outboard of the respective side edge of the diaper body, and each of the fasteners is fixed to the outer end of one of the side flaps; and wherein each of the side flaps is fixed to the diaper body at a fixing part being arranged adjacent and along an inner edge of the inner end of the respective side flap, a first joint part located at an upper part of the inner end of the respective side flap, and a second joint part located at a lower part of the inner end of the respective side flap, the lower part being spaced in the longitudinal direction from the upper part, and the fixing part being spaced, in the width direction of the diaper body, from the joint parts by a bonding-free region in which the side flap is free of direct attachment to the diaper body; and wherein a pulling force, which occurs when the fastener fixed to each of the side flaps is pulled transversely outwardly in use, is dispersed into first and second tensile forces directed towards the first and second joint parts, respectively, and concentrated around leg and waist openings of the diaper for enhanced fit of the diaper on a wearer in use.