Pants-type disposable diaper

A disposable pull-on diaper having a waist opening and a pair of leg openings and comprising a front portion adapted to be worn about the front of a wearer, a crotch portion adapted to be worn about the crotch of a wearer, and a rear portion adapted to be worn about the back of a wearer,

• the diaper further comprising a disposal tape on the outer surface thereof,
• the disposal tape comprising a fixed portion fixed to the outer surface of the diaper, an extensible portion, and a fastening portion arranged and Z-folded in that order along the longitudinal direction of the disposal tape,
• the fastening portion and the extensible portion in the Z-folded disposal tape being releasably attached to each other,
• the extensible portion and the fixed portion in the Z-folded disposal tape being releasably attached to each other,
• the extensible portion being extensible in the longitudinal direction of the disposal tape in an unfolded configuration of the disposal tape,
• the disposal tape in the unfolded configuration having a first connection region where the extensible portion and the fastening portion overlap and a second connection region where the extensible portion and the fixed portion overlap, at least one of the first connection region and the second connection region having a bonded region where the extensible portion and the overlapping fastening portion or fixed portion are bonded to each other and a non-bonded region where the extensible portion and the overlapping fastening portion or fixed portion are not bonded to each other, the non-bonded region being located longitudinally proximal to the bonded region,
• wherein at least one of the fastening portion and the fixed portion has a longitudinally proximal end corner in the non-bonded region thereof, the longitudinally proximal end corner being rounded off.