Patent ID: 8821469

Claim:
A disposable pants-type wearing article having a front-back direction, a vertical direction and a transverse direction being orthogonal to one another, the article comprising: a front waist region and a rear waist region opposed to each other in the front-back direction and a crotch region extending between the front and rear waist regions; joined regions formed by putting flat and joining together the front and rear waist regions along respective side edges of the front and rear waist regions respectively opposed in the transverse direction and extending in the vertical direction; a waist-opening and a pair of leg-openings formed by the front and rear waist regions with the crotch region; and belt-shaped leg elastic members extending under tension along respective peripheral edges of the leg-openings; wherein the belt-shaped leg elastic members include at least one of natural rubber and synthetic rubber so as to be provided with stretch property and have a skin-facing side covered with a sheet member formed of at least one of a nonwoven fabric and a plastic film, the belt-shaped leg elastic members further include front side upper ends lying in the joined regions at the front waist region and rear side upper ends lying in the joined regions at the rear waist region, the front side upper ends include, in the joined regions, a first pair of lower edges of the belt-shape leg elastic members, the rear side upper ends include, in the joined regions, a second pair of lower edges of the belt-shape leg elastic members, and the lower edges in the second pair extending in parallel to the lower edges in the first pair, the lower edges of the belt-shaped leg elastic members at the front side upper ends and the lower edges of the belt-shaped leg elastic members at the rear side upper ends in the joined regions are displaced from each other in the vertical direction so that one of (i) the first pair and (ii) the second pair of the lower edges lies below the other pair of the lower edges, and the one pair of the lower edges that lies below is fusion-bonded to the sheet member covering the other pair of the lower edges at a level lower than the other pair of the lower edges.