A disposable pants-type diaper provided with a waist edge section that has straight line drapes and gives a comfortable wear feeling, characterized in that: in an inner layer (21) and an outer layer (22) at a waist edge section (W) of a covering body (12), a sheet bonded section (70) is formed by bonding with an adhesive (71), which is intermittently disposed in the width direction and continuous along the direction intersecting with the width direction, or by welding； an elastic stretchable member (17) in the waist edge section is interposed between the inner layer (21) and the outer layer (22) and fixed to the inner layer (21) and/or the outer layer (22) at a position intersecting with the sheet bonded section (70)； and, at an edge section of a waist opening (WO) in the waist edge section (W) of the covering body (12), neither the sheet bonded section (70) nor the elastic stretchable member (17) in the waist edge section is formed but a non-bonded and non-elastic stretchable member area (25), the longitudinal range of which is wider than the interval between the elastic stretchable member (17) in the waist edge section that is positioned closest to the waist opening (WO) and the elastic stretchable member (17) in the waist edge section that is adjacent thereto, is provided.La présente invention concerne une couche-culotte jetable dont une section ceinture est pourvue d'un drapé en ligne droite et procure une sensation confortable quand elle est portée, caractérisée en ce que : dans une couche interne (21) et une couche externe (22) au niveau d'une section ceinture (W) d'un corps de recouvrement (12), une section (70) en feuillets collés est formée par collage avec un adhésif (71), lequel est disposé de manière alternée dans le sens de la largeur et en continu le long de la direction croisant le sens de la largeur, ou par soudage ； un élément extensible élastique (17) dans la section ceinture est interposé entre la couche interne (21) et la couche externe (22) et f
