1. An open-type absorbent disposable diaper (2) used for incontinence with a main part (4) including a front region (6) with front lateral longitudinal edges (42), a rear region (8) with rear lateral longitudinal edges (41) and lying between them in the longitudinal direction (28), intended to be applied between the legs of the user, the crotch region (10), and the main part (4) contains an absorbent body (12), and with rear side parts attached to both sides of the rear region (8) ( 20) and with attached on both sides to front region (6) with front side parts (22), which in the transverse direction (30) protrude outside the side front and rear longitudinal edges (42, 41) of the main part (4), and the rear side parts (20) contain close to the holes for the legs, locking means (32) with auxiliary locking devices, while the locking means (32) are made with the possibility of detachable fastening, at least on the outer side of the front side parts (22), so that due to this, the front region (6) and the rear region (8) can be connected to each other hom, while for the formation of the rear regions (51) of the leg openings, the lower edge (64) of the rear side part (20) is made curved, characterized in that the lower edge (64) of the rear side parts (20) of length A and width B has a convex plot (44) with an extremum point P, the ratio of the length A to the width B of the lower edge (64) of the rear side part (20) is from 0.40 to 0.90, and the ratio of the longitudinal indent E of the extremum P to its transverse indent F ranges from 0.15 to 0.80.2. An absorbent disposable diaper used for incontinence (2) according to claim 1,1. Абсорбирующий одноразовый используемый при недержании подгузник (2) открытого типа с главной частью (4), включающей переднюю область (6) с передними боковыми продольным кромками (42), заднюю область (8) с задними боковыми продольным кромками (41) и лежащую между ними в продольном направлении (28), предназначенную для наложения между ногами пользо
