1. A method of manufacturing an absorbent disposable diapers (2) open type with the main part (4) containing the front area (6) with front side longitudinal edges (42), the rear area (8) with rear side longitudinal edges (41) and located 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 sections (20) connected to both sides of the rear region (8) (20) ) and connected on both sides with the front region (6), the front side sections (22) that extend laterally (30) outward beyond the side front and rear longitudinal edges (42, 41) of the main part (4) and in the superimposed state of the absorbent disposable diaper (2) are connected with each other, the front region (6) and the rear region (8),! in order to form areas of cutouts for the legs, the side sections (20, 22), at least on the edges facing the crotch area (10), are made obliquely to the longitudinal direction (28) or curved, and the main part (4), at least least in the crotch area is made in the form of an hourglass,! wherein the method includes the following steps:! - supply of an infinite flat panel (50, 50a) of material in the longitudinal direction (28) for the manufacture of segments (66, 66a) of material for the formation of side sections (20, 22),! - the implementation of the first grooves (52) of material along the first line (100) of cutting on the lateral edge (70, 70a, 70b) of the flat panel (50, 50a) of the material to form contour cuts in the flat panel (50, 50a) of the material, with an imaginary parallel PL longitudinal direction1. Способ изготовления адсорбирующих одноразовых подгузников (2) открытого типа с главной частью (4), содержащей переднюю область (6) с передними боковыми продольными кромками (42), заднюю область (8) с задними боковыми продольными кромками (41) и расположенную между ними в продольном направлении (28), предназначенную для н