Method for producing disposable incontinence diapers having a main part, wherein the main part comprises a back region, and having diaper side parts joined to the back region on both sides, wherein the diaper side parts have an upper periphery and a lower periphery, wherein the upper periphery and the lower periphery extend obliquely with respect to the longitudinal direction of the disposable incontinence diaper or in a contoured manner and the lower periphery delimits a leg opening region that extends obliquely with respect to the longitudinal direction of the disposable incontinence diaper or is contoured, the method comprising the following steps - conveying a material web (50, 50a, 50b) in a machine direction, wherein the material web (50, 50a, 50b) has a first material-web periphery and second material-web periphery, - making first cuts through the material web (50, 50a, 50b) and obliquely with respect to the machine direction so as to at least regionally form upper peripheries and lower peripheries of single-use diaper side-part portions (23, 23a) which are arranged alternately along the material web (50, 50a, 50b) in the machine direction, such that single-use diaper side-part portions (23, 23a) that follow one another directly in the machine direction are arranged in a manner rotated through 180° in the plane with respect to one another, wherein first separating lines of the first cuts do not extend as far as the first and second material web peripheries (51, 52) of the material web (50, 50a, 50b) and so the material web (50, 50a, 50b) initially remains endless, - folding the still endless material web (50, 50a, 50b) at least about two folding lines, extending in the machine direction, to form a folded arrangement, wherein at least one of the folding lines crosses the first separating lines, - separating off the single-use diaper side-part portions (23, 23a) transversely or obliquely with respect to the machine direction. - conveying a material web (50, 50a, 50b) in a machine direction, wherein the material web (50, 50a, 50b) has a first material-web periphery and second material-web periphery, - making first cuts through the material web (50, 50a, 50b) and obliquely with respect to the machine direction so as to at least regionally form upper peripheries and lower peripheries of single-use diaper side-part portions (23, 23a) which are arranged alternately along the material web (50, 50a, 50b) in the machine direction, such that single-use diaper side-part portions (23, 23a) that follow one another directly in the machine direction are arranged in a manner rotated through 180° in the plane with respect to one another, wherein first separating lines of the first cuts do not extend as far as the first and second material web peripheries (51, 52) of the material web (50, 50a, 50b) and so the material web (50, 50a, 50b) initially remains endless, - folding the still endless material web (50, 50a, 50b) at least about two folding lines, extending in the machine direction, to form a folded arrangement, wherein at least one of the folding lines crosses the first separating lines, - separating off the single-use diaper side-part portions (23, 23a) transversely or obliquely with respect to the machine direction.