Incontinence diaper

A disposable incontinence diaper (2), having a main part (4) having an absorbent element (6) and a longitudinal direction (8) and a transverse direction (10), comprising a front region (12) having forward lateral longitudinal peripheries (14), a back region (16) having rearward lateral longitudinal peripheries (18), and disposed therebetween a crotch region (20) that comes to lie between the legs of a user, and rearward side portions (22) which are joined to both sides of the back region (16) and which in the transverse direction (10) of the disposable incontinence diaper (2) extend beyond the rearward lateral longitudinal peripheries (18) of the main part (4) and in the region of that end (26) of said rearward side portions (22) that is free in the transverse direction (10) have in each case at least one closure means (28), whereas no side portions (22) are joined to the front region (14) but the forward lateral longitudinal peripheries (14) of the main part (4) form a free-ending longitudinal periphery of the diaper, wherein the rearward side portions (22) for placing and closing the disposable incontinence diaper (2) on a user are in each case capable of being placed around the body of the user in a circumferential direction and of being moved to an arrangement that overlaps with an external side of the front region (12), said rearward side portions (22) then being capable of being in each case releasably adhered to said external side of the front region (12) by way of the respective closure means (28), wherein the rearward side portions (22) in a planar spread-out but not elongated state have an extent (Q) in the transverse direction (10) beyond the respective rearward lateral longitudinal periphery (18) and within this extent (Q) are elastically elongatable in the transverse direction (10) and to this end have an elastic or elasticized region (42) that extends in the transverse direction (10) and in the longitudinal direction (8), and wherein the respective elastic or elasticized region (42) of the rearward side portions (22) has a spacing in the transverse direction from the rearward lateral longitudinal periphery (18) of at most 30 mm, wherein the rearward side portions (22) are folded onto themselves about at least two side portion folding axes (46, 48) that run in the longitudinal direction (8), part-regions (50, 52, 54) of the rearward side portions (22) that are folded onto one another being defined and delimited by said side portion folding axes (46, 48), and wherein a part-region (54) that is outboard in the transverse region (10) is configured so as to be substantially non-elongatable, and wherein a part-region (52) that inwardly adjoins the outboard part-region (54), proceeding from the outer folding axis (48) that runs in the longitudinal direction, by way of at least 50% of the area of said part-region (52) is configured so as to be non-elongatable.