A method for producing sanitary articles wearable as pants, said articles having a main body including a liquid-impermeable backsheet, a topsheet having a liquid-permeable central web and an absorbing core interposed between the backsheet and the topsheet, said sanitary articles being adapted to be imparted a crotch configuration with end portions arranged at the front and at the back of the wearer, and being provided with at least one pair of side panels to connect said end portions around the wearer's waist, said side panels having a proximal edge for fixing to said main body and a distal edge carrying a closure system to close the sanitary article around the wearer's waistline, wherein the method includes: - providing a web of a laminar material for said side panels, - applying on both of the side edges ( 32, 33) of the web of a laminar material a plurality of closing elements, said closing elements being staggered with respect to one another, wherein each closing element applied on one edge ( 32, 33) is located in a position equidistant from the other two closing elements that precede it and follow it but that are applied on the opposite edge ( 32, 33). - segmenting said web of a laminar material by cutting said web with cuts ( 91, 91 ') to produce a chain of said side panels, characterized in that the method includes: - providing two webs of a laminar material for two lateral containment webs of said topsheet, - connecting the side panels to the respective lateral containment web at the proximal edge thereof, - inverting and spacing the two lateral containment webs with said containment webs provided with the respective side panels, - aligning the two lateral containment webs by mutually aligning cross-wise pairs of side panels, - providing a web of a laminar hydrophilic material, and - connecting said laminar hydrophilic web with the two containment webs, said two containment webs being provided with the corresponding side panels mutually aligned cross-wise. - providing a web of a laminar material for said side panels, - applying on both of the side edges ( 32, 33) of the web of a laminar material a plurality of closing elements, said closing elements being staggered with respect to one another, wherein each closing element applied on one edge ( 32, 33) is located in a position equidistant from the other two closing elements that precede it and follow it but that are applied on the opposite edge ( 32, 33). - segmenting said web of a laminar material by cutting said web with cuts ( 91, 91 ') to produce a chain of said side panels, characterized in that the method includes: - providing two webs of a laminar material for two lateral containment webs of said topsheet, - connecting the side panels to the respective lateral containment web at the proximal edge thereof, - inverting and spacing the two lateral containment webs with said containment webs provided with the respective side panels, - aligning the two lateral containment webs by mutually aligning cross-wise pairs of side panels, - providing a web of a laminar hydrophilic material, and - connecting said laminar hydrophilic web with the two containment webs, said two containment webs being provided with the corresponding side panels mutually aligned cross-wise.