An absorbent sanitary article comprising a central body including a topsheet, a backsheet and an absorbent core interposed between said topsheet and said backsheet, said article comprising at least one pair of side panels extending laterally from side edges of said central body, said side panels having respective proximal edges fixed between respective side edges of said topsheet and backsheet, wherein said proximal edges of said side panels are fixed by means of first welds to said topsheet only and by means of second welds both to said topsheet and to said backsheet.