A method for manufacturing absorbent sanitary products, comprising the steps of : - forming a first and a second continuous elastic band (12, 14), which are movable parallel to each other in a machine direction (MD), - fixing a plurality of absorbent panels (18) between said first and second continuous elastic bands (12, 14), arranged in a direction transverse to the machine direction (MD), and spaced apart in said machine direction (MD), wherein each of said elastic bands (12, 14) is formed by means of a method comprising the steps of: - continuously feeding a plurality of tensioned elastic threads (30) in said machine direction (MD), - continuously feeding a pair of non-elastic webs (32, 34) arranged on opposite sides of said plurality of elastic threads (30), - welding said pair of non-elastic webs (32, 34) to each other by means of a welding pattern comprising anchoring welds (36) and/or containing and guiding welds (38), wherein the anchoring welds (36) comprise pairs of welds (36) arranged on opposite sides of a respective elastic thread (30) having proximal surfaces facing the elastic thread (30), spaced apart by a distance less than the diameter of the non-tensioned elastic thread, and wherein the containing and guiding welds (38) comprise pairs of welds (38) arranged on opposite sides of a respective elastic thread (30) having respective proximal surfaces facing the respective elastic thread (30), spaced apart by a distance equal to or greater than the diameter of the non-tensioned elastic thread.
