Patented is a method of manufacturing an absorbent article in the form of a pants diaper or a sanitary panty. The method involves obtaining a web of several mutually joined flat blanks, with each of the blanks having an elongated absorbent body enclosed between two casing sheets, which, when at mutually opposing front and rear end parts of the absorbent body, have side parts that extend laterally beyond the body on both sides. The side parts have end edges separating the mutually joined blanks from each other by cutting individual blanks from the web of mutually joined blanks, folding each of the individual blanks so that the end edges of the blank’s side parts lie edge-to-edge. The method also involves providing a releasable and refastenable fastener having two elements that are joined to each other and mounting one of the two elements, which include mutually complementary members, of the releasable and refastenable fastener on the outside of the side parts of one of the front and rear end parts of each of the folded individual blanks, simultaneously while mounting the two elements on the outside of the side parts of the opposing front and rear end parts of the folded blank in order to releasably and refastenably connect to the opposing side parts to form a pants diaper or a sanitary panty. The diaper or panty will have a completed circumferential waist and defined leg openings.