The invention relates to a method for detection of a synchronizing mark (6) beingused in synchronized positioning of at least one essentially continuous materialweb (2), for manufacturing products (20) that comprise printed motifs (5； 5')or similar processed elements, which said material web (2) is intended to be dividedinto a nominal division length (LN) and comprises synchronizing marks (6) witha periodicity (Ls), which method comprises: detection of the respective synchronizingmark (6) for positioning the respective motif (5； 5') in a predeterminedposition on the respective product (20), which detection is carried out alonga predetermined in the machine direction longitudinal section (24) of said materialweb (2). The invention is characterized in that it comprises: detection of saidsynchronizing mark (6) by distinguishing its colour or colour combination fromcolours or colour combinations in the rest of said section (24). The inventionalso relates to an arrangement for such detection, and an absorbent product.
