Method and arrangement for detection of a synchronizing mark being used in synchronized positioning of at least one essentially continuous material web
A method for detection of a synchronizing mark (6) being used in synchronized positioning of at least one essentially continuous material web (2), for manufacturing products (20) that have printed motifs (5； 5′) or similar processed elements, which material web (2) is intended to be divided into a nominal division length (LN) and has synchronizing marks (6) with a periodicity (LS), which method includes: detection of the respective synchronizing mark (6) for positioning the respective motif (5； 5′) in a predetermined position on the respective product (20), which detection is carried out along a predetermined in the machine direction longitudinal section (24) of the material web (2), and detection of the synchronizing mark (6) by distinguishing its color or color combination from colors or color combinations in the rest of said section (24). An arrangement for such detection, and an absorbent product.
