System for guiding web patching using a re-reeler

A system in connection with a paper machine re-reeler, and an off-line coating machine, in which the paper machine forming a web includes means for creating a defect map showing deviations and displaying the defect map to an operator, and the system includes a computer application for maintaining patching rules and for guiding patching using the re-reeler according to the patching rules, and the off-line coating machine has means for displaying selected deviations to the operator, wherein the system includes means for monitoring a virtual location of a deviation through the off-line coating machine and, if a possible web break occurs, for localizing the deviation relative to the web break, and means for providing feedback based on this monitoring to the patching rules of the re-reeler, in order to optimize them, and the system includes a display on the coating machine and processor means arranged to display virtually the location of a deviation through the off-line coating machine, the processor means calculating a momentary location of the deviation relative to the off-line coating machine.