Patent ID: 7472860
Filing Date: 2009-01-06
Classification: B65H,Y10T

Abstract:
1. A method for winding a paper, board or material web, comprising the steps of: winding simultaneously a plurality of separate rolls, each of the plurality of rolls having a winding core, the winding cores forming a plurality of adjacent abutting winding cores having roll ends placed against each other, the ends formed by severing cuts which deviate from a plane perpendicular to an axis defined by each winding core, the cut end structure of at least one winding core abutting the cut end structure of an adjacent winding core, said abutting cut end structures being different in shape and not fully corresponding to each other; wherein the winding cores and the separate rolls formed thereon are positioned side by side supported on at last two winder drums; coupling the winding cores so that the axis defined by each winding core is aligned along a common axis of rotation during winding, by the roll ends placed against each other; loading the core ends against one another by core chucks arranged in connection with a first free end and a second free end of outermost winding cores, so that the winding core ends placed against each other are loaded longitudinally; and causing the winding cores to extend longitudinally by winding simultaneously the plurality of separate rolls; and as the web is wound on the winding cores, yielding longitudinally, portions of the winding cores ends formed by the severing cuts, said portions of the winding cores ends formed by the severing cuts having a profile of a depth and shape which do not fully correspond to each other so as to yield longitudinally, thus providing axial play between the winding cores.