Winding device

Abstract

The invention relates to a winding device for winding a travelling web of material, said winding device comprising at least one blade for slitting the web of material in the web direction into several partial webs of material and comprising a folding device for folding over the edges of the partial webs of material In order to provide a winding device that allows a web of material to be wound with folded over edges in the simplest possible manner and without folds, an oscillating device is provided, with which the at least one blade can be moved transversely to the direction of the web.

1 . Winding device for winding a travelling web of material,
 comprising at least one blade for slitting the web of material in the web direction into several partial webs of material and   comprising a folding device for folding over the edges of the partial webs of material,   characterized by   an oscillating device, with which the at least one blade can be moved transversely to the direction of the web.   
     
     
         2 . Winding device, as claimed in  claim 1 , characterize in that the oscillating device comprises a driven belt, to which the at least one blade is attached. 
     
     
         3 . Winding device, as claimed in  claim 1 , characterize in that the oscillating device comprises a cutter bar, which is driven by a linear motor and to which the at least one blade is attached. 
     
     
         4 . Winding device, as claimed in  claim 1 , characterize by a control unit for actuating the oscillating device. 
     
     
         5 . Winding device, as claimed in  claim 1 , characterize in that the web of material is a stretch film produced on a cast film extrusion line or a blown film line.