Differential speed lay-on rolls in a web winding system

Abstract From the Canadian patent

A method and apparatus for the preparation of a wound roll of a web of material by utilizing, a surface windup device for automatically introducing a core onto a primary lay-on roll, automatically cutting the web so that it can be attached around a new core a , primary lay-on roll, that feeds the web of material onto the rotating core winding the web onto , the core to form a roll by driving the core with a secondary lay-on the differential in speed , between the primary and secondary lay-on rolls controls the tension of the web as it is wound. This invention also, incorporates a retractable cutting roll and knife assembly that is moved into position to cut the, web of material, assist …