Movement of layers and induced tension in the nip area between drum and paper layers

During paper manufacture and processing production losses occur during winding of machine-wide paper rolls and finished rolls due to winding faults. During the winding process at least one drum (steel or rubber-covered) is in contact with the winding roll and creates a nip area where tension and shifting of layers are induced. This process in the nip area with several layers of paper is not known in detail but the knowledge would be helpful to improve winding processes