Perforated Rolls in Paper and Board Machines

2012-03-02T10:39:14+00:00 Categories: Papermachine Rolls|Tags: , , , , , |

6.2.2 Perforated Rolls Perforated rolls are used in the wire section as well as in the press and dryer sections. Their open area (2 to 85 %, total area of the openings/holes related to the overall roll surface) and their design vary considerably. Their tasks are . • to dewater the paper web . • [...]