Patent ID: 6083349
Filing Date: 2000-07-04
Classification: D21F

Abstract:
A machine for manufacturing a creped fibrous pulp web, comprising:a pre-pressing unit;a main shoe press including a contact press unit and a drying cylinder;the main press comprising a first shoe press with a first press opening having a beginning and a first length extending in a web run direction, the first press opening adapted to progressively increase a pressure in the first opening over at least a first one-third of the first length;the pre-pressing unit comprising a second shoe press with a second press opening having a beginning and a second length extending in the web run direction, the second press opening adapted to progressively increase a pressure in the second opening over at least a first one-third of the second length; anda creping doctor positioned in contact with the drying cylinder;wherein the length of the first press opening is within a range of approximately one-third to approximately two-thirds the length of the second press opening,wherein a linear force in the second press opening is greater than a linear force in the first press opening, andwherein a maximum pressure in the first press opening is greater than the maximum pressure in the second press opening.