Patent ID: 6770172
Filing Date: 2004-08-03
Classification: D21F,Y10S,Y10T

Abstract:
A method of making a press felt, comprising:forming at least one base fabric preform; making the at least one base fabric preform into a closed-loop base fabric having predetermined dimensions in the cross-machine direction and the machine direction of a paper machine, and a first and a second longitudinal outer edge; forming the base fabric of one or more base fabric preforms that are continuous in the cross-machine direction; attaching at least one batt fibre layer onto the base fabric; providing both of the longitudinal edges of the press felt with longitudinal edge portions of a predetermined width from the longitudinal outer edge of the press felt and providing a midportion in the longitudinal direction of the press felt between the edge portions; and attaching different numbers of batt fibre layers onto the edge portions from the midportion of the press felt, whereby the structure of the press felt edge portions differ from the midportion.