Patent ID: 7381307
Filing Date: 2008-06-03
Classification: D21F,Y10S,Y10T

Abstract:
1. A method of manufacturing a press felt, the method comprising: forming a base fabric comprising at least one layer, wherein the at least one layer comprises at least a first planar component, which is formed from a plurality of longitudinal yarns that travel in the machine direction and from transverse yarns that travel in the cross machine direction, and the first component is provided with a first transverse joining edge area and a second transverse joining edge area, arranging the first transverse joining edge area and the second transverse joining edge area of the first component to overlap each other and forming a base fabric with the shape of a closed loop, attaching at least one batt fiber layer to the base fabric with the shape of a closed loop, and attaching the joining edge areas undetachably to each other before the attachment of the batt fiber layer, and the method further comprising: forming at least one thinned joining edge area, where the density of transverse yarns is smaller than in the other portions of the first component, arranging permeability in the overlapping joining edge areas to substantially correspond to that in the rest of the base fabric, and pressing the joining edge areas of the first component against each other during the attachment by a predetermined force so that the thickness of the overlapping joining edge areas substantially corresponds to the thickness of the rest of the first component.