Patent ID: 8202396
Filing Date: 2012-06-19
Classification: D21F,D21H

Abstract:
1. A structuring clothing for structuring a wet fibre web in a press process in a press section of a tissue papermaking machine, said structuring clothing comprising a carrying layer and a structured layer which contacts the fibre web and is supported by the carrying layer, said structured layer having a three-dimensional woven structure comprising longitudinal and transverse threads plaited into each other and forming elevations and depressions which are defined by the elevations, said elevations, like the depressions, are repeated and distributed in the longitudinal and transverse directions of the structuring clothing to form a pattern of polygonal, geometrically similar smallest unitary surfaces which are located adjacent each other and have common boundary lines, each of said smallest unitary surfaces having an area a and covering more depressions with the mean depth d , wherein the position and the alignment of each smallest unitary surface are defined by the fact that the corners thereof are coinciding with elevations which are displaced in relation to each other and formed by four consecutive longitudinal threads, characterised in that wherein the area a and the mean depth d of each smallest unitary surface of the structured layer are adapted in relation to each other in such a way that, calculated by the length unit mm, their a/d ratio is equal to or greater than 30 mm, wherein a is selected within the range of 1.0-3.0 mm 2 and d is selected within the range of 0.03-0.09 mm.