STRUCTURING BELT, PRESS SECTION AND TISSUE PAPERMAKING MACHINE FOR MANUFACTURING A HIGH BULK CREPED TISSUE PAPER WEB AND METHOD THEREFOR

A structuring layer (60) of a structuring belt (14) for structuring a wet fibrous web (1') in a press section (3) of a tissue papermaking machine for manufacturing high bulk tissue paper (1), said structuring layer having a web-carrying side with a surface (61) for cooperating with the fibrous...

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Bibliographische Detailangaben
Hauptverfasser:	THOMASSON, OLA, KLERELID, INGVAR
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	IMPREGNATING OR COATING OF PAPER METHODS OF PRODUCING PAPER THEREON PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PAPER-MAKING MACHINES PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRODUCTION OF CELLULOSE PULP COMPOSITIONS TEXTILES TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G
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Beschreibung
Zusammenfassung:	A structuring layer (60) of a structuring belt (14) for structuring a wet fibrous web (1') in a press section (3) of a tissue papermaking machine for manufacturing high bulk tissue paper (1), said structuring layer having a web-carrying side with a surface (61) for cooperating with the fibrous web, said surface having depressions (63) forming a three-dimensional structure of the surface. According to the invention, the depressions are distributed over the web-carrying side and constitute altogether 20-80 % of the surface (61), said surface including a flat, continuous top surface area (70) between the depressions (63), said top surface area delimiting the depressions, and each depression has a dimension 1 of 0.25-2.5 mm in a first direction in the plane of the top surface area (70), a dimension b of 0.25-2.0 mm in a second direction in the plane of the top surface area (70), said directions being at right angles to each other, a mean depth d of 0.05-0.6 mm and an area a as measured in the plane of the top surface area (70) of 0.3-4.0 mm2. The invention also relates to a structuring belt with such a layer, a press section with such a structuring layer, a tissue papermaking machine with such a press section, a method of manufacturing a structured high bulk tissue paper web in such a tissue papermaking machine, and use of the said belt, as well as a tissue paper web produced in the machine. L'invention concerne une couche de structure (60) d'une courroie de structure (14) pour structurer une bande fibreuse humide (1') dans une section de presse (3) d'une machine de fabrication de papier pour fabriquer du papier mince très bouffant (1), ladite couche de structure ayant un côté support de bande avec une surface (61) destinée à coopérer avec la bande fibreuse, ladite surface ayant des creux (63) formant une structure en trois dimensions de la surface. Selon l'invention, les creux sont distribués sur le côté support de bande et constituent ensemble 20 à 80 % de la surface (61), ladite surface comprenant une aire de surface supérieure continue, plate (70) entre les creux (63), ladite aire de surface supérieure délimitant les creux, et chaque creux a une dimension (1) de 0,25 à 2,5 mm dans une première direction dans le plan de l'aire de surface supérieure (70), une dimension (b) de 0,25 à 2,0 mm dans une seconde direction dans le plan de l'aire de surface supérieure (70), lesdites directions étant à des angles droits l'une par rapport à l'autre, une profondeur moy