D - Textiles – Paper – 21 – G
Patent
D - Textiles, Paper
21
G
D21G 3/00 (2006.01)
Patent
CA 2632686
The invention relates to a doctor blade for the roll of a paper or board machine and a method for manufacturing the doctor blade. At least one fiber fabric (6a), having its fibers coated with hard particles prior to lamination, is supplied to the vicinity of that surface (4) of the blade which terminates in a cutting edge (2). The particle size is less than 30 µm. There are typically several fiberglass sheets coated with hard particles and the disposition thereof is such that in the vicinity of blade surfaces, at least in the vicinity of the surface (4) terminating in the cutting edge, the wear resistance is better than in the mid-section of a blade edge (3).
La présente invention concerne une racle pour le rouleau d~une machine à papier ou à carton et un procédé pour fabriquer ladite racle. Au moins un tissu de fibres (6a), dont les fibres sont enduites de particules dures avant la stratification, est placé à proximité de la surface (4) de la racle qui se termine en arête de coupe (2). La taille de particule est inférieure à 30 µm. Il y a normalement plusieurs feuilles de fibre de verre enduites de particules dures et leur disposition fait en sorte que, à proximité des surfaces de racle, au moins à proximité de la surface (4) qui se termine en arête de coupe, la résistance à l~usure soit supérieure à celle de la section médiane d~une arête de racle (3).
Hede Hans
Matilainen Harri
Exel Oyj
Robic
LandOfFree
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