D - Textiles – Paper – 21 – D
Patent
D - Textiles, Paper
21
D
D21D 1/20 (2006.01)
Patent
CA 2727958
A refiner (1, 18, 19), method for refining fibrous material and a blade segment for a refiner. The re-finer comprises at least one first refining surface (4, 11) and at least one second refining surface (4, 11), which are arranged at least partly substantially opposite to one an-other in such a manner that a refiner chamber (12) is formed between them, to which the material to be defi-brated is arranged to be fed. At least the first refining sur-face or the second refining surface is arranged to move in relation to the opposite refining surface. The first refining surface comprises elongated openings (14, 15) provided through the first refining surface, through which fibrous material to be refined is arranged to be fed into the refiner chamber, and/or the second refining surface comprises elongated openings (14, 15) provided through the second refining surface, through which fibrous material refined in the refiner chamber is arranged to be discharged from the refiner chamber. The elongated openings provided through the refining surface are arranged at an angle transverse to the blade bars and blade grooves of the re-fining surface on the first and/or second refining surface.
L'invention concerne un raffineur (1, 18, 19, un procédé de raffinage de matériel fibreux et un segment de lame pour raffineur. Le raffineur comprend au moins une première surface de raffinage (4, 11) et au moins une seconde surface de raffinage (4, 11), qui sont disposées au moins partiellement sensiblement à l'opposé l'une de l'autre, de manière qu'une chambre de raffinage (12) soit formée entre ces surfaces et alimentée par le matériel à défibrer. Au moins la première surface de raffinage ou la seconde surface de raffinage est destinée à se déplacer par rapport à la surface de raffinage opposée. La première surface de raffinage comprend des ouvertures allongées (14, 15) qui traversent la première surface de raffinage et par lesquelles le matériel fibreux à raffiner alimente la chambre de raffinage, et/ou la seconde surface de raffinage comprend des ouvertures allongées (14, 15) qui traversent la seconde surface de raffinage et par lesquelles le matériel fibreux raffiné dans la chambre de raffinage est destiné à être évacué de cette chambre. Les ouvertures allongées traversant la surface de raffinage sont disposées selon un angle transversal aux barres de lame et aux rainures de lame de la surface de raffinage sur la première et/ou la seconde surface de raffinage.
Halla Jorma
Lindroos Kati
Partanen Markku
Vanni Kauko
Gowling Lafleur Henderson Llp
Metso Paper Inc.
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