Method and apparatus for drying a fiber web

Details Method and apparatus for drying a fiber web Method and apparatus for drying a fiber web

D - Textiles, Paper

21

F

D21F 5/00 (2006.01) D21F 1/32 (2006.01) F26B 13/10 (2006.01)

Patent

CA 2326743

The invention relates to a method and apparatus of drying a fiber web (5) which is dried between two tight bands (1, 2) that move in parallel and turn around turning rolls (6a, 6b, 7a, 7b), the first band (1) being heated and the second band (2) being cooled, the fiber web (5) being arranged to run through the drying zone defined by the bands (1, 2) together with at least two felts or wires (3, 4) such that the fiber web (5) is in contact with the surface of the first band (1), a coarse wire (4) is in contact with the surface of the second, cooled band (2), and a fine wire (3) is between the fiber web (5) and the coarse wire (4). The fine wire (3) is cleaned with a cleaning device (11).

L'invention concerne un procédé et un appareil de séchage d'une feuille continue (5) séchée entre deux bandes imperméables (1, 2) se déplaçant en parallèle et tournant autour de rouleaux rotatifs (6a, 6b, 7a, 7b), la première bande (1) étant chauffée et la seconde bande (2) étant refroidie. La feuille continue (5) est disposée de façon à passer avec au moins deux feutres ou toiles (3, 4) dans la zone de séchage définie par les bandes (1, 2), de sorte que la feuille continue (5) soit en contact avec la surface de la première bande (1), qu'une toile grossière (4) soit en contact avec la surface de la seconde bande refroidie (2), et qu'une toile fine (3) se trouve entre la feuille continue (5) et la toile grossière (4). On nettoie la toile fine (3) avec un dispositif de nettoyage (11).

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