D - Textiles – Paper – 21 – G
Patent
D - Textiles, Paper
21
G
D21G 7/00 (2006.01) B65H 20/00 (2006.01) B65H 37/00 (2006.01) D21F 5/00 (2006.01) D21G 1/00 (2006.01)
Patent
CA 2336899
In the method in moistening of a web, water is applied with a wetting device (2) in a predetermined point on the surface of a paper web (W) or the like passing by the point, and the web is thereafter passed to a calender (C). The liquid is applied at such an early stage that before the surface treatment, the fibres exposed to wetting in the paper web (W) or the like have the time to absorb it at least 80 % of the amount of liquid they are capable of absorbing. The distance travelled by the web between the drying section and the calender is increased with rolls (1) which guide the web (W) along a winding path.
L'invention concerne un procédé permettant de mouiller une bande, l'eau étant appliquée au moyen d'un dispositif de mouillage (2), à un point déterminé de la surface d'une bande de papier (W) ou analogue, par passage par le point, la bande étant ensuite passée dans une calandre (C). Le liquide étant appliqué à un stade très précoce avant le traitement de surface, les fibres de la bande de papier (W) ou analogues exposées au mouillage ont le temps d'absorber au moins 80 % de la quantité de liquide. La distance parcourue par la bande, entre la section de séchage et la calandre est augmentée par des rouleaux qui guident ladite bande (W) le long d'un chemin d'enroulement.
Heikkinen Antti
Tani Mikko
Gowling Lafleur Henderson Llp
Metso Paper Inc.
Valmet Corporation
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