Method and apparatus for manufacturing surface-treated...

Details Method and apparatus for manufacturing surface-treated... Method and apparatus for manufacturing surface-treated...

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 2336959

In the method for manufacturing surface-treated printing paper, a paper web is first dried down to a target moisture of the surface treatment, and it is wetted again to the target moisture before the surface treatment. The re-wetting to the target moisture is conducted on the web running to the surface treatment before a device effecting the surface treatment of the web, as seen in the travel direction of the web. Before re-wetting, the moisture profile of the web is adjusted in the drying section by wetting the web at a point which is located before the area of the heavy shrinkage (cd shrinkage area) in the travel direction of the web.

L'invention concerne un procédé de fabrication d'un papier pour impression traité en surface, dans lequel une bande de papier est premièrement séchée à un degré d'humidité cible inférieur de traitement de surface, puis est mouillée à nouveau pour obtenir l'humidité cible avant le traitement de surface. Le remouillage pour obtenir le degré d'humidité cible est effectué sur la bande pendant qu'elle se déplace vers la zone de traitement de surface, avant qu'un dispositif ne mette en oeuvre le traitement de surface de la bande, comme le montre le sens de déplacement de la bande. Avant remouillage, le profil d'humidité de la bande est corrigé dans la section de séchage par mouillage de la bande jusqu'à un point situé avant la zone de fort retrait (zone de retrait ST) dans le sens de déplacement de la bande.

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