Method for producing calendered paper

D - Textiles – Paper – 21 – G

Patent

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D21G 1/00 (2006.01) D21F 7/00 (2006.01) D21F 11/00 (2006.01)

Patent

CA 2309656

A method for producing calendered paper by an on-line manufacturing system comprising at least a paper machine and a multi-nip calender. The method comprises following steps; removing water from a formed paper web by pressing, drying the pressed paper web by at least one dryer, calendering the dried web by the multi-nip calender, measuring a cross machine moisture profile or a variable relative thereto, and altering the moisture of the web so that the moisture profile of the web in cross direction is even when the web enters the first nip of the calender.

L'invention concerne un procédé de production de papier calandré au moyen d'un système de production en ligne, comprenant au moins une machine à papier et une calandre à plusieurs lignes de contact. Ledit procédé comprend les étapes suivantes: retrait de l'eau d'une bande de papier formée par pressage; séchage de la bande de papier pressée par au moins un séchoir; calandrage de la bande séchée au moyen de la calandre à plusieurs lignes de contact; mesure, transversalement par rapport au sens de production, d'un profil d'humidité ou d'une variable associée à celui-ci; et modification de l'humidité de la bande de sorte que le profil d'humidité de celle-ci, transversalement par rapport au sens de production, soit régulier lorsque la bande pénètre dans la première ligne de contact de la calandre.

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