Apparatus for drying a web of paper

D - Textiles – Paper – 21 – F

Patent

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Details

D21F 5/04 (2006.01)

Patent

CA 2325907

A drying section in a papermaking machine has a first section with a series of single-tiered drying cylinders having vacuum transfer rolls with external vacuum chambers therebetween for improving web runnability, and a second dryer section with a series of single-tiered drying cylinders having movable vacuum transfer rolls disposed therebetween for providing improved cross-directional web shrinkage restraint.

Une partie de séchage d'une machine de production de papier comprend une première partie présentant une série de cylindres de séchage en une seule rangée comprenant des rouleaux de transfert sous vide entre lesquels se trouvent des chambres sous vide extérieures destinées à améliorer le comportement de la bande, et une seconde partie de séchage dotée d'une série de cylindres de séchage en une seule rangée entre lesquels sont disposés des rouleaux de transfert mobiles sous vide permettant d'obtenir une meilleure limite du rétrécissement de la bande en sens transversal.

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