Method and device in threading of a paper web

Details Method and device in threading of a paper web Method and device in threading of a paper web

D - Textiles, Paper

21

F

D21F 7/00 (2006.01) D21F 9/00 (2006.01) D21G 9/00 (2006.01)

Patent

CA 2206838

The invention concerns a method in threading of a paper web from the dryer section to a following finishing device by means of a rope threading arrangement. In the method, in the dryer section (11), a leader strip is separated from the edge of the paper web (W), said leader strip is guided to between the ropes (K1, K2) included in the rope threading arrangement, and the leader strip is carried to the finishing device (10) on support of the ropes (K1, K2). At the inlet side of the last drying cylinder (2a) in the dryer section (11), a rope gap (KK) is formed out of the ropes (K1, K2), and the leader strip, which is supported by the drying wire (5), is transferred by means of air blowing into said rope gap (KK). The leader strip is passed by means of said ropes (K1, K2) over the last drying cylinder (2a) to the finishing device (10). The invention also concerns a device intended for carrying out the method.

L'invention concerne un procédé de défilement d'une bande continue de papier depuis une zone de séchage jusqu'au dispositif de finissage suivant à l'aide d'un mécanisme de défilement à câbles. Selon ce procédé, une bande amorce est séparée du bord de la bande continue de papier (W), dans la zone de séchage (11), guidée entre les câbles (K¿1?, K¿2?) se trouvant dans le mécanisme de défilement à câbles et amenée vers le dispositif de finissage à câbles (10) en appui sur les câbles (K¿1?, K¿2?). Du coté d'admission du dernier cylindre sécheur (2a) dans la zone de séchage (11), un espace (KK) est ménagé entre les câbles (K¿1?, K¿2?) et la bande amorce, soutenue par la toile de séchage (5), y est transférée au moyen d'un organe pneumatique. La bande amorce est amenée, à l'aide des câbles (K¿1?, K¿2?), au-dessus du dernier cylindre sécheur (2a) en direction du dispositif de finissage (10). L'invention concerne également un dispositif conçu pour appliquer ce procédé.

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