Assembly for a paper web coating line

Details Assembly for a paper web coating line Assembly for a paper web coating line

D - Textiles, Paper

21

H

D21H 25/06 (2006.01) D21F 5/00 (2006.01) D21H 23/70 (2006.01)

Patent

CA 2177606

The method comprises threading the tail of a paper web(1)to be coated through a coating line during startup or web break,in which method an edge strip is slit from the web to act as the tail of the web which is first threaded through the line and then widened to the normal width of the web by moving the edge strip slitter. Said edge strip is first guided to a movable support element (12) located after the edge strip slitting point in the travel direction of the web (1) and the strip is supported against said movable support element (12) and is passed supported by said movable support element (12) to the next support element (14).A guiding/auxiliary support element (31) is brought to the discontinuity points of web support path and the edge strip is passed with the help of said auxiliary support element over the discontinuity and the edge strip is passed through the entire coating line supported by said sequential support elements (2, 12, 14, 18, 19, 22, 25) and said guiding/auxiliary support elements (31).

Procédé d'enfilage de l'extrémité d'une bande de papier (1) destinée à passer dans une chaîne de couchage, lors de la mise en route de la chaîne ou à la suite d'une rupture de la bande. Ledit procédé consiste à découper dans la bande principale une bordure qui constitue la queue de bande et qui est d'abord enfilée dans la chaine puis élargie jusqu'à la largeur normale de la bande par déplacement du découpeur de bordure. Ladite bordure est d'abord guidé vers un élément de support mobile (12) situé après son point de détachement dans le sens de défilement de la bande (1), puis porté par ledit support mobile (12) jusqu'à l'élément de support suivant (14). Un élément de support auxiliaire et de guidage (31) est amené jusqu'aux points de discontinuité du chemin de support de bande; la bordure franchit alors la discontinuité à l'aide de l'élément de support auxiliaire et de guidage puis passe à travers l'ensemble de la chaîne de couchage, portée par la série d'éléments de supports (2, 12, 14, 18, 19, 22, 25) et par les susdits éléments de supports auxiliaires et de guidage (31).

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