Method and device in paper web transfer

Details Method and device in paper web transfer Method and device in paper web transfer

D - Textiles, Paper

21

F

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

Patent

CA 2288856

The invention relates to a method in threading of a paper web, in which a tail (T) separated from the edge of the paper web is transferred with threading guiding means arranged in connection with the mobile parts of a paper machine. Before introducing the tail to the guiding means, it is folded by turning it at a line (L) extending in the longitudinal direction of the tail (T), wherein the thickness of the tail is increased. The invention also relates to a method for strengthening the edge of a full-width paper web. The edge of the paper web is folded over an area of a predetermined width, wherein the thickness of the edge increases.

Cette invention se rapporte à un procéde d'enfilage d'une bande de papier, dans lequel on forme une extrémité de queue (T) eloignée du bord de la bande de papier, pour permettre son transfert à l'aide d'une guide d'enfilage disposé en association avec les parties mobiles d'une machine à papier. Avant d'introduire l'extrémité de queue dans le guide, on la replie autour d'une ligne (L) s'étendant dans le sens longitudinal de l'extrémité de queue (T), ce qui augmente l'épaisseur de l'extrémité de queue. Cette invention se rapporte également à un procédé permettant de renforcer le bord d'une bande de papier pleine largeur. A cet effet, le bord de la bande de papier est replié sur une zone d'une largeur prédéterminée, augmentant ainsi l'épaisseur dudit bord.

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