Method and arrangement in the tail threading of a full width web in the dryer section of a fiber web machine

摘要

The invention relates to a method in the tail threading of a full width web in the dryer section of a fiber web machine, where the dryer section includes successive dryer groups (R1 - R9). Each dryer group (15) includes dryer cylinders (16) and turning rolls (17) as well as one dryer fabric (18) alternately supported on a dryer cylinder (16) and on a turning roll (17) as a single fabric run. On the side of the opening gap (21) formed by the dryer cylinder (16), which precedes the turning roll (17), and the dryer fabric (18), the full width web (22) is blown off from the dryer cylinder (16). Moreover, the pocket space (20) formed by the turning roll (17) and two dryer cylinders (16) is provided with a vacuum. An intensified vacuum is created in tail threading in the closing gap (24) formed by the dryer fabric (18) and the turning roll (17). The invention also relates to an arrangement in the tail threading of a full width web in the dryer section of a fiber web machine.