| 摘要 |
<p>Device in a paper machine in guiding the web (W) and in particular in guiding the leader (R) of the web. The device operates in a paper machine in the area between the centre roll (12) of the press section and a separate press nip (N4) in the press section. The separate press nip (N4) is formed between a smooth-faced upper roll (25) and a hollow-faced lower roll (26). Around this lower roll (26), the lower felt (17) of the separate press is placed, said lower felt (17) running from a suction-transfer roll (16) placed at the proximity of the centre roll (12) as a straight run into the separate press nip (N4). At the initial end of the straight run of the felt (17) of the separate press nip (N4), in connection with the guide roll (16), air-transfer devices (30,40,50) are fitted, by whose means a reduced pressure is produced at least across the width of the leader (R) in connection with the closing inlet nip (N) between said felt (17) and the leader (R) and/or in connection with the opening outlet nip (Na) between said guide roll (16) and the straight run of the felt (17). <IMAGE></p> |
