| 摘要 |
<p>The invention relates to process for treating a fiber web, especially a board web, in which process fiber web is guided into a processing zone that is created in between a belt (21) and at least one cylinder or roll (14, 16) and/or in between two belts (22, 23), in which processing zone the fiber web (w) is treated, advantageously calendered, during a dwell time. In the process the fiber web is treated in the processing zone for a long dwell time for at least 200 ms and in moderate temperatures in the range of 60 - 180 ºC. The processing zone comprises at least three stages in any order: a short-treatement stage, a loading stage and a long-treatment stage. In the short-treatment stage the dwell time is less than 200 ms and the load is 0,01- 10 MPa. In the loading stage the dwell time is 1 €• 20 ms and the load is 0,1 €• 100 MPa. In the long-treatment stage the dwell time is more than 100 ms and the load is 0,01 €• 10 MPa. The invention also relates to a device for treating a fiber web.</p> |
