| 摘要 |
The invention concerns a method in drying and/or cooling of a web. In the method the web (W) is passed over the circumference of a blow drum (10) or equivalent, and the web (W) is dried by means of a drying gas that is blown out of openings (44) that have been made into the mantle (12) of the blow drum (10) into the gap between the outer face of the blow drum (10) and the web (W). A support zone (11) formed by pressurized gas is formed between the outer face of the blow drum (10) and the web (W), and in the method the moistened gas is passed out of the support zone (11) into the interior of the blow drum (10) through openings (46) that have been made into the mantle (12) of the blow drum (10) into a set of exhaust ducts placed inside the blow drum (10). In the method the web (W) to be dried is supported in the lateral areas by means of a revolving edge support (22) placed at each end of the blow drum (10) separate from the blow drum (10), and the support zone (11) is sealed in the running direction of the web (W) by means of the circumferential faces and/or friction faces of the edge supports (22). The invention also concerns a device in drying and/or cooling of a web.
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