| 摘要 |
<p>Gaseous or vaporous treatment agent is repeatedly blown on to and again drawn off from a travelling run of cloth after each operation in the heat treatment especially the drying, of the run of cloth, and the gaseous or vaporous streams of treatment agent are directed in counterflow to the direction of travel of the run of cloth during the entire treatment or parts of the entire treatment in such a way that the treatment agent, drawn off from the run of cloth after the treatment action in zones of treatment downstream, is returned in whole or in part into zones of treatment further upstream, there again blown onto the run of cloth, and only thereafter abstracted from the overall treatment. In apparatus for carrying out the method, a plurality of nozzles are arranged above and/or below the run of cloth (10) in a treatment chamber (11) with an intake opening (17) and a discharge opening (18) for the run of cloth, and spaced are provided between the nozzles for flow of treatment agent drawn off from the cloth, and the supplying of fresh treatment agent to the nozzles with reference to the direction of travel of the run of cloth through the treatment chamber takes place in downstream zones of the treatment and the exhaustion of spent treatment agent from the treatment chamber takes place in treatment zones further upstream. The nozzles may be arranged in groups, or combined in nozzle housings (12). <IMAGE></p> |
