| 摘要 |
A problem associated with known circulating air dryers, e.g. for a textile material web is that the quantity of circulating air depends on both the desired drying behaviour and on the suspended guidance of the material web. A minimum quantity of circulating air must be maintained to prevent the position of the material from becoming unstable in the treatment chamber. The aim of the invention is to provide a circulating air dryer, in which the material web is suspended in a steady manner by a cushion of air, independently of the air flow. To achieve this, the nozzle chambers ( 7, 8 ), by means of which air is blown onto the material web ( 1 ) and evacuated through return flow channels, are equipped with elements for at least partially closing the return flow channels. This permits the air pressure between the material web ( 1 ) and the nozzle chambers ( 7, 8 ) and thus the carrying force of the air to be regulated. Said dryer can be used for the finishing of textiles.
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