Apparatus for treating material webs

Abstract

Apparatus for treating material webs. For the purpose of treating material webs (10), especially drying them, these are acted on by a (heated) gaseous medium via slot nozzles (13, 14) in the area of a drying chamber (11). Depending on the operating conditions and the material web, the flow conditions of the gaseous medium must be capable of being adapted in the area of the material web, since the material web (10) may otherwise be adversely affected, for example as a result of an excessive supply of heat. The slot nozzles (13, 14) are designed in such a way that, in order to change the flow conditions, the exit of the gaseous medium from different nozzle slots can be adjusted by means of a control device, especially a slide device. By means of different outflow directions of the nozzles, an influence can be exerted on the flow conditions and the supply of heat, depending on the operating condition of the drying chamber (11). The apparatus is suitable for treating material webs, for example for drying coated material webs.

Dependencies are inferred from the claim text.