Device for acting upon webs of material with a flowing medium
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 13, 1989
Grant Date -
N/A
app pub date -
Mar 31, 1988
filing date -
Jul 31, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The device utilizes air or other flowing medium to act upon and guide in a hovering manner webs of material, particularly for drying the web. The device has an air duct or the like which comprises at least one nozzle region extending over the width of the web and having a curved wall surface running substantially parallel to the plane of movement of the web. The wall sections defining the air duct are provided with individual outlets opposite a respective guide surface for the air flow in the nozzle region on either side of a transverse plane arranged in the longitudinal direction of the air duct and perpendicularly to the plane of movement of the web. Preferably, there are two wall sections provided opposite one another, each having outlets and forming a guide surface for air flows issuing from the outlets in the other wall section. Preferably, the outlets in one wall section are offset from the outlets in the other wall section in the lateral and/or vertical direction. The device provides stable operating conditions even under varying temperature influences. It is also simple in design and therefore easy to produce.
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