Method and apparatus for stabilizing the running of a web in...

D - Textiles – Paper – 21 – F

Patent

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Details

D21F 5/18 (2006.01) B65H 23/24 (2006.01) D21F 5/00 (2006.01)

Patent

CA 2365683

A method and a device for stabilising the web run in a paper machine or the like having a blow suction module (12) mounted above and/or below the web. The blow suction module comprises a blow nozzle unit (14) extending across the web, through which gas, such as air or combustion gas, is blown against the web (10) from the blow nozzle unit, and a first air discharge unit (18) arranged on the front side of the blow nozzle unit, and a second air discharge unit (22) arranged on the back side of the blow nozzle unit, which remove air or gas from between the web and the blow suction module. The blow suction module is asymmetric regarding the first and second air discharge units, so that more air or gas is discharged via the first air discharge unit than via the second air discharge unit.

Cette invention concerne un procédé et un dispositif permettant de stabilise une bande de papier dans une machine à papier comprenant un module d'aspiration/soufflage (12) monté au-dessus et/ou au-dessous de la bande. Ce module comprend une unité à buse soufflante (14) disposée au travers de la bande par laquelle un gaz, tel que de l'air ou un gaz de combustion, est projeté contre la bande (10), ainsi qu'une première unité de décharge d'air (18) à l'avant de l'unité à buse soufflante, et une seconde unité de décharge d'air (22) au dos de l'unité à buse soufflante qui extraient l'air compris entre la bande et le module d'aspiration. Ce module est disposé de manière asymétrique par rapport aux première et seconde unités de décharge d'air, de sorte d'avantage d'air ou de gaz est déchargé par la première unité de décharge que par la seconde.

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