Method and device for applying a medium on a running web of...

D - Textiles – Paper – 21 – H

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Details

D21H 23/28 (2006.01) D21H 23/70 (2006.01)

Patent

CA 2275993

The invention relates to a method and device for applying a liquid or pasty application medium on a running web of material, especially of paper or cardboard, in a twin wire area of a wet splitting device (33) of a paper machine. The inventive method is characterized in that an additional liquid or pasty application medium is applied on the web of material (38) by means of at least one applying device (14, 15, 16, 17, 25, 28, 31, 32, 36, 48, 52, 53) after a first press element (13) of the press section (34). The inventive device has the following features: an applying device (5, 10, 44, 46) is arranged in said twin wire area on at least one side of a wire (3, 4, 39, 40), said side being opposite the web of material; and at least one additional applying device (14, 15, 16, 17, 25, 28, 31, 32, 48, 52, 53) which directly faces the web of material is provided after a first press element (13) of a press section (34).

L'invention concerne un procédé et un dispositif permettant d'appliquer un milieu liquide ou pâteux sur une bande de matériau en déplacement, en particulier une bande de papier ou de carton, dans une zone à deux toiles de la partie humide (33) d'une machine à papier. Le procédé selon l'invention se caractérise en ce que un autre milieu liquide ou pâteux est appliqué sur la bande de matériau (38) après un premier élément de pressage (13) de la section de presses (34), au moyen d'au moins un dispositif d'application (14, 15, 16, 17, 25, 28, 31, 32, 36, 48, 52, 53). Le dispositif selon l'invention présente les caractéristiques suivantes: dans ladite zone à deux toiles, un dispositif d'application (5, 10, 44, 46) est placé, au moins sur un côté, sur le côté d'une toile (3, 4, 39, 40) opposé à la bande de matériau; et, après un premier élément de pressage (13) d'une section de presses (34), est monté au moins un autre dispositif d'application (14, 15, 16, 17, 25, 28, 31, 32, 48, 52, 53) qui fait directement face à la bande de matériau.

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