Application device

Details Application device Application device

D - Textiles, Paper

21

H

D21H 23/48 (2006.01) B05C 5/00 (2006.01)

Patent

CA 2403004

The invention relates to a device (10) for directly or indirectly applying liquid or pasty application medium (16) to one or both sides of a material web (20) made of, in particular, paper or paperboard. The device comprises an application mechanism (12) which delivers the application medium (16) in the form of a free application medium stream (18) onto the material web (20). To this end, a device (30) for generating an electric field is provided in the vicinity of the application mechanism (12). Said electric field exerts a force onto the application medium stream (18), which is moving from the application mechanism (12) to the material web (20), while assisting the movement of said application stream (18). In addition or alternatively, edge guiding elements can be provided which guide the lateral edges of the application medium curtain (18) at least along a portion of the gravity-related movement thereof.

L'invention concerne un dispositif (10) pour appliquer, directement ou indirectement sur une ou deux faces, un milieu (16) d'enduction pâteux ou fluide sur une bande de matériau (20), notamment en papier ou en carton. Ce dispositif comprend un système d'application (12), qui distribue le milieu (16) d'enduction sous forme d'un filet (18) libre sur la bande de matériau (20). L'invention est caractérisée en ce que dans la zone du système d'application (12) se trouve un dispositif (30) pour produire un champ électrique qui exerce une force de soutien sur le mouvement du filet (18) d'enduction, qui se déplace du système d'application (12) vers la bande de matériau (20). En outre ou en solution de rechange, des éléments de guidage des bords guident les bords latéraux du rideau (18) d'enduction, au moins pour une partie de son mouvement conditionné par la force de gravitation.

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