Method and assembly for applying a multilayer coating

D - Textiles – Paper – 21 – H

Patent

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Details

D21H 23/56 (2006.01) D21H 19/82 (2006.01) D21H 19/84 (2006.01) D21H 23/30 (2006.01) D21H 25/14 (2006.01)

Patent

CA 2469065

A method and assembly is disclosed for manufacturing a two-layer coated paper web, the method comprising the steps of applying a coating furnish layer to at least one surface of said paper web, drying the applied coating furnish layer to a point allowing a next coating layer to be applied thereon. Onto the first coating layer is applied a second coating layer that is dried. The application of successive coating layers is continued until the desired coat thickness is attained. The coating layers are applied using a metering film transfer method operating without leveling of the applied coating layer by doctoring, whereby in at least one of said coating layers is used a furnish having a solids content of not less than 62 %.

L'invention concerne un procédé et un dispositif permettant de fabriquer une bande de papier couché à deux couches. Le procédé décrit dans cette invention consiste à appliquer une couche fibreuse d'enrobage sur au moins une surface de la bande de papier; à sécher la couche fibreuse d'enrobage jusqu'à un point permettant l'application d'une autre couche d'enrobage. Une seconde couche d'enrobage est appliquée sur la première couche d'enrobage, puis elle est séchée. L'application de couches d'enrobage successives est prolongée jusqu'à obtention de l'épaisseur de revêtement souhaitée. Les couches d'enrobage sont appliquées selon un procédé de transfert de film par comptage sans nivellement des couches d'enrobage appliquées par raclage. Une composition de fabrication présentant une teneur en solides égale ou supérieure à 62 % étant utilisée dans au moins l'une des couches d'enrobage.

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