Coating blade

B - Operations – Transporting – 05 – C

Patent

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Details

B05C 11/04 (2006.01) C23C 28/04 (2006.01) D21H 23/34 (2006.01) D21H 25/10 (2006.01)

Patent

CA 2275878

A coating blade (5) for controlled application and smoothing of a coating composition on a travelling paper web (7) supported by a co-rotary roll (9), said blade (5) comprising a steel strip (13) elongated in a first direction between first and second edge sections, said first edge section engaging the paper web (7) and being provided with an abrasive wear resistant deposit (15) to extend the life of the blade, wherein an intermediate layer (17) positioned between said deposit (15) and said steel strip (13), said layer (17) having a higher resistance to abrasive wear than said deposit (15).

L'invention concerne une lame de couchage (5) permettant l'application contrôlée et le lissage d'une composition de couchage sur une bande de papier (7) en mouvement et supportée par un cylindre (9) co-rotatif. Cette lame (5) comprend une bande d'acier (13) qui s'étend, dans une première direction, d'une première à une seconde bordure. La première bordure qui est en contact avec la bande de papier (7), est dotée d'un revêtement (15) résistant à l'abrasion, ce qui prolonge la durée de vie de la lame. Une couche intermédiaire (17), insérée entre le revêtement (15) et la bande d'acier (13), a une résistance à l'abrasion supérieure à celle du revêtement (15).

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