Method for producing corrugated cardboard

Details Method for producing corrugated cardboard Method for producing corrugated cardboard

B - Operations, Transporting

31

F

B31F 1/28 (2006.01) B31F 5/04 (2006.01)

Patent

CA 2625659

A method is provided for applying adhesive to the flutes of a corrugated sheet web. An applicator roll is provided with a uniform thin coating of adhesive by a metering rod. Exposed crests of the flutes are brought into contact with a coating of adhesive that has been applied to a surface of an applicator roll in order to provide a uniform bead of adhesive on the flute crests. The flutes are compressed against the applicator roll surface in a forward direction relative to the direction in which the web is moving adjacent the applicator roll surface. In one embodiment, the applicator roll has a surface linear velocity greater than the speed at which the web is traveling.

L'invention concerne un procédé d'application d'adhésif aux cannelures d'une bande de feuille ondulée. Elle concerne un rouleau applicateur qui est doté d'un revêtement d'adhésif mince et uniforme par une barre de dosage. Des crêtes exposées des cannelures sont mises en contact avec un revêtement d'adhésif qui a été appliqué à une surface d'un rouleau applicateur afin de créer un bourrelet d'adhésif uniforme sur lesdites crêtes. Ces cannelures sont comprimées contre la surface du rouleau applicateur dans une direction avant par rapport au sens de déplacement de la bande jouxtant la surface du rouleau applicateur. Dans un mode de réalisation, le rouleau applicateur a une vitesse linéaire superficielle supérieure à celle du déplacement de la bande.

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