Method of controlling adhesive build-up on a yankee dryer

B - Operations – Transporting – 31 – F

Patent

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B31F 1/12 (2006.01)

Patent

CA 2644640

An improved method of controlling build-up of adhesive coating on a Yankee drying cylinder preferably includes intermittently: (a) increasing the add-on rate of resinous adhesive to the drying cylinder substantially above the steady-state add-on rate; (b) segregating the absorbent sheet product produced while the add-on rate of resinous adhesive to the drying cylinder is elevated above the steady-state add-on rate from absorbent sheet product accumulated during steady-state operation; and (c) while the add-on rate of resinous adhesive to the drying cylinder is increased above the steady-state add-on rate, stripping at least a portion of the adhesive coating from the drying cylinder with a cleaning doctor.

L'invention concerne un procédé amélioré de régulation de l'accumulation de revêtement adhésif sur un cylindre de sécheur frictionneur, ledit procédé comprenant de préférence par intermittence : (a) l'augmentation du taux d'apport d'adhésif résineux au cylindre sécheur sensiblement au-dessus du taux d'apport en régime continu ; (b) la séparation du produit en feuilles absorbantes produit tandis que le taux d'apport d'adhésif résineux au cylindre sécheur est élevé au-dessus du taux d'apport en régime continu et du produit en feuilles absorbantes accumulé pendant le fonctionnement en régime continu ; et (c) tandis que le taux d'apport d'adhésif résineux au cylindre sécheur est élevé au-dessus du taux d'apport en régime continu, détacher au moins une partie du revêtement adhésif du cylindre sécheur à l'aide d'une racle de nettoyage.

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