Method and apparatus of cleaning paper machine press fabrics...

Details Method and apparatus of cleaning paper machine press fabrics... Method and apparatus of cleaning paper machine press fabrics...

D - Textiles, Paper

21

F

D21F 1/32 (2006.01) B08B 1/02 (2006.01) B08B 3/02 (2006.01) D21F 1/34 (2006.01)

Patent

CA 2666324

A method of cleaning papermaking felt (10) by applying a low concentration of a cleaning solution through the oscillating needle nozzles (14). The detergent is applied intermittently while paper is being manufactured. Each cleaning period lasts for at least the length of time required for the nozzles to cover the entire surface of the felt (10), and preferably twice that period of time. The application of cleaning solution is then discontinued for a period of time, generally equal to the time the cleaning detergent is applied to the felt (10). This cycle is repeated continuously as the paper is being manufactured. The chemistry of the cleaning solution can be changed, for example, from acidic to basic, alternately, to enhance cleaning performance.

L'invention concerne un procédé de nettoyage d'un feutre (10) pour la fabrication du papier par application d'une faible concentration d'une solution de nettoyage à travers les buses (14) à aiguilles oscillantes. Le détergent est appliqué par intermittence alors que le papier est en cours de fabrication. Chaque période de nettoyage dure pendant au moins le laps de temps requis pour que les buses recouvrent la surface entière du feutre (10), et, de préférence, deux fois cette période de temps. L'application de la solution de nettoyage est ensuite stoppée pendant une période de temps, en général égale au temps pendant lequel le détergent de nettoyage est appliqué au feutre (10). Ce cycle est répété en continu à mesure que le papier est fabriqué. La chimie de la solution de nettoyage peut être changée, par exemple, d'acide à basique, de façon alternée, pour améliorer la performance de nettoyage.

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