Method for applying products without rinsing on moving metal...

C - Chemistry – Metallurgy – 23 – C

Patent

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Details

C23C 22/73 (2006.01) B05D 1/28 (2006.01) B05C 1/08 (2006.01)

Patent

CA 2378935

The invention concerns a method for chemical treatment of metal strips which consists in applying unilaterally or bilaterally a treating liquid on the surface of metal strips using a roller coater, and in drying said liquid without intermediate rinsing. Said method is characterised in that it consists in using a lap roll as roller coater. The treating liquid is preferably a phosphating solution, a chromating solution, an acid or alkaline passivating solution, a treating solution based on complex fluorides or a solution or dispersion of an organic film-forming agent.

L'invention concerne un procédé de traitement chimique de bandes métalliques consistant à appliquer un liquide de traitement unilatéralement ou bilatéralement sur la surface des bandes métalliques au moyen d'un rouleau applicateur, et à sécher ce liquide sans rinçage intermédiaire. Ce procédé est caractérisé par le fait que l'on emploie un rouleau de nappe en tant que rouleau applicateur. Le liquide de traitement est de préférence une solution de phosphatage, une solution de chromatage, une solution de passivation acide ou alcaline, une solution de traitement sur la base de fluorures complexes, ou une solution ou dispersion d'un agent filmogène organique.

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