Method for cleaning articles in a dish washing machine

Details Method for cleaning articles in a dish washing machine Method for cleaning articles in a dish washing machine

C - Chemistry, Metallurgy

11

D

C11D 3/02 (2006.01) A47L 15/14 (2006.01) C11D 3/20 (2006.01) C11D 7/06 (2006.01) C11D 7/08 (2006.01)

Patent

CA 2521753

The invention concerns a method for cleaning articles in a dish washing machine comprising an alkaline and an acidic cleaning step and at least one additional alkaline cleaning step, characterized in that a) in a hood dish washing machine there is a first alkaline cleaning step with an aqueous cleaning solution having a pH-value higher than 9, b) the first alkaline cleaning step is followed by a first acidic cleaning step with an aqueous cleaning solution having a pH-value lower than 5. c) the first acidic cleaning step is followed by at least a second alkaline cleaning step with an aqueous cleaning solution having a pH-value higher than 9.

L'invention concerne un procédé de nettoyage d'objets dans un lave-vaisselle comprenant une étape de nettoyage alcalin et acide et au moins une étape supplémentaire de nettoyage alcalin, le procédé étant caractérisé en ce que : a) dans un lave-vaisselle à couvercle, une première étape de nettoyage alcalin est effectuée au moyen d'une solution de nettoyage aqueuse dont la valeur du pH est supérieure à 9; b) cette première étape de nettoyage alcalin est suivie d'une première étape de nettoyage acide au moyen d'une solution de nettoyage aqueuse dont la valeur du pH est inférieure à 5 ; et c) la première étape de nettoyage acide est suivie d'au moins une seconde étape de nettoyage alcalin au moyen d'une solution de nettoyage aqueuse dont la valeur du pH est supérieure à 9.

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