Machine dishwashing process

Details Machine dishwashing process Machine dishwashing process

A - Human Necessities

47

L

A47L 15/24 (2006.01) A47L 15/44 (2006.01) C11D 3/37 (2006.01) C11D 7/06 (2006.01) C11D 7/08 (2006.01) C11D 7/16 (2006.01) C11D 7/26 (2006.01) C11D 7/32 (2006.01) C11D 7/36 (2006.01)

Patent

CA 2176701

A machine dishwashing process for cleaning soiled crockery is provided. The process comprises (1) optionally prewashing the crockery in a prewash zone; (2) washing the crockery in a wash zone with washing liquor; (3) spraying the crockery from the wash zone with a spraying solution; and (4) rinsing the crockery in a clear washing zone. The washing liquor includes used spraying solution from step (3). The spraying solution has an alkali content of at least 0.8 % by weight. An additive which is substantially free of alkali is supplied to the washing liquor to give a concentration in the washing liquor in the presence of the used spraying solution of at least 0.004 % by weight of complexing agent(s) and/or sequestering agent(s).

L'invention concerne un procédé de lavage dans un lave-vaisselle, servant à laver de la vaisselle de table salie, et consistant : (1) à prélaver facultativement cette vaisselle dans une zone de prélavage; (2) à la laver dans une zone de lavage à l'aide d'une liqueur de lavage; (3) à l'asperger dans la zone de lavage à l'aide d'une solution d'aspersion; et (4) à la rincer dans une zone de rinçage à l'eau claire. La liqueur de lavage comprend la solution d'aspersion utilisée dans l'étape (3), cette solution ayant une teneur alcaline d'au moins 0,8% en poids. On ajoute un additif essentiellement non alcalin à cette liqueur de lavage afin de donner à celle-ci, en présence de la solution d'aspersion utilisée, une concentration d'au moins 0,004% en poids d'agent(s) complexant(s) et/ou séquestrant(s).

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