Machine dishwashing process
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United States of America Patent
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-
Dec 8, 1998
Grant Date -
N/A
app pub date -
Aug 26, 1996
filing date -
Nov 20, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
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).
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