Machine washing of crockery carrying food residues

摘要

Machine cleaning of crockery, esp. crockery soiled with food residues, involves: (a) an opt. pre-wash, (b) spraying with a highly concd. cleaning soln. contg. 2-6% of a liq. cleaner, free from complex-formers, with alkali content at least 25% and not above 6% of a salt of a modified 1-20C carboxylic acid, where the soln. swells the food residues, (c) washing with a liquor contg. 0.02-0.08% of an alkali-free additive with at least 20% of a complex-former, which rinses off the swollen food residues and (d) rinsing off remaining food residues in a clear washing zone and opt. in a later rinsing zone.