TREATMENT OF TINNED STEEL BEFORE APPLYING A COATING
The invention relates to a method for treating the surface of tinned steel with an aqueous treatment solution containing phosphate or silicate. Said method is characterised in that a surface which is newly produced or cleaned before being treated is brought into contact with an aqueous treatment solution having a pH value between 8 and 13.5 and containing between 0.1 and 15 g/l of phosphate, calculated as phosphor, or between 0.1 and 3 g/l of silicate, calculated as silicon, for between 1 and 30 seconds. The treatment solution is then dried in without rinsing.