B - Operations – Transporting – 41 – N
Patent
B - Operations, Transporting
41
N
B41N 3/06 (2006.01) B41F 35/00 (2006.01)
Patent
CA 2193303
A process for treating a wiping solution, comprising at least 90% of water and additives, introduced in one or several wiping tanks and used by the inks of one or more intaglio printing machines, wherein the process comprises the following steps: (a) ultrafiltration of the used solution coming from the one of several wiping tanks, producing a clear solution and a concentrated residual solution; (b) recycling of the clear solution in the circuit of fresh wiping solutions; (c) flocculation of the concentrated residual solution derived from the ultrafiltration; (d) filtration of the flocculated solution giving solid waste and a filtered solution, (e) neutralisation of the filtered solution; (f) evaporation of the neutralised solution producing a concentrated salty solution and distilled water; (g) use of the distilled water for producing fresh wiping solution and (h) filtration of the salty solution producing solid salts and a residual liquid.
de La Rue Giori S.a.
Fetherstonhaugh & Co.
Kba-Notasys Sa
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