Global Patent Index - EP 0826502 B1

EP 0826502 B1 2000-05-17 - Method and means for realising a fresh cleaning solution and for treating the used solution

Title (en)

Method and means for realising a fresh cleaning solution and for treating the used solution

Title (de)

Vorrichtung und Verfahren zum Herstellen einer Reinigungslösung und zum Behandeln der verwendeten Reinigungslösung

Title (fr)

Procédé de production de solution d'essuyage fraîche et de traitement de solution d'essuyage usée et dispositif de mise en oeuvre

Publication

EP 0826502 B1 (FR)

Application

EP 97810589 A

Priority

CH 215296 A

Abstract (en)

[origin: EP0826502A1] The method for making a fresh cleaning fluid for a copper-plate printing machine. It involves using softened water, sulphonated ricin oil and caustic soda in proportions of 98.5 per cent, 1 per cent and 0.5 per cent respectively. After the fluid has been used it is subjected to ultrafiltration, producing a clear solution and a concentrated solution. The clear solution is recycled and the concentrated solution is flocculated to give solid residues and a filtered solution, the latter being neutralised, evaporated and distilled. The distilled water is used to make fresh solution, and the contaminated concentrated solution is used to make dry solid salts and a filtrate used for flocculation. The flocculant is made with the addition of calcium chloride and ferrous chloride, and the neutralisation is performed by hydrochloric acid with or without sulphuric acid.

IPC 1-7 (main, further and additional classification)

B41F 35/00

IPC 8 full level (invention and additional information)

C02F 9/00 (2006.01); B41F 35/00 (2006.01); C02F 1/52 (2006.01)

CPC (invention and additional information)

B41F 35/00 (2013.01); B41P 2235/32 (2013.01)

Designated contracting state (EPC)

AT CH DE FR GB IT LI SE

EPO simple patent family

EP 0826502 A1 19980304; EP 0826502 B1 20000517; AT 192972 T 20000615; AU 1239597 A 19980305; AU 722323 B2 20000727; CA 2193303 A1 19980303; CA 2193303 C 20050412; CN 1116398 C 20030730; CN 1175625 A 19980311; DE 69702032 D1 20000621; DE 69702032 T2 20010118; JP 4035593 B2 20080123; JP H1085789 A 19980407; KR 100433740 B1 20040916; US 5855787 A 19990105

INPADOC legal status


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- Owner name: BUGNION S.P.A.

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