Environment-friendly alcohol-free fountain solution for offset printing and preparing method thereof

Abstract

The invention discloses an environment-friendly alcohol-free fountain solution for offset printing and a preparing method thereof. The solution is prepared from, by weight, 4-7 parts of lauryl polyoxyethylene, 6-8 parts of coconut diethanolamide, 3-5 parts of petroleum sodium sulfonate, 4-6 parts of potassium pyrophosphate, 10-14 parts of trisodium citrate, 8-10 parts of Arabic gum, 4-5 parts of dodecyl polyglucoside, 2-4 parts of hydroxyethyl ethylenediamine, 7 parts of dimethyl dodecyl amine oxide, 2-3 parts of di-o-tolyl-thiourea, 1-2 parts of sodium carboxymethylcellulose, 0.6-0.8 part of methylisothiazolinone, 4-5 parts of Turkey red oil, 0.8-1.2 parts of ethylene diamine tetraacetic acid tetrasodium, 0.6-0.8 part of tea saponin, 3-5 parts of dipropylene glycol methyl ether, 3-4 parts of dodecyl betaine type phosphate, 2-3 parts of sodium hexametaphosphate, and 120-140 parts of deionized water. According to the fountain solution, alcohol of any kinds is not added, no volatile harmful substance is contained, environment friendliness is realized completely, no harm can be done to the human body, a quite strong microorganism killing effect can be realized, microbial pollution of the fountain solution can be controlled and prevented, metal parts can be prevented from being corroded, and a printing plate and a printing machine are prevented from being damaged by early water.

Description

technical field [0001] The invention relates to a fountain solution, in particular to an environment-friendly alcohol-free fountain solution for offset printing and a preparation method thereof. Background technique [0002] Fountain solution is an indispensable chemical additive in the printing process of color printing machines. It forms a uniform water film on the blank part of the printing plate to resist the infiltration of ink on the graphic and text to the blank part and prevent dirty plates. Fountain solutions contain wetting agents that change the surface tension of the plate surface. [0003] In offset printing, the role of fountain solution is mainly reflected in three aspects: one is to form a water film on the blank part of the printing plate; the other is to supplement the hydrophilic layer damaged during the printing process; the third is to reduce the surface of the printing plate temperature. The role of alcohol in the fountain solution also has three asp...

AI Technical Summary

Problems solved by technology

If there is no concept of environmental protection printing, maybe the alcohol fountain solution will be used for a long time. However, the alcohol component in the currently used fountain solution is mainly isopropanol, which is low boiling point, highly volatile and flammable. Organic solvents are harmful to the human body. In addition, alcohol also affects the gloss of the ink and damages the rubber roller.

What's more, isopropanol emissions can also pollute the environment