Alcohol-free offset-printing fountain solution

Abstract

The invention discloses an alcohol-free offset-printing fountain solution. The alcohol-free offset-printing fountain solution comprises an acidifying or alkalizing agent, carboxymethylcellulose sodium, a surfactant, an eco-friendly solvent, an anti-corrosive agent and ion exchange water. The alcohol-free offset-printing fountain solution has following beneficial effects: by redesigning the formula of the fountain solution, an alcohol-free offset-printing processing solution comes into being in order to reduce waste and improve the environment; no harm is caused to a worker's body; and potential safety hazards are eliminated.

Description

technical field [0001] The invention belongs to the technical field of offset printing, and in particular relates to an alcohol-free offset printing fountain solution. 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. [0003] Generally, 10%-12% alcohol or isopropanol is added to the offset printing working solution in the prior art to reduce the surface tension of the working solution so that the working solution can be evenly distributed on the surface of the printing plate. [0004] But, there is following defective in this technology: 1. No matter alcohol or isopropanol are low flash point high volatility, flammable and explosive liquid, there is potential safety hazard; 2. When printing, alcohol or isopropanol will...

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Problems solved by technology

[0004] But, there is following defective in this technology: 1. No matter alcohol or isopropanol are low flash point high volatility, flammable and explosive liquid, there is potential safety hazard; 2. When printing, alcohol or isopropanol will Absorb the heat energy generated by the high-speed operation of the printing unit and quickly volatilize it. Therefore, it is necessary to continuously replenish the water tank to ensure the concentration of the fountain solution, and the consumption is very large; It can cause headaches, nausea, and even loss of consciousness, which can easily hinder the personal safety of workers; 4. When the concentration of alcohol vapor in the air reaches more than 2%, there is a danger of explosion; 5. Alcohol or isopropanol will dilute the ink and affect the utilization rate of the ink.

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