Fountain solution and preparation method thereof

Abstract

The invention discloses a fountain solution, which is characterized in that: the fountain solution comprises the following raw materials in percentage by weight: 1 to 15 percent of glycerin, 0.1 to 10 percent of ammonium citrate, 0.1 to 10 percent of malic acid, 0.1 to 5 percent of defoaming agent, 0.1 to 10 percent of wetting agent, 0.1 to 5 percent of bactericide, 1 to 15 percent of L-PCA-Na, 1 to 15 percent of propylene glycol and 1 to 15 percent of sorbierite; and the preparation method comprises the following steps: adding the ammonium citrate, the malic acid, the wetting agent, the L-PCA-Na in a weight percentage ratio, then adding 50 to 80 percent of water, uniformly mixing the materials and the water; and adding the propylene glycol, the sorbierite, the glycerin, the defoaming agent and the bactericide into the obtained mixture and then uniformly stirring the mixture so as to obtain the fountain solution. The fountain solution has the advantages of environmental protection, strong fountain capability, wet non-verbal-visual part, sufficient pH-value buffering, difficult ink emulsification, large electric conductivity, large surface-tension buffering range and easy operating control.

Description

technical field [0001] The invention relates to a dampening solution used in printing industrial alcohol or isopropanol printing machine alcohol dampening, and also used for PS plates and printing dampening plates and a preparation method thereof. Background technique [0002] Fountain solution is mainly used in the printing industry, printing machine PS plate dampening occasions. The defects and deficiencies of the dampening solutions currently on the market are as follows: 1. Not environmentally friendly. Phosphate, nitrate, and formaldehyde are harmful to the environment and soil. Whether it is civil or industrial, it is required to use fountain solutions that do not contain phosphoric acid, nitric acid, phosphate, and nitrate; 2. Insufficient dampening ability, non-graphic parts Easy to dry; 3. Insufficient PH value buffer, easily between 4.5-6.5 or even outside; 4. The ink is easy to emulsify, which has a bad effect on ink drying; 5. The buffer range of conductivity an...

AI Technical Summary

Problems solved by technology

The defects and deficiencies of the dampening solutions currently on the market are as follows: 1. Not environmentally friendly. Phosphate, nitrate, and formaldehyde are harmful to the environment and soil. Whether it is civil or industrial, it is required to use fountain solutions that do not contain phosphoric acid, nitric acid, phosphate, and nitrate; 2. Insufficient dampening ability, non-graphic parts Easy to dry; 3. Insufficient PH value buffer, easily between 4.5-6.5 or even outside; 4. The ink is easy to emulsify, which has a bad effect on ink drying; 5. The buffer range of conductivity and surface tension is too small, increase 1% change Too big, hard to control