Non-alcoholic fountain solution containing composite surfactant and preparation method of non-alcoholic fountain solution

Abstract

The invention discloses a non-alcoholic fountain solution containing a composite surfactant. The non-alcoholic fountain solution comprises the following raw materials in part by weight: 70-85 parts of deionized water, 10-15 parts of kappa-carrageenan, 6-10 parts of amorophophallus konjac, 3-6 parts of tea polyphenol, 2-5 parts of sulfated caster oil, 1-3 parts of sorbitol, 3-6 parts of a pH regulator, 3-5 parts of a composite surfactant, and 1-3 parts of POP glycerin ether. Kappa-carrageenan and amorophophallus konjac are compounded to form a compound, and the compounded as a hydrophilic film former improves the water film persistence, so that the fountain solution has high wettability and permeability when used; kappa-carrageenan-amorophophallus konjac-tea polyphenol microspheres have the characteristics of small mean grain size and slow release of tea polyphenol, and the release of tea polyphenol is slowed during the using process of the fountain solution, so that the oxidation resistance of tea polyphenol is improved greatly, and the using stability of the fountain solution is ensured; and a multielement compounding system of the composite surfactant improves the surface tension reducing efficiency greatly, meets the working solution surface tension requirement of the fountain solution, and is beneficial for enabling the printing process to reach the water-ink balance quickly.

Description

technical field [0001] The invention relates to the technical field of offset printing fountain solution, in particular to an alcohol-free fountain solution containing a composite surfactant and a preparation method thereof. Background technique [0002] Offset printing uses the two natural laws of immiscibility of oil and water and selective adsorption of solids to liquids, and builds the copied graphics and blank parts on the surface of the unified printing plate after technical treatment, so that the blank part has Strong water absorption performance, the graphic part is lipophilic and water repellent. In the printing process, water is supplied to the entire printing plate first, so that the blank part of the layout absorbs water to form a water film, and then ink is supplied to the printing plate. At this time, since a layer of water film already exists in the blank part of the printing plate, the ink cannot be adsorbed on the blank part, and the graphic part absorbs a ...

AI Technical Summary

Problems solved by technology

The gel formed by κ-carrageenan has the advantages of low required concentration and high transparency, but there are problems such as high brittleness, low elasticity, and easy dehydration and shrinkage of the gel. These problems can be solved by synergistic effect with other food gums. question