Preparation method of environment-friendly benzene-free ketone-free white printing ink

Abstract

The invention provides a preparation method of an environment-friendly benzene-free ketone-free white printing ink. The preparation method comprises the following steps: equipment is selected; the formulation of the white printing ink comprises the following components by weight percent: 35% of titanium dioxide, 30% of a resin, 1.5% of a wetter, 2% of a dispersing agent, 1.5% of an anti-settling agent and 30% of a mixed solvent; the components of the formulation are placed in a printing ink tank; operation is conducted to prepare the white printing ink; after the fineness and viscosity are qualified, the densities of toluene and butanone in the white printing ink are tested by a gas chromatograph so as to ensure the contents of the toluene and butanone in the white printing ink are lower than 0.03%; the white printing ink is filtered, weighed and packaged. The white printing ink prepared through the preparation method has the benefits as follows: the contents of the toluene and butanone in the white printing ink are lower than 0.03%, so that health of operating personnel is ensured; the white printing ink is stable in quality and good in performance; as the prepared white printing ink is free from the phenomenon of thickening or insoluble precipitate, the guarantee period can be above 1 year; phenomena such as fuzzy printing and cut lines in the printing process of the white printing ink are avoided; the production efficiency is high; the printing stability is ensured for users.

Description

technical field [0001] The invention relates to a preparation method of an environment-friendly benzene-free and ketone-free white ink. Background technique [0002] Environmentally friendly benzene-free and ketone-free ink is a kind of "green" ink that has emerged in recent years. Compared with traditional inks, this ink does not contain strong solvents such as toluene and methyl ethyl ketone that are harmful to the human body. Instead, alcohols and Weak solvents such as esters, these solvents have the characteristics of low residue and low pollution, especially suitable for industries such as food packaging, medicine, cigarettes, decoration and children's toys. [0003] Since this ink does not contain strong solvents such as toluene and methyl ethyl ketone, if the preparation method is improper, such as the order of feeding, the mixing of solvents, and the way of adding, etc., the quality of the ink after processing will be unstable and precipitation will easily occur. , ...

AI Technical Summary

Problems solved by technology

[0003] Since this ink does not contain strong solvents such as toluene and methyl ethyl ketone, if the preparation method is improper, such as the order of feeding, the mixing of solvents, and the way of adding, etc., the quality of the ink after processing will be unstable and precipitation will easily occur. , thickening and other problems, and in the subsequent printing process, it will cause quality problems such as fog plate and knife line, or the phenomenon of floating color and flowering in the spot color made from it.