Planographic printing ink containing high-concentration kaolin and preparation method thereof

Abstract

The invention relates to the technical field of planographic printing ink and particularly relates to planographic printing ink containing high-concentration kaolin and a preparation method thereof. The planographic printing ink is formed by mixed base ink, a pigment connecting material, an anti-friction auxiliary agent, and ink oil, wherein the content of kaolin in the mixed base ink is 8-20%. Compared with the prior art, the high-concentration kaolin and a coloring pigment are added to be kneaded to prepare the mixed base ink, so that a production process is simplified and the production efficiency is improved; even if the content of kaolin in the ink is increased, the decline of the qualities of the glossiness, the mobility and the like of the ink can be inhibited, so that high-concentration kaolin with the lower price can be adopted to prepare the planographic printing ink with the good dispersing performance, glossiness and mobility; and furthermore, the production cost is reduced and the planographic printing ink containing the high-concentration kaolin has a better market prospect.

Description

technical field [0001] The invention relates to the technical field of lithographic inks, in particular to a lithographic ink with high-concentration kaolin and a preparation method thereof. Background technique [0002] In the prior art, in order to adjust the fluidity and viscosity of the ink and improve the printing adaptability of the ink when producing lithographic inks, it is usually necessary to use inorganic pigments such as calcium carbonate, clay, silica or kaolin. Diluted ink and colored pigment-based ink are prepared in two steps, that is, the inorganic pigment and pigment binder are mixed and ground to prepare diluted ink, and then the filter cake pigment and pigment binder are stirred, ground, dehydrated, etc. Multiple processes are used to prepare the colored pigment-based ink, and finally the dilute ink is further mixed with the colored pigment-based ink and undergoes a series of adjustment procedures to prepare the ink with the required properties. The pric...

AI Technical Summary

Problems solved by technology

[0003] However, kaolin is difficult to disperse finely. During the mixing process of kaolin and pigment binder, due to the influence of temperature and other conditions, the dispersibility of the diluted ink produced is poor. The fineness of the ink is controlled within the qualified range, resulting in low ink production efficiency and high cost; on the other hand, in the existing process, the kaolin dilute ink and the colored pigment base ink are produced separately, and the process is complicated, which affects Ink production efficiency and cost; moreover, if kaolin is directly mixed with filter cake pigments, under the condition of water, when the amount of kaolin added increases, that is to say, as the amount of kaolin ink added increases, ink will occur The decline of ink quality such as glossiness and fluidity seriously affects the performance of the ink. In summary, it is very difficult to use a large amount of kaolin in lithographic inks, which limits the amount of kaolin added, and it is difficult to reduce the cost of the ink.