Offset printing ink and preparation method thereof

Abstract

The invention relates to the technical field of printing ink, in particular to offset printing ink and a preparation method thereof. The offset printing ink is formed by preparing printing ink base ink and components such as cerate dry vegetable oil under specific process conditions, wherein the printing ink base ink is prepared from components such as self-made quick-drying varnish as a printing ink connection substance, half-dry vegetable oil and dry vegetable oil. Compared with the prior art, the offset printing ink prepared by adopting a preparation process disclosed by the invention has significantly improved comprehensive performance, has the advantages of good wear-resisting property, quick drying speed, strong adhesion, and good in adaptation to various types of paper, and the problems of dirt attachment, slow drying, fading and the like of a printed product can be effectively avoided.

Description

technical field [0001] The invention relates to the technical field of inks, in particular to an offset printing ink and a preparation method thereof. Background technique [0002] Short-run printing generally refers to the printing volume of less than 1000 copies per sheet. It is a brand-new printing method that does not require traditional printing plate making, and directly converts pictures and texts into digital information, which is processed by a computer and then output by laser or inkjet. The difference from traditional printing is that short-run printing can be printed one by one, or can be modified while printing, and continuously output countless pictures that are similar to each other. : Ordinary paper, photo paper, film, light box cloth, gold foil and silver foil, art cloth, etc.) have greatly improved the commercial application range of digital imaging. [0003] In recent years, with the rapid development of the market economy, people's demand for short-run ...

AI Technical Summary

Problems solved by technology

However, the offset printing inks of the prior art have the following defects in the formulation and production process: (1) The compatibility and fluidity between the varnish used in the formulation, the wax powder and other materials are not good, which on the one hand causes The prepared offset printing ink has poor adsorption to paper, slow drying speed, and poor adaptability to paper; The degree of dispersion in the base ink is not good, which seriously affects the wear resistance of the prepared offset printing ink; (2) the production process of the prior art does not take into account the influence of various process conditions on the dispersion performance of the wax powder, resulting in The poor abrasion resistance of offset printing ink caused by the poor dispersibility of the powder; (3) When preparing the wax paste, it needs to be ground by a three-roll machine after stirring. The production process is actually divided into two processes: One is the production process of wax paste, and the other is the production process of ink, so the whole process is complicated and the equipment consumes a lot of energy

[0005] Therefore, there is an urgent need to improve the formulation and production process of offset printing inks in the prior art to comprehensively improve the ink's wear resistance, drying performance, adhesion and adaptability to paper patterns, so as to avoid sticking, slow drying and fading of printed matter And other issues