Quick-drying brilliant offset printing ink

Abstract

The invention discloses a fast-drying high-gloss offset printing ink. The weight proportion of the oil ink is: 50 to 70 portions of binder material, 13 to 20 portions of pigment, 5 to 15 portions of ink oil, and 5 to 15 portions of auxiliary agent, wherein, the binder material is rosin modified phenolic resin which is prepared through the following steps that: phenolic aldehyde condensation is performed; the condensed phenolic aldehyde undergoes addition operation; a semi-finished product is produced through an esterification reaction; whether the semi-finished product is qualified is checked; and qualified semi-finished product undergoes oil refining to produce a finished product. The ink has high density, less ink flying, short paper drying time and good wear-resistant effect, so the oil ink has good transfer performance, can achieve the effect of quick-drying high gloss, and be suitable for high-speed printing.

Description

Quick dry glossy offset ink technical field The invention relates to a fast-drying glossy offset printing ink, which is suitable for a single-color machine, two-color or multi-color offset printing machine with single-sheet feeding. Background technique In recent years, the packaging and printing market has developed rapidly, and medium and high-speed printing machines are increasingly recognized by customers. Currently, the printing speeds of mainstream printing machines from companies such as Heidelberg, Roland, Komori, and Mitsubishi are all between 11,000-14,000 sheets / hour. , both long and short versions are available. However, most of the current common offset printing inks can only adapt to 11,000 sheets / hour or less. If such inks are used in high-speed printing machines, the printing quality will decrease due to poor transferability, and even the printing cannot be completed. The binder of existing ink is mainly made of phenolic resin, and its production process ...

AI Technical Summary

Problems solved by technology

The problem is that due to the need to wait for the semi-finished product to cool, the processing time is long, the process is complicated, and the ink produced by using the binder made in this way cannot meet the requirements of high-speed printing.