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Basic knowledge of printing ink

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1. What is ink
a printing material composed of pigments, connecting materials, fillers, additives, etc
2. Ink classification

(1) according to the printing method

① according to the layout, there are: relief, lithography, gravure, photographic gravure, screen printing ink, etc

② according to printing methods, there are inks for offset printing and direct printing

(2) by substrate

by substrate: ink for paper, metal, plastic, cloth, etc

(3) according to the drying form

① according to the drying mechanism, there are: osmotic drying type, oxidative polymerization type, volatile drying type, light hardening type, heat hardening type, cooling curing type and other inks

② according to the drying methods, there are natural drying type, hot air drying type, infrared drying type, ultraviolet drying type, cooling drying type and so on

(4) by ink characteristics

① by color: yellow, red, blue, white, black, gold, silver, gold powder, fluorescent color, pearlescent color, etc

② according to the function, it can be divided into: magnetic ink, anti forgery ink, edible ink, foaming ink, aromatic ink, recording ink, etc

③ according to tolerance, there are inks such as light resistance, heat resistance, solvent resistance, abrasion resistance, alcohol resistance and drug resistance

(5) according to ink composition

① according to raw materials, there are: dry oil type, resin oil type, organic solvent type, water-based type, paraffin type, ethylene glycol type and other inks

② there are colloidal, liquid and powdery inks according to their forms

according to the purpose, there are: news ink, book ink, packaging ink, building material ink, trademark ink, etc.

3 How to use ink

in order to adapt to the printing of high-quality paper at high speed, the penetration drying type or oxidation conjunctiva drying type can no longer meet the requirements, and it is easy to produce poor dryness, poor adhesion, pulverization and dirt. In order to overcome these disadvantages, thermosetting ink is adopted, that is, in printing, the solution in the ink will escape after baking at a high temperature of 200 ~ 250 ℃, so as to fix the ink on the printed matter.

there are two kinds of ink properties: solvent ink and water-based ink. One is insoluble in water and the other is soluble in water
printing methods are divided into: flat ink, gravure ink, relief ink, orifice ink and special ink
ink effect: ordinary ink, fluorescent ink, color changing ink, mirror ink, fragrance ink, scratch card ink, laser ink, magnetic ink and anti-counterfeiting ink
ink drying methods: heat drying ink, UV drying ink, EB drying ink, etc
the components of connecting materials can be divided into oxidized conjunctiva drying resin materials, volatile drying solvent inks, two-component reactive inks and UV curing inks
classification of printing materials: paper ink, plastic ink, iron printing ink, glass ink, ceramic ink, etc

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