Silk-screen printing ink

Abstract

The invention discloses silk-screen printing ink. The silk-screen printing ink is prepared from, by weight, 15-25 parts of pigments, 25-40 parts of a binder, 45-70 parts of solvent, 1-3 parts of calcium carbonate, 1-3 parts of a defoaming agent, 1-3 parts of a leveling agent, 2-7 parts of a 5A molecular sieve, 1-3 parts of fumed silica, 2-7 parts of a dispersing agent, 0.5-1.5 parts of an adhesion promoter, 2-5 parts of gummy oil, 1-3 parts of a slipping agent, 1-4 parts of barium sulfate, 1-3 parts of hydrotalcite and 1-3 parts of a light stabilizer. According to the silk-screen printing ink, adhesion of ink can be enhanced, the ink penetration and ink fusion phenomena of the ink are prevented, the chemical stability is high, the storage time is long, the printing property is stable, the uvioresistant capacity and the antioxidant capacity are high, and wear resistance is achieved.

Description

technical field [0001] The invention relates to the technical field of inks, in particular to a screen printing ink. Background technique [0002] In 2010, the production of my country's ink industry reached the highest level in history. According to the statistics of "China's Ink Industry Production and Sales Demand and Investment Forecast Analysis Report", the total annual output of ink in the country totaled 589,900 tons, surpassing Germany and Japan for the first time to rank second in the world. Calculated based on the world's annual ink output of about 4.1 million tons in that year, China's ink production scale accounted for 14% of the world's total. Ink is an important material for printing packaging materials. It expresses patterns and characters on the substrate through printing. The ink includes main components and auxiliary components. They are evenly mixed and rolled repeatedly to form a viscous colloidal fluid. Screen printing ink refers to all the inks used in...

AI Technical Summary

Problems solved by technology

However, the drying speed of some existing silk screen printing inks is too slow, which often causes the phenomenon of smearing on the back and sticking pages during printing.

There are also some screen printing inks with poor adhesion, which are prone to uneven printing and deinking, which seriously affect the printing quality, and the surface tension of the ink is related to the transfer performance of the ink and the stability of printing on the printing surface. When the surface of the ink When the tension is greater than the surface tension of the printing surface, the imprint will shrink, and even small fish-eye holes will appear; if the surface tension of the printing surface is similar to that of the ink, and the surface tension of the screen is greater than that of the printing surface, printing will be How to adjust the surface tension is a problem that needs to be solved when there is a network blocking phenomenon; after the ink is printed on the printed matter, due to the poor wear resistance, the ink will fall off during the transportation and use of the printed matter. If the transfer speed is too fast, the ink layer on the surface of the printed matter will partially fall off due to friction, which will affect the appearance and quality of the printed matter. At the same time, the storage effect of the ink is also a problem worthy of attention.