Preparation method of gravure water-based ink

Abstract

The invention relates to a preparation method of gravure water-based ink. Most of the existing ink is not environment-friendly enough. The preparation method comprises the following steps: firstly, mixing and evenly stirring acrylic acid, styrene, vinyl acetate, water, an emulsifier and an initiator to obtain acrylic acid-styrene-vinyl acetate copolymer emulsion interpenetrating network-type water-soluble resin; then placing the acrylic acid-styrene-vinyl acetate copolymer emulsion interpenetrating network-type water-soluble resin and pigment, water, isopropyl alcohol, ethanol, a defoamer, a wetting agent, a leveling agent, a dispersant, a coupling agent and an antibacterial agent in an ink preparing barrel, and stirring to form a pasty ink material; and placing the pasty ink material in a three-roller ink grinding mill for ink grinding to lead pigment particles to be smashed completely and uniformly dispersed into a liquid binder, thus preparing the gravure water-based ink. The method is simple in technology, and the prepared ink has good printability, moisture friction resistance, high gloss and good adhesion, therefore, the gravure water-based ink can be used for different types of paper.

Description

technical field [0001] The invention belongs to the technical field of printing inks, and relates to a method for preparing gravure water-based ink, in particular to a method for preparing gravure water-based ink with an interpenetrating network water-soluble resin. Background technique [0002] Paper and plastic film are currently one of the main packaging materials. In traditional printing, organic solvent-based inks are mostly used for printing, especially in food packaging printing. Due to the use of organic solvent inks, hydrocarbons and residual solvents will be emitted, polluting the air and packaging items, and endangering health. With the continuous improvement of people's awareness of environmental protection, green environmental protection has become the development theme of the 21st century. In recent years, many countries have increased requirements and restrictions on hygiene and environmental protection in terms of packaging and printing. Therefore, solvent-b...

AI Technical Summary

Problems solved by technology

The second-generation water-based ink uses solution-type styrene-acrylic acid copolymer resin as the linking material. The water-based ink developed at this time has significantly improved storage stability and water resistance. For example, Chen Lan and others use ketone aldehyde prepolymer Copolymerized with acrylates, the prepared water-based resin has the advantages of good gloss, good adhesion, excellent film-forming performance, strong water resistance and weather resistance after film formation, and water-based acrylate polymers. Excellent weather resistance, transparency and film-forming properties and better water solubility, but there is still a gap with solvent-based inks in terms of gloss and printability

In short, as far as the current water-based ink is concerned, whether it is high-grade water-based ink or low-grade water-based ink, there are unresolved problems such as unstable pH of the system, poor resolubility, and limited application in alkaline conditions, freezing environments, and high magnetic environments. question