Scrape-removable water-based ink for flexographic printing and preparation method thereof

Abstract

The invention provides scrape-removable water-based ink for flexographic printing, which comprises raw materials of color paste, base ink and an admixture, wherein the base ink comprises water-based silver ink, shading black, peeling oil and protective water-based oil. The invention further provides a preparation method of the scrape-removable water-based ink for flexographic printing. The preparation method comprises the steps as follows: step 1, the water-based silver ink is prepared for reserve; step 2, the shading block is prepared for reserve; step 3, the peeling oil is prepared for reserve; step 4, the protective water-based oil is prepared for reserve; step 5, the base ink is prepared for reserve; step 6, the color paste is prepared in an agitator for reserve; step 7, the color paste prepared in the step 6 is added to water and dispersed and ground in a dispersion machine for reserve; and step 8, the color paste, the base ink and the admixture are taken by weight percentage andevenly agitated and mixed, and then the product is prepared. The invention provides the one-step water-based ink and the manufacturing method thereof, which have the advantages that the production process flow of special water-based ink is changed, the manufacturing time is shortened, production procedures are reduced and complete grinding is not needed.

Description

technical field [0001] The invention relates to a water-based ink, in particular to a scrapable water-based ink used in green and environment-friendly printing such as tax control invoices, lottery tickets and PE recharge cards and a preparation method thereof. Background technique [0002] There are many shortcomings in the existing Guaguale flexographic ink technology: Guagua silver ink is easy to thicken when stored, ink property deteriorates, and printability is lost; the black density is not enough to cover, the covering effect is poor, and the bottom is exposed; either it cannot be printed solidly, or after printing , cannot be peeled off; scratch silver ink layer is too brittle, easy to scratch on the desktop, revealing secret password, completely lost the effect of covering and keeping secrets. If the printed matter is stored for more than 5 months, especially during the high temperature season in the northern summer or the rainy season in the southern part, it will ...

AI Technical Summary

Problems solved by technology

[0002] There are many shortcomings in the existing Guaguale flexographic ink technology: Guagua silver ink is easy to thicken when stored, ink property deteriorates, and printability is lost; the black density is not enough to cover, the covering effect is poor, and the bottom is exposed; either it cannot be printed solidly, or after printing , cannot be peeled off; scratch silver ink layer is too brittle, easy to scratch on the desktop, revealing secret password, completely lost the effect of covering and keeping secret

If the printed matter is stored for more than 5 months, especially during the high temperature season in the northern summer or the rainy season in the southern part, it will not be easy to scratch the scratched printed matter stored for a long time, or the covering ink layer in the code area cannot be scraped off, and even the invoice cannot be displayed even after the invoice is scratched. Award or Password Information