A kind of uv offset printing metallic ink and preparation method thereof

Abstract

The invention relates to UV (ultraviolet) offset metal ink and a preparation method thereof. The metal ink comprises the following components in parts by weight: 40-70 parts of compound prepolymer, 15-30 parts of monomer, 2-6 parts of photoinitiator, 10-30 parts of pigment and 1-5 parts of additive, wherein the compound prepolymer is prepared by mixing aliphatic modified epoxy acrylic resin with polyurethane acrylic resin. The preparation method comprises the following steps: adding the compound prepolymer, the monomer, the pigment, the photoinitiator and the additive to an agitation barrel together according to the parts by weight and stirring and mixing the components for 1-2 hours under the conditions that the temperature is 25-30 DEG C and the rotate speed is 600-800r / min; then transferring the mixture to a three-roll grinder to be ground 3-5 times, and measuring the fineness of the system and controlling the fineness to be not more than 40mu m, thus preparing the UV offset metal ink. Compared with the prior art, the prepared UV offset metal ink is safe and environment-friendly, has good storage stability and good printing adaptability and can conduce to effectively improving the technical defect that existing UV offset metal ink has poor storage stability.

Description

technical field [0001] The invention belongs to the technical field of ink, and relates to a UV offset metal ink and a preparation method thereof. Background technique [0002] Ultraviolet light curing (i.e. UV curing) refers to the chemical reaction of photosensitive substances in the system under the action of ultraviolet light to produce active fragments, which trigger the polymerization and crosslinking of active monomers or oligomers in the system, so that the system can be coated from a liquid state. The layer instantly becomes a solid coating. [0003] Offset UV is an environmentally friendly ink that does not contain volatile components and will not change the color and printing characteristics. During the printing process, UV ink is easy to maintain the stability of color and viscosity. Once the ink color is adjusted before printing, the adjustment workload on the printing machine is very small, and there is no need to add other additives. The surface of the dried...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a UV offset printing metal ink with stable properties, safety and environmental protection, excellent storage performance and good printing adaptability and a preparation method thereof in order to overcome the defects in the above-mentioned prior art, so as to improve the existing UV offset printing metal ink. The technical defect of poor ink storage stability, which reduces the transportation and storage costs of inks, and reduces the risk of ink deterioration, thereby reducing printing costs