Method for printing double smooth surfaces at one time and matting agent for printing ink

Abstract

The invention discloses a method for printing double smooth surfaces at one time and a matting agent for printing ink. The matting agent is prepared from the following raw materials in part by weight: 90 to 95 parts of polyethylene paraffin scattered in a fluffy state, 2 to 4 parts of hydrogenated castor oil and 0.4 to 1 part of polyacrylamide. The preparation method comprises the following step of uniformly mixing the three substances in a high speed mixer. The method for printing double smooth surfaces at one time comprises the following steps: uniformly mixing gravure ink and the matting agent in a ratio of 1:(2-4); printing matted patterns on parts of a base material requiring a matting effect through gravure equipment by using the mixed matting gravure ink; and printing bright patterns on parts of the base material requiring a bright effect by using gravure ink without the matting agent, or reversing the sequence to achieve the same effect.

Description

technical field [0001] The invention relates to the field of packaging printing, in particular to a printing method with double smooth surfaces and a matting powder for ink. Background technique [0002] Matte patterns and glossy patterns are generally printed on the surface of packaging boxes for high-end wine, cigarettes and other items. The matte pattern is not dazzling and dazzling, stable and elegant, and has a hazy beauty, while the glossy pattern is smooth and bright, giving people a gorgeous and bright feeling. When the two patterns are arranged together, they will form a strong gloss contrast and increase the layering of the pattern. At present, to obtain this double printing effect, the printing process is as follows: first, a layer of glossy ink is printed on the surface of the printed matter, and then a layer of partial matte ink is printed on the surface of the glossy ink, and the parts with matte ink have a matte effect. The parts that are not printed with ma...

AI Technical Summary

Problems solved by technology

It can be seen from the above printing process that the existing technology needs to go through two printing processes, the production cycle is long and the efficiency is low

To obtain this dual printing effect, the matting powder used is generally a mixture of industrial paraffin and ultrafine silica, and the ratio of ink to matting powder should not exceed 10:1. Too much matting powder will cause precipitation problems and make the surface of the printed matter It becomes rough, too little matting powder, the contrast between the two is not strong, and the appearance of the packaged product is not prominent enough