Varnishing layer masking liquid for high-gloss water-resistant photographic paper and preparation method of varnishing layer masking liquid

Abstract

The invention discloses varnishing layer masking liquid for high-gloss water-resistant photographic paper. The varnishing layer masking liquid comprises, by weight, 28-40 parts of alumina sol, 50-70 parts of water, 0.1-1 part of alcohol, 0.05-0.2 part of defoaming agent, 0.05-0.5 part of brightener, 0.05-0.5 part of ammonium hydroxide, 0.1-1 part of lubricant and 1-5 parts of polymer emulsion. A preparation method of the varnishing layer masking liquid includes adding the alumina sol into the water, adding the alcohol, the defoaming agent and the brighter sequentially with slow stirring, highly dispersing for 30-90 minutes, slowly dropwise adding the ammonium hydroxide with high-speed stirring, stirring for 20-40 minutes, adding the lubricant and the polymer emulsion with slow stirring, stirring for 30-60 minutes at a high speed, and filtering so as to obtain a finished product, wherein the alumina sol accounts for 20% of the total water. The varnishing layer masking liquid for the high-gloss water-resistant photographic paper is capable of improving surface gloss and scratch resistance of the high-gloss water-resistant photographic paper by adopting the alumina sol as a main coating material.

Description

technical field [0001] The technical field of the present invention is the technical field of new materials, and the application field is the field of image output, and in particular relates to a coating solution for a coating layer of high-gloss water-resistant photographic paper and a preparation method thereof. Background technique [0002] In September 2012, my country Lucky Film Group, a giant film manufacturer in China, closed the last color film production line in Nanjing, marking that my country's digital inkjet printing technology has basically replaced the traditional silver salt output technology in the image output industry. [0003] Inkjet printing photo paper is the printing medium material in digital inkjet printing technology, which is made by coating the coating liquid on the surface of the substrate. At present, the types of photo paper on the market mainly include coated paper photo paper and cast-coated photo paper. Among them, the coated paper photo pape...

AI Technical Summary

Problems solved by technology

[0004] Coated paper photo paper has the advantages of good water resistance, high flatness, complete hydrophobicity on the back of the paper, vivid and bright output colors, and is suitable for long-term storage. However, its surface gloss is relatively low, the printing drying speed is slow, and the surface is prone to scratches And leave fingerprints, which will affect the printing color display and preservation

[0005] Cast-coated photo paper has high gloss, fast printing and drying speed, high surface hardness, and vivid and bright colors. However, because it uses paper as the base material, it has relatively poor water resistance and is easy to curl, which affects long-term storage applications.