A kind of decorative paper and preparation method thereof

Abstract

The invention relates to decorating paper, which is obtained by printing water-based ink on base paper. The water-based ink is prepared from the following components in parts by mass: 40 to 50 parts of modified polyamide resin, 40 to 50 parts of color paste, 0.5 to 1 part of triethylamine, 3 to 5 parts of water, 0.5 to 2.0 parts of silicon dioxide aerogel and 0.7 to 2.3 parts of an adjuvant. The modified polyamide resin is prepared by mixing a reactant monomer comprising alcohol-soluble polyamide resin, a methyl methacrylate monomer, a maleic acid monomer and a vinyl organic boric acid monomercontaining carbon-carbon double bonds and an initiator in a nitrogen atmosphere and performing graft copolymerization reaction, the weight ratio of the alcohol-soluble polyamide resin, the methyl methacrylate monomer, the maleic acid monomer and the vinyl organic boric acid monomer containing the carbon-carbon double bonds is (28-35):(7-9):(4-6):(4-5), and the weight of the initiator is 0.2 to 0.25 percent of the weight of the alcohol-soluble polyamide resin. The invention also provides a preparation method for the decorating paper. According to the decorating paper, occurrence of a 'water wave' phenomenon can be effectively avoided.

Description

technical field [0001] The invention relates to the technical field of printing, more specifically, it relates to a decorative paper and a preparation method thereof. Background technique [0002] Ink is a paste-like colloid formed by uniformly dispersing and mixing colorants, binders, additives and other substances. It is mainly composed of pigments as the dispersed phase and binders as the continuous phase. The pigments give the ink its color, and the binder provides the necessary transfer properties of the ink. The binder is the heart of the ink, which can make the colorant (pigment) grind and disperse evenly on the dispersion equipment; make the pigment adhere firmly to the substrate, and make the ink have the necessary gloss, drying performance and printability. The main properties of the ink, such as fluidity, viscosity, drying performance and printing adaptability, all depend on the binder, so the binder is the key to the quality of the ink. [0003] According to t...

AI Technical Summary

Problems solved by technology

However, the existing patent document with an authorized announcement date of 2010.12.29 and an authorized announcement number of CN101613472B discloses a method for preparing a polyamide resin for water-based ink. The phenomenon of "water marks" will occur. The reason for the phenomenon of "water marks" is: water marks are a kind of imaging. From the perspective of ink, it is its transferability. Water marks are the appearance. The real meaning is that the ink has no transfer

The light printing pressure and direct ink transfer method of the flexographic printing process determine that the ink cannot be sheared and thinned during the ink roller pouring process. If there is obvious shear thinning, it is difficult for the ink to adhere to the screen completely. On the anilox roller, the process of the anilox roller transferring the ink to the printing plate will also further lose part of the ink due to insufficient cohesion of the ink, resulting in the final ink detaching from the printing plate and adhering to the substrate. Adhesion is not enough, resulting in "water streak" phenomenon on decorative paper

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