Active digital printing paste composition and preparation method thereof

Abstract

The invention discloses an active digital printing paste composition and a preparation method thereof. The active digital printing paste comprises the following components: 1-25% by weight of guar hydroxypropyltrimethylammonium chloride, 5-20% by weight of hydroxypropyl guar, 1-15% by weight of hydroxyethyl cellulose, 5-20% by weight of hydroxypropyl methylcellulose, 1-8% by weight of monoglyceride succinate, 1-8% by weight of hydroxysultaine, 0.1-1.5% by weight of alkali metal carbonate and 30-70% by weight of anhydrous alkali metal strong acid salt, based on the total weight of active digital printing paste. The active digital printing paste composition has the characteristics of high color yield, soft hand feeling, uniform printing, high definition and the like, and has excellent comprehensive performance of active digital printing.

Description

technical field [0001] The invention relates to an active digital printing paste composition and a preparation method thereof. Background technique [0002] Digital printing technology is a high-tech product integrating machinery, computer and electronic information technology. With the continuous improvement of the printing speed of digital printing machines, the popularity of digital printing technology is becoming more and more extensive, which greatly meets people's individual needs. [0003] Cotton fabrics need to be pretreated before reactive digital printing, and then reactive digital printing (including digital printing, drying, steaming, and washing steps). The pretreatment is to pad the reactive digital printing paste onto the fabric, so the reactive digital printing paste is related to the key indicators of the final reactive digital printing product such as color, clarity, and feel. [0004] The traditional reactive printing technology is relatively mature, and...

AI Technical Summary

Problems solved by technology

Generally, traditional high-viscosity or low-viscosity reactive printing pastes are used as reactive digital printing pastes, and the effect is not ideal

[0005] Publication number CN 108193526A discloses a kind of active digital printing paste and its preparation method, which is composed of low-viscosity sodium alginate, modified sodium alginate, complexing agent, preservative, and anti-swimming agent. The so-called modified sodium alginate is Hydroxypropyl modified sodium alginate, but the preparation process of the modified sodium alginate described in it is complicated, and the advantage of printing performance is not obvious

Publication No. CN108049209A discloses an active digital printing paste and its preparation method and application, wherein the paste is composed of bio-modified starch and potato starch, but the description of the bio-modified structure is not clear, and it is not possible to determine what structure the bio-modified starch and potato starch, the invention is not convincing enough

[0006] Based on various public information, the current development of reactive digital printing pastes is basically based on the thinking of traditional reactive printing. Many reactive digital printing pastes are anionic. When pretreating cotton fabrics, anionic pastes are combined with fibers in advance. Afterwards, the negative charge on the surface of the fiber is enhanced, and the repulsion to the reactive ink (anionic dye) is enhanced, which reduces the coloring rate of the reactive dye in the ink during subsequent digital printing, resulting in a low depth of reactive digital printing

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