White ink pretreatment fluid as well as preparation method thereof and direct-injection digital printing process

Abstract

The invention discloses white ink pretreatment fluid as well as a preparation method thereof and a direct-injection digital printing process, which belongs to the technical field of textile digital printing. The pretreatment fluid is prepared from the following components: 1 to 5 parts of cation colloidal silicon dioxide, 3 to 7 parts of adhesive, 2 to 6 parts of drying inhibitor, 3 to 8 parts of multivalence alkaline-earth metal salt, 3 to 8 parts of color bleeding prevention agent, 1 to 5 parts of cation mordant, 0.1 to 0.5 part of sterilizing agent, 0.1 to 0.5 part of wet defoaming agent, and 60 to 80 parts of deionized water. All raw materials are successively fed into a material machine and are respectively and uniformly stirred and filtered to obtain the white ink pretreatment fluid. The pretreatment fluid has good dispersion stability, is uniformly smeared when in use, is high in adhesive force, can prevent the seepage of the white paint direct-injection ink on the surface layer of a dark fabric, can also effectively improve the concealing capacity and adhesive force of the white paint direct-injection ink on the dark fabric, and can greatly enlarge the application range of the white paint direct-injection ink.

Description

technical field [0001] The invention relates to the technical field of textile digital printing, in particular to a white ink pretreatment liquid for white paint direct-injection ink, a preparation method thereof, and a direct-injection digital printing process. Background technique [0002] Inkjet printing is a new technology for textile printing and dyeing that integrates computer, information, new materials, fine chemicals and other multidisciplinary fields. It has the advantages of high printing precision, flexible batches, and no waste of dyes and auxiliaries. However, in the past, textile inkjet printing was mainly aimed at white fabrics. In recent years, with the increase in the printing volume of non-white fabrics, the demand for white paint direct-injection inks has also increased, and it has become one of the important colors in textile inkjet printing. . [0003] White paint direct-jet ink is printed directly on dark fabrics, and the ink will seep into the back o...

AI Technical Summary

Problems solved by technology

At present, the existing dark textile pretreatment liquids on the market are applied to white paint direct-injection inks, and there are the following problems: these pre-treatment liquids have insufficient inhibitory effect on the penetration of white paint direct-injection inks, resulting in the curing of white paint direct-injection inks The final covering power is far from meeting people's consumption needs

In addition, these pretreatment liquids all have the defect of significantly reducing the adhesion of white paint direct-jet inks on dark textiles

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