Printing ink used for thermal transfer printing applicable to cotton and wool textiles

Abstract

The invention discloses printing ink used for thermal transfer printing applicable to cotton and wool textiles. The printing ink used for the thermal transfer printing is prepared from a disperse dye composition, filler, a dispersing agent, a crosslinking agent, a cosolvent and a catalyst, wherein the disperse dye composition comprises disperse dyes, biological enzymes, activated carbon fibers, copolymers of polyepichlorohydrin or epichlorohydrin and ethylene oxide and a linear polymer of polysaccharide and a peptide chain, wherein the two polymers realize the best synergistic effect with disperse dyes under the action of the biological enzymes and activated carbon fibers, adsorption capacity of the disperse dyes is effectively enhanced, maximum stability is achieved under the synergistic effect of other fillers and auxiliaries, color fixing rate during the thermal transfer printing is effectively increased, and high temperature decomposition rate of the printing ink is reduced. When the printing ink used for the thermal transfer printing applicable to the cotton and wool textiles is applied to treatment on the cotton and wool fiber textiles, the color fixing rate is relatively high, transfer efficiency is excellent, thermal decomposition is hardly caused, release of harmful substances is avoided, and low carbon and environmental friendliness are realized.

Description

technical field [0001] The invention relates to printing and dyeing inks, in particular to a thermal transfer printing ink suitable for cotton and wool fabrics. Background technique [0002] Faced with the increasingly fierce competition in the domestic printing and dyeing industry and the increasing environmental protection barriers of foreign developed countries, in order to survive and develop, it is an inevitable choice for Chinese printing and dyeing enterprises to take the road of green printing and dyeing with high added value and high-tech content. China's "Twelfth Five-Year Development Plan for the Textile Industry and Outline for a Strong Country in 2020" pointed out that the textile industry needs to accelerate the upgrading and adjustment of industrial structure and product structure, with special emphasis on clean production and environmental protection technologies for printing and dyeing enterprises. [0003] Transfer printing was invented around the 1950s, th...

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Problems solved by technology

[0003] Transfer printing was invented around the 1950s, that is, the sublimation method. Through heat and pressure, the dye sublimates to promote the peeling of the ink layer from the transfer paper, and transfer the pattern on the transfer paper to the fabric. Transfer printing technology guide is used on polyester and other chemical fiber fabrics, and the selection of dye inks is quite limited. Many dyes are easily decomposed into carcinogenic aromatic amines during heat transfer, which greatly limits the development of heat transfer, especially for cotton wool. The thermal printing of natural fibers such as natural fibers has more limitations, mainly due to the lack of an ink with high color fixation rate, high dye transfer efficiency and not easy to decompose into harmful substances.

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