US-12617964-B2 - Digital printed fabric, manufacturing method for digital printed fabric, and digital printing ink

US12617964B2US 12617964 B2US12617964 B2US 12617964B2US-12617964-B2

Abstract

A digital printed fabric includes a base cloth and a digital printing ink disposed on the base cloth, and a manufacturing method for the digital printing ink includes the following steps. A first thermal process including mixing a dye, a crosslinking agent, and a polyol is performed, such that a polymer dye is formed, in which a reaction temperature of the first thermal process is between 70° C. and 90° C. A second thermal process including mixing the polymer dye and an aqueous bridging agent is performed, such that a first mixture is formed, in which a reaction temperature of the second thermal process is between 90° C. and 120° C. A third thermal process including mixing the first mixture and a chain extender is performed, such that the digital printing ink is formed, in which a reaction temperature of the third thermal process is between 120° C. and 150° C.

Inventors

Sun-Wen JUAN
Chun-Hung Lin
Jung-Yu Tsai
Chia-Yi Lin

Assignees

TAIWAN TEXTILE RESEARCH INSTITUTE

Dates

Publication Date: 20260505
Application Date: 20220516
Priority Date: 20210602

Claims (4)

1 . A digital printed fabric, comprising: a base cloth; and a digital printing ink disposed on the base cloth, wherein a manufacturing method for the digital printing ink comprises: performing a first thermal process comprising a step of mixing a dye, a crosslinking agent, and a polyol, such that a polymer dye is formed, wherein a reaction temperature of the first thermal process is between 70° C. and 90° C.; performing a second thermal process comprising a step of mixing the polymer dye and an aqueous bridging agent, such that a first mixture is formed, wherein a reaction temperature of the second thermal process is between 90° C. and 120° C., and the aqueous bridging agent comprises a structural unit represented by formula (1), wherein formula (1) is wherein any two or more of the R 1 , R 2 , and R 3 comprise a structural unit represented by formula (2), wherein formula (2) is and when any two of the R 1 , R 2 , and R 3 comprise a structural unit represented by formula ( 2 ), the other of the R 1 , R 2 , and R 3 comprises a hydrophilic group; and performing a third thermal process comprising a step of mixing the first mixture and a chain extender, such that the digital printing ink is formed, wherein a reaction temperature of the third thermal process is between 120° C. and 150° C.
2 . The digital printed fabric of claim 1 , wherein the chain extender comprises a first reagent and a second reagent, the first reagent comprises a polyamine, and a molecular structure of the second reagent is the same as a molecular structure of the aqueous bridging agent.
3 . The digital printed fabric of claim 1 , wherein the base cloth has a plurality of yarns interwoven with each other, and the digital printing ink wraps each of the yarns.
4 . The digital printed fabric of claim 1 , wherein the base cloth has at least two layers, and the digital printing ink is disposed between the two layers of the base cloth.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application claims priority to Taiwan Application Serial Number 110120079, filed Jun. 2, 2021, which is herein incorporated by reference. BACKGROUND Field of Invention The present disclosure relates to a digital printing ink, a digital printed fabric, and a manufacturing method for a digital printed fabric, and particularly relates to a digital printing ink for a digital printing process on fabrics, a digital printed fabric including a digital printing ink, and a manufacturing method for the digital printed fabric. Description of Related Art In the mass production of fabrics, cloth used as the raw material of fabrics will undergo a dyeing process. Generally, the dyeing process includes steps of placing the cloth in a dyeing machine and soaking the cloth in a dyeing solution or water, such that the cloth can be dyed and washed in the dyeing machine. However, the above-mentioned dyeing process is likely to cause excessive consumption of the dyeing solution, water resources, and energy, and before the dyeing process is performed, it is often necessary to perform a plenty of pre-treatment steps on the cloth, which is not conducive to saving time and costs. Therefore, how to efficiently dye the cloth while taking the color fastness of the cloth after dyeing into account is still an important issue for the textile industry. SUMMARY According to some embodiments of the present disclosure, a digital printed fabric includes a base cloth and a digital printing ink. The digital printing ink is disposed on the base cloth, and a manufacturing method for the digital printing ink includes the following steps. A first thermal process including a step of mixing a dye, a crosslinking agent, and a polyol is performed, such that a polymer dye is formed, in which a reaction temperature of the first thermal process is between 70° C. and 90° C. A second thermal process including a step of mixing the polymer dye and an aqueous bridging agent is performed, such that a first mixture is formed, in which a reaction temperature of the second thermal process is between 90° C. and 120° C. A third thermal process including a step of mixing the first mixture and a chain extender is performed, such that the digital printing ink is formed, in which a reaction temperature of the third thermal process is between 120° C. and 150° C. In some embodiments of the present disclosure, the chain extender includes a first reagent and a second reagent, the first reagent includes a polyamine, and a molecular structure of the second reagent is the same as a molecular structure of the aqueous bridging agent. In some embodiments of the present disclosure, the aqueous bridging agent includes a structural unit represented by formula (1), in which any two or more of the R1, R2, and R3 include a structural unit represented by formula (2), and when any two of the R1, R2, and R3 include a structural unit represented by formula (2), the other of the R1, R2, and R3 includes a hydrophilic group. In some embodiments of the present disclosure, the base cloth has a plurality of yarns interwoven with each other, and the digital printing ink wraps each of the yarns. In some embodiments of the present disclosure, the base cloth has at least two layers, and the digital printing ink is disposed between the two layers of the base cloth. According to some other embodiments of the present disclosure, a manufacturing method for a digital printed fabric includes the following steps. A first thermal process including a step of mixing a dye, a crosslinking agent, and a polyol is performed, such that a polyol is formed, in which a reaction temperature of the first thermal process is between 70° C. and 90° C. A second thermal process including a step of mixing the polymer dye and an aqueous bridging agent is performed, such that a first mixture is formed, in which a reaction temperature of the second thermal process is between 90° C. and 120° C. The first mixture and a chain extender are mixed, such that a second mixture is formed. The second mixture is printed on a base cloth, such that the second mixture covers the base cloth and infiltrates into the base cloth. A third thermal process is performed, such that the second mixture is formed into a digital printing ink, and the digital printing ink is disposed on the base cloth, in which a reaction temperature of the second thermal process is between 120° C. and 150° C. In some embodiments of the present disclosure, a reaction time of the second thermal process is between 20 minutes and 60 minutes, and a reaction time of the third thermal process is between 2 minutes and 5 minutes. According to some other embodiments of the present disclosure, a digital printing ink for a digital printing process on fabrics is manufactured by a manufacturing method including the following steps. A first thermal process including a step of mixing a dye, a crosslinking agent, and a polyol is performed, such th