Overview of the latest textile printing inks

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Overview of new textile printing inks

1 All water-soluble thermosetting ink

all water-soluble thermosetting ink has many excellent characteristics: soluble in water, diluted with water, and clear with water. At present, there are prepared ones that can be directly opened for use. The ink has been internationally stipulated that high molecular materials used in aircraft, such as plastics and textiles, must be flame retardant materials and pass the 4A cleaning test and fire resistance test of the American Association of dyeing and chemical workers (AATCC). In addition, it also has good drying, cleaning and light resistance. It feels soft, does not contain solvent, and does not need solvent evaporation time. It can be put into the oven immediately after printing. When printing with dye (solvent) emulsion, all solvents must be removed before polymerization

2. New hot melt ink series

to develop a new hot melt ink, we must meet two requirements: first, it can adhere to nylon; The second is to adopt a new material. The combination of these two points can make a hot melt ink that can not only adhere to the purchase and measurement precautions of nylon pressure testing machine, but also heat transfer printing. Hot melt ink is the solvent of vinyl resin in plasticizing medium. Vinyl resin expands and absorbs plasticizer. After heating, the plasticizer is absorbed by the resin and begins to dissolve the polymer. After dissolution, the plasticizer is evenly dispersed around the polymer, and then a plastic film is formed

when this hot-melt ink is printed on nylon, it often cannot obtain satisfactory adhesion. At present, a new chemical agent is used to develop a modified hot-melt ink, which not only has all the characteristics of hot-melt ink, but also has good adhesion to some nylon fabrics on this basis. This new hot melt ink has many excellent characteristics: it can be used in high-speed printing machines; Good adhesion to nylon fabric; Good washing performance; It can be ironed (ordinary hot melt ink cannot be ironed); It can be printed on transfer paper; Flocking printing has good adhesion to the detection of medical equipment; It contains no solvent and has passed the air and water pollution test. The successful development of this kind of ink has greatly opened up the textile printing market

3. Sublimation transfer ink

the so-called sublimation transfer is a substance that changes from a solid state to a gas state and then returns to a solid state instead of appearing in a liquid form. Recently, a disperse dye has been developed and has been used in plate printing

when making, disperse dyes are mixed into the printing medium, and then printed on paper. The evaporation of the solvent in the ink is only the need of the drying process. The solvent can be evaporated by air drying and mechanical heating. The transfer process is to put the printing surface of the printing plate on the fabric, and then heat it at high temperature for 30 seconds. The dye in the ink evaporates from the ink at high temperature and is absorbed by the fabric

at present, people's demand for textile printing is increasing, and the application of synthetic fibers is becoming more and more extensive. This trend has promoted the rapid development of sublimation transfer printing. The achievements of ink manufacturing industry can not only meet the needs of printing enterprises in the past, but also meet the needs of the future

source: fine chemicals in the 21st century

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