Printing Inks for Digital Inkjet Printing

So far, there is no universal ink for textile digital inkjet printing, but all ink compositions must meet certain basic requirements, such as viscosity, surface tension, density, vapor pressure, electrical conductivity, thermal stability, toxicity, flammability properties, dye purity and solubility, mechanical adaptability, color setting, corrosivity, storage stability, color brilliance, light and washing fastness, etc., among which a degree, surface tension, stability, color brilliance and various The item fastness is the most important indicator.

The ink for inkjet printing usually includes pigments (dyes or coatings), carriers (water/solvent) and additives (including Hehe, viscosity modifiers, cosolvents, dispersants, defoamers, penetrants, humectants, etc.), among which Additives should be used separately as needed.

Compared with traditional fabric printing, the cat degree of digital inkjet printing ink is much lower, the amount of ink applied to the fabric is very small, and only 20 mzm of ink can be printed at the highest, which requires inkjet printing. The color supply of the printed ink is high, and even the lowest use can show strong colors. Therefore, when selecting dyes, special attention should be paid to the adaptability to the fabric and the color enhancement performance.

The dyes currently used in inkjet printing are mainly reactive dyes, disperse dyes and acid dyes. In wool, silk and carpet printing, acid dyes are used, but should be carefully selected for their solubility, stability and compatibility. Inkjet printing of polyester fabrics uses disperse dyes, which have relatively high requirements on the dispersion stability, ink compatibility and particle size of the dyes. Reactive dyes are mostly used in inkjet printing of cellulose fiber fabrics.