How much do you know about the inkjet printing pretreatment process for polyester fabrics?

       Inkjet printing technology is a new high-precision printing technology with strong color expression. The fabric of the fabric has a great influence on the inkjet printing effect. Since polyester itself is a hydrophobic fiber, digital printing using the direct injection process has a very serious problem of ink bleeding on the polyester fabric. Traditional printing paste sizing is used to prevent The bleeding effect is poor and unstable, the abrasion resistance and light fastness are low, and the effective utilization rate of ink is low. Therefore, the current digital printing on polyester fabrics can only use heat transfer printing. The printed pattern is first printed on heat transfer paper, and then transferred to the surface of the fabric. However, when thermal transfer technology is used for digital printing, not only will the concave and convex patterns on the jacquard fabric of the thermal transfer product be flattened due to hot pressing, affecting the feel and visual experience, but the fabric will also produce luster due to hot pressing, and the thermal transfer The printing process is complex, the process cost is high, and it also consumes thermal transfer paper. Therefore, it is very necessary to provide a direct-injection digital printing process for polyester fabrics.

        In order to meet the fabric performance requirements of direct-jet inkjet printing and prevent ink from bleeding directly onto the fabric, fabrics used for inkjet printing must be properly pretreated to achieve satisfactory inkjet printing effects. Using different inks and different fabrics, the inkjet printing pretreatment processes are different. Many ink manufacturers at home and abroad are developing pretreatment agents suitable for their own ink properties. For example, polyester fabrics are treated with plasma treatment, cationization or sol-gel padding to improve the inkjet printing time of polyester fabrics with dye inks. anti-seepage properties. However, the cost of producing pretreatment agents by foreign companies is high and expensive. At present, polyester fabrics mostly use disperse dye ink inkjet printing. At present, domestic ink manufacturers’ research on the inkjet printing pretreatment process of polyester fabrics is mostly focused on pigment inks, and disperse dye ink is used in the inkjet printing pretreatment process of polyester fabrics. There is less research, but it is very necessary to provide a pretreatment liquid for direct printing of polyester fabrics with disperse dye ink.

       Dispersed direct injection pre-treatment fluid JV-115 can effectively improve the depth, brightness and clarity of flower shape outlines;

It has little impact on fabric feel; it is the finished product after high-temperature baking and can be washed without water; it is suitable for high-temperature dispersion ink and low-temperature dispersion ink; it has good permeability.

       It is suitable for dispersed digital direct-injection printing of polyester and its blended fabrics. It can significantly improve the color yield, brightness, and pattern outline clarity of dispersed digital printing, and can improve the color fastness of various colors.