Transfer printing has the best effect on pure polyester fabrics. Because polyester fibers are not colored by disperse dyes on polyester-cotton blended fabrics, the color is lighter than pure polyester fabrics. phenomenon. Pure nylon fabric can also transfer printing, but the color yield is low, and the fastness to wet processing is poor. The transfer printing method consumes 2 times the length of the fabric. It is difficult to recycle waste paper and residual dyes after printing, and it is difficult to print dark colors. Therefore, it is mostly used for partial printing on some fabrics such as textured silk and knitted fabrics, and some Decorative print.
In recent years, disperse dye transfer printing is also used for natural fibers. In order to disperse dyes to absorb, diffuse, and fix on natural fiber textiles, the textiles must be pretreated before printing, including chemical modification and pre-swelling. Generally speaking, this pre-treatment disperse dye can dye natural fibers, but the fastness and color vividness are not as good as polyester fiber fabrics. Careful selection of dyes or development of new disperse dyes is required. Another disadvantage of this method is that it requires pretreatment before printing, which not only adds a processing step, but also has many ecological problems, such as the toxicity of the treatment agent, the consumption of energy and water, and the generation of sewage.