According to the printing method, digital printing technology is divided into: digital direct printing method, cold transfer method and thermal transfer method.
1. Digital direct printing method
Digital direct jet printing is a method of direct jet printing on sizing semi-finished textiles. This method is suitable for the use of paint, active dispersion, and acid dye ink. The process is: according to the type of ink, select the appropriate semi-finished fabric (without adding softener), carry out the sizing, drying, rolling process, and then go to the digital equipment. Direct spray printing (the fabric is treated like paper), and then drying, steaming, washing, drying, softening and setting and other processes (the paint can be fixed as long as it is baked).
2. Cold transfer method
Cold transfer printing is a printing method that first prints textile dyes on specially coated paper, and then uses a cold transfer machine to transfer the pattern to textiles. This method is suitable for all kinds of fabrics except blended fabrics, and the inks used are dye inks such as reactive and dispersive: this method also requires semi-finished fabrics to be embossed with printed decals. There are two treatment methods for the embossed fabrics. One is to carry out cold reactor chemical reaction treatment to fix the color (the fabric needs to be chemically treated in advance), and the other is to carry out traditional steaming, washing, setting and other traditional processes.
3. Thermal transfer method
Thermal transfer printing is a printing method in which textile dyes are printed on specially coated paper, and then the pattern is transferred to textiles by thermal sublimation. This method is similar to traditional paper printing, and can only be used for polyester or textiles with high polyester content. The transfer fabrics are all processed semi-finished products and no softener has been added (the softener may affect the coloring rate). Figure 3 is in the production process of printing paper, and Figure 4 is after printing, using a thermal transfer machine to transfer the pattern on the paper to the semi-finished chemical fiber fabric.