Effect of prin and dyeing grade sodium alginate paste on rotary screen prin

　　Sodium alginate paste can be perfectly applied to rotary screen printing, which makes the printing production have many colors, rich colors, full layers and lively patterns, especially when printing large patterns, and can obtain excellent printing results. Because rotary screen printing requires high performance such as dilution resistance, temperature resistance and non-delamination, controlling the rheology and permeability of printing paste is one of the important factors that determine the quality of rotary screen printing, which determines the printing performance, the surface color supply of dyes, the smoothness of pattern outline and so on. Today we will take you to know about the application of sodium alginate paste in rotary screen printing.

　　1. Excellent rheology: Sodium alginate paste used in rotary screen printing can ensure excellent rheology. Because rotary screen printing requires that the color paste can be easily scraped out of the mesh, and can maintain a smooth outline and a uniform surface, it is usually required that the original paste should have excellent rheology and good thixotropy. Secondly, the definition of pattern outline is not only related to the rheological properties of the original paste, but also related to the wandering properties of the original paste itself.

　　2. Good penetrability: For rotary screen printing, the penetrability of the original paste is an important criterion for selecting the original paste. Because the color paste is piled up on the surface of the fabric through the mesh during printing, it is not like roller printing, which is pressed back and forth by the extrusion of the cylinder or flat screen printing, so that the color paste enters the gap of the fabric. Therefore, it is easier to obtain uniform surface effect and full color by choosing sodium alginate paste with strong permeability.

　　3. Water-holding capacity: When hydrophobic synthetic fibers are printed by rotary screen printing, some raw pastes with poor water-holding capacity will have serious infiltration.

　　4. Spinnability of the original paste: The original paste with excellent spinnability has strong adhesion to the fabric, which is even more important in rotary screen printing of synthetic fiber fabrics. If the conjunctival adhesion of the original paste is not good, it will often cause peeling, mutual staining and pollution, so this is also one of the important reasons for choosing the original paste of sodium alginate in rotary screen printing.