Ribbon dyeing water standard

In order to achieve an accurate dyeing, the quality standards for bleaching and dyeing water must be formulated, and a management system must be established. Every day, the test is announced and it must be effectively controlled within the standard. High water hardness, oxygen bleaching easily produce calcium and magnesium deposits adhered to the bleached matter, rough touch, affect the whiteness, feel, dyeing water-soluble dyes to make water-soluble genes form water-insoluble lakes, affecting Floating color removal. In addition, Ca2+ and Mg2+ ions in hard water react with sulfonic acid ions on the dye molecules, and are converted into calcium sulfonates and magnesium sulfonates that are insoluble in water, which weakens the hydrophilicity of the dyes and makes the dyes less soluble and spreads. The floating color is not easy to clean, and the Ca2+ and Mg2+ ions in the hard water react to form CaCo3, Mg Co3 and other insoluble substances to combine with the dye to form the lake and deposit on the surface of the fabric, causing the dyed object to have a rough feel and affecting the color fastness.

It can be seen from the pre-treatment to the entire process of dyeing, soaping, and other wet processing that water quality that meets the requirements of the standard must be used. This is one of the prerequisites for accurate dyeing.