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Causes of color blooms in textile dyeing



Causes of color blooms in textile dyeing Tag: Textile dyeing functional fabric flame retardant cloth Color distortion (including color difference, color inconsistency, etc.) is a c…

Causes of color blooms in textile dyeing

Tag:

Textile dyeing functional fabric flame retardant cloth

Color distortion (including color difference, color inconsistency, etc.) is a common and common quality problem in the dyeing process, and its causes There are:

(1) Process formulation and operation problems: Unreasonable formulation or improper operation will produce color flowers.

(2) Equipment problems: For example, after polyester is dyed with disperse dyes, the temperature in the oven of the heat-setting machine is different and it is easy to produce color differences and color flowers, and the rope dyeing machine pump Insufficient strength can also easily cause color flowers and so on.

(3) Dye problems: dyes are easy to aggregate, have poor solubility, poor compatibility, are too sensitive to temperature and pH, and are prone to color flowers and color differences.

(4) Water quality problems: Poor water quality causes dyes to combine with metal ions or dyes and impurities to agglomerate, resulting in colored flowers, light colors, inconsistent colors, etc. Phenomenon. The auxiliaries related to color flowers mainly include penetrants, leveling agents, chelating dispersants, pH control agents, etc. The penetrating agent has insufficient penetrating power, which can easily cause uneven penetration of the dye solution and color flowers. Leveling agents include various types of leveling agents for polyester, cotton, wool, nylon, and acrylic fiber, and the quality varies. The selection of leveling agents must take into account the dispersing and dissolving effect of the dye, the retarding dye migration effect, It helps penetration and even complexation of metal ions in water, and factors such as PH suitability and foaming properties that affect the coloring rate must be taken into consideration. Leveling agents play an important role in improving color flowers, color spots and other phenomena. without. The quality of chelating dispersants is also related to leveling issues. In the current situation where water quality is getting worse and worse, the help of chelating dispersants in leveling dyeing should be paid more attention to. The issue of pH control is an issue that is not taken seriously. pH control is out of the question, so color flowers and color differences continue to occur.

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