Analyzing the cloth output process of the high temperature and high pressure dyeing machine

The first is the pre-processing stage. In this stage, the fabric needs to go through a series of steps such as washing, scouring, and bleaching. These steps are designed to remove impurities and oils from the fabric, thereby maintaining the quality of the dyeing.
In terms of cleaning, methods such as hydrochloric acid, alkali washing and bleaching are usually used. During the scouring stage, the fabric is usually treated with high-temperature steam to speed up the penetration of the dye. Then, in the bleaching stage, the residual bleach and impurities in the fabric are removed by pickling and other methods.
Next comes the dyeing stage. In this stage, the fabric is put into the dye liquor and dyed under high temperature and high pressure. The effect of high temperature and high pressure can accelerate the penetration of dyes and make them more evenly dispersed in fabric fibers.
In the dyeing solution, ingredients such as pigments, auxiliaries and pH regulators are usually added. Among them, pigment is the core substance of dyeing, which achieves the purpose of dyeing through chemical reaction with the fiber structure of the fabric.
Auxiliaries are used to enhance the penetration and stability of dyes and make dyeing more uniform. pH regulators are chemical properties that adjust the color and shade of dyes to suit specific dyeing needs.
Then comes the color setting stage. At this stage, the dyed fabric needs to be fixed so that the dye can be firmly fixed in the fiber to avoid fading and fading. The process of color fixing is usually done by heat and steam treatment, which makes the dye molecules more firmly combined in the fiber.