How to improve the dyeing quality of high temperature dyeing machine?
Nov 28, 2022
1. The influence of the amount of cloth in the high temperature dyeing machine on the dyeing quality.
The dyeing machine has a larger nominal capacity and is not suitable for any fabric. Therefore, in production, the actual capacity of the dyeing machine needs to be determined according to the thickness and width of the fabric. The fabric of the same width, the thinner, the smaller the capacity. This is because if the light and thin fabric is fed at the nominal capacity, the length of the fabric will be too long, and the cycle period during dyeing will become longer, which will easily cause the fabric to be knotted due to disorder.
2. The influence of capstan speed and nozzle pressure on dyeing quality.
The fabric in the dyeing chamber is pulled into the nozzle by the winch. The nozzle is an annular outlet, and the dye liquor is ejected from the nozzle gap. With the help of the pressure of the nozzle, the dye liquor is sprayed on the rope-like fabric, so that the fabric changes position in the dyeing chamber due to accumulation and folding. The speed of the fabric depends on the speed of the winch and the nozzle pressure. Therefore, while increasing the speed of the fabric and the number of dye liquor cycles, attention should be paid to the mutual cooperation between the speed of the winch and the pressure of the nozzle, otherwise it will directly affect the quality of the product.
3. The influence of bath ratio on dyeing quality
The size of the liquor ratio not only affects the color of the fabric, but also affects the normal operation of the fabric in the dyeing machine. If the liquor ratio is too small, the fabric is difficult to run, the winch cannot lift the fabric from the dyeing chamber smoothly, and the fabric runs slowly. If the bath ratio is too large, the fabric floats on the water surface and is prone to turbulence and knots, causing the fabric to dye. Therefore, the determination of the liquor ratio should be minimized on the premise of not affecting the operation of the fabric and ensuring the dyeing quality.
4. The influence of dyeing process on dyeing quality
The main factors affecting the dyeing quality of high temperature dyeing machine include the use and addition method of dyestuff, dyeing temperature, type, dosage and addition method of saline-alkali agent, dyeing time, dye liquor bath ratio and other factors, in addition to the addition of dyestuff, salt and alkali agent In addition to the method and the liquor ratio, other factors only affect the depth of the fabric color, that is, the factors that affect the fixation rate of reactive dyes.
Therefore, after the high-temperature dyeing machine is dyed, it is necessary to slowly reduce the temperature to prevent the fabric from wrinkling due to sudden cooling. When the temperature drops to 100 °C, it can be cooled to 80 °C by quenching, and then overflow cleaning is performed to further reduce the temperature of the dyeing room. If the discharge and water are carried out at a higher temperature, it is easy to form fabric creases and affect the dyeing quality.