Precautions for HT Jigger Dyeing Machine dyeing process

(1) The main factors that affect the quality of dyeing with overflow dyes include dyes and methods, dyeing temperature, salt and alkali types, dosages and methods, dyeing time, dye liquor bath ratio, etc. Among the above influencing factors, in addition to the participation method and bath ratio of dyes, salts, and alkalis, other factors only affect the shade of the fabric, that is, the factors that affect the fixation rate of reactive dyes.

(2) About disperse dyes. For disperse dye dyeing at 90°C, the heating rate can be higher, and above 90°C, especially when it is close to 130°C, the heating rate should be controlled to slowly approach the dyeing temperature to avoid uneven dyeing. The dyeing of disperse dyes is strongly affected by temperature. Therefore, in the temperature zone where the dye is absorbed, increasing the number of cycles of the fabric and the dye liquor can make the dye and temperature in the dyeing room evenly spread, which is beneficial to the level dyeing of the fabric.

After the dyeing is over, the temperature should be lowered slowly at the beginning to avoid fabric wrinkles caused by sudden cooling. When the temperature drops to 100°C, the temperature can be quickly cooled down to 80°C, and then overflow cleaning is performed to further reduce the temperature in the dyeing room. If the discharge and water inflow are carried out at a higher temperature, it is easy to form fabric creases and affect the dyeing quality.