Precautions for high temperature dyeing machine

1. Preparation of the dye solution When preparing the dye solution, first use a small amount of cold water to make the dye into a slurry, and then dilute it with room temperature water. Note that the temperature of the diluting water should not be too high. If it is higher than 60 degrees, the disperse dyeing quilt will be damaged. In addition to the above preparation, the cohesion dye can also be prepared by dusting method, that is, slowly sprinkle the dye into cold water under high-speed stirring. It is not suitable to leave the dye bath for a long time after preparation. The same feed needs to be stirred slowly with a stirrer to prevent precipitation.

2, the choice of dyestuffs When dyeing, try to choose varieties with good diffusibility and level dyeing properties, and dyes with close dyeing properties should be used when color matching.

3. Reduction cleaning Reduction cleaning is an important part of removing floating color. After reduction and cleaning, the color fades slightly. At the same time, friction fastness and light fastness are improved.

4, the prevention of tar spots The so-called tar spots are the viscous substances formed in the dyeing solution, and the main ingredients are dye dispersants and polyester oligomers. Polyester oligomer is a polycondensation of polyester, it will ooze from the fiber and flow into the dye solution to adhere to the surface of the fiber during the high temperature and long-term dyeing process.