Precautions for high temperature and high pressure dyeing machine

1. Modulation of dye solution

When preparing the dyeing 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, higher than 60 degrees, and the quilt of the disperse dyeing will be damaged and coagulated, and the dye will be removed. In addition to preparation, powdering method can also be used for preparation, that is, the dye is slowly sprinkled into cold water under high-speed stirring, and it is not suitable to leave the dyeing bath for a long time after preparation. The same feed needs to be stirred slowly with a stirrer to prevent precipitation.

Second, the choice of dyes

When dyeing, try to choose varieties with good diffusivity and level dyeing properties, and choose dyes with relatively close dyeing properties when color matching.

3. Reduction cleaning

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

4. Prevention of tar spots

The so-called tar spot is a viscous substance formed in the dye solution, and the main ingredients are dye dispersant and polyester oligomer.