Precautions for high temperature and high pressure dyeing machine

1、 Preparation of dye solution

When preparing the dye solution, you should first use a small amount of cold water to make the dye paste, and then dilute it with room temperature water. Note that the temperature of the dilute water should not be too high, higher than 60 degrees, and the disperse dye quilt will be damaged, while the dye will condense. In addition to increasing the preparation, you can also use the powder method to modulate the dye, that is, slowly sprinkle the dye into cold water under high-speed stirring, and do not leave it for a long time after the dye bath is prepared. The same inlet needs to be stirred slowly with a mixer to prevent precipitation.

2、 Selection of dyes

When dyeing, try to choose the varieties with good diffusivity and levelness, and choose the dyes with similar dyeing performance when color matching.

3、 Reduction cleaning

Reduction cleaning is an important part of removing floating color. After reduction and cleaning, the color will be slightly lighter. At the same time, the abrasion fastness and sun fastness are improved.

4、 Prevention of tar spots

The so-called tar spots are viscous substances formed in the dye solution, and the main components are dye dispersants and polyester oligomers.