Precautions for high temperature and high pressure dyeing machine

First. Preparation of dye solution

When preparing the dyeing solution, first use a small amount of cold water to make the dye into a paste, 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, the disperse dyeing quilt will be destroyed, and agglomeration will be removed. In addition to the preparation, the dusting 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 appropriate 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.

Second, the choice of dyes

When dyeing, try to choose varieties with good diffusibility and level dyeing properties, and use dyes with similar dyeing properties when matching colors.

Three, restore cleaning

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

Fourth, the prevention of tar spots

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