Precautions for high temperature and high pressure dyeing machine
Aug 03, 2022
1. Preparation of dye liquor
When preparing the dye 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 dispersion dyeing quilt will be destroyed, and the dye will be removed. In addition to the preparation, it can also be prepared by the dusting method, that is, the dye is slowly sprinkled into cold water under high-speed stirring, and the dye bath should not be left for a long time after preparation. It needs to be stirred slowly with a mixer to prevent precipitation.
2, the choice of dyes
When dyeing, try to choose varieties with good diffusivity and levelness, and choose dyes with similar dyeing performance when combining colors.
3. Restoration cleaning
Reduction cleaning is an important part of removing floating color. After reductive cleaning, the color is slightly lighter. At the same time, the rubbing fastness and the light fastness were improved.
4, the prevention of tar spots
The so-called tar spot is a viscous substance formed in the dye liquor, and the main components are dye dispersant and polyester oligomer.