What should be paid attention to when using a high-temperature dyeing machine?

1. Preparation of dye liquor When preparing the dye liquor, you should 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 water temperature for dilution should not be too high. If it is higher than 60 degrees, the disperse dyeing quilt will be damaged and condensed. In addition to preparation, the dye can also be prepared by powdering, that is, the dye is gradually sprinkled into cold water under high-speed stirring. The dye bath should not be left for a long time after preparation. At the same time, it needs to be slowly stirred with a mixer to avoid sedimentation.
2. Selection of dyes When dyeing, try to choose types with good diffusibility and leveling properties. When matching colors, dyes with relatively close dyeing properties should be selected.
3. Reduction cleaning Reduction cleaning is an important part of removing floating colors. After reduction cleaning, the color becomes slightly lighter. At the same time, the friction fastness and light fastness are improved.
4. Prevention of tar spots The so-called tar spots are viscous substances formed in the dye liquor, and the main components are dye dispersants and polyester polymers. Polyester polymer is the condensation of polyester. During the long-term dyeing process at high temperature, it will seep out of the fiber and flow into the dye solution to adhere to the fiber surface.
Measures to avoid tar spots are: 1. Strengthen fabric pretreatment. 2. Increase the dye bath ratio. 3. Use high temperature and high pressure dispersant. 4. Use high temperature drainage to prevent the dye from crystallizing after cooling. 5. Shorten the equipment cleaning cycle. When preparing the dye solution, the dye should be mixed into a slurry with a small amount of cold water, and then diluted with room temperature water. Note that the water temperature for dilution should not be too high. If it is higher than 60 degrees, the disperse dye quilt will be damaged and condensed. In addition to the above preparation, the dye can also be prepared by powdering, that is, the dye is gradually sprinkled into cold water under high-speed stirring. The dye bath should not be left for a long time after preparation. At the same time, it needs to be stirred slowly with a mixer to avoid sedimentation.