Reasons for the appearance of colored flowers after dyeing by the dyeing machine:
1. Process formulation and operation issues:
Unreasonable craftsmanship or improper operation will produce colored flowers; unreasonable craftsmanship (such as excessively fast temperature rise), poor operation, knotting during dyeing, and power outage during dyeing; heating is too fast, and the holding time is not enough; the scouring water is not clean, the cloth surface is PH Uneven value; large amount of oily slurry in the embryo cloth, which has not been completely removed after scouring; the uniformity of the pre-treatment cloth surface
2. Equipment failure problem:
For example, after disperse dye dyeing polyester, the temperature in the oven of the heat setting machine is also easy to produce chromatic aberrations, and the insufficient pump power of the rope dyeing machine can also easily cause chromatics. The dyeing capacity is too large and too long; the running speed of the dyeing machine is slow; the circulatory system of the dyer is blocked, the flow rate is too slow, the nozzle is not suitable, etc.
3. Raw material issues:
The degree of uniformity of fiber raw materials and fabric organization.
4. Dye problems:
Dyes are easy to aggregate, have poor solubility, poor compatibility, and are too sensitive to temperature and pH, which are prone to color mottling and chromatic aberration. For example, the active turquoise blue KN-R is easy to produce colored flowers.
The reasons for dyeing include poor levelness of dye, migration of dye during dyeing, and fineness of dye
5. Water quality issues:
Poor water quality may cause dyes and metal ions to combine or dyes and impurities to condense, causing color blurs, and light colors are not attached.
Improper adjustment of the pH value of the dyeing bath;
6. The problem of additives:
Improper dosage of additives; for the problem of additives, the additives related to coloring mainly include penetrant, leveling agent, chelating dispersant, PH value control agent, etc.
https://www.tonghuadyeingmachine.com/
