Repair methods of common overflow dyeing machine defects
Sep 05, 2021
Someone once analyzed the formed dye spots and color spots, and repaired the 3 dye spots: dyeing various polyester and its blended fabrics on high-temperature and high-pressure overflow dyeing machines often produces dye spots. Generally low poly on polyester It can be seen that the dispersant in the dye is about 30%, and the impurities such as fiber scraps are about 20%. Discussion) Generally, the weight reduction and impurity removal rate of pre-treated fabrics is about 10% or more. Only when this number is reached, can it be possible to reduce the further dissolution of impurities and the aggregation of other substances during the dyeing process; secondly, sometimes it is not so much. To choose a good disperse dye, it is better to use a good auxiliary. In fact, the diffusibility, solubility, directness, levelness, and even color fastness of the dye can only be compensated and improved by adding auxiliary agents.
Through the introduction of repairing the defects of the overflow dyeing machine, <Through the introduction of the repairing of the overflow dyeing machine defects. I hope to give some guidance and suggestions to friends who want to buy an overflow dyeing machine!
Because the fabric is basically under tension-free conditions, 1 fold printing (chicken paw print, eyebrow wrinkle) prevention and repair: dyeing on the overflow dyeing machine. Practice has proved that the formation of fold printing mainly has five factors:
① Potential factors in yarn weaving.
②The heat shrinkability of two or more fibers constituting the fabric is inconsistent.
③The size of the dyeing bath ratio.
④The dyeing temperature rises/drops too fast.
⑤ According to the dyeing and finishing products and requirements, choose the machine to process.
In general, in addition to mechanical problems, the repair of two-color flowers: resulting in color flowers on the overflow dyeing machine. Often due to light and medium colors, the amount of dye is small, and the leveling agent is not effective, and the dyeing process heats up too quickly. There are many reasons, such as accidental feeding and inadvertent addition, which can be exhausted.