Factors affecting the work of high temperature and high pressure dyeing machine

High temperature and high pressure dyeing machine dyeing various polyester and its blended fabric on the high temperature and high pressure overflow jet dyeing machine often produces dye spots and color spots. Someone has done an analysis of the dye spots and spots formed, and roughly the oligomers on polyester are the majority. , About 50%, the dispersant in the dye is about 30%, and the impurities such as fiber chips are about 20%. It can be seen that, first of all, the treatment or alkali reduction of polyester and its blended fabrics before dyeing is very important (discussed separately). Generally, the weight reduction and impurity removal rate of the pre-treated fabric 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 For good disperse dyes, it is better to use good auxiliaries. In fact, the diffusibility, solubility, directness, levelness, and even color fastness of dyes can only be compensated and improved by adding auxiliaries. The high temperature and high pressure dyeing machine causes the color flowers on the overflow jet dyeing machine. In addition to mechanical problems, it is often due to the light and medium color dyeing, the amount of dye is small, and the leveling agent is not effective, the dyeing process heats up too fast and the material, There are many reasons such as careless addition of materials, which can be overwhelming.