Among the commonly used disperse dyes, most dyes have poor heat-resistant dispersion stability and large aggregation tendency, so it is easy to cause uneven color absorption.
However, disperse dyes have stronger dye transfer ability than other dyes. As long as there is sufficient heat preservation dyeing time, active dye transfer can effectively correct the "uneven dyeing" phenomenon generated in the warming dyeing stage, so that the dyes are in the fiber (fabric) The distribution on the implementation is uniform.
However, if the heat preservation dyeing time is too short and the dye transfer effect is insufficient, the uneven color absorption generated during the temperature rise may become a permanent color flower.
It can be seen that when disperse dyes are used for high-temperature and high-pressure dyeing of polyester, the high-temperature insulation dyeing time must be sufficient. In order to improve production efficiency, it is not necessary to shorten the thermal insulation dyeing time at will.
Previous: Cationic Yarn