In the wool mill, the dyeing of the wool or wool fabric is carried out in an atmospheric pressure rope dyeing machine. However, in order to minimize the temperature difference and promote the uniform distribution of dyes and auxiliaries in the dyebath, in recent years there have also been attached circulating pumps. Since the introduction of polyester in the wool mill and the production of wool polyester, especially polyester-viscose, the dyeing equipment has been unable to satisfy the general atmospheric rope dyeing machine, so a fast-jet fabric dyeing machine is required.
The rapid jet fabric dyeing machine occupies a small footprint and produces high yields, saving material, power and labor. It has not only high temperature and high pressure, but also atmospheric pressure; it can be used not only for synthetic fibers but also for natural fibers; it can be used not only for dyeing but also for pre-treatment. Because of its versatility, it is more popular with manufacturers.
When dyeing with a rapid spray fabric dyeing machine, the U-shaped tube is firstly injected into the dyeing liquid, and then the dyeing liquid is pumped out from the middle of the U-shaped tube through the circulation heat pump, and then ejected from the top nozzle, and the liquid ejection force is pushed in the nozzle. Next, the fabric circulates inside the tube to complete the dyeing. Since the spraying action of the dyeing liquid contributes to the penetration of the dyeing liquid into the interior of the rope-like fabric, the dyeing bath ratio is also small, and the tension of the fabric is smaller, thereby obtaining a dyeing effect superior to that of the overflow dyeing machine.
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