These key points must be done well in the accurate control of dyeing bath ratio

So as to bring the difference of dyeing pipe or cylinder. Therefore, in this case, pay attention to the consistency of process conditions such as cloth speed.
Another method is to adjust the inlet water level value before the fabric is put into the cylinder, for example, the two tube cylinder is adjusted from 350kg to 292.5kg, and the bath ratio is 450kg / (292.5kg + 450 & times; 1.5kg) = 1:2.15, which is the same as that of the four tube cylinder dyeing 900kg fabric. Generally speaking, this method is simpler and more reasonable, because there is no need to adjust other process conditions. However, it should be noted that if the adjusted liquid level is less than the original set liquid level, pay attention to the liquid volume. While meeting the needs of dye circulation of the main pump and pipeline in the dyeing process, if the dye is added and the chemical is dissolved with the return liquid, it should also meet the needs of the return liquid volume; If the adjusted liquid level is more than the original set liquid level, pay attention to whether the liquid level has exceeded the Teflon pipe at the lowest point of the cloth storage tank. However, generally, these factors are considered in the original set water level value before the fabric is put into the cylinder and the design volume below the cloth storage tank of the air flow dyeing machine, including the filter. There is a large margin value for both positive and negative, which can fully meet the needs of liquid level adjustment.
(5) During the operation of air flow dyeing, it shall be carried out in strict accordance with the process procedures and process requirements prepared by the process, and cannot be changed at will. For example, the water inlet mode of feeding chemical materials, the set water inlet level in the cylinder, the dyeing amount of each cylinder and each tube, etc., shall be carried out in strict accordance with the process requirements, because the factors causing the change of bath ratio have been considered in the process design, The dosage of various dyes and chemicals is determined according to the calculated bath ratio. If the operation process is not strictly implemented according to the process, it is likely to cause inconsistency between the actual bath ratio and the calculated bath ratio of the process, which is very unfavorable to the dyeing quality and the reproduction of the results.
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afterword
Understanding the composition of air flow dyeing bath and the liquid inlet mode during dyeing is helpful for us to correctly calculate the dyeing bath ratio and prevent the fluctuation of bath ratio in the dyeing process, so as to accurately control the bath ratio and avoid the dyeing quality problems caused by the factors of bath ratio< br />
Author: Jiang Jiayun < br / >