Remedial treatment of sudden failure of high temperature and high pressure dyeing machine

(1) Less than 100 ℃ stage In this stage, the pressure has not been raised yet. If there is a fault, the consequence will not be serious, and the treatment is more convenient and simple. After the fault is eliminated, the original process can still be used and the re dyeing can be started from 60 ℃. Under 100 ℃, the expansion of polyester fiber is not enough and the disperse dyes are not dyed in large quantity, so the problems of color blooming and wrinkle printing are not obvious. But in case, when the temperature reaches 130 ℃, the dyeing time can be extended to make up for the safety. In this way, the staining results are generally satisfactory. (2) 100 ℃ to 130 ℃ stage When the failure occurs in the stage of 100-130 ℃, due to the existing pressure in the dyeing machine, the first thing to pay attention to is safety. At this stage, due to the faster expansion speed of polyester fiber and the faster dye uptake, it is very difficult to avoid color stains. If it is not a big accident and the treatment time is not too long, the high temperature leveling agent can be added and the heat preservation dyeing time can be extended; if the accident treatment time is long and the fabric stays in the dyeing machine for too long, the high temperature carrier method must be used for strengthening treatment; if the problem is serious, the high temperature carrier method can be repeated. (3) 130 ℃ heat preservation dyeing stage The failure occurred in the stage of 130 ℃ heat preservation dyeing. When the accident was treated after lowering the pressure and temperature, the time of heat preservation should be ignored, and the insurance remedy should be made by extending the heat preservation time according to the process regulations. At this stage, the adsorption of disperse dyes is sufficient, so it is not enough to make them play the role of migration and penetration and fully enter into the fiber, so the risk of defects is greater than that before 100 ℃, but less than that at 100-130 ℃. However, if the fabric is stopped due to blockage, or the dyeing machine stays for a long time, high temperature leveling agent 0.5-1g/l should be added during re dyeing, and then the holding time should be appropriately extended. This can not only promote and strengthen the dye transfer, but also help to overcome the wrinkle.

Several measures of energy saving and consumption reduction in textile printing and dyeing enterprises

Textile printing and dyeing industry is a traditional labor-intensive industry with many production processes, high process requirements, more labor and low profit. In the fierce market competition to improve product quality at the same time, we should pay more attention to energy saving, can take the following measures. Pay attention to management innovation and save labor First, it is necessary to take part-time, merge, and bring along, and to streamline the structure. Office automation, improve work efficiency, reduce duplication and invalid labor. Equipment contract, contract aircraft to people, improve the employment environment. The implementation of fine quota, full load work, enhance the sense of responsibility of employees. The second is to improve the degree of equipment automation. In terms of printing and dyeing, the automation of dyeing equipment can not only improve the first-time success rate and dyeing efficiency, but also reduce the labor cost. This is a great burden reduction for enterprises. Third, it is necessary to innovate operation methods and simplify operation procedures and technical requirements. For example, for spinning joint, the "sleeve joint" method is used to replace the "pipe jacking joint" method to reduce the technical difficulty. The electronic yarn cleaning device on the winder is used to remove the joint defects, shorten the joint time and reduce labor. The fourth is to optimize the process, the use of super draft can not only improve the yarn quality level, but also effectively improve the front spinning unit yield, achieve high yield and low consumption, reduce labor.