The open rotary screen printer uses air as the only medium that drives the fabric to run, without the assistance of other devices. Water is only used for dyeing, so it can be dyed with a low liquor ratio. For example, the bath ratio of cotton fiber is about 1:4, and chemical fiber is about 1:2~1:3 to atomize the dye solution, so that the dye solution does not need to be sprayed directly on the fabric, which prevents the strong water from spraying the fabric and accelerating the dye penetration into the fabric fiber. . Due to the low liquor ratio, the consumption of additives, salt and alkali is greatly reduced. The special washing water system (VPR) that can be washed and drained provides 180 liters of water per minute for washing, which has high washing efficiency and reduced water consumption, which is 50% lower than that of traditional dyeing machines. Due to the lack of water, the time for water intake, drainage, heating, cooling and other processes is reduced, and the time of the entire dyeing process is correspondingly shortened. As the overall time is shortened, the power consumption is lower than that of the traditional water flow dyeing machine.
　　 The control of the moisture regain of the falling cloth during the whole drying process is related to three important indicators: product quality, production efficiency and energy consumption cost. The reduction of energy consumption cost is mainly aimed at avoiding over-drying.

Practice has shown that the control of the moisture regain of the falling cloth in the automatic drying process can produce higher economic benefits than the moisture regain of the falling cloth through the hand feel test: First, relying on equipment to digitize and automate production operations, and workers control production quality indicators Ability can be programmed and standardized accordingly, otherwise there will be a lack of accurate evaluation criteria. Second, the result of proceduralization and standardization is to avoid waste, ensure quality, and improve production efficiency. It can be seen that the production of Hot Air Stenter is more reasonable.