Adaptability of Air and Liquid Multi-flow Dyeing Machine to sensitive colors
Oct 21, 2021
From the perspective of heat transfer, the temperature field change and thermal diffusion process of the dyeing process, and the influence of the temperature field change during the dyeing process on the sensitive color are analyzed from the perspective of heat transfer, and the heat balance of the Air and Liquid Multi-flow Dyeing Machine and the air atomization dyeing machine are discussed. condition. It is pointed out that when dyeing sensitive colors in the Air and Liquid Multi-flow Dyeing Machine, the amount of liquid on the fabric is lifted to shorten the thermal equilibrium time of the temperature. The front-mounted combined dyeing liquid nozzle is used to squeeze the fabric against the fabric. And the osmotic pressure of the airflow has multiple effects on the heat diffusion in a single cycle of the fabric, providing favorable conditions for the temperature field required for levelling of sensitive colors.
Air and Liquid Multi-flow Dyeing Machine and sensitive colors
In the fabric dip dyeing process, the dyeing of sensitive colors is more difficult and demanding. It is not only related to the performance of the dye, but also involves equipment performance and process control. Some sensitive color dyes mainly show the difference in the dye uptake rate of each component dye at the same temperature, and the sensitivity to temperature is also different.
In order to ensure uniform dyeing of such sensitive color dyes, in addition to selecting dyes with better compatibility and adopting process control, it is more important to control the temperature field change conditions of the equipment.
The Air and Liquid Multi-flow Dyeing Machine not only incorporates the elements of airflow dyeing and ordinary overflow jet dyeing, but also solves the problem of the difficulty of dyeing sensitive colors with current airflow dyeing machines in terms of sensitive color dyeing.
The structure principle of Air and Liquid Multi-flow Dyeing Machine and airflow dyeing machine
According to the structural principle of Air and Liquid Multi-flow Dyeing Machine and airflow dyeing machine, the temperature field changes of the two under the same process conditions are analyzed, and the temperature difference caused by the large temperature gradient during the dyeing process of sensitive color is pointed out. , Is the main reason that affects the uniform dyeing of sensitive color dyes; at the same time, it explains the inherent mechanical conditions and structural characteristics of the Air and Liquid Multi-flow Dyeing Machine suitable for sensitive colors.
Analysis of temperature field during dyeing
From the perspective of heat transfer, dyeing can be regarded as a heat transfer system composed of the dye, liquid phase, gas phase, and equipment. The collection of temperatures at various points in it is called the temperature field, which is a function of time and space.
The temperature in dyeing is actually a temperature change process, and the temperature distribution changes over time. Therefore, the temperature field of the high-temperature and high-pressure dyeing machine is a non-steady temperature field.