Vacuum freeze dryer (referred to as freeze dryer) is based on the principle of using the three-phase state of water to convert between different temperatures and vacuum environments. With the development of freeze-drying technology and continuous optimization of technology, freeze-drying machines are currently widely used in the cosmetics industry, such as cosmetic freeze-dried powder, freeze-dried facial mask, cosmetic freeze-dried sheets and cosmetic freeze-dried balls, because there is no need to add Preservatives, etc., have high activity freeze-dried cosmetics, and have instant solubility, can be stored for a long time, easy to carry and use, and are deeply loved by consumers!
The working principle of the cosmetic freeze dryer is to put the pre-treated cosmetic solution preparation or raw material into the tray of the freeze dryer material bin for pre-freezing and crystallization (refrigeration is provided by the refrigeration system of the low-temperature freeze dryer), and then through the vacuum pump. The box of the dryer is evacuated, and at this time, the solid ice of the cosmetic preparation material begins to sublime directly into a gas in a vacuum environment. For the efficiency of freeze-drying and sublimation of cosmetics, the heating system of the cosmetic freeze dryer provides the required heat to accelerate the sublimation without affecting the freeze-drying effect.
The whole freeze-drying process is controlled by the PLC electronic control system of the freeze-drying machine. Because cosmetic preparations or raw materials have high nutrition and various functional activities, in the process of freeze-drying machine processing, very precise control is required according to the characteristics of the material. Therefore, on the premise that the freeze-drying machine equipment meets the freeze-drying process, it is necessary to master Drying process technology, the characteristics of each material are different, and the freeze-drying process is also different, ensuring that the color, shape, and active ingredients of cosmetic freeze-dried products are basically unchanged, and they are instant.
According to the different requirements for the use of freeze dryer equipment, cosmetic freeze dryers are divided into laboratory freeze dryers and Chinese freeze dryers. Large freeze dryers can be used for cosmetic experiment operations and Chinese and large-scale processing and production. In terms of function, it can be divided into: gland type freeze dryer and fixed partition freeze dryer, which can meet the vacuum freeze drying processing of various cosmetic materials.
