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    Heat pump drying scheme of cosmetic cotton

    Zhengxu design department Update Date: August 18, 2020

    Disadvantages of traditional electric drying cotton

    1. When the temperature of the non-woven fabric cosmetic cotton is too high at the entrance of the electric oven, the temperature of the non-woven fabric suddenly changes too much, which is easy to cause the shrinkage of the non-woven fabric;

    2. Non woven cosmetic cotton electrothermal When the temperature at the outlet of the oven is too high, because it is already in the drying state at the outlet, when the oven is exposed to high temperature again, This scheme is easy to lead to Non woven fabric make-up quilt scalded;

    3. Non woven cosmetic cotton electrothermal When the oven moves through the cloth guide roller, the drying time of the non-woven cosmetic cotton in the oven is relatively short due to the linear movement of most of them;
    4. In the drying process, when the rotation of the back coiler and cloth guide roller is slightly out of sync, electrothermal The non-woven fabric in the oven will appear loose, which will affect the drying effect;

    5. The traditional drying method of cosmetic cotton is electric heating, which consumes a lot of electricity and heats up too fast, so it is impossible to accurately control the temperature, This program It has been more and more unsuitable for the needs of modern industrial production drying.


     Heat pump drying scheme of cosmetic cotton


    Characteristics of air energy cosmetic cotton dryer


    Zhengxu air energy heat pump dryer is a new type of high-efficiency energy-saving drying equipment. Its working principle is based on the principle of reverse Carnot cycle, using a small amount of electric energy, using the compressor to absorb a large amount of heat in the air. The working medium is evaporated into a gaseous state in the evaporator after passing through the expansion valve, and then the gaseous working medium is compressed into high-temperature and high-pressure gas by the compressor Enter the condenser to release heat to heat the drying medium, so as to continuously cycle heating. Compared with the electric dryer, it saves two-thirds of the electric energy.

            

    Cosmetic cotton is close to the skin of health products, for health standards are more strict. The heat pump dryer for cosmetic cotton adopts a closed, safe and non-toxic drying room, which can avoid the pollution of cosmetic cotton; secondly, it adopts the drying curve and moisture discharge curve unique to Zhengxu, accurately control the drying temperature, avoid incomplete and uneven drying, and reduce the moisture content of cosmetic cotton with the shortest time and maximum range. At the same time, the equipment has a high degree of automation and does not need to be supervised by a special person. The drying scheme of cosmetic cotton (including drying process) is completed by intelligent control, which saves time, mind and effort.


             Heat pump drying scheme of cosmetic cotton


    The drying of cosmetic cotton can be divided into four stages
    The first stage: select the heat pump drying mode, set the drying temperature of cosmetic cotton at 70 ℃ and the humidity of 35%, makeup cotton The drying time was 1 hour;
    The second stage: select heat pump drying + dehumidification mode, set makeup cotton The drying temperature was 70 ℃ and the humidity was 25%, makeup cotton The drying time is 1 hour;
    The third stage: select the dehumidification mode, set makeup cotton The drying temperature was 70 ℃ and the humidity was 15%, makeup cotton The drying time is 1 hour;
    The fourth stage: select the dehumidification mode, set makeup cotton The drying temperature is 70 ℃ and the humidity is 10%, makeup cotton Drying time is 1 hour.
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