In many manufacturing sectors and the production process, humidity control is crucial, deciding on the final outcome. Or the failure of a stage in the production process affected by moisture is also important. Within this article, we just outlined a number of manufacturing areas in which the humidity factor is decisive to the outcome:

 1. Food production

Dried foods such as chips, dried cereals, cakes with soda ingredients, etc… Manufactured at high temperatures to completely remove water in raw materials. However, if these foods come into contact with the external environment with high humidity, although only for a short time, they will absorb the water from the air, as their quality decreases, softens and the duration of use is also significantly reduced due to exposure to moisture after processing.

Powdered foods such as cocoa, gelatin, concentrates,… Processed using dry air, the presence of steam (moist air) around can cause small particle results of powders or adhesions together into cakes, which in turn will cause difficulties in production. The production equipment is also influenced by the humidity in the air impacts, hinders operation and the movement of raw materials in the production process.

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Moisture has a great influence in the production, operation and quality of food. Therefore, it is necessary to ensure the air humidity in the area of production, processing and preservation at the appropriate level of stability.

  2. Pharmaceutical Manufacturing

In order to meet the increasing technical requirements, the pharmaceutical industry has focused on the issue of controlling humidity in pharmaceutical and micronutrient manufacturing in a strict way. In particular, moisture will be controlled at a certain level in the area of production/drug regulation to ensure the stability of certain physical/chemical properties in the composition of the drug. In the production of some special drugs, the control to not have humidity in the air is extremely important.

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Just like food, many raw materials are used for the production of pharmaceuticals and micronutrients that are highly hygroscopic (also known as hygroscopic materials). This can cause adhesions or physical deformation of raw materials compared to the requirements. Conventional powder medications when closing capsules or forming tablets under high pressure are performed only when in a dry state. Moisture can cause the tablet to be “swollen”, in some cases it can make the drug decomposition and reduce its therapeutic value. To ensure the highest quality drug, the manufacturing/brewing area and machines must be surrounded by air with a low/dry humidity and are precisely controlled, independent of temperature.

   3. Industrial chemicals Manufacturing

In the manufacture of industrial chemicals, a number of chemicals are decomposition when there is steam. There are cases where, steam can cause a chemical reaction that changes the characteristics of the product. Air humidity is also a natural enemy for grinding phase, powder making. Steam in contact with the material can make it “durable” and hard to grind, making it cling to the mill, difficult to move to another process.

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   4. Warehouse Preservation

Mold, rust, corrosion are the enemies of goods stored in stock, however, they will no longer be the threat when the moisture is reduced and controlled in the storage area.

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If the air has a humidity of less than 40%, will cause the decomposition process not to work. In particular, maintaining hibernation is also important in seed preservation. For example, if the corn grain preserved in the natural environment has humidity temperature, humidity is not controlled, the germination rate is 7%. With seeds stored in a controlled environment: the germination rate can be up to 90%.

   5. Humidity control in food packaging

Typically, the equipment used for packing the product will not work efficiently in a damp environment. The cake packing machine, candy; Powder or packaged food packaging machines are typical examples.

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High humidity will cause many problems in the production of mixed raw materials, not only mixed raw material powder does not “flow” properly that the packaging equipment is also hampered by moisture. Depending on the product, it may be necessary to dry the packaging and even have to provide a dry “bath” tub for the container or discharge, especially where the powder is used. In the case of closed-loop packaging with temperature, the steam content exists will adversely affect the interconnection of the material being used. At that time, the cause is not derived from the product or machinery, which the culprido is the moisture of the packaging. Keeping the air dry environment is the only solution.

   6. Condensation phenomenon

Moisture condensation on the equipment, the instrument will be detrigent to the production and operation of machinery and equipment; Especially on moving parts.

For example, when the device is being cooled in polymer casting operation. The mold is cooled artificial so the moist air that surrounds them will condense, causing the dew fog and this needs to be eliminated.

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Another example is the water pump station with multiple valves, accessories, and other parts that can become rust-free because the temperature difference leads to frost phenomenon. To avoid rust, it is necessary to repaint, replace, and scrub regularly. However, valves and other accessories that are not insulated will have constant maintenance. The optimal solution in this case is to keep the air dry in the pumping station and the conduit cavity for insulation and reduce the amount of condensate.

   7. Material Storage with hygroscopic properties

High hygroscopic materials such as rubber, plastics,,… Will cause difficulties during production. If these materials are preserved in a high humidity environment, they will absorb moisture in the air, forming airbags, making these materials deformed, changing properties and cannot be used.

Ensuring that dry air in the storage and production areas will help to protect these materials from moisture.