Why do container desiccant cargoes get damp

Release time:

2021-01-20

The container desiccant has been used in the shipping container all year round to absorb and ensure the dryness in the container. Of course, it will inevitably get damp when it is used or during transportation. Let me introduce you to it. s reason:
   1. The moisture in the container mainly comes from the moisture in the air itself, the cargo itself, packaging materials, pallets, wooden floors of the container, and container leakage.
   2. Check the moisture level of the wooden floor in the container. If possible, do not use a container with a moisture value of more than 20%, which will increase the risk of moisture.
  3. In the ocean environment, the container is like a big steamer. When sealed, the temperature in the container is more than 10 degrees higher than the outside temperature. The temperature and humidity of the ocean changes drastically during the day and night.
  4. Do not use containers that have just been washed and hot and humid. Use dry ones. All pallets and other wood products used must be dry and the relative humidity should not exceed 12%. You can use a humidity test portable device to test the moisture content of the packaging materials.
   5. According to regulations, the main component of container wood flooring is cork, which has a high moisture content and the moisture cannot exceed 14%. In fact, the average moisture content of containers still in use in many ports is 18%, even more than 25%.
   6. When a container enters a low temperature area from a high temperature area, the internal ambient temperature changes from high temperature to low temperature to reach the dew point temperature. Water vapor will condense into water droplets, which will condense on the top and surrounding inner walls of the container and drip onto the cargo.
7. When goods are transported from a low temperature area to a high temperature area or the storage environment of the goods suddenly changes from cold to hot, the moisture in the pallets, wooden boxes, etc. will also evaporate, and the moisture in the air will be on the surface of the goods or on the packaging. When condensation forms water, the cargo itself will also emit water.
Container desiccant is used to adsorb containers during ocean transportation or storage. In many cases, moisture will often appear. Therefore, in order to prevent moisture damage during transportation, we must take moisture-proof measures. If it cannot be changed, to ensure Cargo safety.

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