Securing container transports on the New Silk Road against moisture

Real-life tests carried out together with customers help us to determine the optimal use of our desiccants for the specific application. Recently, SeaDry container desiccants were used to protect sensitive goods from moisture during the transport of organic food in a 40-foot container on the New Silk Road to China.
Thematic image of containers being transported on a train

Challenge: extreme climate fluctuations on the 10,000 km long route

Unlike by sea, where the storage position determines how much the cargo is exposed to the elements, the conditions on rail are the same for all containers. The New Silk Road leads over 10,000 km not only across national borders but also through various climate zones. Extreme temperature fluctuations and the resulting sharp rise and fall in relative humidity favor the formation of condensation – and thus increase the risk of moisture damage.

Map view of the New Silk Road
Thanks to SeaDry, the relative humidity remains below critical values, and condensation does not occur.

Thematic image of an open container with cargo
The cargo is protected during transport not only by desiccants but also by dunnage bags.

Solution: Joint development of the desiccant concept

After analyzing the requirements, the responsible ThoMar product manager recommended the use of twenty SeaDry Hook desiccant chains 600 g. These should always be distributed as evenly as possible in the container and can be attached to the lashing rings using a sturdy hook. The required amount of desiccant was determined, on the one hand, by the expected day and night temperatures typical for the time of year (May / June) in the areas passed through. On the other hand, a safety buffer was to be built into the absorption capacity, as the transfer on the Silk Road can be significantly extended by regauging to other track widths as well as by waiting times in the customs area. It had to be ensured that the desiccants could keep the relative humidity at a non-critical level throughout the entire transport duration.

Result: SeaDry keeps your cargo dry

Thanks to the data logger used, temperature and relative humidity could be precisely tracked. The curves confirmed the precautionary measure of using desiccants during transport. The mold limit of 75% RH was never exceeded, and on average, the relative humidity was at an optimal 44.1%. The desiccant chains absorbed a total of 7.7 liters of water, approx. 60% of their own weight. Since the absorption capacity of SeaDry is at least 200%, there would have been sufficient reserves to secure a longer transport time if necessary.

Product image ThoMar Data Logger 10TH for measuring temperature and relative humidity, detail with temperature
  • Desiccant shop, Data loggers and indicators

Data Logger 10TH for Temperature and Humidity

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Application image ThoMar Container Desiccant Chains SeaDry Hook hanging in container
  • Desiccant shop, Container desiccants

SeaDry Hook Container Desiccant Chain Vertical

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