Smarter Packaging & Materials Handing

Desiccants

Desiccants protect goods from costly damage by adsorbing excess moisture during shipping and storage.

What are they?

Desiccant Bags are essentially desiccants packaged in porous materials that allow them to effectively absorb moisture inside packaging or storage containers to protect any number of products, including semi-conductors, electronic devices, food, equipment, machinery, military goods, metal components and many other valuables.

Why use them?

Moisture can quickly affect the value or even destroy many types of valuable goods, causing rust, corrosion, mildew, mould and device malfunction. By sealing goods inside packaging with the appropriate Desiccant, goods can be protected from moisture and maintain long shelf lives.

Condensation in your container? What are the causes?

Containerised cargo can be subjected to significant temperature variations when stored on deck in the sun, whilst in storage awaiting trans shipment, or whilst crossing the equator. As the temperature in the container rises the enclosed air is able to absorb more moisture. There are many sources of moisture in a container – the wooden floor and pallets, packaging material and possibly the cargo itself.

Conversely, when there is a drop in temperature the air is not able to hold this extra moisture, which is then released in the form of condensation. The temperature at which this condensation takes place is called the dew point.

A typical cycle is;

  • As the temperature rises in a container, the enclosed air draws moisture from all possible sources inside the container, i.e. the wooden floor, pallets, product packaging and even the product itself.
  • Then as the temperature drops, i.e. during the night, during atmospheric changes, or when the ship moves into a colder climate, the moisture is released and condenses on the container’s roof and sides
  • The water that drips from the roof of the container (container rain), together with the condensation that forms on the product causes corrosion, mould, caking of powders, and damage to labels and packaging.
  • This process of warming and cooling repeats itself numerous times during a voyage, causing the damaging moisture cycle to repeat itself.
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