Absorption Limit
Moisture management in sealed shipping containers relies on sacrificial drying agents to protect export-grade linen fabric from mildew. The desiccant saturation threshold defines the point where the chemical medium can no longer hold additional water vapor. This boundary depends on both ambient relative humidity and the specific salt or gel compound used in the protective satchels.
Condensation Risk
When export containers experience large temperature drops during maritime transit, the relative humidity inside rises quickly. If the desiccant saturation threshold is breached during these transitions, excess moisture condenses directly onto the protective plastic wrapping of the fabric rolls. Water droplets can then seep through imperfect seals, leading to localized staining or mold on the woven linen.
This process occurs because the cold container walls cause rapid temperature shifts that exceed the dew point of the internal air, releasing liquid water that immediately compromises the quality of the packed goods.
Testing Routine
Inspectors at the shipping dock measure the mass of test satchels retrieved from dummy packages. The measured weights are logged in the pre-shipment quality report to confirm that the drying agent retains at least forty percent of its initial absorption capacity. This ensures the cargo arrives at the destination port without moisture damage.
