Products arrive at air hubs and gateways in ULDs (uniform loading devices), of which there are many different types and shapes. Moving ULDs towards their unloading positions is mainly performed using a combination of tug and dolly trains, and manual transport on castor decks.
The most efficient and ergonomic way to unload a ULD is by using a small extendible conveyor for regular parcels. Depending on the application, bags with small items and flyers are loaded on an adjacent conveyor and connected to a direct fast line towards a dedicated smalls sorter. Irregular items are often unloaded on a third line or chute.
The design of the entire workstation also needs careful attention. For the continued performance of the unit, the overall configuration of all flows and functions must be overseen taking every detail of the required process into account.