Guidelines for Effective Edge Sealing Systems in Conveyor Operations
Careful consideration should be given when selecting an edge sealing system that fits within the available space between the belt's edge and the steel skirtboard. Sealing strips should not protrude beyond the belt's edge, as this can lead to damage to the seal or the belt if the belt mistracks. Typically, a minimum distance of 115 millimeters (4.5 inches) outside the skirtboard steel on each side of the loading zone is recommended to ensure an effective seal.
All skirt-sealing systems are susceptible to damage from a mistracking belt. If the belt shifts from under one side of the skirtboard, the unsupported sealing strip may hang down below the belt's path. When the belt returns to a centered position, the seal may rub against the moving belt's edge, potentially causing abrasion, or it may bend backward, risking tearing or wearing away. Both scenarios increase the risk of spillage significantly.
To prevent damage to edge seals, it is crucial to maintain adequate distance from the belt edge and to ensure proper belt tracking control.