Conveyors are used when materials is usually to be moved frequently between particular points over a fixed path and when there exists a sufficient flow quantity to justify the fixed conveyor expense.[4] Various kinds of conveyors can be seen as a the type of product being taken care of: unit load or bulk 
load; the conveyor's area: in-floor, on-ground, or overhead, and whether loads can accumulate on the conveyor. Accumulation enables intermittent movement of each unit of material transported along the conveyor, while all devices move simultaneously on conveyors without accumulation capability.[5] For example, while both roller and planetary gearbox flat-belt are unit-load on-floor conveyors, the roller provides accumulation capability as the flat-belt will not; similarly, both power-and-free of charge and trolley are unit-load overhead conveyors, with the power-and-free designed to include an extra track to be able to provide the accumulation capability without the trolley conveyor. Types of bulk-handling conveyors include the magnetic-belt, troughed-belt, bucket, and screw conveyors. A sortation conveyor program can be used for merging, determining, inducting, and separating products to end up being conveyed to specific destinations, and typically consists of flat-belt, roller, and chute conveyor segments as well as various moveable hands and/or pop-up wheels and chains that deflect, push, or pull items to different destinations.[6]
