It is most commonly used for regular slotted containers (RSC) and can involve adhesive (cold water-borne or hot melt adhesive), box sealing tape, or gummed (water activated) tape.
By contrast, a case erector is equipment for setting-up flat (knocked-down) corrugated boxes and applying a closure to the bottom flaps.
The operator closes the top flaps and feeds the box in or through a machine which automatically applies the closure.
This helps save time and controls the application of the closure materials such as box sealing tape.
Case sealers can also be categorized as either adjustable to fit production runs of a uniform box size or random, capable of handling a mixed variety of box sizes without machine adjustment.