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Glue case erectors fold the two bottom minor flaps of an case blank, then apply glue to both of the minor flaps and fold over the major flaps. The formed case is then held for a short time to ensure that the glue dries and hardens, providing a strong seal. Glue sealing of cases can also mean less change outs when compared to tape, saving time during production runs. A glue bottom seal case erector can use either cold or hot melt glue.