Abstract: A die cut and scored carton blank is formed into a carton. The carton blank is placed in a trough having a side wall and at least one retractable stop for turning upwardly elongate edge flaps of the carton blank, with the trough having two end walls for turning up end flaps of the carton blank. The partially-formed carton is then moved to a second position where it is lowered and horizontal glue strips are applied to an outer surface of an elongate edge flap. As the carton is moved toward the second position, glue strips are applied to end flaps of the carton blank. The partially-formed carton is then moved to an upper position, above the level of the trough, and into a compression chamber where side walls and end walls hold the flaps together until the glue hardens.