CORRUGATED CARDBOARD BOX MAKING DEVICE, BOX MAKING METHOD, AND BOX MAKING AND PROCESSING METHOD

A cardboard box production device includes: a stocker that holds a plurality of vertically stacked folded original boxes in a cardboard box having the top and bottom thereof open; a expansion provided upstream in a conveyance direction that is substantially orthogonal to the stacking direction of the original boxes, moving one side surface of an original box away from a first side on the stocker side towards a second side, and expanding the one side surface such that openings are formed at the top and bottom; a folding-in device that folds in the bottom of an open box opened upstream in the conveyance direction; a feeding device that feeds boxes from the upstream side in the conveyance direction to the downstream side; a conveyance belt; and an adhesion device that applies an adhesive tape to the bottom of the box in the conveyance area of the conveyance belt.