Abstract: An assembled and folded blank for a bulk container with at least one cell has partial bellows corners formed at two adjacent bottom corners by three bottom panels hinged on three adjacent walls, and has a fourth bottom panel hinged on the bottom edge of the wall between the other two corners of the cell. The fourth bottom panel is free of the other three bottom panels which have two side bottom panels hinged on an end bottom panel thereof. The two side bottom panels each have a cut and a partial diagonal score line defining partial bellow corners at two bottom corners of the container. The blank is folded flat by having the walls folded together about two diagonally opposite corners thereof.

Abstract: A two-cell bulk container has partial bellows corners formed at the outside or end bottom corners of each cell of the container with free center bottom panels on the bottom of the center wall of the panels on the bottom of the center wall of the container being gripped within the folds of the partial bellows corners to reinforce the container.

Abstract: A bulk container with at least one cell has partial bellows corners formed at two adjacent bottom corners by three bottom panels hinged on three adjacent walls, and has a fourth bottom panel hinged on the bottom edge of the wall between the other two corners of the cell free of the three bottom panels and sandwiched between the intermediate panel of the three bottom panels and fold-in portions defined by partial diagonal score lines and cuts in the two side bottom panels of the three bottom panels.

Abstract: Outside flaps, on each of two cells having adjoining wall panels secured together are secured to respective wall panels of the opposite cell to form a bridge across the respective opposite sides of the adjoining wall panels.