| 摘要 |
A preferably one-piece fold-and-glue container has corners reinforced by extensions that fold over and compress self-erecting bellows or gusset corner joints, and cutouts in each of the four front, back and end walls. The corrugated paperboard panels of a single flat blank define a bottom, opposite front and back walls and longitudinally opposite end walls. The joints have bellows panels integral with the front, back and end walls, joined at folds oriented diagonally and being glued to one of the adjacent walls to pull one another perpendicular to the bottom when erected. The end walls have an outer end wall panel integrally extending from the bottom and joined adjacent to the front or back to an extension having a protruding tab at its free end for locking into the bottom when the extension is folded over the gusset joint. The cutout in each wall is spaced inwardly from opposite ends and extends only part way from a top edge to the bottom, leaving a lower wall portion adjacent to the bottom at which the material is doubled over and also locked to the bottom. Adjacent to the junction between the extension and the outer end wall, a registration tab is cut in the extension to register with a corresponding opening in the bottom of a container stacked on the container. The extensions can have two or more thicknesses of material folded laterally inward and glued against one another for added reinforcement.
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