Patent ID: 6227442
Filing Date: 2001-05-08
Classification: B65D

Abstract:
A container with an integral reinforcing flange to resist bulging of the container side walls under the pressure of the contents of the container, comprising:opposed side walls having upper and lower ends and joined along adjacent longitudinal sides to form an open-ended enclosure;at least one of the upper and lower ends having a flange on each of the side walls, said flanges having a tubular cross-sectional configuration and extending across the width of the respective side walls into abutting, interlocking relationship with one another at adjoining ends;said flanges each having a plurality of foldably connected panels, including a first panel joined to an adjacent edge of a respective side wall and folded to lie substantially coplanar with the end of the container, and a second panel extending inwardly of the container from an inner marginal edge of the first panel; andat least one of the panels in each flange having projections and recesses formed in its opposite ends, the projections on the end of a panel in one flange engaging in the recesses in the adjacent end of a panel in an adjacent flange, whereby adjacent ends of adjacent flanges have interfitting projections and recesses to hold the flanges in their erected condition.