Pre-glued tapered tray with gussets and flanges

A structure for forming a tray container comprising:

• a base panel and a top panel, each being generally rectangular and having four corners, said base panel and top panel lying parallel and opposed to each other;
• a pair of generally rectangular, opposed side panels connecting opposed edges of the base and top panels at fold lines to form a collapsible tube of generally rectangular cross-section with a pair of open ends when erected;
• a pair of generally rectangular, opposed end panels, one such end panel being connected at a fold line to an edge of said base panel at each of the open ends of said tube;
• a pair of gussets connected to each such end panel at fold lines, each of said pair of gussets also being connected at a fold line to the side panel adjacent said end panel to form a link between each said end panel and the adjacent side panel, each said gusset further having a fold line extending away from each corner of said base panel;
• and
• a lip flap connected to each said end panel at a fold line that is opposite the fold line connecting said end panel to said base panel, each said lip flap and at least one thickness of each gusset being gatherable upon folding of each end panel at its base panel fold line toward said top panel to form two end closures with outer and inner layers, each end closure extending between two corners of said top panel and having a top panel edge and the adjacent lip flap as its outer layers, with at least one thickness of each gusset being sandwiched between said top panel and said end panel lip flap as an inner layer at each corner of said top panel.