A collapsible box-like container or carton may be formed from a unitary foldable blank divided by fold lines into a bottom panel, a pair of side panels, a pair of end panels and corner sections. Each corner section may include triangular corner or pleat panels divided by a diagonal or oblique fold line. The triangular corner or pleat panels may be folded in intimate face-to-face contact on the outer surface of the adjacent end panels. Some of the triangular corner or pleat panels may be adhesively secured to the outer surface the adjacent end panel.