Abstract: A single elongated piece of material has a major longitudinal dimension and is folded along plural fold lines extending transverse to the major longitudinal dimension, thereby forming plural wall sections and plural bottom sections. The plural bottom sections are overlapped to form a plural ply bottom of the container. The wall sections are lined with edges thereof being juxtaposed, and at least portions of the juxtaposed edges are joined to form corner edges of the container. Certain of the fold lines form an upper portion of the container. Longitudinally opposite free end edges of the piece of material are joined. The edges of the bottom sections which extend transverse to the fold lines are free and substantially unattached.

Abstract: A single piece of material is formed to have enclosing side walls, the bottom edges of which are cut to form at least four flaps which are direct extensions of the side walls. The lower edges of pairs of the flaps are joined to form joints which cross at a single point.