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A box-like container of corrugated plastic web having a pair of side walls and end walls is provided. The first side wall has a fold with a rectangular flap hingeably mounted thereto; each end wall has a hingeably mounted end flap having a slant edge terminating in an off-center blunt apex. The othe

A box-like container of corrugated plastic web having a pair of side walls and end walls is provided. The first side wall has a fold with a rectangular flap hingeably mounted thereto; each end wall has a hingeably mounted end flap having a slant edge terminating in an off-center blunt apex. The other side wall has a hingeably mounted triangular flap which terminates in a blunt substantially central apex. Accordingly, the first side flap is foldable toward the container and the end flaps are foldable thereover to define a substantially central slot with the first side flap and the (second side) triangular flap is foldable over the other flaps with the central apex being insertable into the slot to interleave the other flaps in an interlocking configuration. In one embodiment the container has top flaps and similar bottom flaps mounted to the container walls, which flaps are recloseable to form a closed container and openable to permit the container to be compressed into lay-flat form. In another embodiment the container has such closeable flaps mounted on one end of the side walls and is open at the other end of the side walls to form when the flaps are closed, container halves for use separately or in combination with another container half to form a telescoping, closeable container.

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A container of corrugated plastic web having an opposed pair of side walls joined by a pair of end walls, the first side wall having a first side flap hingeably mounted thereto, which flap has an outside edge that is free of slots or projections for greater strength and durability so as to reduce st

A container of corrugated plastic web having an opposed pair of side walls joined by a pair of end walls, the first side wall having a first side flap hingeably mounted thereto, which flap has an outside edge that is free of slots or projections for greater strength and durability so as to reduce stress concentration and damage when said flap is opened or closed, each end wall having a hingeably mounted end flap having a slant-edge terminating in an off-center blunt apex and the other side wall having a hingeably mounted second side, triangular flap terminating in a blunt substantially central apex such that said first side flap is foldable toward said container and said end flaps are foldable thereover to define a substantially central slot with said first side flap and said second side flap is foldable over said other flaps, with said central apex being insertable into said slot to interleave said other flaps in an interlocking configuration.