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A single fold collapsible container includes a peripheral side wall extending upwardly from a bottom wall, and terminating at an upper open end. The side wall has upper and lower portions separated by a peripheral fold line having a sideways S-shaped geometry such that the upper and lower portions a

A single fold collapsible container includes a peripheral side wall extending upwardly from a bottom wall, and terminating at an upper open end. The side wall has upper and lower portions separated by a peripheral fold line having a sideways S-shaped geometry such that the upper and lower portions are movable relative to one another between extended and collapsed positions. The one portion which is reverse foldable into the other portion has a thickness significantly less than the other portion.

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[ What is claimed is:] [1.] A single fold collapsible container comprising:a peripheral side wall extending upwardly from a bottom wall, and terminating at an upper open end; said side wall having upper and lower portions separated by a peripheral fold line having a sideways S-shaped geometry such t

[ What is claimed is:] [1.] A single fold collapsible container comprising:a peripheral side wall extending upwardly from a bottom wall, and terminating at an upper open end; said side wall having upper and lower portions separated by a peripheral fold line having a sideways S-shaped geometry such that said upper and lower portions are movable relative to one another between extended and collapsed positions; and wherein one of said upper and lower portions has a wall thickness less than the other of said upper and lower portions; wherein said upper portion is thinner than said lower portion and collapsible into said lower portion by a reverse folding action, such that said upper open end is adjacent said bottom wall in said collapsed position; and wherein an uppermost edge of said lower portion extends above a lowermost edge of said upper portion when the container is in the extended position.