Folding and interlock structures for reusable and collapsible boxes

Abstract

Plastic corrugated reusable boxes are provided. Two opposite side panels 12 erected from a blank over fold lines 18 at bottom panel edges; said side panel 12 having flaps 20 attached on either side folded inward and interlocked with flaps 22 folded inward from the opposite side. Narrow flaps 32 attached to top edges of said side panels 12 folded inward and flat. The rest two opposite side panels 14 erected over fold lines at rest bottom panel edges; top flaps 30 attached to the rest two side panels 14 folded inward covering the top surface. Interlocked flaps 20 and 22 are standing underneath top flaps 30 and alongside two opposite side panels 14. Lock tabs 40 attached to top flaps 20 folded down and inserted into said lock slots embedded in narrow flaps 22 alongside side panels 12 top edges.

Dependencies are inferred from the claim text.