Patent ID: 7481354
Filing Date: 2009-01-27
Classification: B65D

Abstract:
1. A packaging container, comprising: a pair of first opposing side plates; a pair of second opposing side plates, an inner surface of the pair of first opposing side plates and an inner surface of the pair of second opposing side plates surrounding a package space in a developed state; a pair of first bottom plate forming flaps for forming a bottom plate, each of the first bottom plate forming flaps being connected to a lower end of a respective one of the pair of first opposing side plates; and a pair of first top cover forming flaps for forming a top plate, each of the first top cover forming flaps being connected to an upper end of a respective one of the pair of first opposing side plates, wherein the first opposing side plates are each respectively provided with a longitudinal fold section thereacross so as to cross a substantially central part of the respective first opposing side plate, each of the respective longitudinal fold sections extending continuously across the respective first bottom plate forming flap and the respective first top cover forming flap, the first opposing side plates being folded at the longitudinal fold sections to place the packing container in a collapsed state, and wherein at least one of a second bottom plate forming flap and a second top cover forming flap which are respectively connected to a lower end and an upper end of at least one of the pair of second opposing side plates is provided with a lateral fold section which is substantially parallel to a connection line between the at least one second opposing side plate and the at least one flap, the lateral fold section defining a leading end part, and wherein, in the collapsed state, the leading end part, formed by folding the at least one of the second bottom plate forming flap and the second top cover forming flap at the lateral fold section, makes contact with and engages the inner surfaces of the folded opposing first opposing side plates to maintain the collapsed state.