| 摘要 |
PURPOSE: A foldable packaging box having improved intensity is provided to enable users to check contents inside the packaging box in the stacked condition. CONSTITUTION: A foldable packaging box includes a pair of long side plates(3), a pair of short side plates(5), a base plate(7), and an upper frame(11). The upper frame has a rectangular shape having the same width with the base plate, and is connected to the upper sides of the long side plates and the short side plates. The short side plates rotate using the upper side or the lower sides as a first hinge shaft, and are located in parallel with the base plate. The is formed with more than first and second unit long side boards(3a, 3b) including a horizontal folding line. A guide rail(19) is vertically installed on the outer surface of the first and second unit long side boards.
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