| 摘要 |
PROBLEM TO BE SOLVED: To keep a box shape in a box-shaped assembled condition and to prevent a side panel from warping downward in a flatly folded condition. SOLUTION: An interval maintaining protrusion 13 is protrusively provided on a side panel 1 for maintaining an interval with a facing side panel 1 in the folded condition of this synthetic resin folding box 7 near the side panel connecting hinge 2 of at least one side panel 1 of the side panels 1 neighboring through the hinge 2 on a pair of opposing corners which are folded obtusely when the folding box 7 is folded roughly in parallelogram. The protrusion 13 maintains the angle formed by side panels 1 neighboring through the hinge 2 not to be smaller than 90°when it is assembled in a box shape. COPYRIGHT: (C)2008,JPO&INPIT
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