| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a packaging box capable of improving pressure resistance performance thereof while restraining manufacturing cost. <P>SOLUTION: This packaging box 1A includes a top plate 2, a bottom plate 3 and four side plates 4. The packaging box 1A includes: four reinforcing pieces 6 each extending at a height nearly identical to that of the side plate 4 from one-side end on a corner post 5 side of each one-side side plate (for instance, 4D) out of respective pairs of side plates (for instance, 4A, 4D) adjacent to each other by interposing each of corner posts 5 located on four corner sides of the top plate 2 and the bottom plate 3, to one side, and each formed by being folded inward at a predetermined angle by using the one-side end as a folding line; and four joining pieces 7 each extending from the opposite side of each folding line of the four reinforcing pieces 6, and each joined to the inner side of each other-side side plate (for instance, 4A) out of each pair of side plates 4. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
