| 摘要 |
<p>The packing box is characterized in that the tabs coinciding with the common edges of the sidewalls comprise a device having opposite recess and projecting elements on each pair of opposite tabs, which can be inserted into each other for retaining each pair of sidewalls that define two adjacent faces of said box. The invention is further characterized in that the flange angles adopt a dihedral structure having long back wings in the edges on the faces of the dihedron, which face inward, thereby defining a groove for inserting the coinciding tabs of each edge.</p> |
