| 摘要 |
A foldable box having four foldable exterior walls has at least one stable exterior wall having at least a first and a second spherical wall area convex with respect to an exterior side of the box. A bridge arranged at the outside of the exterior wall is arranged between the first and the second spherical surface and extends across the height of the exterior wall. At least one rib additionally extends from the bridge to the first and to the second spherical surface area. |
