| 摘要 |
A collapsible box, made from a blank of impermeable material, includes a bottom (F), head panels (T1, T2) and reinforcing tabs (X1, X2) of the head panels, with longitudinal folding lines lying in a box longitudinal symmetry plane. Straight and inclined folding lines extend from the symmetry plane and across the head panels. The folding lines allow the bottom (F), the head panels and tabs to fold inwards in the box until the box is collapsed.
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