| 摘要 |
The sandwich panel comprises a layer of expanded material which is interposed between two metal sheets and is provided on one of its two longitudinal ends with a rib clad with the corresponding metal sheet and coverable by a bent projecting longitudinal edge of the metal sheet of the adjacent panel. The rib comprises, on that side facing the interior of the panel, a step (8) engageable by the correspondingly bent lip (27) of the projecting edge (7), which covers the rib (6). Moreover, the longitudinal edges of the two sheets (2, 3) are joined together by rigid sections (10, 11) which cover the side edges of the layer of expanded material (4). |
