| 摘要 |
<p>A composite panel for forming sectional doors, comprising two sheet metal supports (4, 6) bounding a layer (8) of synthetic thermoinsulating material, in which the two supports are bent over along their edges to form the two parts of the articulation joint, the outer support (4) has one edge bent over towards the panel interior and extending in the direction of the panel thickness, and has its other edge bent over towards the panel interior and extending in the direction of the panel thickness, the inner support (6) has one edge forming a first continuous longitudinal rib (24), and has its other edge forming a second continuous longitudinal rib, the distance between the edge of said first continuous longitudinal rib (24) and the base of the second continuous longitudinal rib (28) of the adjacent panel is not less than a predetermined safety value when the two panels are coplanar. <IMAGE></p> |
