| 摘要 |
<p>Doorleaf element (1) for a doorleaf preferably consisting of a large number of such elements, for example a covering-segment doorleaf, having a hollow space between mutually enclosing outer layers (2, 2'), in particular of sheet metal (2, 2'), and a core (4) made of plastic, in particular plastic foam, which fills the hollow space. For the purpose of achieving a lighter weight, the element is provided with a plastic-fibre layer (3, 3') on each of its outer-layer surfaces facing the core. …<IMAGE>… </p> |
