| 摘要 |
<p>The method comprises: stacking different layers of a sandwich structure (1) on a mold (4), where the structure comprises a central core (3) or cellular foam, and the core is pre-impregnated with a resin material; and covering the sandwich structure by a layer of a material suitable to allow a uniform vacuum evacuation of the water produced during the polymerization step of the resin. The material layer is arranged on the side of the sandwich structure. The whole structure is covered with a cover capable of enabling the vacuum so as to keep the sandwich structure under pressure. The method comprises: stacking different layers of a sandwich structure (1) on a mold (4), where the structure comprises a central core (3) or cellular foam, and the core is pre-impregnated with a resin material; and covering the sandwich structure by a layer of a material suitable to allow a uniform vacuum evacuation of the water produced during the polymerization step of the resin. The material layer is arranged on the side of the sandwich structure. The whole structure is covered with a cover capable of enabling the vacuum so as to keep the sandwich structure under pressure. The polymerization step is carried out to obtain the sandwich panel. A set of transverse grooves (5) and/or a set of longitudinal grooves are formed at a face of the central core on the side of the mold. The grooves form a grid of the central core of the sandwich structure. An independent claim is included for a sandwich panel.</p> |
