| 摘要 |
<p>A construction material having low weight and high strength comprising at least one stratum (5); each stratum (5) comprising joined, separate layers (1, 2, 3) of which at least one first layer (1) is corrugated and arranged between and fastened to a second (2) and a third (3) external layer at fastening zones (7, 8, 9) where the layers (1, 2, 3) are in touch. At least the first layer (1) is cross-corrugated in the regions between the fastening zones (7, 8, 9). The invention also relates to a method for manufacturing the construction material and also a shaped product comprising two or more layers of the construction material, and where each layer may have a different geometric shape.</p> |
