| 摘要 |
The invention concerns a longitudinal sandwich element comprising a core of binder fixed mineral wool lamellae assembled in a side by side relationship extending in the longitudinal direction of the sandwich element the core having two front surfaces substantially parallel to each other, and two end surfaces substantially perpendicular to the front surfaces and parallel to each other and two side surfaces interconnecting the front surfaces and the end surfaces, where the mineral wool fibres are mainly perpendicular to the front surfaces, and at least one sheet is attached to at least one of the front sides of the core, and each of the two side surfaces is provided by side lamellae of mineral wool assembled with the end lamellae of the core by a binder, and where at least one of the side surfaces has been formed as a cut section into the one or more side lamella(s) said cut section being capable to fit into a mating cut section of one or more other side lamella(s) of an adjacent sandwich element, and where each side lamella has a varying density and the cut section is formed by the region which has the higher density for preventing crevices formation and deformation of cut sections during their manufacturing and for preventing building-up of thermal bridges in the region of joint profiles of the adjacent sandwich elements during operation with assemblies composed from the sandwich elements, and where the lamellae in the core are having a substantially homogenous density. |
