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Rockwool International A/s

Deutsche Rockwool Mineralwoll Gmbh & Co. Ohg

Fleck Gmbh

Peter Nowack

Gerd-Rüdiger Klose

Arkadiusz Szakola

A longitudinal sandwich element including 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 major surfaces substantially parallel to each other, and two end surfaces substantially perpendicular to the major surfaces and parallel to each other and two side surfaces interconnecting the major surfaces and the end surfaces, where the mineral wool fibers are mainly perpendicular to the major surfaces, and at least one sheet is attached to at least one of the major sides of the core, and at least one of the two side surfaces is provided by one or more side lamellae, and where at least one of the side surfaces has been formed as a cut section into the one or more side lamella(s), the cut section fitting 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 in the region with the higher density.

Sandwich element

The invention relates to a building element for erecting internal walls, outer walls and or ceilings or roofs, preferably flat or slightly slanted roofs of a building, consisting of an insulating layer forming an insulating core made of mineral fibers bound by a binding agent, especially rock wool fibers and/or glass wool fibers bound with a synthetic resin, and at least one preferably metal covering layer which is disposed on a large surface of the insulating layer. An adhesive layer is placed between the covering layer and the insulating layer and used to glue the covering layer to the insulating layer. In order to further develop said type of building element so that it is easy to handle when said building elements are manufactured at the end of a continuous manufacturing process, while at the same time provided high protection against fire so that the building elements can also be used for roofs with larger angles of inclination, the layer () consists of a first quick binding adhesive and a second adhesive which is effective during the direct effect of fire at temperatures of up to and exceeding 1,0000&#xb0; C., said adhesives arranged in separate areas () of the layer ().

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Gelsenkirchen, Germany

Peter Nowack