Core material for building elements of sandwich type
AssigneeRockwool International A/S
InventorsJorgen Flemming Ravnkilde, Ivar Ostrup
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Abstract
Core material for use in building elements in which the interspace between the outer layers is filled up with a porous material comprising at least two layers which are interconnected on a minor part of their surfaces facing each other, preferably by glueing. According to the invention the core material consists of two layers of bonded mineral wool the surfaces of which are touching each other, the interconnection being along the edges. The core material reduces sound transmission without substantially reducing mechanical strength.
Claims1
In core material useful as filler material between outer boards in sandwich-type building elements for walling or bulkheads, said core material being used to fill interspace between the outer boards of said sandwich-type building elements, the improvement which comprises utilizing as the core material at least two separate layers of bonded mineral wool with surfaces that face and touch each other but are only connected to each other by gluing along edges of said surfaces wherein said separate layers of bonded mineral wool have different thicknesses.
Dependencies are inferred from the claim text.