| 摘要 |
An insulating board on the basis of mineral wool bonded by a curable binding agent is characterised in that in between the mineral fibers of the minerals wool, non-metallic fibers (28) of a different kind are incorporated in at least one thickness area in an essentially homogeneous distribution, said fibers of a different kind having a greater average length and tensile strength than the mineral fibers of the mineral wool. The fibers (28) of a different kind are formed such as to be essentially rectilinear or have a large-radius curvature and are formed of portions of textile glass fibers separated at least in a high degree. Incorporation of these fibers (28) of a different kind having greater mechanical strength by bonding them inside the structure of the mineral wool by means of said binding agent surprisingly results in an increased resistance against pressure, notwithstanding the fact that all of the fibers are still largely aligned in parallel with the supporting surface. This improved resistance against pressure becomes particularly conspicuous at higher pressure loads bringing about deformations of the insulating board. In the method for producing such an insulating board, the mineral wool fibers are blended with the fibers (28) of a different kind, which are for at least the most part present as individual fibers, on their trajectory towards the reception means. |
