Abstract: The invention relates to an apparatus for manufacturing mineral wool. The apparatus includes means (1) for producing molten mineral material, at least one fiberizing device (3) for forming fibres, into which fiberizing device the molten mineral material is fed (2) and by which fibres (12) are formed. The fiberizing device (3) comprises, rotationally arranged around a vertical axis (15), at least one fiberizing plate (13) having a vertical peripheral edge, into which are formed numerous small-sized holes (14), through which the molten material is led by centrifugal force to form fibres (12). Into the fiberizing device (3) are arranged elements to produce a vertical flow of blowing medium (16) to be led around the fiberizing plate (13), the flow causing the fibres (12) to turn downwards and, at the same time, to thin. Downstream the fiberizing device (3) is arranged a collection device (6), into which the formed fibres (12) are led and collected into a mat-like material.

Abstract: The invention is directed to a mineral wool insulation slab for facade renovations, comprising a rigid insulation slab or lamella having and outer and an inner side, wherein the outer side of the slab comprises an outer layered surface and the innerside of the slab is a mechanically and/or chemically softened layer of the one and same insulation slab. The invention is further directed to a method for manufacturing of such an insulation slab.

Abstract: Mineral wool pipe insulation, the mineral wool thereof includes a mix of mineral wool fibers and at least a curable binder being cured. The pipe insulation includes at least two separate elongated partial sections of mineral wool that are inter-connectable to each other around a pipe or container to form an insulation layer encompassing the pipe or container. Each separate partial section being inter-connectable by being provided with interconnecting means along at least two thickness-wise edges thereof. A method of manufacturing mineral wool pipe insulation includes forming each separate partial section of mineral wool by sawing or cutting from a cured block of mineral wool, or by curing a mixture of loose mineral wool fibers and a curable binder in a mold.

Abstract: The present invention is directed to a colloidal aqueous silicate dispersion containing silica and alumina, the molar ratio between silica and alumina being 2-12, as well as to a method for its preparation. Said method is characterized by dissolving a particulate mineral material, such as a mineral wool or fiber product containing silica and alumina in a molar ratio of 2-12 in an aqueous solution, nucleating and stabilizing the so obtained solution, and optionally adjusting the dry matter content of the dispersion so obtained. The said dispersion can also be made to gel. The invention is also directed to the use of the dispersion as a binder.

Abstract: The invention concerns a method for making a binder, especially for mineral wool products comprising the steps of dissolving a particulate mineral material having a glassy amnorphous structure in an aqueous solution, nucleating and stabilizing the so obtained solution to form a sol having the desired particle size, and optionally adjusting the dry matter content of the sol. The invention also concerns a method for the production of a mineral wool product using the said binder for binding the fibers.

Abstract: The invention relates to a method and an apparatus for joining surface layers and a core to form an element between two press platens, at least one of which is flexible and acted on by several power units that can be adjustable individually or in groups.

Abstract: A mineral fiber composition which is soluble in biological fluids contains substantially 45-65% by weight of SiO2 15-40% by weight of CaO 0-20% by weight of MgO 0-6% by weight of Na2O+K2O and in addition aluminium and/or iron oxides as well as phosphorus oxide in such amounts that the weight ratio of P2O5 to the sum of Al2O3 and iron oxide is circa 0.4 to 6.