Abstract: The present invention furnishes a device for fiberizing molten mineral materials in order to produce mineral fiber products by means of a spinner (2) having a multiplicity of orifices (6; 8) provided in the peripheral wall (4) thereof, for centrifuging molten mineral materials (10; 12) supplied to the spinner (2), with the spinner (2) comprising on the inside (14) of the peripheral wall (4) compartments (18; 20) arranged in sections and delimited by baffles (16) for separately feeding and separately receiving a respective molten material (10; 12) to at least one associated orifice (6; 8), with the orifices (6; 8) extending at least approximately in a radial direction through the peripheral wall (4). In the present invention a method for producing this device is moreover proposed.

Abstract: The production of mineral fibers by centrifuging on rollers (3, 4, 5, 6) with horizontal axes from a stream (1) of molten material includes determining the relative position of the stream (1) of molten material in relation to the first roller (3), and controlling this position by use of CCD cameras (8, 11, 40). A camera (11) observes the periphery of a fiber-drawing roller (4).

Abstract: A method and apparatus for compressing and packaging compressible materials. The compression is carried out continuously between parallel plates which come closer to each other as they advance. As the plates advance, the materials are accompanied by a lower packaging film and an upper packaging film which are joined at the sides of the compressed materials at the end of compression.

Abstract: A ventilation duct includes an envelope lined on the inside by insulation panels. The panels have a lining on the side of the flow channel of the duct and on at least one part of at least one of transverse edges of the duct. This lining extends over at least one part of each of both sides of the edge and is integrated with the panel. Z shaped sections may be used to hold adjacent panels.

Abstract: The invention relates to a material based on inorganic fibres at least a proportion of which are multicomponent fibres and the cohesion and/or the geometry of which is (are) ensured, at least partially, by a sizing.It also relates to the use of this material for thermal and/or acoustic insulation.

Abstract: The invention relates to "two-component" inorganic fibers obtained by conjoint fiber formation from two different inorganic compositions, especially two glass compositions based on SiO.sub.2, alkali metal oxides and alkaline-earth metal oxides;the two inorganic compositions have thermal expansion coefficients .alpha. exhibiting a difference .DELTA..alpha. of at least 20.times.10.sup.7 K.sup.-1,they have a minimum viscosity temperature of fiber formation T.sub.log3 of between 830 and 1010.degree. C.,they exhibit a work range of at least 30.degree. C.,each includes, as weight percentages, in all less than 3% of the following compounds: TiO.sub.2, ZnO, BaO and Li.sub.2 O and preferably less than 1% of each of these,they exhibit, as weight percentages, differences in respective contents of boron oxides B.sub.2 O.sub.3 and of sodium oxide Na.sub.2 O such that:(i) .DELTA.B.sub.2 O.sub.3 >2%(ii) .DELTA.Na.sub.2 O>2%.

Abstract: The present invention furnishes a method for producing mineral wool wherein a molten mineral material is fed into a spinner (1) the peripheral wall (2) of which comprises a multiplicity of orifices with small diameters wherethrough the mineral molten material is centrifuged to form filaments which are subjected to a supplementary attenuating effect of a gas flow flowing along and heating the peripheral wall (2) of the spinner (1) and generated by a concentric annular burner (8) arranged concentrically to the spinner (1), and wherein the exit area of the burner (8) is subdivided into an annular radially inner hot zone and an annular radially outer cooling zone of substantially lower temperature; the invention moreover concerns an apparatus for implementing the method.

Abstract: A mineral wool article including a mineral wool layer, at least a region of which extends from at least one surface of the mineral wool layer into the mineral wool layer to an impregnation depth t. The region of the mineral wool layer includes individual fibers and is impregnated with an impregnating substance which adheres to the fibers and encloses the fibers without sealing gaps defined between the fibers so as to permit the surface of the mineral wool layer to retain an open surface structure. The gaps between the fibers in the region include bridge formations of the impregnating substance, which bridge formations are configured to permit air to penetrate through the mineral wool layer without essentially being impeded and to trap solid particles and thereby prevent emergence of the particles from the surface of the mineral wool layer. The impregnating substance provides the article with a soft and warm touch.

Abstract: To improve the reduction in tensile strength due to aging as well as the recovery, a weak acid is applied to a glass fiber mat containing a phenolic condensation resin binder before the binder is hardened.

Abstract: A shaping member for the finishing of junctions for "Climaver Plus" type glass wool piping comprising a unitary flat plate of bendable material which can be folded into sections to form a shape such that the shaping member can be placed at the junction of two glass wool elements.

Abstract: An apparatus for defibrating optically dense glass melts, such as a glass melt from basalt by the jet process, is proposed which is equipped with a feeding mechanism (1) for the melt and defibrating aggregates (2), the feeding mechanism (1) having a feed channel (3) and a subsequent distributing channel (4) with outlet ports (5) to the defibrating aggregates (2). To homogenize the glass temperature in the area before the defibrating aggregates (2) the feed channel (3) has on the bottom side at least in the area adjacent the distributing channel (4) a warming device (8) serving as a thermal barrier or active insulation and advantageously formed as an electric resistance heating device.

Abstract: The melting tub for producing the molten mass from a mixture of raw material is associated with an additional melting unit by means of which a recycled molten mass is obtained from mineral wool waste largely corresponding to the molten mass obtained from the mixture of raw materials in quality and composition. The recycled molten mass is supplied to the molten mass in the melting tub through a suitable introduction device. The recycling exhaust gas from the additional melting unit is fed to the tub exhaust gas, and the mixture of exhaust gas is utilised for pre-heating combustion air and mixture of raw materials.

Abstract: In order to be able to consolidate mineral fibers without binder, such as in particular glass wool into a needle-felt by needle-punching, an agent as a needling aid which comprises a thixotropizing additive having a relatively low flow viscosity during needling and thus allows to effectively support the needling process, is added to the mineral fibers. At rest, this thixotropizing additive however has an extremely high viscosity, whereby the needle-punched felt obtains good strength. In particular, for needling rock wool, suppler textile fibers are moreover added which contribute to improved mutual interlocking of the fibers, in particular in the case of mineral fibers such as basalt fibers, which can only with difficulty be interlocked by needling.

Abstract: A wall structure for interior sound and thermal insulation of rooms. The wall structure comprises at least one insulating member (26a, 26b, 26c) and fastening profiles (10, 28) consisting of metal. These are intended partly for the mutual affixing of members laterally, partly for affixing of each member to floor and ceiling. Especially, each member comprises a soft insulating sheet and a thereto fastened, rigid support sheet. The fastening profiles intended for affixing of the member to floor and ceiling are of L-type and the fastening profiles (28) intended for mutual affixing of members are of T-type. One portion of each L-profile is intended for installation to floor and ceiling respectively and the other for installation in an area between the insulating sheet of the member and its support sheet.

Abstract: A product made of bound mineral wool for the cultivation of plants, in which a reversibly water adsorbing agent insoluble in water is bound to the mineral wool, serves for the extensive grassing of soilless grounds, in particular the grassing of roofs. It contains, as a reversibly water adsorbing agent, in particular pyrogen silicic acid. Preferably, the product is available in the form of a felt or the form of a plate with a density of more than 50 kg/m.sup.3, particularly more than 70 kg/m.sup.3.

Abstract: Mineral material, particularly of the basalt type, is fiberized by internal centrifuging in a spinner having a peripheral wall with a plurality of orifices. A heated gas flow attenuates into fibers the filament cones emanating from the orifices. To produce mineral wool with good fiber fineness and largely free of unfiberized particles, the length of the filament cones and the configuration of the heated gas flows generated around the spinner are adjusted so that the majority of the filament cones emanating from the spinner orifices intersects the isotherm corresponding to a viscosity of 100 poises to enter into a zone cooled down to a temperature corresponding to a viscosity of more than 100 poises. The configuration of the heated gas flow is produced by an annular external burner in conjunction with an annular external blower that produces jets of cool air. The cool air brings low-temperature isotherms in close vicinity to the peripheral wall of the spinner.

Abstract: A support for a melting electrode used in a glass melting bath. The support includes concentric tubes which provide for the circulation of a cooling fluid within the support. A current is provided through the outer tube to the electrode. The surface of the outer tube is electrically insulated and may be protected by a second cooling system outside the electrical insulation.

Abstract: In a method and a system for installing loose insulation, loose wool is transported, in compacted state and packed in e.g. filled bags (12), to the site where the insulation operation is to be performed and where loose wool (11) received from the bags is mechanically fluffed, and where the fluffed loose wool is transported by blowing it through a hose (15) to the location where it is to be placed; and the loose wool supplied through the hose (15) is spread on said location in the desired configuration. The novelty of the invention resides in that the bags (12) containing loose wool first are so arranged as to be able, successively and in a controlled manner, to discharge the compacted loose wool contained therein for automatic fluffing and onward blowing through the hose, whereupon from the location where the spreading of loose wool takes place, the discharge of compacted loose wool from the bags is remote-controlled in connection with the spreading, whereby the method can be carried out by a single operator.

Abstract: A method for producing mineral wool of a material which is highly fluid at an elevated liquidus temperature in particular above 1,200.degree. C., with a viscosity of less than 5,000 poises at liquidus temperature, is proposed wherein the molten mineral material, after having destroyed all nuclei of crystallization, is supplied into a spinner (1') the peripheral wall (19) of which comprises a multiplicity of orifices with small diameters wherethrough said molten material is centrifuged to form filaments which, in a given case, are subjected to a supplementary attenuating effect of a preferably hot gas flow flowing along said peripheral wall (19) of said spinner (1') and generated by a concentric annular external burner (13). If fiberization of such a material is effected in the traditional way, a great proportion of unfiberized particles in the product will result.

Abstract: The present invention relates to mineral fiber compositions useful for forming fibers which are readily degraded in a physiological medium such as that found within the human body. Advantageous compositions formed according to the present invention comprise the following components in the proportions by weight set forth below:______________________________________ SiO.sub.2 37 to 58 wt. %; Al.sub.2 O.sub.3 4 to 14 wt. %; CaO 7 to 40 wt. %; MgO 4 to 16 wt. %; P.sub.2 O.sub.5 1 to 10 wt. %; Fe.sub.2 O.sub.3 up to about to 15 wt. %: ______________________________________wherein the amount of CaO+MgO+Fe.sub.2 O.sub.3 is greater than 25% and the total amount of Na.sub.2 O+K.sub.2 O is less than 7%. The total iron contained within the composition is expressed in the form of ferric oxide (Fe.sub.2 O.sub.3).