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| Number | Title | Issue Date |
| 8127574 | Method for producing mineral wool The invention relates to a method for producing mineral wool, wherein a mineral base material is melted in a cupola furnace having a shaft to hold the base material, the lower section of said shaft being provided with a grate, and beneath said grate there is a combu... | 03/06/2012 |
| 7530240 | Method for producing high-silicate inorganic fibers of rocks The present inventions relate to the means of production of high-silicate inorganic fibers of natural acidic rock minerals and also to products manufactured of said fibers, namely: continuous, staple fibers and scaly particles. In each variant of the M dacite or rhy... | 05/12/2009 |
| 7194874 | Screen for fiberizing bushings and method A bushing for fiberizing molten material, such as molten glass, having a screen mounted in the bushing spaced above the tip or orifice plate with a central portion of the screen having a significantly lower percent of hole area than the percent of hole area in end p... | 03/27/2007 |
| 7194875 | Fiberizing bushing with improved screen A bushing for fiberizing molten material, such as molten glass, having a screen mounted in the bushing spaced above the tip or orifice plate with a central portion of the screen having a significantly lower percent of hole area than the percent of hole area in end p... | 03/27/2007 |
| 7185516 | Washwater neutralization system for glass forming line A neutralization system for controlling the pH of the washwater used to clean and maintain polyacrylic bound glass forming equipment. The neutralization system introduces a base solution to a washwater solution when the pH of the washwater solution contained in a cl... | 03/06/2007 |
| 7073353 | Production of mineral wool The invention relates to a method for producing mineral wool, whereby a cracking catalyst having an aluminum oxide content of at least 35% by weight is used as a base material or aggregate. Said catalyst materials produce waste products which are difficult to elimin... | 07/11/2006 |
| 6381987 | Process for making opaque quartz glass and opaque component made according to the process Based on a known process for the manufacture of opaque quartz glass, by mixing SiO2 particles and an additive which is volatile at a melting temperature, forming a body and melting said body with an advancing melt front forming in the body, it ... | 05/07/2002 |
| 6272887 | Bushing tip plate support assembly for a bushing in a filament forming apparatus A bushing tip plate support assembly for a bushing in a filament forming apparatus is disclosed. The support assembly improves the flatness of the tip section within the spans between the external support and the center support. The filament forming appar... | 08/14/2001 |
| 6133177 | Process for removing organic impurities while melting mineral compositions A process for the preparation of molten mineral compositions wherein organic impurities are removed by reaction with oxygen introduced via the decomposition of calcium peroxide.... | 10/17/2000 |
| 6125660 | Method for manufacturing mineral fibres The invention relates to a process for the manufacture of, in particular, continuous mineral fibers from rock, glass-containing technical wastes, technical glass wastes, and to an apparatus. The object of the invention is to create a process which enables... | 10/03/2000 |
| 6065310 | High throughput glass fiberizing system and process This invention relates to a high throughput glass fiber production system and process to provide optimum glass delivery to the glass fiberizing bushing and enhanced glass production of textile fibers or filaments of glass. The fiberizing system includes d... | 05/23/2000 |
| 5974837 | Method for coating fibers In the process of drawing optical fibers, a protective plastic coating is applied to the fiber by applying a curable liquid coating material thereto and the subsequently curing the liquid coating to a protective plastic layer. At high fiber draw speeds, a... | 11/02/1999 |
| 5766291 | Method for producing heat-resistant synthetic quartz glass A porous silica body with a density of 0.1 g/cm3 to 0.5 g/cm3 and a density variation of less than 30% is subjected to a first heat-treatment in an ammonia-containing atmosphere, a second heat-sintering in non-oxidizing atmosphere, a... | 06/16/1998 |
| 5743933 | Apparatus and method for defibrating optically dense glass melts 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 ... | 04/28/1998 |
| 5529594 | Method for producing mineral fibers having gaseous occlusions The mineral fiber forming apparatus having electrodes for heating heat softenable mineral material to form a molten mineral mass is disclosed. Organically-coated glass fiber scrap and cullet are supplied to the vessel providing the heat softenable mineral... | 06/25/1996 |
| 5420082 | Process of production of a glass intended to be transformed into continuous or staple fibers The invention provides a process which makes it possible to regulate the degree of oxidation-reduction of a glass during its production. According to the invention, which relates to glasses intended to be transformed into continuous or staple fibers conta... | 05/30/1995 |
| 5364426 | High shear mixer and glass melting method A glass melter 30 having a mixing impeller 34 for converting a feed stream 38 supplied to a vessel 32 into a vitrified glass melt 50. Heating means such as electrodes 36 or a gas burner 58 are used to heat the glass melt 50. Electrode 36 arrangements are ... | 11/15/1994 |
| 5352258 | Production of glass fibers from scrap glass fibers The process and apparatus of the present invention enable the production of glass fiber product from scrap glass fibers. The process includes: feeding the scrap glass fibers having an average length up to around 12 inches to a glass melting tank having a ... | 10/04/1994 |
| 5019171 | Reclaiming inorganic reinforcement component from organic resin-containing scrap materials An inorganic reinforcement component, such as fiberglass, is reclaimed from a scrap material including a vaporizable organic resin, such as epoxy, by heating the scrap material in an elongated, rotary furnace to a temperature above the vaporization point ... | 05/28/1991 |
| 4929264 | Apparatus for reducing optical-fiber attenuation A silica glass optical fiber is subjected to an external strain which causes vitreous matrix atoms to stabilize in a lower energy condition. In this way inhomogeneity domain sizes and as a consequence the attenuation due to Rayleigh scattering, depending ... | 05/29/1990 |
| 4720295 | Controlled process for making a chemically homogeneous melt for producing mineral wool insulation A process for making a homogeneous melt for producing mineral wool insulation. This insulating material is made from waste products namely, bottom ash, cement kiln dust, slag, and waste from mineral wool production. These materials, along with a binder, a... | 01/19/1988 |
| 4643750 | Method and apparatus for producing glass fibers This invention pertains to a method and apparatus for forming glass fibers by flowing fine streams of glass from closely spaced orifices in a feeder plate while directing a cooling gas upwardly to promote separation of the streams of glass and eliminate t... | 02/17/1987 |
| 4617045 | Controlled process for making a chemically homogeneous melt for producing mineral wool insulation A process for making a homogeneous melt for producing mineral wool insulation. This insulating material is made from waste products namely, bottom ash, cement kiln dust, slag, and waste from mineral wool production. These materials, along with a binder, a... | 10/14/1986 |
| 4537609 | Stone trap and method of using for making glass fibers Fiber glass forming bushings are described which contain baffle arrangements which are positioned below the bushing flange and direct glass flows inside the bushing to trap stones in the molten glass. The baffles are arranged to divert glass entering the ... | 08/27/1985 |
| 4528013 | Melting furnaces A melting furnace is disclosed which heats by joule effect to supply molten material of uniform temperature at the floor of the melter. During formation of molten material, an essentially isothermal condition across a given horizontal plane of the body of... | 07/09/1985 |
| 4454238 | Manufacture of continuous glass filaments and compositions therefor A glass composition which can be drawn into continuous filaments at a temperature of 1050° C. or below, without risk of devitrification (crystallization), comprises by weight: and has a 1000-poise viscosity temperature not greater than 1050° C. and a li... | 06/12/1984 |
| 4421538 | Device for the manufacture of glass filaments A forehearth supplied with molten glass from a tank furnace, with bottom passages overlying bushings for the extrusion of vitreous filaments, forms an elongate chamber whose sidewalls are penetrated by heating electrodes spaced apart in the longitudinal d... | 12/20/1983 |
| 4416678 | Method and apparatus for making glass filament or fibers A forechamber or reservoir to which molten glass is fed, is provided with burners for heating the surface of the glass mass. The molten glass is conducted from the forechamber via at least one opening in its bottom wall into a vertically disposed intermed... | 11/22/1983 |
| 4365984 | Mineral wool and process for producing same A process for producing mineral wool having a chemical composition comprised of between about 50 and 70 weight percent silica plus alumina, about 20 and 35 weight percent lime plug magnesia and about 5 and 15 weight percent iron oxides is described. The p... | 12/28/1982 |
| 4337073 | Rotary forehearth A rotary forehearth for use particularly in formation of glass fiber filaments through bushings is disclosed. A stator portion of the forehearth carries the bushings and a rotor portion of the forehearth receives molten glass from a suitable supply source... | 06/29/1982 |
| 4325724 | Method for making glass An improved method of preparing a molten glass composition is presented. The constituents of the molten glass composition are classified into two or more melting groups according to mutual melting properties or characteristics such as volatility, corrosiv... | 04/20/1982 |
| 4309204 | Process and apparatus for remelting scrap glass A process and apparatus for remelting scrap glass fibers is disclosed. The removal of binder and remelting of the scrap are carried out in one operation, and the resulting molten scrap fibers are fed directly into a conventional glass melting furnace. Gra... | 01/05/1982 |
| 4270941 | Apparatus for processing heat softened mineral material The present invention embraces method and apparatus for processing heat-softened mineral material. Heat-softened mineral material flows from a supply through a passage, such as the passage in a flow block member or a bushing block member, into a bushing. ... | 06/02/1981 |
| 4264348 | Bushing blocks Apparatus and method for mixing molten glass as it flows from a bushing block into a bushing is disclosed. The bushing block is divided into a plurality of sections and the glass is flowed in a plurality of streams for intermixing prior to entry into the ... | 04/28/1981 |
| 4261720 | Method and system for purifying fiber-resin emissions A method and apparatus for purifying waste product emissions from the manufacture of glass fiber products, including a system in which an electrostatic precipitation may or may not be employed, and in which separate, and easily controlled, forming air and... | 04/14/1981 |
| 4252551 | Method of continuously preparing molten glass utilizing waste glass as part of ingredients A method of preparing molten glass in a melting tank of the continuous type by utilizing, as part of the ingredients, waste glass which may be either pulverized cullet of chopped glass fiber and may comprise an organic substance detrimental to the color o... | 02/24/1981 |
| 4249398 | Method and apparatus for processing heat-softenable fiber forming material Method of, and apparatus for, processing heat-softened fiber-forming material comprising a bushing block. The bushing block has a wall defining a passage for accommodating flow of heat-softened material from a supply into a fiber-forming bushing. The bush... | 02/10/1981 |
| 4161396 | Method and apparatus for processing heat-softened fiber-forming material The disclosure embraces a method of and apparatus for processing heat-softened fiber-forming mineral material, such as glass, to form fibers or filaments and particularly embraces a bushing block arrangement having one or more glass flow passages configur... | 07/17/1979 |
| 4155731 | Fiber forming bushing construction In apparatus for heat-softening and attenuating glass material into fibers, an improved low temperature electrical resistance bushing having extremely thin side walls and other electricity conducting components running from end to end in the bushing, rela... | 05/22/1979 |
| 4155732 | Spinnerette for making glass fibers A spinnerette has an extrusion crucible provided with extrusion nozzles in its bottom wall, and a melting crucible atop the extrusion crucible. The melting crucible is bounded in longitudinal direction by walls having arcuately curved wall segments so tha... | 05/22/1979 |
