Abstract: Apparatus, systems and methods for making a fibrous products form molten material into fibers. The fibers are sprayed with a coolant liquid to cool the fibers. A flow rate of the sprayed coolant liquid is controllable. The fibers are also sprayed with a binder dispersion. The fibers are directed toward a conveyor to form an uncured fibrous pack. A thickness of the uncured pack is measured and the flow rate of the sprayed coolant liquid is controlled based on the measured thickness of the uncured pack.

Abstract: A silica-based multi core optical fiber and a fabrication method for the same are provided, and include two or more cores of GeO2—SiO2 glass including an fluorine concentration not less than about 15 w % and a germanium concentration about 0.05 wt % to 2 wt %, in a core. A relative refractive index difference of a cladding and a core is not less than about 3%; and a ratio of a cladding diameter to a core diameter is about 1.02 to 3.0. A silica-based single core optical fiber is also provided, and includes a core having a germanium concentration not less than about 15 wt % and an fluorine concentration about 0.05 wt % to 2 wt %.

Abstract: Tubular pipe insulation is made from a glass fiber mat produced utilizing a rotary glass fiberization process. A spinner disc is rotated to centrifuge molten glass through fiberization holes in an annular sidewall of the spinner disc and form primary glass fibers. The primary glass fibers are attenuated and formed into a veil where the fibers are dispersed to reduce in length the fiber networks formed from the fibers. Binder is applied to the fibers and the fibers are collected into a mat that, when pulled apart by longitudinally directed, opposing forces, separates across the width of the mat into two mat sections having feathered edges with substantially no fibrous stringers extending beyond the feathered edges for a distance greater than about four inches. The leading mat section is then wound about a mandrel and the binder in the mat is cured to form the pipe insulation.

Abstract: The invention relates to glass powder, especially a biologically active glass powder, which includes a plurality of glass particles and which is characterized by the following features: the glass particles are made up by >90% of non-spherical particles; the geometry of the individual non-spherical particle is characterized by a ratio of length to diameter of 1.1 to 105.

Abstract: A method of reducing carbon monoxide and hydrocarbon emissions in a rotary glass fiberization process utilizes a fiberizing spinner with fiberizing holes through which molten glass is passed by centrifugal force to form primary fibers which pass through an annular heat bath region and attenuation fluid emitting apparatus that forcefully emits an attenuating fluid to attenuate the primary fibers into finer diameter fibers. Oxygen is introduced into the annular heat bath region to oxygen enrich the annular heat bath region and is combusted in the annular heat bath region to materially reduce carbon monoxide and unburned hydrocarbon emissions produced by the process.

Abstract: A method of reducing carbon monoxide and hydrocarbon emissions in a rotary glass fiberization process utilizes a fiberizing spinner with fiberizing holes through which molten glass is passed by centrifugal force to form primary fibers which pass through an annular heat bath region and attenuation fluid emitting apparatus that forcefully emits an attenuating fluid to attenuate the primary fibers into finer diameter fibers. Oxygen is introduced into the annular heat bath region to oxygen enrich the annular heat bath region and is combusted in the annular heat bath region to materially reduce carbon monoxide and unburned hydrocarbon emissions produced by the process.

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.