Abstract: The present invention provides a roll manufacturing method characterized by comprising: a shaping step of shaping a base material into a web; a transferring step of transferring the shaped web; and a winding step of winding the transferred web into a roll. In addition, the present invention provides a roll manufacturing device characterized by comprising: a shaping unit for shaping a base material into a web; a transferring unit for transferring the shaped web; and a winding unit for winding the transferred web into a roll.

Abstract: Methods for producing glass articles from laminated glass tubing include introducing the glass tubing to a converter. The glass tubing includes a core layer under tensile stress, an outer clad layer under, and an inner clad layer. The methods include forming a feature the glass article at a working end of the laminated glass tubing and separating a glass article from the working end of the laminated glass tubing, which may expose the core layer under tensile stress at the working end of the glass tubing. The method further comprises remediating the exposed portion of the core layer by completely enclosing the core layer in a clad layer. Systems for re-cladding the exposed portion of the core layer as well as glass articles made using the systems and methods are also disclosed.

Abstract: The invention relates to a method for producing rock wool and cast iron by melting a mixture of materials such as basalt, blast-furnace slag, coke and components necessary for melting, with an admixture containing alumina, said admixture making it possible to adjust the alumina content in order to obtain a rock wool having the following composition (as wt %): Al2O3: 18-22; SiO2: 40-50; CaO: 10-15; MgO: <10; FeO: <2; Na2O: <4; K2O: <2. The method includes the following operations: producing by melting a slag and a cast iron, separating the slag and the cast iron, and performing a fibring operation on the slag followed by a bonding operation in order to obtain the rock wool. According to the invention, at least one spent adsorbent and/or catalyst is used as an admixture, said catalyst containing alumina in Al2O3 form. Said adsorbent and/or catalyst preferably contains at least one metal, and said metal is retrieved in the cast iron.

Abstract: Asymmetrically strengthened glass articles, methods for producing the same, and use of the articles in portable electronic device is disclosed. Using a budgeted amount of compressive stress and tensile stress, asymmetric chemical strengthening is optimized for the utility of a glass article. In some aspects, the strengthened glass article can be designed for reduced damage, or damage propagation, when dropped.

Abstract: A method for producing reinforced glass, reinforced glass and an electronic device are provided. The method for producing reinforced glass includes: subjecting glass to a first reinforcing treatment; detecting a first stress parameter of the glass subjected to the first reinforcing treatment, and determining whether the glass subjected to the first reinforcing treatment is qualified according to the first stress parameter; subjecting the glass to a second reinforcing treatment when the glass subjected to the first reinforcing treatment is qualified; detecting a second stress parameter of the glass subjected to the second reinforcing treatment, and determining whether the glass subjected to the second reinforcing treatment is qualified according to the second stress parameter; and subjecting the glass to a touch-polishing treatment when the glass subjected to the second reinforcing treatment is qualified, so as to obtain the reinforced glass.

Abstract: A method for manufacturing a porous glass fine particle body including: forming a deposit layer of glass fine particles, generated from raw material gas including a silicon-containing organic compound, on a rotary starting member; supplying the raw material gas to a burner; switching the raw material gas to purge gas; supplying the purge gas to the burner at a first flow rate when the raw material gas is discharged from inside the burner; and switching the first flow rate to a second flow rate smaller than the first flow rate.

Abstract: Processes and systems for producing glass fibers having regions devoid of glass using submerged combustion melters, including feeding a vitrifiable feed material into a feed inlet of a melting zone of a melter vessel, and heating the vitrifiable material with at least one burner directing combustion products of an oxidant and a first fuel into the melting zone under a level of the molten material in the zone. One or more of the burners is configured to impart heat and turbulence to the molten material, producing a turbulent molten material comprising a plurality of bubbles suspended in the molten material, the bubbles comprising at least some of the combustion products, and optionally other gas species introduced by the burners. The molten material and bubbles are drawn through a bushing fluidly connected to a forehearth to produce a glass fiber comprising a plurality of interior regions substantially devoid of glass.

Abstract: An apparatus for manufacturing a porous glass soot body to be formed into an optical fiber preform includes: a reaction chamber; a burner to form the porous glass soot body by depositing glass particles onto a seed rod hung inside the reaction chamber; and a heat-blocking element filling a gap between the burner and an opening for inserting the burner into the reaction chamber. A purpose is to prevent damage to the burner in the apparatus for manufacturing a porous glass soot body. In the manufacturing apparatus, the heat-blocking element may include a fibriform material. Also, in the manufacturing apparatus, the heat-blocking element may include a quartz wool material. Further, in the manufacturing apparatus, the content of iron in the quartz wool material may be 1 ppm or less.

Abstract: Methods and mechanisms for correcting a wavefront error in an optical element are disclosed. A wavefront error that is downstream of an optical element in an optical path is determined. A refractive index prescription that reduces the wavefront error is determined. A beam of energy is directed at a surface of the optical element in accordance with the refractive index prescription to alter the surface to change an index of refraction at multiple locations on the surface.

Abstract: The invention relates to a submerged combustion burner (1) and to a melter comprising submerged combustion burners (1). The burner comprises at least one oxidant feeding tube, at least one fuel feeding tube, a burner head having a peripheral envelope, the fuel and oxidant feeding tubes abutting against the burner head, at least two, preferably at least three, peripheral outward directed nozzles, each of the nozzles having a nozzle outlet, the nozzle outlets being arranged on a peripheral line on the peripheral envelope of the burner head, the nozzle outlet axis being inclined by an angle of 5 to 30° to the horizontal, and the nozzles practiced in the burner head being connected to the oxidant feeding tube and to the fuel feeding tube.

Abstract: Systems for producing articles from glass tube include a converter having a base with a plurality of processing stations and a turret moveable relative to the base. The turret indexes a plurality of holders for holding the glass tubes successively through the processing stations. The systems further include a gas flow system or a suction system for producing a flow of gas through the glass tube during one or more heating, forming, separating or piercing operations. The flow of gas through the glass tube produced by the gas flow system or suction system may be sufficient to evacuate or purge volatile constituents of the glass from the glass tube and/or pierce a meniscus formed on the glass tube during separation, thereby reducing the Surface Hydrolytic Response (SHR) of the interior surface of the glass tube and articles made therefrom.

Abstract: A method for producing a hollow glass product by an I.S. machine, said method being a press-blow or blow-blow method and implementing at least one parison mould and one blow mould, said method comprising the lubrication of said parison mould, the lubrication comprising spraying via a nozzle, said nozzle being carried by the arm of a mobile robot movable along the parison mould side of the I.S. machine, characterised in that said mobile robot is configured to bring said nozzle into the lubricating position after the glass gob has left the parison mould for the blow mould; spray the lubricant into said parison mould; withdraw said nozzle from the lubricating position before the transfer arm returns between the two half-moulds of the parison mould.

Abstract: A method of producing glass-based articles having sections of different thicknesses is provided, where a maximum central tension in a thinner section is less than that of a thicker section. The method includes reducing the thickness of a region of a glass-based article that includes a compressive stress layer extending from a surface to a depth of compression to form a glass-based article with multiple thickness regions, and then ion exchanging the glass-based article to form a stress profile in the thinner region that has a maximum central tension that is less than a maximum central tension of a stress profile of the thicker region. The glass articles produced by the method are also provided.

Abstract: Forming holes in a material includes focusing a pulsed laser beam into a laser beam focal line oriented along the beam propagation direction and directed into the material, the laser beam focal line generating an induced absorption within the material, the induced absorption producing a defect line along the laser beam focal line within the material, and translating the material and the laser beam relative to each other, thereby forming a plurality of defect lines in the material, and etching the material in an acid solution to produce holes greater than 1 micron in diameter by enlarging the defect lines in the material. A glass article includes a stack of glass substrates with formed holes of 1-100 micron diameter extending through the stack.

Abstract: Embodiments disclosed herein include systems and methods for controlling material warp that include placing the shaped mold in a heating device, forming a glass material into a shaped mold, and cooling the glass material and the shaped mold to a predetermined viscosity of the glass material. Some embodiments include, a predetermined time prior to removing the glass material and the shaped mold from the heating device, holding the glass at the mold in the heating device where the heating device temperature is substantially equal to mold and glass temperature just prior to exiting to ambient temperature. Some embodiments include removing the glass material and the shaped mold from the heating device to further cool the glass material and the shaped mold at ambient temperature, where after removing the glass material and the shaped mold from the heating device, the glass material will exhibit controlled or desired material warp.

Abstract: A glass manufacturing method. A plurality of stress values in a glass sheet are determined in a plurality of locations of the glass sheet respectively. A plurality of light leakage degrees are determined in the plurality of locations of a polarization-based display provided with the glass sheet, when the polarization-based display is in a state to block light transmissions. The plurality of determined stress values are modified based on the plurality of determined light leakage degrees. At least one additional glass sheet is manufactured in a glass sheet manufacturing process with at least one process condition of the glass sheet manufacturing process being adjusted based on the plurality of modified stress values.

Abstract: The present invention relates to a method for manufacturing a preform of silica for optical fiber production, as well as to a method for the production of optical fibers comprising a step of drawing the optical fiber from such a preform of silica, the method comprising a step of vaporization of a siloxane feedstock added with a compound having the following formula (I): wherein R, R? and R?, equal or different each other, are an alkyl group having from 1 to 5 carbon atoms, and A is a saturated or unsaturated chain of atoms selected from the group consisting of carbon atom, nitrogen atom, and oxygen atom, said chain A forming with the nitrogen atom linked thereto a saturated, unsaturated or aromatic heterocyclic moiety.

Abstract: A manufacturing method for a band-shaped glass film (GF) includes use of: a plurality of rollers (10) configured to change a direction of the falling band-shaped glass film (GF) to a horizontal direction; and a first horizontal-conveyance unit (4) configured to convey the band-shaped glass film (GF) in the horizontal direction after the changing of the direction of the band-shaped glass film (GF). After a lower end of the band-shaped glass film (GF) passes through a position between the plurality of rollers (10) being at a retreated position (P2) and the first horizontal-conveyance unit (4), the plurality of rollers (10) are moved from the retreated position (P2) to a regular position (P1) to apply a pressing force to the band-shaped glass film (GF), to thereby cut the band-shaped glass film (GF) along a width direction by bend-breaking.

Abstract: A mineral fiber forming device including: a centrifuge configured to rotate about a rotation axis, the centrifuge including an annular wall pierced by a plurality of orifices, the axis of symmetry of the annular wall being the rotation axis; a first annular inductor configured to heat a top part of the annular wall; a second annular inductor configured to heat a bottom part of the annular wall. The device makes it possible to increase its energy efficiency and very greatly reduce, even cancel altogether, its carbon dioxide emission level.

Abstract: An unshaped product including, as weight percentages, A) particles (a) of at least one refractory material other than a glass and a glass-ceramic, and the main constituent(s) of which are alumina and/or zirconia and/or silica and/or chromium oxide: B) 2% to 15% of particles (b) of a hot binder chosen from glass-ceramic particles, particles made of a glass, and the mixtures of these particles, a glass being a noncrystalline material exhibiting a glass transition temperature of less than 1100° C., the hot binder not being in the solid state at 1500° C., C) less than 2% of particles (c) of hydraulic cement, D) less than 7% of other constituents, the particles (a) and (b) being distributed, as weight percentages in the following way: fraction<0.5 ?m: ?1%, fraction<2 ?m: ?4%, fraction<10 ?m: ?13%, fraction<40 ?m: 25%-52%.