1137 results about "Molten glass" patented technology

To provide cover glass for mobile terminals exhibiting high strength in a thin plate thickness state to enable reductions in thickness of apparatuses when inserted in the apparatuses, cover glass (1) for a mobile terminal of the invention is cover glass (1) that is obtained by forming a resist pattern on main surfaces of a plate-shaped glass substrate, then etching the glass substrate with an etchant using the resist pattern as a mask, and thereby cutting the glass substrate into a desired shape and that protects a display screen of the mobile terminal, where an edge face of the cover glass (1) is formed of a molten glass surface, and as surface roughness of the edge face, arithmetic mean roughness Ra is 10 nm or less.

A melter apparatus includes a floor, a ceiling, and a substantially vertical wall connecting the floor and ceiling at a perimeter of the floor and ceiling, a melting zone being defined by the floor, ceiling and wall, the melting zone having a feed inlet and a molten glass outlet positioned at opposing ends of the melting zone. The melting zone includes an expanding zone beginning at the inlet and extending to an intermediate location relative to the opposing ends, and a narrowing zone extending from the intermediate location to the outlet. One or more burners, at least some of which are positioned to direct combustion products into the melting zone under a level of molten glass in the zone, are also provided.

The invention is directed to ultra-low expansion glasses to which adjustments have been made to selected variables in order to improve the properties of the glasses, and particularly to lower the expansivity of the glasses. The glasses are titania-doped silica glasses. The variables being adjusted include an adjustment in β-OH level; an adjustment to the cooling rate of the molten glass material through the setting point; and the addition of selected dopants to impact the CTE behavior.

A method of a drawing a glass ribbon from molten glass sheet via a downdraw process by creating a temperature drop across a thickness of the molten glass flowing over forming surfaces of a forming wedge. The forming wedge includes an electrically conductive material for heating the glass above the root.

Methods and apparatus for refining and delivering a supply of molten glass include melting a supply of glass in a melter and discharging a stream of molten glass. A refining section is provided to refine the molten glass discharged by the melter and to deliver the molten glass downstream to a glass forming apparatus. The refining section is mounted for movement into and out of contact with the stream of molten glass to connect and disconnect the glass forming apparatus with the stream of molten glass.

A melter apparatus includes a floor, a ceiling, and a wall connecting the floor and ceiling at a perimeter of the floor and ceiling, a melting zone being defined by the floor, ceiling and wall, the melting zone having a feed inlet and a molten glass outlet positioned at opposing ends of the melting zone. Melter apparatus include an exit end having a melter exit structure for discharging turbulent molten glass formed by one or more submerged combustion burners, the melter exit structure fluidly and mechanically connecting the melter vessel to a molten glass conditioning channel. The melter exit structure includes a fluid-cooled transition channel configured to form a frozen glass layer or highly viscous glass layer, or combination thereof, on inner surfaces of the fluid-cooled transition channel and thus protect the melter exit structure from mechanical energy imparted from the melter vessel to the melter exit structure.

A composition includes a carbon nanotube (CNT)-infused glass fiber material, which includes a glass fiber material of spoolable dimensions and carbon nanotubes (CNTs) bonded to it. The CNTs are uniform in length and distribution. A continuous CNT infusion process includes: (a) disposing a carbon-nanotube forming catalyst on a surface of a glass fiber material of spoolable dimensions; and (b) synthesizing carbon nanotubes on the glass fiber material, thereby forming a carbon nanotube-infused glass fiber material. The continuous CNT infusion process optionally includes extruding a glass fiber material from a glass melt or removing sizing material from a pre-fabricated glass fiber material.

A glass substrate for a display, which is formed of a glass having a light weight and having high refinability with decreasing environmental burdens, the glass comprising, by mass %, 50 to 70% of SiO₂, 5 to 18% of B₂O₃, 10 to 25% of Al₂O₃, 0 to 10% of MgO, 0 to 20% of CaO, 0 to 20% of SrO, 0 to 10% of BaO, 5 to 20% of RO (in which R is at least one member selected from the group consisting of Mg, Ca, Sr and Ba), and over 0.20% but not more than 2.0% of R′₂O (in which R′ is at least one member selected from the group consisting of Li, Na and K), and containing, by mass %, 0.05 to 1.5% of oxide of metal that changes in valence number in a molten glass, and substantially containing none of As₂O₃, Sb₂O₃ and PbO.

A submerged combustion melter includes a floor, a roof, and a sidewall structure connecting the floor and roof defining an internal space. A first portion of the internal space defines a melting zone, and a second portion defines a fining zone immediately downstream of the melting zone. One or more combustion burners in either the floor, roof, the sidewall structure, or any combination of these, are configured to emit the combustion gases from a position under a level of, and positioned to transfer heat to and produce, a turbulent molten mass of glass containing bubbles in the melting zone. The fining zone is devoid of combustion burners or other apparatus or components that would increase turbulence above that in the melting zone. The melter may include a treating zone that stabilizes or destabilizes bubbles and/or foam. Processes of using the melters are a feature of the disclosure.

Processes and systems for producing molten glass using submerged combustion melters, including densifying an initial composition comprising vitrifiable particulate solids and interstitial gas to form a densified composition comprising the solids by removing a portion of the interstitial gas from the composition. The initial composition is passed from an initial environment having a first pressure through a second environment having a second pressure higher than the first pressure to form a composition being densified. Any fugitive particulate solids escaping from the composition being densified are captured and recombined with the composition being densified to form the densified composition. The densified composition is fed into a feed inlet of a turbulent melting zone of a melter vessel and converted into turbulent molten material using at least one submerged combustion burner in the turbulent melting zone.

To provide a process for producing a glass/resin composite having a sufficient transportability, handling efficiency and processability, even though the thickness of the glass is very thin, without impairing excellent properties of glass.

A process for producing a glass/resin composite, which comprises forming molten glass into a glass ribbon and forming a resin layer on at least one surface of the glass ribbon is provided. The resin layer is preferably formed by bonding to a glass ribbon, applying a heat melt resin or applying a curable resin. Further, a process for producing a glass/resin composite, wherein a cut glass substrate is bonded on a continuously supplied resin film is provided.

A process for producing a precision press-molding preform having a predetermined weight from a molten glass, wherein the molten glass is shaped into a glass gob and the above glass gob is etched to remove a surface layer of the glass gob to produce the precision press-molding preform formed of an optical glass having said weight, and further wherein said surface layer has a thickness of 0.5 μm or more.

The invention discloses a method for treating waste incineration fly ash by using plasmas. The method comprises the following steps of: regulating the weight ratio of CaO to SiO2 in waste incineration fly ash; then granulating and compressing into blocks for pretreatment; sending the treated fly ash into a metal melting pool in a plasma reaction furnace through a dividing wheel and quenching fly ash melts into granules through water; and harmlessly treating tail gas in the furnace through a treatment system. The invention solves the problem of molten glass during treating the waste incineration fly ash by adopting plasma equipment, the problem of bridging in a feeding process, the problem of jamming of a feeder, the problem of pipeline blockage caused by the diffusion of the fly ash alongwith the tail gas, the problem of obtaining glass harmless to the environment by retreating the melts and the problem of tail gas innocent treatment.

Molten glass is press-molded by a metallic die in which a cylindrical body is provided in a vertically standing manner at a central part of a bottom surface of a bottomed hole and a molding surface corresponding to a chamfering shape of an outer peripheral edge surface of a glass substrate is consecutively formed in an inner peripheral wall, and a glass substrate precursor provided with the chamfering shape axially consecutive on an outer peripheral surface thereof and a through hole formed at a central part thereof is thereby formed. The glass substrate precursor is cut perpendicular to an axial direction to be separated into respective glass substrates. Next, the respective glass substrates are subjected to a lapping process and a polishing process, if necessary, to produce a glass substrate as a final product. According to the manufacturing method, a glass substrate for information recording medium whose inner and outer peripheral edge surfaces are chamfered can be manufactured with an improved efficiency. Further, a glass substrate having a small diameter can be manufactured with a high efficiency.

A process for producing a glass molding, in which a glass molding of stable quality can be efficiently produced through minimizing of temperature fluctuation of molten glass drops at pressure molding operation; and an apparatus for production of a glass molding used in this process. Molten glass drops are fed into an inferior die by causing the molten glass drops to fall from above toward the inferior die. The arrival of molten glass drops having fallen at a given location is detected, and pressurization of the molten glass drops by means of molding dies is initiated upon the passage of a given time since the detection.

Methods and systems for controlling bubble size and bubble decay rate of glass foams formed during submerged combustion melting. Flowing a molten mass of foamed glass comprising molten glass and bubbles entrained therein into an apparatus downstream of a submerged combustion melter. The downstream apparatus has a floor, a roof, and a sidewall structure connecting the floor and roof. The foamed glass has glass foam of glass foam bubbles on its top surface, and the downstream apparatus defines a space for a gaseous atmosphere above and in contact with the glass foam. The downstream apparatus includes heating components to heat or maintain temperature of the foamed glass. Adjusting composition of the atmosphere above the glass foam, and/or contacting the foam with a liquid or solid composition controls bubble size of the glass foam bubbles, and/or foam decay rate.

A nuclear fusion power plant having a spherical blast-chamber filled with a liquid coolant that breeds tritium, absorbs neutrons, and functions as both an acoustical and laser medium. Fuel bubbles up through the sphere's base and is positioned using computer guided piezoelectric transducers that are located outside the blast-chamber. These generate phase-shifted standing-waves that tractor the bubble to the center. Once there, powerful acoustic compression waves are launched. Shortly before these reach the fuel, an intense burst of light is pumped into the sphere, making the liquid laser-active. When the shockwaves arrive, the fuel temperature skyrockets and it radiates brightly. This, photon-burst, seeds outgoing laser cascades that return, greatly amplified, from the sphere's polished innards. Trapped within a reflecting sphere, squeezed on all sides by high-density matter, the fuel cannot cool or disassemble before thorough combustion. The blast's kinetic energy is absorbed piezoelectrically.

The level of precious-metal inclusions in glass products, e.g., glass substrates for liquid crystal displays, is reduced by stirring molten glass in a stir chamber (11) under conditions such that the magnitude of the shear stress τ on the chamber's wall (19) and on the surfaces of the stirrer (13) is reduced while at the same time, the Q•E product for the system is kept high, where Q is the flow of glass through the stirring system and E is the system's stirring effectiveness.

The invention provides a manufacturing method of a wafer level glass microcavity used for packaging an MEMS, which comprises the following steps of: (1) etching a shallow slot on an Si wafer by an Si microfabrication process; (2) placing a right amount of high-temperature gas release agent in the shallow slot; (3) carrying out anodic bonding on the Si wafer and a Pyrex7740 glass wafer in air or vacuum and enabling the shallow slot on the Pyrex7740 glass to form a sealed cavity body; and (4) heating the bonded wafer in the air to the temperature of 810-890 DEG C, keeping the temperature for 3-5min, enabling molten glass corresponding to the sealed cavity body to be in a spherical shape by the high-temperature gas release agent because of positive pressure generated by gas generated by heating, cooling to the normal temperature, annealing and removing a silicon wafer to obtain a wafer level spherical glass microcavity array. The invention adopts the release of the high-temperature gas release agent to provide a gas source, is used for forming the glass microcavity and has the characteristics of low cost, simple method, high forming height and good degree of sphericity.

A continuous method for manufacturing crystallized glass plates includes the steps of melting a raw crystallizable glass material to form molten glass, adjusting the molten glass to have a predetermined viscosity, rolling the molten glass to form a belt of crystallizable glass, and passing the belt of crystallizable glass through a crystallization tunnel so as to form a belt of crystallized glass.

A method of manufacturing a tempered glass substrate includes: melting glass raw materials blended so as to have a glass composition including, in terms of mass %, 40 to 71% of SiO₂, 3 to 23% of Al₂O₃, 0 to 3.5% of Li₂O, 7 to 20% of Na₂O, and 0 to 15% of K₂O; forming the resultant molten glass into a sheet shape; and performing ion exchange treatment in a KNO₃ molten salt, the KNO₃ molten salt having a controlled concentration of Na ions, to form a compressive stress layer in a surface of the glass.

The invention relates to a high-strength glass fiber which has an excellent mechanical property and a product of the glass fiber. The high-strength glass fiber can serve as an ideal enhancing base material of a high-performance composite material and is applied widely in the fields of windmill blades, space shuttles and the like, which have high requirements for the specific strength and the specific elasticity modulus. The system is characterized in that calcinated aluminum oxide serves as on of the raw materials, impurities in glass compositions are reduced, the diathermancy of molten glass is improved, the energy consumption is reduced, and the stability of glass fiber drawing operation is improved greatly. The glass fiber with the compositions is required to be produced by direct drawing on a specific tank furnace, the electric boosting input energy of the tank furnace accounts for more than 20% of the total energy input, and more than 60% of the electric boosting energy is applied to raw material melting areas. The fiber mainly comprises 56-65 wt.% of SiO2, 18.5-25.8 wt.% of Al2O3, 11.5-23.0 wt.% of RO (RO is sum of CaO, MgO, SrO and BaO), 0.1-1.0 wt.% of CeO2 and 0.1-0.8 wt.% of Li2O.

The invention discloses a production method of a superfine glass wool product. The production method comprises the following steps of: recovering shattered glass, cleaning and crushing; preparing raw materials including feldspar, dolomite, sodium carbonate and borax, and testing and analyzing the components of the raw materials; calculating the use levels of the raw materials according to the required proportion of the compound in a batch mixture, and weighting and mixing the raw materials and the shattered glass to prepare the batch mixture; founding the batch mixture to obtain uniform, purified and transparent molten glass; preparing a binder; fiberizing the molten glass to obtain glass wool, and spraying the binder into the glass wool; solidifying and sizing and the glass wool; and carrying out aftertreatment on the glass wool product. In the invention, the water soluble resin binder is used so that the produced glass wool product has good elasticity and is uniform. Since the recovered waste glass is adopted as the main raw material, the recycle of resource is realized, the environment is protected, and the cost is saved. In addition, the production method of the superfine glass wool product has simple operation.

The invention relates to ultra-white glass, belonging to the preparation field of glass. The preparation method of the ultra-white glass is as follows: La2(CO3)3, Ce2(CO3)3, Nd2(CO3)3, MnO2, CoO and CuSO4 are added in common float glass to perform compound clarification and decoloring, wherein under the combined action of chemical decoloring and physical decoloring, the thickness of the molten glass is 4mm, the visible light transmittance is more than 94.5% under the wavelength of 380-780nm, the whiteness is less than 0.082, the flexural strength is more than 380MPa and the microhardness is more than 8320MPa. The ultra-white glass has the advantages of higher visible light transmittance, low whiteness, high flexural strength and higher microhardness; and the quality of the white float glass can be obviously increased. The ultra-white glass can be widely used in the fields such as building glass, photovoltaic technology, experimental apparatus and the like.

The invention relates to a device for the production of high-melting glass materials or high-melting glass ceramic materials, comprising a vessel for accommodating molten glass and a container that accommodates the vessel, whereby the vessel has a tubular outlet. According to the invention, the device is characterised by the fact that the vessel and a first section of the tubular outlet if formed of iridium or a material with a high iridium content, whereby the container is designed to accommodate the vessel and the first section of the tubular outlet under a protective gas atmosphere. The invention also relates to a corresponding method. The molten glass is shaped into a formed part in a discontinuous operation. The choice of the material for the vessel used as the crucible allows the attainment of high temperatures according to the invention which enables glass materials or glass ceramic materials with a much higher spectral transmission in the visible wavelength range. The use of an inert protective gas enables the prevention of unwanted oxide formation on the vessel and the tubular outlet. According to the invention, the glass can be used as a transitional glass between types of glass with very different coefficients of thermal expansion.

A glass composition for glass fiber comprises, by mass percentage in terms of oxide, 60 to 75% SiO₂, 0 to 10% Al₂O₃, 0 to 20% B₂O₃, 5 to 15% Li₂O+Na₂O+K₂O, 0 to 10% MgO+CaO+SrO+BaO+ZnO, 0 to 10% TiO₂ and 0 to 10% Zr0₂. A glass fiber consists of the above glass composition for glass fiber. A process for producing a glass fiber comprises the steps of melting the above glass composition in a heat-resistant vessel and continuously drawing out the molten glass through a heat-resistant nozzle so as to form a glass fiber; coating the surface thereof with a chemical; and continuously reeling the coated glass fiber. A composite material is obtained by compositing the glass fiber with an organic resin.

A method of making an alkali metal silicate glass includes preparing an alkali metal feedstock having a first desired level of alkali metal, the alkali metal feedstock being essentially free of an element that absorbs between 0.8 and 2.5 μm in any valence state. The method also includes combining and mixing the alkali metal feedstock with at least one silicate feedstock to form a precursor material having a second desired level of alkali metal and melting the precursor material to form molten glass.

An electronic device cover glass blank (G) to be used as a substrate of an electronic device cover glass includes a pair of main surfaces (1A, 1B), and end surfaces that adjoin the pair of main surfaces (1A, 1B). The main surfaces are shaped so as to be asymmetric to each other in the thickness direction. The main surfaces (1A, 1B) are press-molded surfaces formed by direct pressing. A method for manufacturing the cover glass blank includes a molding step in which a pair of dies is used for press molding a mass of molten glass supplied from a molten glass supplying unit. The pressing surface of at least one of the pair of dies has a shape for forming the main surfaces and an interposed surface.

The memorial with cremains provides a transparent or translucent glass memorial containing the cremains of the deceased with an article(s) of significance to the deceased and/or family and descendents. A method of forming the memorial comprises melting the glass to at least a plastic consistency, mixing the cremains therein, adding the article(s) of significance either in its entirety or disintegrated, optionally adding an inscribed placard within the molten glass, forming the glass to the desired shape, cooling the glass, and adding an inscription directly to the glass or separate placard if not included within the glass earlier. The glass may comprise or contain glass from another article favored by the deceased, e.g., a wine glass or bottle from a favorite beverage, etc. The article included therein may survive in its solid state or may be melted and fused with the glass, depending upon its melting point relative to the glass.

Disclosed is a method for producing a glass, wherein a molten glass is obtained by melting and refining a glass starting material and the molten glass is molded, thereby producing a glass molded body composed of an optical glass. The method for producing a glass is characterized by comprising preparation of a glass starting material so as to obtain an oxide glass which contains, in cationic percent, 12-65% of B3+, 0-20% of Si4+, 0-6% of Ge4+, 15-50% of La3+, Gd3+, Y3+, Yb3+, Sc3+ and Lu3+ in total, 4-54% of Ta5+, Zr4+, Ti4+, Nb5+, W6+ and Bi3+ in total, 0-35% of Zn2+, 0-9% of Li+, Na+ and K+ in total and 0-15% of Mg2+, Ca2+, Sr2+ and Ba2+ in total, with the sum of all cationic components being 99-100%. The method is also characterized in that the glass starting material contains a carbonate and a sulfate.