Abstract: Provided is a manufacturing method for a glass article, including: a pre-heating step (S1) of heating a transfer pipe (7); and a transfer step (S4) of causing molten glass to flow through the transfer pipe (7) after the pre-heating step (S1). The transfer pipe (7) includes a main body portion (8) having a tubular shape and a flange portion (9a, 9b) formed on an end portion of the main body portion (8). The main body portion (8) is retained by a refractory (10). In the pre-heating step (S1), the main body portion (8) is heated while the flange portion (9a, 9b) is movably supported so that the flange portion (9a, 9b) is moved in accordance with extension of the main body portion (8).

Abstract: A batch charger includes a barrel defining a direction X of charging a glass forming batch into the furnace, and a mechanical assembly provided with a member for conveying the batch to the furnace in the charging direction X, this conveying member being at least partially arranged in the barrel, and a motorized unit for driving the conveying member. The batch charger includes a mechanical assembly translatably mobile relative to the barrel, in the charging direction X.

Abstract: A method of forming a 3D mirror for a heads-up display (HUD) system includes providing a glass-based preform having a first major surface, a second major surface, and a minor surface connecting the first and second major surfaces, and further includes disposing the glass-based preform on a mold having a concave surface such that the first and second longitudinal side surfaces are adjacent to a longitudinal wall of a housing. The longitudinal wall extends from the concave surface to at least a height of the second major surface of the glass-based preform. The method further includes supplying a vacuum and conforming the second major surface to the concave surface of the mold using the vacuum. The first and second transverse side surfaces have a curved shape corresponding to a curve of the concave surface a remain coincident with the concave surface during the conforming of the second major surface.

Abstract: A glass manufacturing apparatus can include a first elongated member, a second elongated member, and an elongated anvil member aligned with a space disposed between the first elongated member and the second elongated member. Methods can include rotating the first elongated member and the second elongated member while the elongated anvil member contacts a first major surface of the glass ribbon. In another embodiment, a glass manufacturing apparatus can include a first and second row of suction cups, and an elongated anvil member. The elongated anvil member can be engaged with a first major surface of the glass ribbon between the first and second row of suction cups that are attached to the first major surface of the glass ribbon. The glass manufacturing apparatus is configured to produce a score line on the second major surface of the glass ribbon along the elongated anvil member.

Abstract: A furnace for melting vitrifiable material, in particular glass, employs a submerged burner, the furnace including a wall cooled by a cooling fluid, the face of the wall facing toward the interior of the furnace having, before vitrifiable material is melted in the furnace, an attachment texture for so-called self-crucible devitrified vitrifiable material.

Abstract: A method of forming a glass ribbon includes flowing a molten glass into a caster having a width (Wcast) and a thickness (Tcast) to form a cast glass, cooling the cast glass in the caster to a viscosity of 108 Poise or more, conveying the cast glass from the caster, volumetrically heating the cast glass to an average viscosity of 106 Poise or less using a gyrotron microwave heating device, and drawing the cast glass into a glass ribbon having a width (Wgr) that is less than or equal to the width (Wcast) of the caster and a thickness (Tgr) that is less than the thickness (Tcast) of the caster.

Abstract: Various embodiments disclosed relate to a method for bending a glass substrate. The method includes actuating at least one heat shield to a first position at least partially covering an edge portion of a first major surface of the glass substrate. The method further includes heating the glass substrate. The method further includes actuating the at least one heat shield to a second position at least partially uncovering the edge portion of the glass substrate.

Abstract: An apparatus for downwardly drawing a glass ribbon includes a forming vessel including an upper portion including a pair of outside surfaces and a forming wedge portion including a pair of downwardly inclined forming surfaces converging along a downstream direction to form a bottom edge. An edge director is provided that includes a flow directing portion formed from a portion of a frustoconical or conical shape.

Abstract: A method of fining glass is disclosed that includes flowing a molten glass bath through a fining chamber. The molten glass bath has an undercurrent that flows beneath a skimmer that is partially submerged in the molten glass bath. One or more fining agents are introduced into the undercurrent of the molten glass bath directly beneath the skimmer from a carrier gas. In this way, the fining agent(s) may selectively target the gas bubbles drawn under the skimmer within the undercurrent of the molten glass for removal. The method may be employed to fine molten gas produced in a submerged combustion melter. A fining vessel for fining molten glass is also disclosed.

Abstract: Embodiments of a method for making a contoured glass article and the resulting contoured glass article are disclosed. In one or more embodiments, the method includes cold bending a flat glass sheet having first and second opposing major surfaces, at least one region having a first thickness, and at least one region having a second thickness that is less than the first thickness, to produce cold bent glass sheet having at least one bend region along a portion of the at least one region having the second thickness; and restraining the cold bent glass sheet to produce the contoured glass article. One or more embodiments pertain to the resulting contoured glass article.

Abstract: A method of producing flint glass using submerged combustion melting involves introducing a vitrifiable feed material into a glass melt contained within a submerged combustion melter. The vitrifiable feed material is formulated to provide the glass melt with a glass chemical composition suitable for producing flint glass articles. To that end, the glass melt comprises a total iron content expressed as Fe2O3 in an amount ranging from 0.04 wt % to 0.06 wt % and also has a redox ratio that ranges from 0.1 to 0.4, and the vitrifiable feed material further includes between 0.008 wt % and 0.016 wt % of selenium or between 0.1 wt % and 0.2 wt % of manganese oxide in order to achieve an appropriate content of selenium or manganese oxide in the glass melt.

Abstract: A process and system for forming a curved glass article from a sheet of glass material is provided. The process and system includes supporting a glass sheet on a shaping frame and then heating the sheet of glass material while supported by the shaping frame such that the central region of the sheet of glass material deforms into an open central cavity of the bending frame. The process and/or system are configured such that a steep, localized temperature differential is formed in the region adjacent the outer edge of the glass sheet during the heating stage of the shaping process.

Abstract: A method of producing glass using submerged combustion melting is disclosed. The method includes introducing a vitrifiable feed material into a glass melt contained within a submerged combustion melter. The glass melt contained in the melter has a redox ratio defined as a ratio of Fe2+ to total iron in the glass melt. The method further includes combusting a combustible gas mixture supplied to each of the submerged burners to produce combustion products, and discharging the combustion products directly into the glass melt. Still further, the method includes adjusting the redox ratio of the glass melt by controlling one or more operating conditions of the submerged combustion melter selected from (1) an oxygen-to-fuel ratio of the combustible gas mixture supplied to each of the submerged burners, (2) a residence time of the glass melt, and (3) a gas flux through the glass melt.

Abstract: The present invention provides a method of increasing the strength of a glass substrate for optical filters and a tempered-glass optical filter using a tempered glass substrate manufactured using the same, in which the glass substrate for optical filters is subjected to chemical tempering so that a compressive stress (CS) and a depth of layer (DOL) of the glass substrate are adjusted to increase the bending strength thereof.

Abstract: Provided is a sleeve for glass tube molding capable of suppressing generation of foreign matter such as rust from a sleeve shaft and suppressing adhesion of foreign matter such as rust to the molten glass without degrading mechanical strength of the sleeve shaft. A sleeve for glass tube molding includes a sleeve shaft including a through-hole and a refractory cylindrical body inserted coaxially with the sleeve shaft around the sleeve shaft. A superior rust-resistant material having rust resistance superior to that of the sleeve shaft is provided to cover a part or whole of an inner surface of the through-hole of the sleeve shaft and to cover a tip of the sleeve shaft.

Abstract: Glass stack configurations including a carrier plate, setter plates, and glass sheets for thermal treatment of the glass sheets to form glass ceramic articles are provided. The glass stacking configurations and components described herein are selected to improve thermal uniformity throughout a glass stack during ceramming processes while maintaining or even reducing the stresses in the resultant glass ceramic article. Accordingly, the glass ceramic articles made according to the various embodiments described herein exhibit improved optical qualities and less warp than glass ceramic articles made according to conventional processes. Various embodiments of carrier plates, setter plates, parting agent compositions, and methods of stacking glass sheets are described.

Abstract: A laminate sheet article including: a core including an electrical semi-conductor or an electrical conductor; and a continuous glass clad layer on at least four of six sides the core of the sheet article. Also disclosed is an apparatus for making a sheet laminate article as defined herein. Also disclosed is a method of making and using the article.

Abstract: A method for separating a portion from a sheet glass element having a thickness of at least 2 millimeters along an intended separation line that divides the sheet glass element into the portion and a remaining main part is provided. The method includes producing filamentary damages comprising sub-micrometer hollow channels in a volume of the glass sheet element adjacently aligned along the separation line; and heating and/or cooling the glass sheet element to cause expansion and/or contraction so that the portion detaches from the main part along the separation line. The portion and the remaining main part each remain intact as a whole. The step of producing the filamentary damages includes generating a plasma within the volume with laser pulses of an ultrashort pulse laser; and displacing points of incidence of the laser pulses over a surface of the glass sheet element along the separation line.

Abstract: To provide a method for manufacturing a medical glass container prevented from breakage and deformation and a fire blasting device.

Abstract: A system includes an overflow distributor (200) including a weir (245, 247). The system further includes a thermal exchange unit positioned in proximity to the weir. The thermal exchange unit (300) includes a tubular focusing member (310) and a thermal member (330) disposed at least partially within a lumen of the focusing member. The focusing member extends distally beyond a distal end of the thermal member by a distance It. In an embodiment the thermal exchange unit comprises several focusing members and thermal members to control a thermal profile of a glass stream flowing over the weir, particularly of a portion of the glass stream in contact with the weir.