Abstract: The present invention relates to a laser cutting technology for cutting and separating thin substrates of transparent materials, for example to cutting of display glass compositions mainly used for production of Thin Film Transistors (TFT) devices. The described laser process can be used to make straight cuts, for example at a speed of >0.25 m/sec, to cut sharp radii outer corners (<1 mm), and to create arbitrary curved shapes including forming interior holes and slots. A method of laser processing an alkaline earth boro-aluminosilicate glass composite workpiece includes focusing a pulsed laser beam into a focal line. The pulsed laser produces pulse bursts with 5-20 pulses per pulse burst and pulse burst energy of 300-600 micro Joules per burst. The focal line is directed into the glass composite workpiece, generating induced absorption within the material.

Abstract: Proposed are an apparatus and a method of manufacturing a shell for a resonator using a laser. According to the apparatus and method, it is possible to stably manufacture 3D shells for a resonator in various shapes by applying heat through a laser and adjusting the degree of vacuum in a forming frame, it is possible to improve work safety and work efficiency, and it is possible to use various materials that are heated and deformed by a laser other than a glass material, thereby being able to increase generality of manufacturing. In particular, it is possible to accurately implement 3D shapes of a shell for a resonator such as a hemisphere or a semi-toroid, so it is possible to remarkably reduce a defective portion in manufacturing and the manufacturing cost, and considerably improve productivity.

Abstract: A hot forming device for producing glass containers from a glass tube is provided. The device includes a machine frame, a turntable, a plurality of holding chucks, and a direct drive motor. The turntable is mounted on the machine frame. The holding chucks are arranged on the turntable. The turntable is connected to the machine frame directly by the direct drive without a transmission. The direct drive has a stator arranged in an upper region of the machine frame and a rotor on the turntable.

Abstract: An apparatus and related process for producing a high-strength weld between two glass components. Chucks clamp and move respective first ends of the glass components toward each other inside an enclosure, where the second ends are heated, softened, and welded together in a weld zone. The enclosure has layers of stacked quartz glass bricks and allows the weld zone to cool slowly and avoid stress. A propane quartz melting torch directs a flame inside the enclosure and toward the second ends as the glass components move toward each other. The flame softens the second ends and creates substantially smooth polished surfaces in the weld zone having an increased hydroxide content. At least 80% of the weld zone has a hydroxide content greater than about 10 ppm average in a 10 ?m depth from the surface and the tensile strength of the weld zone is above about 10 MPa.

Abstract: A system and method for fire-polishing glass containers includes at least one fixed structure positioned on each side of a conveyor belt, in the forward movement direction of the glass containers; a structure that can move via each of the fixed structures, which moves with a forward movement in relation to the forward movement line of the conveyor belt, and with a backward movement in relation to the forward movement of the conveyor belt; a series of burners coupled to each of the moveable structures; sensors positioned on one side of the conveyor belt to determine the speed of the carrier belt and the distance or separation between containers; and a control device connected to the sensors and moveable structure, for adjusting and synchronizing the speed and distance of the containers.

Abstract: A device for producing and removing an internal contour from a planar substrate comprising: a beam-producing- and beam-forming arrangement which is configured to perform: a contour definition step wherein a laser beam is guided over the substrate to produce a plurality of individual zones of internal damage in a substrate material along a contour line defining the internal contour; a crack deformation step, wherein the laser beam is guided over the substrate and produces a plurality of individual zones of internal damage in the substrate material to form a plurality of crack line portions that lead away from the contour line into the internal contour; and a material removal-step, wherein a laser beam directed towards the substrate surface that inscribes a removal line through a thickness of the substrate at the internal contour causes the internal contour to detach from the substrate.

Abstract: The present disclosure illustrates an energy-saving wind box, a cooling device and an energy-saving cooling system. A wind box body of the present disclosure is installed with slot plates and driving components to movably shield wind holes, wherein an outer surface of the wind box body has air outlets arranged horizontally in an upper row and a lower row, and the air outlets in the upper row are respectively opposite to the air outlets in the lower row. Each air outlet has a wind hole. The slot plates are respectively disposed in the wind holes. Each driving component is connected to two corresponding slot plates in the upper and lower rows which are arranged opposite to each other. The two slot plates are controlled by the driving component to pivot to close or open the corresponding two wind holes.

Abstract: Methods of laser processing a transparent material are disclosed. The method may include positioning the transparent material on a carrier and transmitting a laser beam through the transparent material, where the laser beam may be incident on a side of the transparent material opposite the carrier. The transparent material may be substantially transparent to the laser beam and the carrier may include a support base and a laser disruption element. The laser disruption element may disrupt the laser beam transmitted through the transparent material such that the laser beam may not have sufficient intensity below the laser disruption element to damage the support base.

Abstract: A manufacturing method for a band-shaped glass includes a forming step, which forms a band-shaped glass, an annealing step, which performs an annealing treatment on the band-shaped glass, a cooling step, which cools the annealed band-shaped glass, a direction-changing step, which changes a feeding direction of the cooled band-shaped glass from a longitudinal direction to a horizontal direction, and a horizontal conveying step, which conveys the band-shaped glass in the horizontal direction while supporting the band-shaped glass at a horizontal conveyance part. In the horizontal conveying step, the band-shaped glass is conveyed in the horizontal direction while a first propulsion for driving the conveyance in the horizontal direction is provided at both sides in the width direction of the band-shaped glass by the horizontal conveyance part, the first propulsion being larger than a second propulsion provided at a center in the width direction of the band-shaped glass.

Abstract: A method of reducing bubble lifetime on the free surface of a volume of molten glass contained within or flowing through a vessel including a free volume above the free surface, thereby minimizing re-entrainment of the bubbles back into the volume of molten glass and reducing the occurrence of blisters in finished glass products. The method includes vaporizing a volatile material, entraining the vapor in a carrier gas to form an enrichment gas, and flowing the enrichment gas into the free volume to increase a concentration of the volatile material at the surface of the molten glass in the vessel.

Abstract: Vaporizers and systems for vaporizing liquid precursor for forming glass optical fiber preforms are provided. The vaporizer includes an expansion chamber at least partially enclosed by a side wall, the expansion chamber comprising an upper end and a lower end with the side wall disposed between the upper end and the lower end. The vaporizer further includes a closed-loop liquid delivery conduit positioned in the expansion chamber proximate to the upper end of the expansion chamber, wherein the closed-loop liquid delivery conduit comprises a plurality of nozzles oriented to direct a spray of liquid precursor onto an inner surface of the side wall. Further, the vaporizer includes at least one supply conduit positioned proximate the upper end of the expansion chamber and coupled to the closed-loop liquid delivery conduit, and a vapor delivery outlet coupled to the expansion chamber and configured to direct vaporized liquid precursor from the expansion chamber.

Abstract: A method for manufacturing an optical element out of glass comprises placing a blank made of glass on an annular contact face of a supporting body having a hollow cross section. The blank is heated on the supporting body in a cavity of a protective cap that is arranged in a furnace cavity, such that a temperature gradient is established in the blank in such a way that the blank is cooler inside than on an outside region. The blank is press molded to form the optical element.

Abstract: The invention refers to a glass forming machine which includes a blank station for forming a parison (14) from a gob of molten glass (9) and a blow station for forming the parison (14) into a container (26) and an invert mechanism (16) which can move a neck ring (5) from the blank station to the blow station by a rotary motion and which further includes a swab robot and a control device for the swab robot, wherein the control device is set up so that the swab robot can swab and thus swab the neck ring (5) when the neck ring (5) is in an intermediate position between the blank station and the blow station. Defects in the production of bottles can thus be avoided.

Abstract: Disclosed herein are delamination resistant glass pharmaceutical containers which may include a glass body having a Class HGA1 hydrolytic resistance when tested according to the ISO 720:1985 testing standard. The glass body may have an interior surface and an exterior surface. The interior surface of the glass body does not comprise a boron-rich layer when the glass body is in an as-formed condition. A heat-tolerant coating may be bonded to at least a portion of the exterior surface of the glass body. The heat-tolerant coating may have a coefficient of friction of less than about 0.7 and is thermally stable at a temperature of at least 250° C. for 30 minutes.

Abstract: A glass melting furnace including a melt chamber configured to receive a glass melt which forms a glass melt top surface; at least one batch feeder configured to feed batch material into the melt chamber below a level of the glass melt top surface, the batch feeder arranged at a side wall, a back wall, or a bottom of the melt chamber, plural electrodes arranged in the melt chamber below the level of the glass melt top surface and configured to heat the glass melt, the electrodes spaced apart from each other, wherein the electrodes are arranged so that a flow with a horizontal and a vertical component of movement is created in the glass melt, wherein the electrodes are arranged so that a helical flow in the glass melt is created with an axis of rotation substantially perpendicular to the glass melt top surface.

Abstract: Methods for producing a glass sheet are provided. The methods can include forming a glass ribbon from molten glass, applying a polymer precursor to at least a portion of a first or second major surface of the glass ribbon, curing the polymer precursor to form a polymer coating, and separating the glass ribbon to produce at least one glass sheet. Glass ribbons and glass sheets produced by these methods are also disclosed.

Abstract: A continuous sol-gel process for producing silicate-containing glasses and glass ceramics is proposed, comprising the following steps: (a) continuously feeding a silicon tetraalkoxide, a silicon alkoxide with at least one non-alcoholic functional group and an alcohol into a first reactor (R1), and at least partially hydrolyzing by the addition of a mineral acid to obtain a first product stream (A); (b) continuously providing a second product stream (B) in a second reactor (R2) by feeding a metal alkoxide component or continuously mixing an alcohol and a metal alkoxide component; (c) continuously mixing product streams (A) and (B) in a third reactor (R3) for producing a presol to obtain a third product stream (C); (d) continuously adding water or a diluted acid to the product stream (C) to obtain a sol (gelation); (e) continuously filling the emerging sol into molds to obtain an aquagel; (f) drying the aquagels to obtain xerogels; (g) sintering the xerogels to obtain silicate-containing glasses and glass cera

Abstract: A production method and others according to the present embodiment are provided with a structure for effectively preventing occurrence of accidental spiking during drawing of a preform. In order to control the residual He-concentration in the center part of the preform, a transparent glass rod that has a predetermined outer diameter and is already sintered but is not doped with an alkali metal yet is annealed in in the atmosphere not containing He gas for an annealing time determined by referring to result data in which the relationship between the annealing time and the residual He-concentration is previously recorded for each outer diameter. In the result data, actually measured data of the residual He-concentration in a produced optical fiber preform and the annealing time are accumulated as annealing treatment results.

Abstract: A method of separating a transparent mother sheet includes contacting a first surface of the transparent mother sheet with an open ended pressure assembly including a pressure vessel shell, thereby forming a shell cavity defined by the first surface of the transparent mother sheet and the pressure vessel shell, where the transparent mother sheet comprises a damage path. The method also includes removing gas from the shell cavity through a fluid removal outlet extending through the pressure vessel shell to reduce a cavity pressure in the shell cavity, thereby applying stress to the damage path to separate a portion of the transparent mother sheet along the damage path.

Abstract: The invention relates to an apparatus for manufacturing mineral wool. The apparatus includes means (1) for producing molten mineral material, at least one fiberizing device (3) for forming fibres, into which fiberizing device the molten mineral material is fed (2) and by which fibres (12) are formed. The fiberizing device (3) comprises, rotationally arranged around a vertical axis (15), at least one fiberizing plate (13) having a vertical peripheral edge, into which are formed numerous small-sized holes (14), through which the molten material is led by centrifugal force to form fibres (12). Into the fiberizing device (3) are arranged elements to produce a vertical flow of blowing medium (16) to be led around the fiberizing plate (13), the flow causing the fibres (12) to turn downwards and, at the same time, to thin. Downstream the fiberizing device (3) is arranged a collection device (6), into which the formed fibres (12) are led and collected into a mat-like material.