Abstract: A situation where glass chip produced as a result of breakage of waste glass sheets floats in a cutting chamber when the waste glass sheets produced in glass sheet producing steps are collected is suppressed. Provided is a glass sheet production installation (1), in which a sheetshaped glass ribbon (B) is formed by supplying molten glass (A) into a forming body (2) and causing the molten glass (A) to flow downward on a conveyance path extending in an upper and lower direction from the forming body (2), and the glass ribbon (B) is cut into a predetermined dimension in a cutting chamber (6) provided on the conveyance path so that glass substrates (C) are produced.

Abstract: Methods for separating glass sheets from glass ribbons are disclosed. One method includes forming a glass ribbon having a curvature in a lateral direction. A conformable nosing is engaged with a first surface of the glass ribbon such that the conformable nosing conforms to the curvature of the glass ribbon. The glass ribbon is scored along a scoring line on a second surface of the glass ribbon. The conformable nosing is then at least partially disengaged from the first surface of the glass ribbon by adjusting a bow of the conformable nosing. A bending moment is applied to the glass ribbon to separate a glass sheet from the glass ribbon at the scoring line. Application of the bending moment conforms the curvature of the glass ribbon to the bow of the conformable nosing prior to the glass sheet separating from the glass ribbon.

Abstract: Methods and apparatus for controlling the stress in, and the shape of, the glass ribbon (15) formed in a downdraw glass manufacturing process (e.g., the fusion downdraw process) are provided. In certain embodiments, the control is achieved by cooling the bead portions (21a, 21b) of the ribbon (15) at a rate which provides a heat flux Q?b at the thickest part of the bead (23a, 23b) which is given by Q?b=Q?q+?Q?, where (i) Q?q is the heat flux at a transverse position adjacent to the bead portion (21a, 21b) at which the ribbon's thickness equals 1.05*tcenter, where tcenter is the final thickness at the ribbon's center line (17), and (ii) ?Q??(tb/tq?1)Q?q+10 kilowatts/meter2, where tb is the thickness of the thickest part of the bead portion. The cooling can take place along the entire length of the ribbon (15) or at selected locations, e.g.

Abstract: Provided is a manufacturing device (1) of a glass film, the device including: a forming apparatus (10) of a glass film ribbon (G) for forming molten glass or a glass base material for secondary processing into a glass film ribbon (G); a winding apparatus (20) for winding, into a roll shape, the glass film ribbon (G), which is drawn downward while being cooled; and a width direction cutting apparatus (30) for cutting the glass film ribbon (G) along its width direction at a position before being wound by the winding apparatus (20). A vertical distance (h) from the glass film ribbon (G) forming start position by the forming apparatus (10) to a glass film ribbon (G) cutting position by the width direction cutting apparatus (30) is set as five times or more of a dimension in the width direction of the glass film ribbon (G).

Abstract: Methods of fabricating glass sheets (13) are provided in which the sheets are cut from a glass ribbon (15) composed of a glass having a setting zone temperature range (SZTR). As the glass is drawn, it passes through the SZTR (31) and an across-the-ribbon temperature distribution is produced at least one longitudinal position along the ribbon to compensate for in-plane stress induced in the sheets (13) when flattened. Through such thermal compensation, glass sheets (13) are produced which exhibit controlled levels of distortion when cut into sub-pieces and thus are suitable for use as substrates in the manufacture of, for example, flat panel displays, e.g., LCD displays.

Abstract: A method of separating a moving glass ribbon to form an individual sheet of glass is disclosed comprising a plurality of nosing members that move in a direction and at a speed that the moving glass ribbon is moving. The nosing members can be positioned independently of each other, and can be positioned adjacent to but not in contact with the ribbon during the scoring operation to restrict out-of-plane movement of the glass ribbon (movement substantially transverse to the draw direction of the ribbon) during the separation phase of the process.

Abstract: A conformable nosing device is described herein which conforms to have a bowed shape that substantially matches a bowed shape of a glass sheet and which engages the glass sheet to help minimize the motion of the glass sheet and to help reduce the stress within the glass sheet while the glass sheet is being scored and separated into individual glass sheets. In addition, the conformable nosing device can include a passive nosing device which can be controlled to further help minimize the motion of the glass sheet while the glass sheet is being scored and separated into individual glass sheets.

Abstract: A glass sheet having enhanced edge strength. The glass sheet is down-drawn and has at least one laser-formed edge having a minimum edge strength of at least about 90 MPa. The laser-formed edge is substantially free of a chamfer or a bevel. The glass sheet can be strengthened after formation of the edge and is adaptable for use as a cover plate for display and touch screen applications, or as a display or touch screen for information-related terminal (IT) devices; as well as in other applications.

Abstract: Methods and apparatus for controlling the stress in, and the shape of, the glass ribbon (15) formed in a downdraw glass manufacturing process (e.g., the fusion downdraw process) are provided. In certain embodiments, the control is achieved by cooling the bead portions (21a, 21b) of the ribbon (15) at a rate which provides a heat flux Q?b at the thickest part of the bead (23a, 23b) which is given by Q?b=Q?q+?Q?, where (i) Q?q is the heat flux at a transverse position adjacent to the bead portion (21a, 21b) at which the ribbon's thickness equals 1.05*tcenter, where tcenter is the final thickness at the ribbon's center line (17), and (ii) ?Q??(tb/tq?1)Q?q+10 kilowatts/meter2, where tb is the thickness of the thickest part of the bead portion. The cooling can take place along the entire length of the ribbon (15) or at selected locations, e.g.

Abstract: A scoreless separation device and method are described herein for separating a glass sheet without needing to score the glass sheet. In one embodiment, the device shears a stationary glass sheet without needing to score the glass sheet. In another embodiment, the device shears a moving glass sheet to remove outer edges from the moving glass sheet without needing to score the moving glass sheet.

Abstract: A conformable nosing device is described herein which conforms to have a bowed shape that substantially matches a bowed shape of a glass sheet and which engages the glass sheet to help minimize the motion of the glass sheet and to help reduce the stress within the glass sheet while the glass sheet is being scored and separated into individual glass sheets. In addition, the conformable nosing device can include a passive nosing device which can be controlled to further help minimize the motion of the glass sheet while the glass sheet is being scored and separated into individual glass sheets.

Abstract: A method of high speed cutting of non-metallic materials (14), preferably glass and laminated glass, is described. In the inventive method a concentrated microwave radiation (1) with appropriate frequency and power density is chosen so as to accomplish heating of at least one selected area (2) of the body at the required separating propagation path (3) to required temperature in a selected short time while ensuring that this temperature is large enough to create a thermal stress (6) through the thickness of the selected area that results in the separating of the body material. In one embodiment of the invention a method of high speed cutting laminated glass is described wherein concentrated microwave radiation is used for delaminating adhesive film before the step of separating the glass body.

Abstract: A minute groove M1 is formed from one end 101a of a division-planned line 101 to the other end 101b thereof by use of a cutter 14A by moving a first working head A, and while the groove M is being irradiated with laser beam L, inspection is performed by use of an inspection device 15 to check whether or not a crack has propagated from the groove M1 and division has been performed. Storage means 13A stores the position of an undivided portion on the basis of a detection signal of this inspection device 15. Thereafter, after the backward movement of the first working head 7A, the undivided portion is again irradiated with laser beam L, with the above-described cutter 14A supported above, whereby the undivided portion is completely divided. Material glass 2 can be divided exactly according to the division-planned line 101 without forming a groove M double in the division-planned line 101.

Abstract: To provide a glass sheet incorporating a plurality of optical elements, which incorporates a plurality of glass optical elements and realizes higher productivity and uniform quality of glass optical elements. The glass sheet incorporating a plurality of optical elements includes a plurality of lens parts formed by molding a glass material, reference surface areas each of which is formed around an outer periphery of each lens part and is horizontal to the lens part, and connection parts each of which extends from one reference surface area and connects one lens part to another lens part, in which the connection part has a margin for facilitating separation of the glass sheet into a plurality of pieces.

Abstract: A method and apparatus for manufacturing patterned glass sheets. In certain embodiments, the resulting glass sheets have a pattern defined therein which is designed so as to simulate conventional glue chipped glass sheets or antique glass. A heated glass ribbon exits a furnace or melter and proceeds through a nip defined between opposing rollers. Pressure on one or both of the rollers in the direction of the nip, combined with a glue chipped simulating pattern or antique pattern defined in an exterior surface of at least one of the rollers, causes the pattern to be transferred from the roller(s) into/onto a surface(s) of the hot glass ribbon. After being patterned, the glass ribbon is annealed and cut into a plurality of different sheets.

Abstract: A data storage device is disclosed that includes a resistive cross point array of memory cells, a plurality of word lines, and a plurality of bit lines, and a sense amplifier that utilizes a cross-coupled latch sense circuit. The memory cells can be single cross points in one embodiment. In another embodiment, the memory cells are arranged into multiple groups of two or more memory cells. The memory cells of each group are connected between a respective word line and a common isolation diode that is coupled to a bit line.

Abstract: Described are substrates for magnetic media which have excellent surface properties as prepared directly from a slot drawdown glass sheet forming process. The substrate blanks cut directly from the glass sheet, as drawn, require little or no surface treatment for use as substrates for magnetic media, particularly hard disk drives. Also described are methods for preparing such substrates and methods for preparing magnetic media therefrom. Further described are the substrates and magnetic media prepared by such processes.

Abstract: A method of forming a photocatalytic coating includes depositing a precursor composition over at least a portion of a substrate surface by a coating device. The precursor composition includes a titania precursor material and at least one other precursor material having a metal selected from boron, strontium, zirconium, lead, barium, calcium, hafnium, lanthanum, and mixtures thereof. Sufficient other precursor material is added to the composition such that a molar ratio of the selected metal to titanium in the applied photocatalytic coating is in the range of about 0.001 to about 0.05.

Abstract: A method and apparatus for manufacturing patterned glass sheets. In certain embodiments, the resulting glass sheets have a pattern defined therein which is designed so as to simulate conventional glue chipped glass sheets or antique glass. A heated glass ribbon exits a furnace or melter and proceeds through a nip defined between opposing rollers. Pressure on one or both of the rollers in the direction of the nip, combined with a glue chipped simulating pattern or antique pattern defined in an exterior surface of at least one of the rollers, causes the pattern to be transferred from the roller (s) into/onto a surface (s) of the hot glass ribbon. After being patterned, the glass ribbon is annealed and cut into a plurality of different sheets.

Abstract: The invention relates to a process for the production of prestressed and/or bent glass elements.

Abstract: A method of making a glass multiwell plate for use in biological or chemical laboratory applications whereby the plate is formed by a single ribbon of molten glass passing twice over a mold such that the first section of glass takes the form of the mold and thereby forms the wells of the plate while the second section of glass covers the wells and forms a top surface of the plate. Holes are cut through the top surface, above each well to enable access.

Abstract: The present invention is directed to an apparatus and method for forming glass article from sheet glass. More specifically the apparatus comprises a mold, a plunger being cooperative alignment with the mold, wherein the mold and the plunger form a cavity exhibiting the shaped of the glass article, an outer trimmer for separating the glass article from the surrounding excess sheet glass, and an inner trimmer for forming the aperture in the glass article, and the method involves forming the aperture during the hot-forming process, therefore eliminating a post-formation step.

Abstract: The present invention is directed to an apparatus and method for forming glass article from sheet glass. More specifically the apparatus comprises a mold, a plunger being cooperative alignment with the mold, wherein the mold and the plunger form a cavity exhibiting the shaped of the glass article, an outer trimmer for separating the glass article from the surrounding excess sheet glass, and an inner trimmer for forming the aperture in the glass article, and the method involves forming the aperture during the hot-forming process, therefore eliminating a post-formation step.

Abstract: A process is described for producing a desired breaking point for breaking the glass wall of a glass body, in particular a break-open ampule or a tube, or for separating parts out of a pane of glass by generating microcracks in the breaking zone, in which process the microcracks are generated in the interior of the glass wall or the pane of glass.

Abstract: A method for molding optical glass elements including the steps of injecting molten glass material into a mold cavity through an injection port, runner and gate; cooling molten glass material in the mold cavity to a solidified state; and applying vibrations to solidified glass material in the mold cavity through a gate-forming member inserted into the mold assembly to form a gate to make a gate cut by concentration of stresses at boundary regions between the gate and the mold cavity.

Abstract: A glass-plate working apparatus includes: a glass plate carrying-in section; a main cut-line forming section disposed in proximity to the glass plate carrying-in section; a glass plate bend-breaking section disposed in proximity to the main cut-line forming section; a glass plate peripheral-edge grinding section disposed in proximity to the glass plate bend-breaking section; and a glass plate carrying-out section disposed in proximity to the glass plate peripheral-edge grinding section, wherein each of the main cut-line forming section, the glass plate bend-breaking section, and the glass plate peripheral-edge grinding section is arranged to concurrently process two glass plates.

Abstract: A method of producing mirrors comprising depositing onto a ribbon of hot glass during the production process a coating comprising at least one pyrolytic reflecting layer and at least two reflection enhancing layers, the last applied or outer of the enhancing layers also serving as a protective layer for the coating. The mirrors have a visible light reflection of at least 35% and less than 70% and exhibit a bright silver or chrome appearance. There is also a provided a mirror having such a coating.

Abstract: A glass-plate working apparatus 1 includes a glass plate carrying-in section 2; a glass plate bend-breaking section 3; a glass plate peripheral-edge grinding section 4; and a glass plate carrying-out section 5. The glass plate bend-breaking section 3 is provided with a supporting device 7 for supporting a glass plate 6 from the glass plate carrying-in section 2; a bend-breaking head device 11 for forming a main cut line 8 for bend-breaking and an edge cut line 9 on the glass plate 6, and for pressing positions 10, 10 on the glass plate 6 so as to bend-break the glass plate 6; and a bend-breaking head moving device 12 for moving the bend-breaking head device 11. The glass plate peripheral-edge grinding section 4 is provided with a supporting device 13 for supporting the glass plate 6; a grinding head device 15 for grinding a bend-broken edge 14 of the glass plate 6; and a grinding-head moving device 16 for moving the grinding head device 15.

Abstract: A layer of quartz glass soot is deposited continuously on a substrate consisting of quartz glass grains with a lower degree of sintering activity than the quartz glass soot and the soot is sintered by passing it continuously through a heating zone to form a quartz glass strip which is severed to form plates. Apparatus for implementing the process includes a conveyor suitable for the transport of quartz glass grains; a loading device for the deposition of the quartz glass grains onto the conveyor; nozzles for depositing a layer of synthetic quartz glass soot on the quartz glass grains; and a heating unit to heat the layer.

Abstract: This invention relates to first and second plate glass templates each having an outer smooth major surface and an inner rough major surface, only each of the major outer smooth surfaces being peripherally bounded by a chamfer formed at the cut edge. In this invention, the first and second templates are joined together with the rough surfaces in facing retention. The first and second plate glass templates may be used in forming a window.

Abstract: A method of producing mirrors comprising depositing onto a ribbon of hot glass during the production process a coating comprising at least one pyrolytic reflecting layer and at least one color modifying layer whereby the mirrors exhibit color in reflectance and have a visible light reflection of at least 35% and less than 70%. There is also provided a mirror having such a coating.

Abstract: A method and apparatus for producing a glass ware, such as a bowl or plate, via vacuum forming. A deformable glass ribbon is passed through a pair of parallel rolls or rollers, one of the rollers having a recessed cavity thereon for forming a thicker product zone and a thinner cullet zone on the glass ribbon. The product zone may be specifically configured to compensate for process stretching of the glass ribbon during the vacuum forming process. The product zone is registered over a vacuum mold, and a vacuum is applied to the mold to thereby deform the glass to a concave shape and thus form the dish. The dish is separated from the glass ribbon by trimming at the periphery of the dish.

Abstract: A glass sheet is cut while at a temperature at about its annealing point temperature by scoring the glass sheet along a line of cut and imparting a bending moment to the glass along the scored line to open the glass. The glass sheet remains at its elevated temperature throughout the cutting operation to reduce or eliminate additional heating required for subsequent processing.

Abstract: Glass shapes and sheets are cut directly from a heated glass ribbon while maintaining the optical quality of the cut glass. A float glass ribbon is removed from a glass forming chamber and prior to annealing, a line of cut is heated to its softening temperature. A blade arrangement thereafter penetrates the glass along the heated line of cut to sever the glass. The cut glass edge is shaped after cutting while the edge is still at the softening temperature. Duuring the line heating and cutting operation, the overall glass temperature is maintained above the strain point of the glass.

Abstract: Glass shapes and sheets are cut directly from a heated glass ribbon while maintaining the optical quality of the cut glass. A float glass ribbon is removed from a glass forming chamber and prior to annealing, a line of cut is heated to its softening temperature. A blade arrangement thereafter penetrates the glass along the heated line of cut to sever the glass. During the line heating and cutting operation, the overall glass temperature is maintained above the strain point of the glass.

Abstract: A sliding support table to support a continuously advancing glass ribbon during severing. The ribbon is supported by and moves over the sliding support table which moves along the direction of the glass ribbon travel between stationary upstream and downstream supports. Top and bottom line heaters supported on the table direct flames towards the major surfaces of the glass ribbon along a line cut. A blade and anvil arrangement supported on the table, sever the glass along the heated line of cut when the line of cut is positioned therebetween. The table advances along with the glass ribbon to support the ribbon during the heating and severing operation. The line heaters and blade and anvil arrangement may provide both a linear or nonlinear line of cut.

Abstract: A glass plate fabrication machine under automatic control comprises a work table moving linearly along the direction of feeding glass plates, a block moving linearly in the direction in perpendicular to the linear moving direction of the work table, a grinding station disposed to the block by means of a rotating device that rotates around an axis, as the center, vertical to each of the linear moving directions of the work table and the block, a cutting station disposed along with the line in parallel with the linear moving direction of the work table passing through the center of the axis for the rotating device on the block, a glass plate fixing block and a glass plate cutting table disposed on the work table at the positions corresponding to the grinding station and the cutting station respectively, and a cracking station supported on a machine base above the linearly moving work table between the grinding station and the cutting station for raising and cracking the glass plate.

Abstract: A method is disclosed for trimming a newly formed article from sheet glass while it is still in a semi-molten condition, by maintaining a peripheral portion of the sheet glass about the newly formed article out of contact with the mold so as to maintain its temperature, and then reducing the thickness of such peripheral portion without severing the same, and then cooling the thinned section to thermally crack-off and separate the newly formed article from the sheet glass.

Abstract: The instant invention is directed to the production of photochromic glasses having compositions consisting essentially, as analyzed in weight percent on the oxide basis, ofSiO.sub.2 --55-60Al.sub.2 O.sub.3 --9-10B.sub.2 O.sub.3 --19-20.5Li.sub.2 O--2-2.5Na.sub.2 O--2-3K.sub.2 O--6-7PbO--0.1-0.25Ag--0.1-0.15Cl--0.3-0.5Br--0.05-0.15CuO--0.0065-0.01The glasses are capable of being drawn into sheet and articles cut from the sheet simultaneously shaped and photochromic properties developed therein. The glasses display a clear luminous transmittance in excess of 90% when free from tint, a darkened luminous transmittance at 20.degree. C. below 25% when free from tint, and a fading rate at 20.degree. C. such that the glass demonstrates a faded luminous transmittance at least twice that of the darkened transmittance after a five-minute fading interval.

Abstract: A powder is applied to a glass ribbon as the ribbon is displaced between an annealing lehr and a cutting station. The powder on the ribbon facilitates removal of glass chips (1) generated during the cutting of the ribbon into sheets and (2) projected onto the top surface of the glass ribbon. The powder is applied by vaporizing same in a chamber and condensing the vaporized powder on or allowing the powder to condense in the chamber and fall on the top surface of the ribbon as it is displaced past the chamber.

Abstract: Method and apparatus for continually monitoring the surface temperature of a moving glass ribbon at a given distance from the edge of the ribbon where the ribbon moves through a critical portion of an annealing lehr where the rate of cooling determines whether the ribbon may be cut easily after annealing and whether the ribbon is subjected to spontaneous breakage during annealing.

Abstract: The industrial process hereinafter described begins with molten glass in which is imbedded a mesh for shatter-resistance, and is then extruded, cooled, and scribed in the size and shape of an injector-style razor blade. The scribed extrusion is inspected for quality control, after which is is broken along the scribed lines. The resulting glass razor blades are again inspected for quality control, after which they are packaged in whatever manner the manufacturer desires.

Abstract: The present invention relates to a method for cutting discrete sheets from a band or ribbon of glass such as emerges from the final stages of a float line or other glass production system. In accordance with the invention, a selected portion of an advancing band of glass in which a cut is to be made, which band is at a temperature of about 1000.degree. F or upward, and particularly in the range of about 1100.degree. to 1250.degree. F or more, is subjected to a moderate, controlled quench influence, scribed, and rapidly broken along the scribe line.

Abstract: This application teaches a method of producing an article of glass by cutting it out of a sheet of flat glass. Flat glass is formed in a glass ribbon forming apparatus and is discharged therefrom at a temperature in excess of 1000.degree.F. The hot flat glass is moved under at least a pair of focused laser beams which cut patterns in the glass having a common starting and ending point. In such a manner, a glass article is cut from the ribbon. The article is removed from the remaining portion of the ribbon and cooled in a controlled manner to produce a final glass article. The cooling operation may be rapid or slow so as to produce a tempered or an annealed article.