Abstract:
Embodiments of thermally and chemically strengthened glass-based articles are disclosed. In one or more embodiments, the glass-based articles may include a first surface and a second surface opposing the first surface defining a thickness (t), a first CS region comprising a concentration of a metal oxide that is both non-zero and varies along a portion of the thickness, and a second CS region being substantially free of the metal oxide of the first CS region, the second CS region extending from the first surface to a depth of compression of about 0.17•t or greater. In one or more embodiments, the first surface is flat to 100 μm total indicator run-out (TIR) along any 50 mm or less profile of the first surface. Methods of strengthening glass sheets are also disclosed, along with consumer electronic products, laminates and vehicles including the same are also disclosed.
Abstract:
Optical fiber draw production systems, pressure devices, and methods of fabrication of optical fiber are disclosed. In one embodiment, a method of forming an optical fiber includes heating a preform to draw the optical fiber through a draw furnace, and passing the optical fiber through a pressure device while the optical fiber is still forming, wherein a pressure within the pressure device is greater than an atmospheric pressure.
Abstract:
A strengthened cover glass or glass-ceramic sheet or article as well as processes and systems for making the strengthened glass or glass-ceramic sheet or article is provided for use in consumer electronic devices. The process comprises cooling the cover glass sheet by non-contact thermal conduction for sufficiently long to fix a surface compression and central tension of the sheet. The process results in thermally strengthened cover glass sheets for use in or on consumer electronic products.
Abstract:
Embodiments of thermally and chemically strengthened glass-based articles are disclosed. In one or more embodiments, the glass-based articles may include a first surface and a second surface opposing the first surface defining a thickness (t), a first CS region comprising a concentration of a metal oxide that is both non-zero and varies along a portion of the thickness, and a second CS region being substantially free of the metal oxide of the first CS region, the second CS region extending from the first surface to a depth of compression of about 0.17●t or greater. In one or more embodiments, the first surface is flat to 100 μm total indicator run-out (TIR) along any 50 mm or less profile of the first surface. Methods of strengthening glass sheets are also disclosed, along with consumer electronic products, laminates and vehicles including the same are also disclosed.
Abstract:
A honeycomb extrusion die (100), a method of making the same, and an apparatus for forming the same. The die (100) includes: a feed hole plate (202) comprising an input surface (202A), an opposing output surface (202B), and feed holes (108) configured to guide a batch material from the input surface (202A) to the output surface (202B); and a pin assembly (204) comprising pins (300) disposed on the feed hole plate (202). At least one of the pins includes: a tail (304); a head (302) connected to the tail (304) and comprising alignment surfaces (314) configured to align the pins (300), flow surfaces (316) disposed between the alignment surfaces (314), and a tapered portion (310) comprising a contact surface (308) adhered to the output surface (202B) of the feed hole plate (202); and a first groove (306) disposed between the head (302) and the tail (304). In the pin assembly (204), the alignment surfaces (314) contact adjacent pins (300) to align the pins (300), such that discharge slots are at least partially defined by the tails (304) of the pins (300).
Abstract:
Method and apparatus are provided for the controlled transport of glass sheets (13) or glass ribbons (15) undergoing heating and/or cooling (e.g., thermal tempering) by conduction more than convection. The controlled transport is achieved by applying a gas-based force (17,19,21) to the glass sheet (13) or glass ribbon (15). The gas-based force (17,19,21) can move the glass sheet (13) or glass ribbon (15) in a desired direction and/or cause it to acquire a desired orientation. The gas-based force (17,19,21) can also cause the glass sheet (13) or glass ribbon (15) to retain a desired position and/or a desired orientation. The gas-based force (17,19,21) can be applied to the glass sheet (13) or glass ribbon (15) continuously or intermittently. Systems for transitioning a glass sheet (13) or a glass ribbon (15) between a heating zone (27) and a quench zone (31) are also discussed.
Abstract:
A strengthened cover glass or glass-ceramic sheet or article as well as processes and systems for making the strengthened glass or glass-ceramic sheet or article is provided for use in consumer electronic devices. The process comprises cooling the cover glass sheet by non-contact thermal conduction for sufficiently long to fix a surface compression and central tension of the sheet. The process results in thermally strengthened cover glass sheets for use in or on consumer electronic products.
Abstract:
A strengthened glass sheet product along with a process and an apparatus for strengthening a glass sheet are provided. The process comprises cooling the glass sheet by non-contact thermal conduction for sufficiently long to fix a surface compression and central tension of the sheet. The process results in thermally strengthened glass sheets having improved breakage properties.
Abstract:
Disclosed herein are systems for shaping a glass sheet comprising a roll conveyor comprising a plurality of rollers for conveying the glass sheet along a plane; a lift jet array comprising a plurality of nozzles, one or more of the plurality of nozzles comprising a tip having a plurality of orifices; and a shaping mold located above the roll conveyor, wherein the lift jet array is positioned below the roll conveyor such that each nozzle tip is located above the centerline of the plurality of rollers. Also disclosed herein are methods for shaping a glass sheet comprising heating the glass sheet and conveying the glass sheet on a roll conveyor to a position between the lift jet array and the shaping mold, wherein gas flows from the lift jet array with a force sufficient to lift the glass sheet from the roll conveyor.
Abstract:
A strengthened glass sheet product along with a process and an apparatus for strengthening a glass sheet are provided. The process comprises cooling the glass sheet by non-contact thermal conduction for sufficiently long to fix a surface compression and central tension of the sheet. The process results in thermally strengthened glass sheets having improved breakage properties.