Abstract: Provided is a method for producing a glass material by a containerless levitation technique, which enables production of a large-sized glass material.

Abstract: Provided is a method for producing a glass material by a containerless levitation technique, which enables production of a large-sized glass material.

Abstract: Provided is a method for producing a glass material by a containerless levitation technique, which enables production of a large-sized glass material.

Abstract: Provided is a method for producing a glass material by a containerless levitation technique, which enables production of a large-sized glass material.

Abstract: Provided is a method that can manufacture a glass plate having a curved surface shape with high surface accuracy even without polishing the surface after forming and a glass plate manufactured by the method.

Abstract: Provided is a mobile-display cover glass less susceptible to damage from impact caused upon dropping of a mobile display. A mobile-display cover glass (1) is a mobile-display cover glass configured to cover a display region (2a) and at least a portion of a side surface (2b) of a mobile display (2). The mobile-display cover glass (1) includes a flat sheet-like front portion (11) and a side portion (12, 13). The front portion (11) is configured to be disposed in front of the display region (2a). The front portion (11) extends in a first direction and a second direction perpendicular to the first direction. The side portion (12, 13) is configured to be disposed lateral to the mobile display (2). The side portion (12, 13) includes a bent portion (12a, 13a). The bent portion (12a, 13a) bends backward from one end of the front portion (11) in the first direction. A corner (12c, 13c) of the side portion (12, 13) has a rounded shape.

Abstract: Provided is a method capable of producing a glass sheet with a bent portion in which a flattened portion has high flatness and high smoothness. A flat glass sheet 20 is radiationally heated with a first portion 21 thereof held between first and second heat-insulating members 31, 32. And then, a second portion 22a, 22b of the flat glass sheet 20 not held between the first and second heat-insulating members 31, 32 is bent.

Abstract: Provided is a method capable of producing a glass sheet with a bent portion in which a flattened portion has high flatness and high smoothness. A flat glass sheet 20 is radiationally heated with a first portion 21 thereof held between first and second heat-insulating members 31, 32. And then, a second portion 22a, 22b of the flat glass sheet 20 not held between the first and second heat-insulating members 31, 32 is bent.

Abstract: Provided are a method that can manufacture a glass plate having a curved shape by a simple process and with high surface accuracy, a glass plate manufactured by the method, and an apparatus for manufacturing a glass plate having a curved shape. A method for manufacturing a glass plate having a curved shape includes the steps of: preparing an original glass plate (10); elastically deforming the original glass plate (10); and heating the original glass plate (10) being elastically deformed to plastically deform the original glass plate (10) and thus give the original glass plate (10) the curved shape.

Abstract: Provided is a method that can manufacture a glass plate having a curved surface shape with high surface accuracy even without polishing the surface after forming and a glass plate manufactured by the method.

Abstract: Provided is a method that can manufacture a large-sized glass material by containerless levitation. A glass raw material block (13) is placed on a forming surface (11a) having a plurality of gas jet holes (12a) opened thereto, gas is jetted through the plurality of gas jet holes (12a) to hold the glass raw material block (13) levitated above the forming surface (11a), and the glass raw material block (13) held levitated above the forming surface (11a) is melted by heat and then cooled to obtain a glass material.

Abstract: Provided is a display cover glass having less surface defects. A forming step is performed with a cushioning member (30) elastically deformable in a thickness direction disposed between a first forming die (26) and a flat glass sheet (50).

Abstract: Provided is a display cover glass having high shape accuracy. A forming step is performed in a state where a portion of a flat glass sheet (50) corresponding to a bent portion (12a) of the cover glass (1) is at a viscosity enabling plastic deformation and elastic deformation to occur therein when an end portion of the flat glass sheet (50) is deformed.

Abstract: Provided is a mobile-display cover glass less susceptible to damage from impact caused upon dropping of a mobile display. A mobile-display cover glass (1) is a mobile-display cover glass configured to cover a display region (2a) and at least a portion of a side surface (2b) of a mobile display (2). The mobile-display cover glass (1) includes a flat sheet-like front portion (11) and a side portion (12, 13). The front portion (11) is configured to be disposed in front of the display region (2a). The front portion (11) extends in a first direction and a second direction perpendicular to the first direction. The side portion (12, 13) is configured to be disposed lateral to the mobile display (2). The side portion (12, 13) includes a bent portion (12a, 13a). The bent portion (12a, 13a) bends backward from one end of the front portion (11) in the first direction. A corner (12c, 13c) of the side portion (12, 13) has a rounded shape.

Abstract: Provided is a method capable of producing a glass sheet with a bent portion with a high form accuracy. A reinforced glass sheet 1 with a flattened portion 11 and bent portions 12a and 13a continued to the flattened portion 11 is produced. A reinforcement step and a deformation step are performed. At the reinforcement step, a flat glass sheet is chemically reinforced to obtain a reinforced flat glass sheet 50. At the deformation step, the reinforced flat glass sheet 50 is heated and deformed to obtain the reinforced glass sheet 1 with the flattened portion 11 and the bent portions 12a and 13a.

Abstract: Provided is a method capable of producing a glass sheet with a bent portion in which a flattened portion has high flatness and high smoothness. A flat glass sheet 20 is radiationally heated with a first portion 21 thereof held between first and second heat-insulating members 31, 32. And then, a second portion 22a, 22b of the flat glass sheet 20 not held between the first and second heat-insulating members 31, 32 is bent.

Abstract: Pad portions are respectively integrally protruded to be formed on an outer surface of a substantially funnel-shaped sidewall portion of the glass funnel for projection. A ridgeline for a reference end face formed on the pad portion comprises a first curved portion to form a top portion and second curved portions to form rising portions. The first curved portion and the second curved portions are smoothly continuous to each other without bending portions. The second curved portion is smoothly continuous to the outer face of the sidewall portion without bending portions.

Abstract: Pad portions are respectively integrally protruded to be formed on an outer surface of a substantially funnel-shaped sidewall portion of the glass funnel for projection. A ridgeline for a reference end face formed on the pad portion comprises a first curved portion to form a top portion and second curved portions to form rising portions. The first curved portion and the second curved portions are smoothly continuous to each other without bending portions. The second curved portion is smoothly continuous to the outer face of the sidewall portion without bending portions.