Abstract:
Provided herein is a method for producing glass-ceramic sheets. The method includes texturing at least one surface of a first glass sheet, and stacking the first glass sheet and a second glass sheet. The first glass sheet and the second glass sheet are stacked so that the textured surface of the first glass sheet contacts a surface of the second glass sheet. The first and second glass sheets are cerammed. After cooling, the cerammed first and second glass sheets are separated. Also provided is a pre-form for producing glass-ceramic sheets. The pre-form includes a first glass sheet having a textured surface, and a second glass sheet contacting the first glass sheet. The textured surface of the first glass sheet is in contact with a surface of the second glass sheet.
Abstract:
Foam glass developed under vacuum is continuously formed into a slab while being cladded on its major sides and longitudinal edges with sheet metal. The metal claddings or facings for the two major sides of the slab are held under tension during the solidifying of the slab body. End plates are inserted transversely through the product at specified points during its movement and sections of the continuous product are cut to length, whereby the sections are prestressed partly as a result of compression along two axes caused by differing coefficients of expansion of the cladding and foam glass body and partly to atmospheric compression of the product on a third axis perpendicular to its major sides. Modified forms of the product eliminate the metal cladding or skin entirely or provide the same as a cast-on coating without mechanical prestressing.
Abstract:
A method includes scoring a glass sheet to form a scored region of the glass sheet. The scored region extends in a longitudinal direction and comprises a plurality of deep score portions and a shoulder portion disposed longitudinally between adjacent deep score portions. The glass sheet is severed along a severing line extending in a transverse direction substantially perpendicular to the longitudinal direction and through the shoulder portion of the scored region.
Abstract:
Provided herein is a method for producing glass-ceramic sheets. The method includes texturing at least one surface of a first glass sheet, and stacking the first glass sheet and a second glass sheet. The first glass sheet and the second glass sheet are stacked so that the textured surface of the first glass sheet contacts a surface of the second glass sheet. The first and second glass sheets are cerammed. After cooling, the cerammed first and second glass sheets are separated. Also provided is a pre-form for producing glass-ceramic sheets. The pre-form includes a first glass sheet having a textured surface, and a second glass sheet contacting the first glass sheet. The textured surface of the first glass sheet is in contact with a surface of the second glass sheet.
Abstract:
A method includes forming a continuous ribbon of glass. The continuous ribbon includes a first surface, a second surface opposite the first surface, a first edge region, a second edge region opposite the first edge region, and a central region extending between the first edge region and the second edge region. Each of the first edge region and the second edge region has a greater thickness than the central region of the continuous ribbon. An indented pattern is formed longitudinally along the first edge region of the continuous ribbon by forming a first series of indentations in the first surface of the continuous ribbon and forming a second series of indentations in the second surface of the continuous ribbon. The indented pattern includes intermediate segments interconnected with one another by web by webs. Each intermediate segment is thicker than adjacent webs.
Abstract:
A method of producing glass sheets includes the step of fusion drawing a glass ribbon along a draw direction into a viscous zone downstream from a root of a forming wedge. The method further includes the step of drawing the glass ribbon into a setting zone downstream from the viscous zone, wherein the glass ribbon is set from a viscous state to an elastic state. The method further includes the steps of drawing the glass ribbon into an elastic zone downstream from the setting zone and stabilizing a region of the glass ribbon in the elastic zone along a width of the glass ribbon extending transverse with respect to the draw direction. A predetermined pressure differential between a first side and a second side of the glass ribbon is used to create the stabilized region. The method further includes the step of cutting a glass sheet from the glass ribbon, wherein the stabilized region inhibits shape instabilities from propagating upstream through the glass ribbon to the setting zone.
Abstract:
Systems, methods, apparatus and products relate to display glass from curved glass ribbons, to improve shape stability in glass ribbons, to creation of reduced stress glass ribbons, and to creation of improved shape stability and reduced stress of display glass, which may include forming slightly a curved glass ribbon in a fusion draw machine (FDM). One or more embodiments may include an isopipe having a desired curvature; an isopipe having a desired incline; an offset draw device operable to draw the glass ribbon in an inclined ribbon draw direction; one or more air jets or vacuum operable to apply air pressure to a first side of the glass ribbon, thereby creating a pressure differential on the first side; and/or one or more electrostatic force generators operable to apply electrostatic force to a first side of the glass ribbon, thereby generating an electric field differential across the glass ribbon.