Schott Ag

Schott Glas

Andreas Habeck

Jürgen Vogt

Andreas Ortner

Clemens Ottermann

Thomas Wiegel

Thomas Rossmeier

Ulrich Lange

Rainer Liebald

Kurt Nattermann

Thomas Roßmeier

Roland Buerkle

Stephan Zachmann

Torsten Otto

Oliver Scherer

Fabian Wagner

Thilo Zachau

Markus Heiss-Chouquet

Stephan Behle

Feng He

Ning Da

Volker Plapper

Volker Seibert

Bernd Hoetzel

Helga Goetz

Klaus Gerstner

Pengxiang Qian

Georg Haselhorst

Dirk Förtsch

Christian Breitbach

Markus Heiß-Chouquet

Frank Macherey

Stephan Corvers

Ortrud Perathoner

Ulrich Battmer

Uwe Wilkens

Patrick Markschlaeger

Stefan Haase

Patrick Markschläger

A method for producing long-term bendable glass material includes: bending a glass material in a bending radius in a range of 1 mm to 10mm; storing the bent glass material for a time period of at least 1 day; inspecting at least a portion of the bent glass material for damage after the storing; and classifying the inspected bent glass material as a reject if damage is detected or as a long-term bendable glass material if no damage is detected.

Long-term bendable glass material, and method for the production of a long-term bendable glass material

An improved method and an improved apparatus are provided for producing a thin glass ribbon, which provide borders at the edges of the ribbon. The edges formed are of high mechanical quality and a formation of new secondary borders after the severing or at least the thickness of such secondary borders is reduced compared to the original borders. The method includes drawing the thin glass ribbon from a molten glass or from a preform, severing the borders, and cooling the resulting glass ribbon. The severing is effected at a location along the moving direction of the thin glass ribbon and at a time at which during the cooling of the thin glass ribbon the viscosity of the glass is in a range from 10dPa·s to 10dPa·s, so that the edges of the thin glass ribbon newly produced by the severing of the borders are rounded off.

Method and apparatus for producing a thin glass ribbon, and thin glass ribbon produced according to such method

A glass ribbon in the form of a glass roll is provided that is optimized with respect to the requirements of a long service life and at the same time compact dimensions. A bending radius on the inner side of the thin glass roll is determined by performing breakage tests on samples of the glass material, statistical parameters are determined on the basis of the breakage tests, and the statistical parameters are converted into a range of bending radii which meet the requirements on service life and the most compact dimensions possible of the thin glass roll.

Thin glass roll and method for producing same

A method is provided for preparing transparent workpieces for separation. The method includes generating aligned filament formations extending transversely through the workpiece along an intended breaking line using ultra-short laser pulses.

Separation of transparent workpieces

An improved method and an improved apparatus are provided for producing a thin glass ribbon, which provide borders at the edges of the ribbon. The edges formed are of high mechanical quality and a formation of new secondary borders after the severing or at least the thickness of such secondary borders is reduced compared to the original borders. The method includes drawing the thin glass ribbon from a molten glass or from a preform, severing the borders, and cooling the resulting glass ribbon. The severing is effected at a location along the moving direction of the thin glass ribbon and at a time at which during the cooling of the thin glass ribbon the viscosity of the glass is in a range from 10dPa&#xb7;s to 10dPa&#xb7;s, so that the edges of the thin glass ribbon newly produced by the severing of the borders are rounded off.

A method for cutting a thin glass including the steps of guiding, by a transport device, the thin glass ribbon over a levitation support, and directing, within a range of the levitation support, a laser beam onto the thin glass ribbon, which heats up the thin glass ribbon at an impingement point of the laser beam. The method also includes the step of blowing, by a cooling jet generator, a cooling fluid onto the track heated by the laser beam so that a region heated by the laser beam is cooled down and a mechanical stress is created. The cooling fluid contains vapor of a liquid at a saturation ratio of at least 0.5 or a plurality of liquid droplets. The liquid droplets form a contact angle on a surface of the thin glass ribbon which is smaller than that of water on the same surface.

Method and apparatus for continuously cutting glass

A glass roll, as well as a device and a method for manufacturing the glass roll are provided. The glass roll includes a glass ribbon having a thickness, a length in an x-direction, and a width in a y-direction. The glass ribbon has at least one defect site at a position, as well as at least one error mark disposed on the glass ribbon, and is wound up into a glass roll.

Glass roll, product having a glass roll, device and method for the manufacture thereof

The invention concerns a method for separating plate-shaped workpieces of mechanically brittle and nonmetal materials along any contour desired, comprising the following steps:

Method and device for separating plates from mechanically brittle and nonmetal materials

A method for the production of protection devices is provided. The method includes the step of providing a tile package. The provision of the tile package includes the steps of: laminating at least one board of a tile material onto a polymer foil; scoring the board on the side which is opposite to the polymer foil; and fracturing the board along the scoring lines for achieving a plurality of tiles which are fixed on the polymer foil.

Method for the production of a protection device

The method of dividing a glass substrate into separate pieces includes producing a crack along a dividing line on the substrate and acting on the crack with an aqueous cutting liquid during or immediately after producing the crack. The aqueous cutting liquid used in the method has a special composition that reduces the breaking forces applied to the glass substrate in order to divide it. The aqueous liquid contains an ionic organic compound, which has a cation with a positively charged nitrogen atom and a hydroxyl anion. Quaternary ammonium hydroxide compounds are especially preferred as the ionic organic compound.

Method of dividing glass into separate pieces with the aid of a cutting liquid and improved cutting liquid for said method

A method and an apparatus for cutting a laminate made of a brittle material and a plastic with a cutting tool is described. The plastic is heated up, thereby lowering its viscosity, at least in the region of a predetermined cutting line. A cutting tool is placed onto the plastic side of the laminate, the loading pressure being adjustable. By moving cutting tool relative to the laminate along the predetermined cutting line, the plastic is severed; at the same time the brittle material is scored, thereby inducing a mechanical stress. If appropriate, the mechanical stress along the cutting line is subsequently increased to exceed the rupture strength of the scored brittle material. A preferred application is the cutting of thin glass or glass-ceramic/plastic laminates.

Method and apparatus for cutting a laminate made of a brittle material and a plastic

The apparatus for cutting a laminate, which is made of a brittle material and a plastic, has a cutting tool for severing the plastic along a predetermined cutting line and simultaneously scoring the brittle material; a heating device for heating the plastic along the cutting line; a device for pressing the cutting tool with an adjustable pressure on the laminate; a device for moving the engaged cutting tool along the cutting line to simultaneously sever the plastic and score the brittle material and a controller for controlling the heating device so that during the severing and scoring a temperature of the cutting tool is maintained constant and the heating is sufficient to lower viscosity of the plastic along the cutting line so that a predetermined loading pressure of the cutting tool on the laminate necessary for simultaneously scoring the brittle material and severing the plastic is not exceeded, whereby uncontrollable fracture of the brittle material does not occur.

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Undenheim, Germany

Andreas Habeck