Schott Ag

Schott Glas

Christian Kunert

Andreas Langsdorf

Uwe Kolberg

Jochen Alkemper

Thilo Zachau

Lutz Klippe

Thomas Schmiady

Armin Vogl

Rüdiger Dietrich

Michael Meister

Peter Brix

Werner Kiefer

Karin Naumann

Norbert Greulich-Hickmann

Ulrich Peuchert

Franz Ott

Bernd Hoppe

Ute Woelfel

Ulrich Lange

Roland Leroux

Doris Moseler

Volker Ohmstede

Volker Plapper

Hildegard R&ouml;mer

Hartmut Paschke

Hildegard Römer

Erhard Dick

Gerhard Lautenschläger

Roland Fuchs

Magdalena Winkler-Trudewig

Paul Kissl

Reiner Bartsch

Michael Bug

Ralf Bonitz

Andreas Morstein

Erich Fischer

Susanne Kessler

Frank Büllesfeld

Rainer Adebahr

Polina Ebeling

Ottmar Becker

Matthias Redey

Dirk Weidmann

Sabine Lehnicke

Hildegard Roemer

Johannes Roettgers

Markus Riedel

Martin Zimmermann

Carsten Weinhold

Roman Oberhaensli

Ute Wolfel

Alwin Weitzel

Michael Plapp

Friedrich Lampart

Manfred-Josef Borens

Peter Franke

Gerald Wasem

Joachim Dietrich Kehl

Frank Jürgen Druschke

A thin glass substrate, as well as a method and an apparatus are provided. The glass substrate has a glass having first and second main surfaces and elongated elevations on one of the main surfaces. The elevations rise in a normal direction, have a longitudinal extent that is greater than two times a transverse extent, and have a height, on average, that is less than 100 nm, and with a transverse extent of the elevation smaller than 40 mm. The method includes melting a glass, hot forming the glass, and adjusting a viscosity of the glass so that for the viscosity η1 for a first stretch over a first distance of up to 1.5 m downstream of a flow rate control component and y1 indicating a second distance to a location immediately downstream the flow rate control component the equation lg η1(y1)/dPa·s=(lg η01/dPa·s+a1(y1)) applies.

Thin glass substrate, method and apparatus for its production

Thin glass substrates are provided. Also provided are methods and apparatuses for the production thereof and provides a thin glass substrate of improved optical quality. The method includes, after the melting and before a hot forming process, adjusting the viscosity of the glass that is to be formed or has at least partially been formed is in a defined manner for the thin glass substrate to be obtained. The apparatus includes a device for melting, a device for hot forming, and also a device for defined adjustment of the viscosity of the glass to be formed into a thin glass substrate, and the device for defined adjustment of the viscosity of the glass to be formed into a thin glass substrate is arranged upstream of the device for hot forming.

Thin glass substrate, in particular a borosilicate glass thin glass substrate, method and apparatus for its production

The device for blank pressing glass bodies includes a first rotary indexing table with preforms for forming parisons from glass gobs; a second rotary indexing table having pressing molds and pressing tools for pressing the parisons into final form after formation in the preforms; and a device for shifting the first rotary indexing table relative to the second rotary indexing table so that each preform is positionable in a transfer position between a pressing tool and a pressing mold. Each preform is mounted on the first rotary indexing table by a indexable mount for holding it in a first horizontal position or in a second position pivoted away from the first position, so that, when a preform is in the transfer position, the indexable mount can be pivoted, so that a parison in it drops into the pressing mold for pressing by the pressing tool.

Device for blank pressing optical glass bodies

The invention relates to a method for shaping a tubular object made of glass or glass ceramics or any other thermoplastic material, comprising the following method steps:

Method and an apparatus for shaping a tubular object made of thermoplastic material

A process for shaping a body with elongate structures on its surface, bodies produced using the process, and to apparatuses having these bodies are provided. For this purpose, a preform is provided, at the surface, with structures which are elongate along one direction, the preform is heated at least in one region and the preform is drawn in the heated state until at least part of the preform has adopted a cross section which substantially corresponds to the desired cross-sectional shape or final cross-sectional shape. The preform is heated by means of radiation which has a spectral distribution which is such that at most half of the radiation power is absorbed during a single pass through the material.

Method and device for shaping a structured body and body produced according to said method

An apparatus for press-forming a molten gob made of meltable material, especially of glass or glass ceramics, into a body of specific shape with compression moulds which form with each other a form cavity for receiving the gob. The compression moulds consist at least in the zone of the forming surfaces of an open-pore material and the compression moulds are connected to a pressure gas source in order to produce a gas stream which emerges from the forming surfaces. The open-pore material of the forming surfaces the pores close to the forming surfaces are smaller than the pores remote from the forming surfaces.

Apparatus for press-forming molten bodies

The invention concerns a device for supporting a horizontal guided, continuous glass strand;

Device for supporting a horizontal guided glass strand

A structural component for a device for the treatment of melts, especially of glass melts, having a base body of metal or of a metal alloy and a cooling system in which a cooling medium is led through the structural component for the leading-off of heat. The base body is provided with a coating of a material the decomposition temperature of which lies below the temperature of the melt, and the cooling system is designed and arranged in such manner that the temperature of the boundary layer of the melt that immediately surrounds the structural component lies below the decomposition temperature of the coating material.

Coating of cooled devices

A device for supporting a ribbon of glass, having at least one roller arranged in an area of an underside of the ribbon of glass. In order to keep a ribbon of glass as free as possible of mechanical damage during production, at least one support device is assigned to the roller. With an actuating device the roller or the support device can selectively be contacted with the underside of the ribbon of glass, wherein the support device is in contact, at least in some areas, with the underside of the ribbon of glass by way of a gas cushion. The rollers are then employed at the start of production or after a ribbon of glass has snapped off in order to transmit an advancement force to the ribbon of glass.

Device for supporting a ribbon of glass

An alkaline-earth aluminosilicate glass having a composition (in % by weight, based on oxide) of SiO&#x3e;55-64; AlO13-18; BO0-5.5; MO 0-7; CaO 5.5-14; SrO 0-8; BaO 6-17; ZrO0-2; CeO0-0.3; TiO0-0.5; CoO 0.01-0.035; FeO0.005-0.05; and NiO 0-0.03 is suitable for use in lamp bulbs

Alkaline-earth aluminosilicate glass, containing CA and BA, suitable for use in lamp bulbs, and a lamp bulb containing same

This invention relates to a device and a process for introducing gases into a hot medium, whereby device () contains a pipe () for introducing gas and a cooling jacket () that encases pipe ().

Device and process for introducing gases into a hot medium

A device for manufacturing glass gobs includes a membrane body of a porous gas transmitting material. Channels for introducing compressed gas into the membrane body extend through the membrane body material and are spaced at a distance from the gas outlet surface of the membrane body. The channels run parallel to or are at an acute angle to the outlet surface. In an alternate embodiment, the channels are open channels at the opposite surface from the outlet surface.

Device for manufacturing glass gobs

Method for the hot shaping of molten gobs

The borosilicate glass has a hydrolytic stability class of 1, an acid resistance class of 1 and a lye resistance class of at least 2 and a composition (in % by weight, based on oxide) of SiO 70.5-76.5; B O 6.5-<11.5; Al O 4-8; Li O 0.5-2; Na O 4.5-9; K O 0-5; with Li O&plus;Na O&plus;K O 5.5-10.5; MgO 0-1; CaO 0-2; and CeO 0-1, and optionally refining agents. This borosilicate glass is preferably free of As O , Sb O and BaO and is then especially advantageous as a pharmaceutical packaging material. It also may contain up to 3% by weight TiO to block UV radiation. The borosilicate glass may include up to 0.5% by weight ZrO to reach a lye resistance class of 1.

Borosilicate glass with high chemical resistance and use thereof

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Mainz, Germany

Christian Kunert