Schott Ag

Schott Pharma Ag & Co Kgaa

Schott Pharma Schweiz Ag

Doris Moseler

Robert Frost

Ulrich Lange

Andreas Langsdorf

Frank-Thomas Lentes

Thilo Zachau

Günter Weidmann

Roman Huhn

Jens Ulrich Thomas

Frank Buellesfeld

Alexander Glacki

Bernhard Hunzinger

Frank Büllesfeld

Bernhard Hladik

Boban Markovic

Christian Kunert

Inka Henze

Otmar Becker

Volker Seibert

Alexander Humbertjean

Volker Rupertus

Lothar Willmes

Jörg Witte

Ralf Bonitz

Axel Ohlinger

Tobias Wetzel

Robert Kruse

Ulrike Stöhr

Rainer Adebahr

Polina Ebeling

Michael Waschbüsch

Dirk Weidmann

Bernd Rüdinger

Matthias Redey

Markus Heiss

Heike Brack

A glass container is provided that includes a tube, a circular bottom, and a longitudinal axis. A curved glass heel extends from an outer end the bottom to the first end of the tube. The outer surface has a topography defined by a function ĥ(x) that is an azimuthal average of a distance between a contact plane and the outer surface at any given position located on a circle having the centre and the radius |x|. The values ĥ for ĥ(x) are determined for a plurality of circles the radius of which increases stepwise by 500 μm starting with a circle around the centre having a radius of 500 μm. The values ĥ are determined in a range from x=−0.4×d/2 to x=+0.4×d/2, dhaving a size such that at least 4 values ĥ are determined and can be fitted with a curvature function

Glass container comprising a glass bottom with improved properties

A process for preparing a glass container that includes: providing a glass tube with a first portion, a second portion, and a longitudinal axis (L); holding the first portion in a first clamping chuck and the second portion in a second clamping chuck; rotating the glass tube around the longitudinal axis (L); heating, via a heater, the glass tube above a glass transition temperature; separating the first and second portions from one another by pulling apart along the longitudinal axis (L) while the heated glass tube is still rotating by moving the first and the second chucks away from each other; and moving the heater, while moving the first and second chucks away from each other, so that the heater follows a mass that remains at a circular end region of the first and/or second portion.

Bottom forming process

The present disclosure provides a device and a method with which flat glasses with particularly uniform thickness can be obtained. The methods are drawing methods in which a glass ribbon is drawn. In the method an aperture is used which allows a defined very small slit between the glass ribbon and the aperture also in the case of a change of the position of the glass ribbon.

Device and method for the production of a flat glass

A glass container is provided that includes a tube, a circular bottom, and a longitudinal axis. A curved glass heel extends from an outer end the bottom to the first end of the tube. The two-dimensional distance h(x,y) between a contact plane and the outer surface. The two-dimensional distance is measured in a direction parallel to the axis. The slope magnitude of the outer surface at the given position x,y is given by&#x221a;{square root over ((dh/dx)+(dh/dy))}.The 75% quantile of values that have been determined for the term&#x221a;{square root over ((dh/dx)+(dh/dy))}&#xd7;d1/h(xy)for all given positions x,y within a circular area having a radius of 0.4&#xd7;d/2 and that correspond to the centre is less than 4100 &#x3bc;m/mm. The adjacent positions x,y increase stepwise by 200 &#x3bc;m, and h(x,y)=h(x,y)&#x2212;h(x,y), h(x,y)is a maximum value for h(x,y) and h(x,y)is a minimum value for h(x,y) being determined in that circular area.

An apparatus for shaping a workpiece made of glass using minimum lubrication is provided. The apparatus includes device for heating the workpiece, a shaping station with at least one forming tool for shaping the workpiece, and at least one spray nozzle for applying an oil as a lubricant onto the surface of the forming tool. The forming tool exhibits heat dissipation such that the temperature on the contact surface of the forming tool during the shaping process is kept below 300&#xb0; C. The amount of oil dispensed by the spray nozzle per forming step and application instance is less than 0.1 g.

Method and apparatus for shaping a glass workpiece with minimal lubrication

A process for producing a glass article is provided that includes, in order, a first process step in which a surface of the glass article has a temperature of at least 400&#xb0; C. for at least some of the time, a second process step in which the surface of the glass article has a temperature of more than 10&#xb0; C. and less than 100&#xb0; C. and the surface is brought into contact with water or water vapor and the surface of the glass article is supplied with an amount of water which corresponds to a water layer thickness of from 1 to 100 &#x3bc;m, and a third process step in which the glass article is processed further with contact of the surface with foreign materials or other glass articles.

Method for producing a glass article

A flexible method of controlling the thickness of a material ribbon, in particular a glass ribbon, as well as an apparatus to implement such a method. To this end, a material in a heated and softened state is drawn into a ribbon and is then cooled down. During the forming process during which the ribbon is formed and drawn, the material is heated. During the forming process thermal energy at least partially in the form of thermal radiation that is emitted from a surface of a heated heating element. that is located opposite the material, is supplied to the material. Heating of heating element occurs at least partially through the energy of a laser beam that is directed onto heating element, thereby locally heating the heating element.

Method and apparatus for thickness control of a material ribbon

A method for producing ceramizable green glass components provided, as well as apparatus for performing such method and ceramizable green glass components producible by such method. The method is a redrawing process in which a preform is heated, in a deformation zone, to a temperature that enables redrawing of the glass. The deformation zone is particularly small, which permits redrawing of the ceramizable green glass bodies while avoiding ceramization during the redrawing. The method provides plate-like or sheet-like green glass components that have a particularly smooth surface.

Method for producing a ceramizable green glass component, and ceramizable green glass component, and glass ceramic article

A method for producing a glass film is provided. The method includes: heating a portion of a glass preform so that in the heated portion the glass has a viscosity of less than 10dPa&#xb7;s, or drawing a glass from a melt; withdrawing the glass using a drawing device, wherein in case of drawing from a preform the drawn glass film is thinner than the glass preform; heating at least one point by means of a laser, the point being located in an edge region of the drawn glass film that is being formed by withdrawing the glass, wherein at the site of the laser focus the glass has a viscosity of not more than 10dPa&#xb7;s before the laser is switched on and wherein heating is performed in such a manner that at least one notch is provided in parallel to the drawing direction.

Glass film with specially formed edge, method for producing same, and use thereof

A bottom machine is provided for a glass processing device to manufacture glass containers from glass tubes. The bottom machine includes one or a plurality of holding units for holding the glass container or glass tube, with the holding units being mounted so as to rotate around an axis of rotation of the bottom machine in order to convey the glass container or glass tube to various processing positions, a pressure source for supplying a gas flow, a duct system communicating with the pressure source for directing the gas flow to the holding units and for feeding the gas flow into the glass tube or into the glass container, with the duct system being designed to be free of gaps.

Glass processing device and bottom machine therefor for manufacturing glass containers

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

Growing community of inventors

Budenheim, Germany

Doris Moseler