Schott Ag

Ernst-Walter Schaefer

Frank-Thomas Lentes

Uwe Kolberg

Rainer Erwin Eichholz

Volker Ohmstede

Holger Hunnius

Thomas Kirsch

Johann Faderl

Sybill Nuettgens

Thorsten Wilke

Thomas Stelle

Guido Raeke

Hildegard Roemer

Andreas Gross

Joerg Schollmayer

Frank-Jurgen Druschke

Rupert Fehr

Otmar Schmittel

Christopher Fritsch

A method and a device for the continuous production of glass and glass ceramic products from a glass melt is provided, which simplifies the changing between two kinds of glass. The device includes a melting crucible and an induction coil, which preferably extends around the melting crucible in order to heat a glass melt by means of an induction field generated by the induction coil. The wall elements, which form the side wall of the crucible, have cooling channels, through which a cooling fluid can be conducted, so that the glass melt solidifies on the side wall and forms a skull layer. The interior side of the wall elements is formed at least in part by an aluminum nitride-containing ceramic.

Method and device for producing glass products from a glass melt

A heating apparatus for the conductive heating of melts, in particular for the rapid melting-down, refining and/or conditioning of melts, is provided. The heating apparatus includes at least one electrode, as well as a first cooling system with a cooling power, which can be set and/or controlled variably.

Heating apparatus with electrode for the conductive heating of melts

The method measures the thickness of a hot glass body without direct contact with the glass body and is based on chromatic aberration. This method includes focusing a light beam from a light source on the hot glass body using a focusing device immediately after formation; conducting reflected light from the glass body into a spectrometer to obtain a reflected light spectrum; finding two wavelengths of the reflected light from the front side and the rear side of the glass body respectively at which reflected light intensities are maximum; determining the thickness of the glass body from the difference between the two wavelengths; maintaining the focusing device at a temperature below 120&#xb0; C. during the measuring of the thickness and substantially preventing heat radiation from reaching the focusing device using at least one heat-blocking filter.

Method and apparatus for contactless optical measurement of the thickness of a hot glass body by optical dispersion

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Welgesheim, Germany

Ernst-Walter Schaefer