Schott Ag

Rieter Automatik Gmbh

Michael Clauss

Ingo Schwirtlich

Matthias Mueller

Uwe Sahr

Markus Finkbeiner

Andreas Langsdorf

Ulrich Lange

Gerhard Hahn

Jochen Scheurich

Sybill Nüttgens

Michael Schuler

Rainer Zahn

Werner Steinbacher

Matthias Müller

Dirk Nissen

In order to provide a particularly homogeneous pressure and temperature profile in a gas cushion for the levitating support of glass or glass ceramic, the invention provides a device () for transporting or supporting glass ceramic or glass, which comprises at least one diaphragm () that has at least one continuous bearing surface () and at least one gas feed chamber (-) and at least one gas discharge chamber (-), the gas feed chamber (-) and the gas discharge chamber (-) having a gas-permeable connection to the bearing surface ().

Method and device for the contactless transport or support of glass or glass ceramic

The device for production of a monocrystalline or a multicrystalline material blank, especially a silicon multicrystalline blank, using the VGF method has a crucible with a rectangular or square cross section. A flat heating device, especially a jacket heater, which generates an inhomogeneous temperature profile, is arranged around the crucible. This temperature profile corresponds to the temperature gradient formed in the center of the crucible. The heat output of the flat heating device decreases from the top to the bottom end of the crucible. The flat heating device includes parallel heating webs, which extend in a meandering course. The heat outputs from the heating webs differ according to their different conductor cross sections. To avoid local overheating in corner areas of the crucible, constrictions of the cross sections of the heating webs are provided at inversion zones of their meandering course.

Device for making monocrystalline or multicrystalline materials, in particular multicrystalline silicon

The method of producing monocrystalline or multicrystalline blanks, especially silicon blanks, by using a vertical-gradient-freeze method, includes providing a crucible with a rectangular or square-shaped cross section and a heating jacket disposed around the crucible, which has a number of flat heating elements with a meandering course disposed on side faces of the crucible. The heating jacket generates an inhomogeneous temperature profile corresponding to a temperature gradient in the center of the crucible. The flat heating elements preferably comprise parallel heating webs, whose heat output is set by varying the conductor cross section. To avoid local overheating in corner areas of the crucible, constrictions of the cross section are provided at inversion zones of the meandering courses of the webs. The flat heating elements can be formed from a plurality of interconnected individual segments.

Device and method for the production of monocrystalline or multicrystalline materials, in particular multicrystalline silicon

An apparatus for pelletizing strands of polymer emerging in molten form from dies with a pelletizer, in which apparatus a cooling section carrying a coolant flow and a dewatering section are provided between the dies and the pelletizer, a running-in rest being arranged upstream of the pelletizer, adjoining the dewatering section and provided with at least one air-nozzle arrangement, which is arranged transversely to the running direction of the strands, is designed as a step in the running-in rest and is intended for generating a stream of air directed essentially parallel to the running direction of the strands, which takes with it the strands supplied to the running-in rest.

Apparatus for pelletizing strands of polymer

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Hofheim, Germany

Michael Clauss