Schott Ag

Jörn Gerban

Frank-Thomas Lentes

Andreas Ortner

Fabian Wagner

Albrecht Seidl

Simon Schmitt

Matthias Bockmeyer

Eveline Rudigier-Voigt

Claudia Stolz

A method for separating a portion from a sheet glass element having a thickness of at least 2 millimeters along an intended separation line that divides the sheet glass element into the portion and a remaining main part is provided. The method includes producing filamentary damages comprising sub-micrometer hollow channels in a volume of the glass sheet element adjacently aligned along the separation line; and heating and/or cooling the glass sheet element to cause expansion and/or contraction so that the portion detaches from the main part along the separation line. The portion and the remaining main part each remain intact as a whole. The step of producing the filamentary damages includes generating a plasma within the volume with laser pulses of an ultrashort pulse laser; and displacing points of incidence of the laser pulses over a surface of the glass sheet element along the separation line.

Method and device for laser-assisted separation of a portion from a sheet glass element

A method and an apparatus for embossing a pattern into a varnish on a sheet-like substrate are provided. The method applies a planar stamp using a roller, while the apparatus includes a roller having a planar stamp.

Method and apparatus for embossing a pattern on a substrate coated with a varnish

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Budenheim, Germany

Jörn Gerban