Schott Glas

Thomas Lüttgens

Bernd Hoetzel

Dirk Hauer

Georg Geissler

The cutting of the flat glass plate () into rectangular plates with a predetermined edge length is performed by forming initial cracks at the beginning of cutting lines on the glass plate and moving a laser beam along the cutting lines followed by a cooling spot to induce a thermo-mechanical stress alone the cutting lines. First the glass plate () is cut apart into partial plates () along first parallel cutting lines spaced according to the predetermined edge length. Then the cut apart glass plate is rotated by 90&#xb0; and the partial plates () are moved apart from each other. Subsequently the partial plates that have been moved apart are cut apart alone several parallel second cuts () perpendicular to the first cuts. This method facilitates exact placement of the initial cracks.

Growing community of inventors

Mainz, Germany

Thomas Lüttgens