PROCESS AND APPARATUS FOR SCORING BRITTLE MATERIAL

The present invention relates to a process for laser scoring of flat glass sheets. The process comprises manipulating a laser beam having a substantially Gaussian intensity profile to produce an elongated heating zone on the glass sheet to be scored, the elongated heating zone having a central porti...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	MENEGUS HARRY E, BROWN JAMES W
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING CUTTING-OUT GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GLASS HAND CUTTING TOOLS MACHINE TOOLS MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY MINERAL OR SLAG WOOL PERFORATING PERFORMING OPERATIONS PUNCHING SEVERING SEVERING BY MEANS OTHER THAN CUTTING SOLDERING OR UNSOLDERING STAMPING-OUT TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TRANSPORTING WELDING WORKING BY LASER BEAM
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The present invention relates to a process for laser scoring of flat glass sheets. The process comprises manipulating a laser beam having a substantially Gaussian intensity profile to produce an elongated heating zone on the glass sheet to be scored, the elongated heating zone having a central portion with a lower temperature than a temperature of an outer portion of the heating zone. An initial crack is made in the glass sheet, the elongated heating zone is traversed across the glass sheet coincident with the initial crack, and the heated glass is thermally shocked by directing a cooled liquid against the heated glass, thus propagating the crack. The scored glass sheet may thereafter be broken by applying bending techniques as are known in the art.