GLASS FOR LASER PROCESSING

The present invention provides a low-alkali or alkali-free glass for laser processing, the glass reducing occurrence of laser irradiation-induced cracks and allowing formation of circular through holes. The present invention relates to the glass for laser processing, the glass having a glass composi...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	TSUNETOMO, Keiji, INOUE, Teruhide, MAMADA, Haruhiko
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY GLASS JOINING GLASS TO GLASS OR OTHER MATERIALS MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES METALLURGY MINERAL OR SLAG WOOL SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS
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Beschreibung
Zusammenfassung:	The present invention provides a low-alkali or alkali-free glass for laser processing, the glass reducing occurrence of laser irradiation-induced cracks and allowing formation of circular through holes. The present invention relates to the glass for laser processing, the glass having a glass composition including, in mol %: 45.0%≤SiO2≤70.0%; 2.0%≤B2O3≤20.0%; 3.0%≤Al2O3≤20.0%; 0%≤ZnO≤9.0%; and (I) 0.1%≤CuO≤2.0% and 0%≤TiO2≤15.0%; or (II) 0.1%≤TiO2