Cutting glass

摘要

A method of cutting an elongated strip of glass comprises modifying the stress pattern in the strip region by treating the glass to form in the glass a line of tensile stress along the strip between a cutting line and the edge of the ribbon or sheet, and the further step after modifying the stress pattern of causing the glass to fracture along the cutting line while the modified stress pattern still exists. Preferably a line of compressive stress is formed along the cutting line.