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1. (WO2015126805) METHODS AND APPARATUS FOR CUTTING RADII IN FLEXIBLE THIN GLASS

Pub. No.:    WO/2015/126805    International Application No.:    PCT/US2015/016096
Publication Date: Fri Aug 28 01:59:59 CEST 2015 International Filing Date: Wed Feb 18 00:59:59 CET 2015
IPC: C03B 33/09
Applicants: CORNING INCORPORATED
Inventors: ALTMAN, Andrew Stephen
COLE, Carlton Wesley
FLEMING, Todd Benson
LIU, Anping
WATKINS, James Joseph
Title: METHODS AND APPARATUS FOR CUTTING RADII IN FLEXIBLE THIN GLASS
Abstract:
Methods and apparatus provide for: cutting a thin glass sheet along a curved cutting line, where the curve is divided into a plurality of line segments; applying a laser beam and continuously moving the laser beam along the cutting line; applying a cooling fluid simultaneously with the application of the laser beam in order to propagate a fracture in the glass sheet along the cutting line; and varying one or more cutting parameters as the laser beam moves from one of the plurality of line segments to a next one of the plurality of line segments, wherein the one or more cutting parameters include at least one of: (i) a power of the laser beam, (ii) a speed of the movement, (iii) a pressure of the cooling fluid, and (iv) a flow rate of the cooling fluid.