Patent ID: 8895892
Filing Date: 2014-11-25
Classification: C03B,Y02P

Abstract:
1. A method for removing an outer edge from a moving glass sheet, said method comprising the steps of: directing a first laser beam at the moving glass sheet to create a first starter defect in the moving glass sheet at a location spaced from an edge of the glass sheet, wherein the glass sheet has a thickness ≦300 microns, and wherein the first starter defect produces a residual stress field in the glass sheet; once the first starter defect has been created, turning off the first laser beam, then moving the glass sheet with the first starter defect, and then directing a second laser beam at the first starter defect in the moving glass sheet while the first laser beam is turned off; directing a first stream of liquid at the first starter defect in the moving glass sheet, where the second laser beam and the first stream of liquid create a first vent in the moving glass sheet; maintaining the directing of the second laser beam and the first stream of liquid at the moving glass sheet even after the first starter defect has passed to propagate the first vent in the moving glass sheet where the propagated first vent enables removal of the outer edge from the moving glass sheet.