Patent ID: 9187365
Filing Date: 2015-11-17
Classification: C03C,G01B,Y10T

Abstract:
1. A method for measuring the asymmetry of a glass-sheet manufacturing process comprising: (I) producing a glass sheet using the glass-sheet manufacturing process; (II) measuring the mass M (III) subjecting the glass sheet or the test sample to an ion-exchange process; (IV) measuring the change in mass ΔM of the glass sheet or the test sample as a result of step (III); (V) measuring a warp value W for the glass sheet or the test sample after step (III); and (VI) computing an ASYM value for the glass sheet or the test sample using an equation of the form:  where W wherein the ASYM value calculated in step (VI) is a measure of the asymmetry of the glass-sheet manufacturing process.