发明名称 |
Method of reducing distortion in a sheet of glass |
摘要 |
A method of reducing distortion in a glass sheet is described and comprises the steps of: forming a glass ribbon in a glass manufacturing process; separating a glass sheet from the glass ribbon, the glass sheet having a substantially flat surface; measuring a retardation through the surface of the glass sheet; defining a retardation parameter indicative of the retardation of the glass sheet; cutting the glass sheet into a plurality of sub-sheets; measuring a distortion of the sub-sheets; defining a distortion parameter indicative of the distortion of the sub-sheets; and determining a correlation between the retardation parameter and the distortion parameter such that the distortion parameter of sub-sheets of a subsequent glass sheet can be predicted based on the correlation. |
申请公布号 |
US9010148(B2) |
申请公布日期 |
2015.04.21 |
申请号 |
US201213485301 |
申请日期 |
2012.05.31 |
申请人 |
Corning Incorporated |
发明人 |
Contreras Cynthia C.;Cuellar Edward A.;Markham Shawn R. |
分类号 |
G01N33/38;G01N21/23;G01N21/896 |
主分类号 |
G01N33/38 |
代理机构 |
|
代理人 |
Able Kevin M. |
主权项 |
1. A method of reducing distortion in a glass sheet, comprising the steps of:
forming a glass ribbon in a glass manufacturing process; separating a glass sheet from the glass ribbon, the glass sheet having a substantially flat surface; measuring a retardation value through the surface of the glass sheet at a plurality of locations of the glass sheet; determining an average retardation value of all of the measured retardation values; cutting the glass sheet into a plurality of sub-sheets; measuring a distortion of the sub-sheets; defining a distortion parameter indicative of the distortion of the sub-sheets; determining a correlation between the average retardation value and the distortion parameter such that a distortion parameter of sub-sheets of a subsequent glass sheet can be predicted based on the correlation; and modifying the glass manufacturing process such that an average retardation value of the subsequent glass sheet is adjusted to thereby reduce a distortion of the sub-sheets from the subsequent glass sheet based on the correlation. |
地址 |
Corning NY US |