Method of fabricating low-warp flat glass
US7207193B2 · kind B2 · utility
25Cited by
9References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2003 |
| Grant date | Apr 24, 2007 |
| Priority date | — |
| Expiry date | May 14, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P40/57
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of fabricating a glass sheet comprises modifying the thermal stress in the glass such that it is a tensile stress or substantially zero stress in a particular temperature zone of the glass, with that zone selected such that the glass sheet is formed substantially free of warping. In an example embodiment, the modifying of the thermal stress is effected by non-uniform cooling of the glass across the glass transition temperature range. This non-uniform cooling may be applied in cooling segments that are linear and at least two of the segments have differing slope.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.