Treatment of glass to reduce venting during thermal treatment and a glass article made thereby
US4824712A · kind A · utility
23Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 8, 1985 |
| Grant date | Apr 25, 1989 |
| Priority date | — |
| Expiry date | Oct 8, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/315
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method and composition for coating scored regions or holes in glass articles prior to heat treatment in order to maintain residual compressive stresses and reduce venting are disclosed. The method and composition of the present invention utilize silica-containing sols which gel and density and ultimately form glassy films during the heat treatment of the coated glass articles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.