Vacuum degassing method for molten glass flow
US6536238B2 · kind B2 · utility
42Cited by
2References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2001 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | Sep 20, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B5/2252
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
When molten glass which is under an atmosphere of pressure P, is fed into a vacuum chamber capable of rendering a pressure to the molten glass to be in a range of 38 [mmHg]-(P-50) [mmHg] to perform degassing to the molten glass, a staying time of the molten glass in the vacuum chamber is in a range of 0.12-4.8 hours, whereby there is obtainable an effective degassing function to the molten glass.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.