Device for forming a pyrolytic coating
US6112554A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 1997 |
| Grant date | Sep 5, 2000 |
| Priority date | — |
| Expiry date | Jun 25, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C16/453
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A device for the formation, by pyrolysis, of a coating composed of metal or a metal compound on a face of a hot glass substrate which is in motion by bringing the face into contact with a gaseous reagent, includes a vault; support device for conveying the hot glass substrate along a path through a coating chamber defined between the vault and the face; device for supplying and distributing gaseous reagent to the coating chamber as a flow; and device for discharging exhaust gas from the coating chamber. The device for supplying and distributing gaseous reagent includes an ejection nozzle having defined therein a slot which opens directly into the coating chamber and has longitudinal internal walls which are substantially parallel to each other. The ejection nozzle has longitudinal internal walls which define a continuous convergent path which terminates at and communicates with the slot and which has an angle of convergence (.alpha.), thereby causing the flow of gaseous reagent to conform to the slot. The angle of convergence (.alpha.) of the convergent path ranges from 4.degree. to 14.degree. at any point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.