Coating hot glass with metals or metal compounds, especially oxides
US4655810A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 1986 |
| Grant date | Apr 7, 1987 |
| Priority date | — |
| Expiry date | Feb 25, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B14/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A metal or metal compound coating is formed on a face of a hot ribbon 3 of freshly formed glass as it travels forwardly 4 through a coating station 19 where coating precursor material is sprayed onto the surface of the glass. The coating precursor material is sprayed in one or more streams 1 of droplets which is or are directed downwardly and forwardly towards the ribbon 4 and is repeatedly displaced to and fro across the ribbon path so that the ribbon 3 is scanned by the droplet stream(s) 1. Especially in order to form a thick coating of tin oxide on a rapidly moving ribbon, the velocities of the droplets in the stream(s) 1 are such that substantial splashing occurs at the ribbon face. Gas is continuously discharged along axes 6,7,8 behind the droplet stream 1 so as to maintain a forwardly directed flow of gas which envelops the rear half 15 of the or each stream 1 at least at the bottom portion of the stream trajectory and sweeps past the sides of such stream with sufficient velocity to entrain substantially all the splashes away from the stream. The entrained material is then removed from the environment of the ribbon through exhaust ducting 27.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.