Device for forming a pyrolytic coating

Glass manufacturing – Processes – With coating

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Details

65 602, 65 605, 65 6052, 65 608, 65181, C03C 1700, C03C 2502, C03B 518

Patent

active

061125547

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.

REFERENCES:
patent: 3888649 (1975-06-01), Simhan
patent: 4123244 (1978-10-01), Leclercq et al.
patent: 4642130 (1987-02-01), Hargreaves et al.
patent: 4900110 (1990-02-01), Sleighter
patent: 5122394 (1992-06-01), Lindner

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