Wave-coating method and associated apparatus

1 . A wave-coating apparatus for wetting a surface of a lamp part, which is in the form of a plate, with a suspension,

which wave-coating apparatus has:

a feed apparatus for supplying the suspension,

an outlet-flow apparatus for carrying away an outflowing part of the suspension,

a holding apparatus for holding the feed and the outlet-flow apparatus and the lamp part to be wetted, with the lamp part and the holding apparatus being connected to one another during the wetting process such that a cavity is formed between them,

and with the wave-coating apparatus being designed such that the suspension can enter the cavity via the feed apparatus in order to wet it, and can emerge from the cavity via the outlet-flow apparatus,

and with the cavity being designed such that only the area extent of that component of the surface of the lamp part which is to be wetted is wetted by the suspension.

2 . The wave-coating apparatus as claimed in claim 1 , which has a seal between the holding apparatus and the lamp part, in order to seal the cavity from the outside.

3 . The wave-coating apparatus as claimed in claim 1 , which has a detachable clamping apparatus, which clamps the lamp part and the holding apparatus together during the wetting process.

4 . The wave-coating apparatus as claimed in claim 1 , in which the feed apparatus and the outlet-flow apparatus have a common line.

5 . The wave-coating apparatus as claimed in claim 1 , in which the holding apparatus is designed to hold two lamp parts during the wave-coating process such that the cavity is bounded by the two lamp parts and the holding apparatus.

6 . The wave-coating apparatus as claimed in claim 1 , in which the lamp part to be wetted is a glass plate.

7 . The wave-coating apparatus as claimed in claim 1 , in which the lamp part to be wetted is a part of the discharge vessel of a flat radiator designed for dielectric-barrier discharge lamps.

8 . The wave-coating apparatus as claimed in claim 1 , in which the lamp part to be wetted has raised areas and recessed areas.

9 . The wave-coating apparatus as claimed in claim 1 , which is designed to wet one surface of a lamp part, which is in the form of a plate, with a cleaning agent.

10 . The wave-coating apparatus as claimed in claim 1 , which is designed to wet one surface of a lamp part, which is in the form of a plate, with an adhesion promoter.

11 . A wave-coating method for wetting a surface of a lamp part, which is in the form of a plate, with a suspension by means of a wave-coating apparatus as claimed in at least one of the preceding claims, having the following steps: the suspension is supplied by means of a feed apparatus, an outflowing part of the suspension is carried away by means of an outlet-flow apparatus, and the feed and the outlet-flow apparatus and the lamp part to be wetted are held by a holding apparatus, with the lamp part and the holding apparatus being connected to one another during the wave-coating process such that a cavity is formed between them, and with the wave-coating process being carried out such that the suspension can enter the cavity via the feed apparatus in order to wet it, and can emerge from the cavity via the outlet-flow apparatus, and with the cavity being designed such that only the area extent of that component of the surface of the lamp part which is to be wetted is wetted by the suspension.

12 . The method as claimed in claim 11 , in which the lamp part to be wetted is a glass plate.

13 . The method as claimed in claim 11 , in which the lamp part to be wetted is a part of a flat radiator designed for dielectric discharges.

14 . The method as claimed in claim 11 , in which the lamp part to be wetted has raised areas and recessed areas.

15 . The method as claimed in claim 11 , in which the surface to be wetted of the lamp part which is in the form of a plate is supplied with a cleaning agent.

16 . The method as claimed in claim 11 , in which the surface to be wetted of the lamp part which is in the form of a plate is supplied with an adhesion promoter.

17 . The method as claimed in claim 15 , in which the surface to be wetted of the lamp part which is in the form of a plate is supplied with an adhesion promoter.