Method of manufacturing fluorescent lamps

Details Method of manufacturing fluorescent lamps Method of manufacturing fluorescent lamps

1980-03-05

1981-12-29

Hoffman, James R.

Coating processes

Electrical product produced

Fluorescent or phosphorescent base coating

427 73, 4273722, 427384, H01J 6146, C09K 1102, B05D 302, H01J 922

Patent

active

043082971

ABSTRACT:
A phosphor suspension is prepared by adding to an aqueous solution of a polyethylene oxide, a phosphor, a phosphate or a borate of an alkali metal and a phosphor bonding agent. After having passed through a filter, the phosphor suspension flows down on the inner surface of a glass bulb of a fluorescent lamp to form a phosphor layer thereon. The coated bulb is heated to a temperature which is not higher than its softening temperature while it is transported along two opposite guide rails by two endless conveyors by having both end portions supported by associated guide tips on the conveyors projecting above the guide rails.

REFERENCES:
patent: 4121132 (1978-10-01), Repsher
patent: 4230741 (1980-10-01), Yamazaki et al.

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