Method of spray-reflectorizing electric lamp envelopes

Details Method of spray-reflectorizing electric lamp envelopes Method of spray-reflectorizing electric lamp envelopes

1980-04-04

1981-09-01

Hoffman, James R.

Coating processes

Electrical product produced

Hollow article

427110, H01K 132, B05D 112, G02B 510, G02B 110

Patent

active

042872316

ABSTRACT:
A selected part of the envelope of a fabricated electric lamp is made light-reflecting by spraying it with a coating composition that contains aluminum flakes of such minute size that they inherently arrange themselves in planar relationship and form a specular film which provides a mirror-like reflector surface as the composition dries. A protective coating of a suitable heat-resistant material, such as silicone plastic, is then sprayed over the reflective film and cured. The protective coating can also contain aluminum particles in order to fill voids that may be left in the thin specular film and to make the latter more opaque.

REFERENCES:
patent: 2736665 (1956-02-01), Rogers
patent: 3225241 (1965-12-01), Spencer et al.
patent: 3281620 (1966-10-01), Miller
patent: 3411930 (1968-11-01), Reising
patent: 3713870 (1973-01-01), Kaye
patent: 3932780 (1976-01-01), De Caro et al.
patent: 3983513 (1976-09-01), De Caro

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