Apparatus for coating workpieces electrostatically

Details Apparatus for coating workpieces electrostatically Apparatus for coating workpieces electrostatically

1990-11-07

1992-02-04

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

Electrostatic type

239290, B05B 502

Patent

active

050853732

ABSTRACT:
Particles of conductive coating material, such as the water-enamel type paint, are sprayed from a grounded bell-atomizer (2) and are electrostatically charged in the corona-discharge area by outer electrodes (10) which are inserted into a holding-arrangement (11, 12, 15) made of an insulating material. Potential-control means in the form of suitably selected materials for the holding-arrangement (11, 12, 15) and/or an atomizer-housing (4) are provided. The radial-potential pattern between the atomizer-housing (4, 6) and the outer electrodes (10) is approximated to the radial-potential distribution of the material sprayed. The insulating material of at least a portion of the apparatus consists of a fluorocarbon such as PTFE (polytetrafluorethylene). The subject invention reduces the danger of the apparatus coating itself.

REFERENCES:
patent: 3051394 (1962-08-01), Sedlacsik
patent: 3843054 (1974-10-01), Kendall et al.
patent: 4036434 (1977-07-01), Anderson et al.

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