Method for automatic electrostatic spray coating

Details Method for automatic electrostatic spray coating Method for automatic electrostatic spray coating

1988-08-15

1992-03-31

Lawrence, Evan

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

427 27, 239 3, B05D 104

Patent

active

051006901

ABSTRACT:
A method and system are provided for dispensing only that amount of coating material which is required for coating a series of one or more articles to be coated by the coating material. The method and system include the step of, and apparatus for, feeding that amount of coating material to an intermediate container. The intermediate container receives the coating material from a color changer. The connection between color changer and intermediate container is so designed that no electrical current flow exists between these two components, even when using electrically conducting coating material. The coating material is electrostatically charged at an atomizer downstream from the intermediate container during a spray operation. When a coating material change is required, the amount of coating material dispensed into the intermediate container has essentially been exhausted, making it possible to clean the system components affected by the coating material change with very little waste and within a short time, so that the new coating material will not be contaminated by residue of the previously used coating material.

REFERENCES:
patent: 4017029 (1977-04-01), Walberg
patent: 4313475 (1982-02-01), Wiggins

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