Method of mitigating electrostatic charge during cleaning of ele

Details Method of mitigating electrostatic charge during cleaning of ele Method of mitigating electrostatic charge during cleaning of ele

1998-07-13

1999-07-27

Alexander, Lyle A.

Cleaning and liquid contact with solids

Processes

For metallic, siliceous, or calcareous basework, including...

134 6, 134 7, 134 26, 134 30, 134 10, 134 31, 134 36, 134 37, 134 40, 134 72, 134902, 451 38, 451 39, 451 75, 451 78, 451 90, 451102, B08B 500

Patent

active

059284340

ABSTRACT:
A method is provided for cleaning an electronic circuit board having first and second opposing surfaces. The method includes directing a stream of carbon dioxide particles against the first surface. Steam is sprayed toward the first and second surfaces such that condensation of the steam caused by cooling from the CO.sub.2 particles forms a thin film of water on the first surface for conducting electrostatic charge away from the first surface. The CO.sub.2 particles substantially remove residue present on the first surface, thereby cleaning the circuit board.

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