Cleaning and liquid contact with solids – Processes – Longitudinally traveling work of bar – strip – strand – sheet...
Patent
1990-01-31
1991-09-24
Morris, Theodore
Cleaning and liquid contact with solids
Processes
Longitudinally traveling work of bar, strip, strand, sheet...
134 254, 134 30, 134 31, 134 32, 134 37, 134 38, 134 72, 134 67, 134130, 134151, 134152, 134184, 15303, 153061, 153091, 153092, B08B 102, B08B 302
Patent
active
050511360
ABSTRACT:
The present invention concerns a procuedure for washing off flux residues subsequent to soldering from a circuit board or equivalent component. The circuit board washing procedures of prior art have either been detrimental to the environment or poor in their washing result. These problems have in the present invention been solved by including at least one step in the procedure in which steam is sprayed on the circuit board or equivalent. The steam spraying step is advantageously combined with preceding water washing and rinsing steps. A circuit board or equivalent component rinsed with hot steam is recovered in a cleaner condition than before, and moreover, entirely dry.
REFERENCES:
patent: 3289238 (1966-12-01), Sorenson et al.
patent: 4313451 (1982-02-01), Vilen
patent: 4366005 (1982-12-01), Oquri et al.
patent: 4589926 (1986-05-01), Holmstrand
The Electronics Assembly Handbook, pp. 324-326, first published in Electronic Packaging & Production, Aug. 1984--Author: Carmen A. Capillo, ECR Corp.
El-Arini Zeinab
Morris Theodore
Nokia Mobile Phones Ltd.
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