How does the extraction and filtration system work in the CB100 conformal coating spray booth?

The Two layer mesh filtration means that the filters used are formed from two layers. A rougher, thicker, less dense filter is used on top and the coating is prayed on to this one(which is also less costly to replace) and a finer, thinner, more dense filter is used on the bottom to give you a laminate air flow.

The extraction should be fitted by a local air conditioning company to the customer. Due to the difficulties in supply of the correct extraction, which is dependent on location of booth to the exhaust chimney, local hse regulations, it isn’t practical for us in the UK to fit it.

The CFM is calculated from the fact that you need 0.7 m/s air flow through the spray booth to provide adequate extraction (this is a law in the UK). In order to work out the CFM we must multiply the face velocity by the area of the front aperture and then do the relevant conversion to get the figure into cubic feet per minute.

Click Conformal Coating Spray Equipment FAQs to find out more about this and other issues relating to the process.


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About Dr Lee Hitchens

Dr Hitchens has been working in the electronics industry and the area of conformal coatings for over 25 years in various areas including sales and technical support. He has also been training people for almost the same amount of time in all areas of conformal coating whether that is materials & equipment selection, process development or troubleshooting to help them solve their particular problem. Recently, he decided that the industry needed a specific place where all of the useful knowledge on conformal coatings could be collated for users to find easily and use in their own production process. So, Nexus was born and he began the Nexus eBook project.

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