Not sure what type of coating this is. However, any conformal coating
process needs to also consider how to remove the coating in event of repairs
or rework to replace parts or to incorporate future design changes. Some
chemical coating strippers such as Humiseal 1063 which some folks use to
remove Type UR coating (e.g. Humiseal 1A33) are highly conductive and all
residue needs to be removed using an in-line cleaner using both a polar and
a non-polar solvent to ensure all traces of the stripper are removed.
----- Original Message -----
From: "Lou Hart" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, September 28, 2001 5:17 PM
Subject: Re: [TN] Setting up conformal coating process
> Peter, FYI, we are doing a lot with Humiseal 1B31. Air analysis last
month
> revealed volatile organic compounds were less than 25% of OSHA PEL, and we
> do not have any heroic ventilation measures. We are in the process of
> developing a statistical process adjustment technique to keep the
viscosity
> close to the target. Operators report the coating is noticeably easier to
> work with when its viscosity is close to the target, and just in the data
> collection phase there have been improvements. All our stuff is done by
> hand now. We are trying to get an automated dispenser from PVA. Lou Hart
>
> -----Original Message-----
> From: peter lee [SMTP:[log in to unmask]]
> Sent: Friday, September 28, 2001 11:57 AM
> To: [log in to unmask]
> Subject: [TN] Setting up conformal coating process
>
> Hello,
>
> I like to hear your thoughts or experiences on setting
> up a safe and efficient (in particular exhaust,
> floorinconformal coating process g, ESD concerns,
> layout, material storage). Please comment on anything
> you feel critical to process control and success.
>
>
> Peter
>
>
> __________________________________________________
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