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Date: | Mon, 2 Jun 2008 20:07:48 +0300 |
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Vesication??
Brian
Ken Bloomquist wrote:
> Happy Monday All,
>
> This has nothing to do with the ISS or Lawrence Welk :-)
>
> On occasion we get tiny bubbles in our moisture cure, polyurethane conformal
> coating. We know that if the humidity is high (seldom happens here in
> Western Washington) and you get the coating on a little thick the bubbles
> will form. I'm sure the coating skins over really fast in high humidity and
> then all those little volatiles can't get out creating tiny bubbles.
>
> My question is, are there any methods for removing these little bubbles once
> the coating is cured? Generally they are not bad enough to need rework but
> on occasion there are just too many to ignore.
>
> Thanks as usual for any help,
>
> KennyB
>
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Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
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