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Date: | Wed, 29 Aug 2012 11:52:35 -0500 |
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You should also make sure you have an oil and water trap and in-line drier
feeding your system.
Doug Pauls
From: Paul Edwards <[log in to unmask]>
To: <[log in to unmask]>
Date: 08/29/2012 11:49 AM
Subject: Re: [TN] Cloudy Conformal Coating
Sent by: TechNet <[log in to unmask]>
Check to see if you have excessive moisture in the CDA line going to the
spray head...
Paul
Paul Edwards
Process/Quality Engineering
Surface Art Engineering
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Blair Hogg
Sent: Wednesday, August 29, 2012 7:04 AM
To: [log in to unmask]
Subject: [TN] Cloudy Conformal Coating
I'm hoping that Technetters can share some light on an issue that we
occasionally experience here - we coat some of our boards with 1B73
conformal coating, for some we have a spary machine, others a sprayed by
hand.
Every so often we will process some board through coating and they will
have a cloudy / milky appearance in the coating. We have been told
previously that this happens when humidity is up, since our manual spray
coating area is not in an air-conditioned environment.
Anyone else ever have this problem? How did you fix it?
Thanks,
Blair
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