Electronics Forum | Wed Apr 07 13:02:05 EDT 2004 | Marco Serrano
Had anyone experienced air bubbles inside of the Loctite glue syringes? If any of you do What have you done to rid off this problem? Thanks in advance!
Electronics Forum | Wed Apr 07 14:12:53 EDT 2004 | Paul
The easiest way to remove air bubbles from any fluid is to place it into a vacuum chamber. I do this almost daily with liquid rubber coatings, glues, and plastics.
Electronics Forum | Tue Feb 03 11:42:54 EST 2009 | lmartenson
We use PVA and I have had bubbles that came from the pressure in the pressure pot being to high. Also the material filter was slightly clogged. I'm not sure of your setup hope this helps.
Electronics Forum | Thu Nov 19 22:48:22 EST 2009 | davef
Since the bubbles: * Are only on the solder connection, we'd guess there must be some compatibility issue between the flux residues and the conformal coat materials. * Occur after curing, we'd guess the cure recipe is too rapid and is entrapping voli
Electronics Forum | Fri Dec 17 03:37:42 EST 2010 | tselvan
I am facing bubbles issue in RTV process on IC location,ie in between lead,whats the root cause& how to avoid? Is it will affect the reliabilty?
Electronics Forum | Tue Sep 20 05:21:41 EDT 2016 | abhilash4788
Hi, Currently we are facing bubble formation in conformal coatings in the pcba. Have varied various specs of the conformal coating machine, even during manual application also having the same issue. the material used is silicone conformal coating. N
Electronics Forum | Tue Dec 02 14:31:48 EST 2008 | dontfeedphils
Hey guys, just joined the site and I'm looking for some help. In our coating department we are running a Asymtek C-740 with a Jet and film coater. The coating that we are using is Humiseal 1B73 acrylic. The problem that we are having is that the C
Electronics Forum | Mon Jul 14 12:55:07 EDT 2008 | arminski
I have a board with the above problem from our PCB supplier. After they applied the solder mask and run the PCB's to HASL process, the solder mask bubbled on one side of the PCB making the solder mask thickness higher and PCB looking awkward. They s
Electronics Forum | Fri Oct 09 16:07:30 EDT 2009 | dlabelle
We use Dow 2620 silicone conformal coat applied with PVA1000 sprayer machine. If used on a daily bases, we have no problem. If we let the machine sit idle for over a week, we will get bubbles in the conformal coating. Sometimes, purging the line w
Electronics Forum | Fri Sep 19 18:15:04 EDT 2003 | joeherz
Russ, I had arrived at basically the same specs here. Thanks for the effort. Regards.
