4 humiseal 1b31 canspray bubbles results

Electronics Forum: humiseal 1b31 canspray bubbles (Page 1 of 1)

Bubbles in Conformal Coating

Electronics Forum | Fri Jan 16 06:53:33 EST 2009 | stevewilde

I am using Humiseal 1B31 conformal coating and xylene mix on a PVA coating machine. Bubbles are appearing between the pins of LCCs mainly and bubbling is worse when put through the IR oven. Does anyone have any suggestions or tips to elliminate this

Bubbles in Conformal Coating

Electronics Forum | Thu Jan 22 09:04:22 EST 2009 | mefloump

Humiseal recommends a 1 to 1 mix ratio of 1B31 and Thinner 521. I have for that I need to thin my ratio more to get humiseal to spray correctly in our PVA650. Also I am using Humiseal 1B73 but the tech data sheets say the same for spraying. Try thinn

Bubbles on solder joint(after conformal coating curing)

Electronics Forum | Mon Dec 28 09:12:56 EST 2009 | kpm135

@tommyg_fla According to the TDS the recommended coating thickness for Humiseal 1B31 is only 1-3 mils so if I had to guess I would say your issue might be that you're re-coating over the first pass too soon. All the solvent hasn't evaporated and the

Re: Conformal Coating

Electronics Forum | Fri Mar 20 10:31:19 EST 1998 | Mick Jones

| I will be starting a conformal coating process soon, I am looking for any pointers on | 1) Best method for masking components, tape mask, liqued mask | 2) Which is best Spray or Dip? | 3) Compatiblity with no clean solder paste (flux residue) | I h


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