Electronics Forum | Wed Feb 16 12:22:54 EST 2011 | duso02
Have you always used xylene? For our 1B73 we use nothing but 73 thinner from Humiseal or PGMEA at about 50/50 depending on the humidity.
Electronics Forum | Tue Mar 01 15:07:00 EST 2011 | dennisfo
Update on 1B73 bubbles, Changed over to a mixture of Humiseal 73 thinner with coating (25 sec on Zahn 2) observed a reduction in bubble formation (approx. 20%) but still present.
Electronics Forum | Wed Feb 16 12:17:02 EST 2011 | duso02
I haven't had to remove that specific coating before but we regularly remove dow 2577 and other SR with Humiseal 1090 stripper.
Electronics Forum | Wed Nov 09 09:27:44 EST 2011 | edmaya33
If you are using a Humiseal. try UV-40 gel which is about 20Kcps. it will dam your material from capillary flow. It should be applied prior to coating of your low viscous material.
Electronics Forum | Thu May 17 23:32:10 EDT 2012 | umar
Hi Dave, Thanks on yoru prompt reply, Can help to share whethere you had knowledge about this issues ?since I had a hot topic on this issues ? is my cleaning is not clean or is the saponifier chemical uyse is not compatable to the humiseal coating
Electronics Forum | Mon Jan 28 11:50:23 EST 2013 | johng
Good morning Mark, No issues around the masking at this point. The issue seem to be in open areas as well as between clad runs. We are using Humiseal 1A33 Conformal Coat.
Electronics Forum | Thu May 02 14:07:53 EDT 2013 | duso02
I would suggest lowering the viscosity even more. Humiseal even sells 1B31 pre-mixed specifically for spray machines and the highest they go is 65cps.
Electronics Forum | Mon Oct 14 15:13:52 EDT 2013 | esoderberg
Does anyone have a novel idea on how to protect the flex area during conformal spray coating? Currently using Humiseal T30 on the flex but it has to be removed very carefully to insure coating stays intact on the board.
Electronics Forum | Tue Nov 26 18:41:14 EST 2013 | triciawmcgough
Dear Mike, I've forwarded your question to the experts at Nordson ASYMTEK. I believe most of the team are on leave for the holidays, but hopefully we'll have an answer for you next week. Thanks!
Electronics Forum | Thu Dec 05 02:22:29 EST 2013 | mg2013
Hi Tricia, thanks a lot for your help, i will contact Nordson Asymtek immediately! Greetings Michael
