Electronics Forum | Fri Mar 04 10:45:43 EST 2011 | dennisfo
I'll try to get some pictures using the Ersa scope this afternoon. Not sure how to post them,may try to send directly to you.I'll take some immediately after coating then of the same after a flash off period.
Electronics Forum | Sat Sep 22 10:07:28 EDT 2018 | davef
This chart is from http://www.nordson.com/-/media/Files/Nordson/asymtek/Papers/Process%20Control%20and%20Traceability%20in%20Automated%20Conformal%20Coating.pdf?la=en
Electronics Forum | Thu Sep 20 03:31:42 EDT 2018 | minhhaioh34
Hi all, I need some pro help me with issue bubbles after coating. some information for some pro: Machine: Asymtek Chemical: Achime AVR80 Oven: IA 4 zoon4 ( setting 100 100 90 80 conveyor speed: 0.6 m/min). I had happened before and after the oven. W
Electronics Forum | Sun Jul 26 07:52:35 EDT 2020 | sync40
Hello to everyone, Have you ever experienced soldermask bubbles inmediately after printed the soldermask itself? (for screen printing method of LPISM). I am not talking here about blistering or any outgassing defects after exposing to high temperatu
Electronics Forum | Fri Sep 21 17:33:01 EDT 2018 | michaelszuch
Hello Hai, The first step is to determine where in the process the bubbles are being generated - either during coating or during curing. You can easily check this by letting a few boards air dry (no oven) and comparing them to the oven-cured ones. I
Electronics Forum | Tue Jan 24 10:24:18 EST 2006 | kmorris
We've got a problem here, where we're hand spraying a urethane conformal coat on over a rectangular inductor. The inductor body is a plastic tube, with potting to fill. The top is not always flat (sometimes concave). The problem is that bubbles appea
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 | Fri Feb 18 08:08:55 EST 2011 | floydf
I have found that depressurizing the tanks when the machine is not in use reduces bubbles.
Electronics Forum | Tue Mar 01 15:33:35 EST 2011 | jlawson
If I assume you running a selective coating machine ? Maybe you have small leak and system is sucking in air creating bubbles in mixture, like a sort of venturi action, just idea, can be a faulty fitting , elbow etc. Have had this before....
Electronics Forum | Tue Feb 08 14:23:47 EST 2011 | dennisfo
Conformal coat bubbles using 1B73 and SC-205 nozzle I've read most of the posts on this subject. I'm using the SC-205 (airless) fan nozzle and 400 needle to apply 1B73 mixed with xylene thinner. I have micro bubbles which come directly out of the noz
