Electronics Forum | Thu Jan 22 11:12:06 EST 2009 | davef
Conformal coating masking: Electronic equipment manufacturer's use conformal coating processes to protect printed circuit modules from moisture, fumes, rapid temperature changes and other environmental conditions. Typically, pressure sensitive tapes
Electronics Forum | Thu Jan 22 03:25:26 EST 2009 | stevewilde
What masking tape can people recommend for masking the board when conformal coating. I am using a PVA autocoat machine and humiseal 1B31. Current tape, is leaving residue on board when used to hold link wires down whilst glue cures and also when used
Electronics Forum | Mon Jan 28 08:44:21 EST 2013 | diamondmt
John, In addtion to the cleaning process you may wnat to look at the masking materials you are using as well. Are you using any temporary masking tape? If so, do the dewetted areas coincide? Some of these tapes use a silicone-based adhesive which wi
Electronics Forum | Wed May 19 19:41:12 EDT 2010 | jry74
Our employees use a knit style ESD glove when masking boards to prevent oils. They snag alot and bend leads and cause other problems. I have tried dipped palm but they are bulky and dont offer "feel". I tried a silky type but they had a huge seam
Electronics Forum | Thu Nov 15 11:30:17 EST 2007 | mt396596
Could anyone recommend an esd safe masking tape for conformal coating that does not use a silicone based adhesive? I have looked into 3M's 7419 series and am awaiting samples, curious if there is another brand out there people have used. Thank you
Electronics Forum | Wed Feb 29 14:37:14 EST 2012 | hegemon
If I am not mistaken you can buy Spray cans of Conformal Coating. For the small batch in the environment you are describing, that might be the ticket. A bit pricey material wise, but clean up is a cinch. A little masking tape, and spray away!
Electronics Forum | Tue May 25 07:19:13 EDT 2010 | jry74
I tried these and the operators didn't like them. The palm dip didn't slide well on tape and the finger tips were a bit bulky.
Electronics Forum | Mon Jul 16 07:10:09 EDT 2012 | mccabekev
I have found that Edding do an aerospace marker, which is water based and does not run with the conformal coating. However, this washes off prior to the coating so it is not much use. Looks like we are just going to have to put some clear tape over
Electronics Forum | Sat Nov 17 09:11:07 EST 2007 | davef
Try: http://ppitapes.com/catalogs/Conformal-coating.pdf We have no relationship, nor receive benefit from the company referenced above.
Electronics Forum | Tue May 19 11:56:59 EDT 2020 | philc
Do you buy in the PCB's from a manufacturer? If so, they may well offer such a service for you. We get quite a few different boards that come with either Kapton tape, or liquid masking already applied.
