Electronics Forum | Mon Jun 25 10:59:49 EDT 2007 | simsj
We're using the 1B73LOC conformal coating from Humiseal. We've seen some bubbling of the coating. Their tech handbook suggested reducing our oven ramp speed. Does anyone have a good profile for this? They've always pointed me to Nordson, and Nord
Electronics Forum | Thu Dec 04 12:24:35 EST 2008 | jdumont
We have the same Asymtek machine, same Humiseal product, same bubbling issue on touch ups. Ive found that very light pressure and a thinner mixture usually yields good results for us. Generally I dip the brush in the mixture and let it drip near wher
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 | Tue Jun 09 12:35:18 EDT 2009 | jdumont
We have used an Asymtek C-740 for about three years now and its never had an issue even once. We spray Humiseal acrylic so I cant help you too much with the silicone but the machine itself is great. Opt in for the little process control extras lik
Electronics Forum | Sun Nov 29 20:04:05 EST 2009 | prodivegsr
Hi sforman1, The chemical that i'm using is a solvent based coating humiseal 1B73. From my understanding,the UV curing is mainly for UV curable coating like the UV40. And the main advantage of using UV curing is for fast throughput and environment
Electronics Forum | Wed Dec 02 00:31:37 EST 2009 | jlawson
UV40 for you info was developed in Humiseal EU and has been tested heavily against Dymax product. UV40 is a great product has many approvals from major auto and whitegoods makers.... I have seen comparisons UV40 to Dymax 984LV and Dymax comes out se
Electronics Forum | Thu Dec 10 15:33:55 EST 2009 | duso02
We use one quite often. Our machine is a Uvitron Conveyor 40 as we are a large coating house and this allows us to process many boards. Dymax also maufactures and sells machines as well. Humiseal and Dymax both manufacture UV coatings. Emerson Cuming
Electronics Forum | Mon Aug 29 22:48:09 EDT 2011 | davef
Rich Here's what Humiseal says: Thermal Properties The coating must be able to withstand localized thermal 'hot spots' generated by components. High temperatures can cause short-term changes in coating characteristics, such as softening and lowered e
Electronics Forum | Fri Sep 02 16:30:02 EDT 2011 | duso02
Rich That is a standard reaction with Humiseal 1A33, nothing to worry about. Find a board that was coated over year ago and had been heated up at all and it will be an amber color. It does not violate the IPC for discoloration. We have coated boards
Electronics Forum | Thu May 31 14:59:50 EDT 2012 | jdumont
I use Trace and certainly recommend them. I actually just had this test done last week. Adhesion test per ASTM-3359 Method B. We use Humiseal 1B73, which is similar to what you use. Is your soldermask "active" enough for this coating? I believe
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