Is there a reason you are not spraying or selectively coating (e.g.,
Nordsen coater) your boards?  Your labor will decrease, as will your
defects.

I would also suggest evaluating different solvents and/or a new coating
if you must dip and are having too many bubbles.  Humiseal 1B73-LOC
worked reasonably well for me.

Duane Thexton
Aerojet
626-812-1894

> ----------
> From:         Cory and Lise Steeby[SMTP:[log in to unmask]]
> Reply To:     TechNet E-Mail Forum.;Cory and Lise Steeby
> Sent:         Tuesday, June 09, 1998 3:24 AM
> To:   [log in to unmask]
> Subject:      [TN] dip conformal coating
>
> We are using a manual DIP conformal coating method with an acrylic
> coating
> and building assemblies to the IPC-610 specification.
>
> 1.  Are there other specifications which apply to conformal coating?
> 610
> is brief on the subject.
>
> 2.  Our biggest defect is bubbles in the coating.  We are finding that
> dip
> angle, insertion rate and extraction rates all effect the amount of
> bubbles
> on the finished assembly.  Does anyone have similar experience or
> advice?
>
> 3.  Does anyone know of available dipping equipment and / or drying
> equipment?  Our goal is to be able to dip 250 assemblies per day (1000
> assemblies per day panelized 4 up).
>
> Thank You
>
> Cory Steeby
>
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