Yep, the silicone will cause the AR to de-wet. Sometimes that is desirable:
makes for easy demask if the coating won't stick to the dot.

Lloyd Duso
Diamond-MT
Plant Manager
(814) 535-3505
www.Diamond-mt.com

On Thu, Apr 2, 2015 at 1:33 PM, Craig Sullivan <[log in to unmask]> wrote:

> I should also add:
> Since you are using type AR, whichever tape you go with you make sure the
> supplier slits it without silicone.
> Most companies will slit the tape logs with a silicone solution on their
> blades. Big issues with acrylics.
>
>
> Craig Sullivan
> Manufacturing Engineer / IT Administrator
> Phone:  +1.607.266.0480 x115
> Fax:  +1.607.266.0482
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>  Please consider the environment before printing this e-mail.
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> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Craig Sullivan
> Sent: Thursday, April 02, 2015 11:34 AM
> To: [log in to unmask]
> Subject: Re: [TN] Masking tape recommendations for Acrylic conformal
> coating...
>
> St. Gobain part number M797 is the same stuff Humiseal used to sell many
> moons ago.
> We also use 3M 2090 painters tape which performs surprisingly well, even
> with ESD
>
> Craig Sullivan
> Manufacturing Engineer / IT Administrator
> Phone:  +1.607.266.0480 x115
> Fax:  +1.607.266.0482
> Email: [log in to unmask]
> Web:  www.mplinc.com
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> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Gregory
> Sent: Thursday, April 02, 2015 11:08 AM
> To: [log in to unmask]
> Subject: [TN] Masking tape recommendations for Acrylic conformal coating...
>
> Morning All,
>
> I know this has been posted before, and for some reason I can't search the
> archives.
>
> We're starting to do acrylic coating on some assemblies here, and I was
> looking for some recommendations for masking tape that doesn't leave
> residues.
>
> Can anybody give some recommendations?
>
> Steve
>
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