good kapton should be OK (make sure it is real stuff, not just look  
alike - said semiconductor cleanroom compatible type... ).  some of  
the polyester type has silicone adhesive or silicone release agent.   
not a big deal if you clean it after remove the tape and not go  
through heat (reflow)... if you go with reflow, you might have  
residue silica/silicone left on the surface that not easy to  
clean...  anything smelly, not a good tape... my 1.6 cents.
      jk
On Apr 2, 2015, at 1:33 PM, Craig Sullivan 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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> -----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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