Craig,
We have been using the products from Shercon with good results.  The green 
polyester tape is what we have been using and it seems to work well with 
both Humiseal 1B31 and Humiseal 1H20AR1.  It has a max temp of 400F, but 
that is well above most coating cure steps I know of.

http://www.shercon.com/storefront/PC21Greenployestertape.aspx

They also sell this green tape in rolls of squares and round dots of 
varying sizes.  In a couple years of use, we have had no problems with 
residues or left behind adhesive.

Doug Pauls
Rockwell Collins




Craig Sullivan <[log in to unmask]> 
Sent by: TechNet <[log in to unmask]>
05/16/2011 08:34 AM
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[TN] Conformal Coat tape






Well, I suppose this is a repeat from a few years ago when Humiseal 
stopped selling their conformal coat tape and left everyone searching for 
alternatives.

Recap: Humiseal HT-500 tape was manufactured exclusively for Humiseal by 
St. Gobain. The St. Gobain part number is M797. St. Gobain had numerous 
quality issues and as such Humiseal ceased the line. St. Gobain continues 
to manufacture the tape. We had continued to use the St. Gobain part with 
minor quality problems here and there. We decided to live with the issues 
because the tape works so well with our Acrylic coating.

Fast forward to today: St. Gobain decided to put the tape on a liner to 
correct various issues they and other customers had. Problem is we now see 
excessive residue left on the boards as well as the rolls falling apart if 
we're not careful with handling. They've also scaled back production and 
as such the lead times have quadrupled.

So, my question is can anyone share what they use with their acrylic 
coatings? We use a boat load of this stuff so I need to find a seamless 
replacement.

Thank you,
Craig Sullivan
Manufacturing Engineer
MPL Incorporated
P: 607.266.0480
F: 607.266.0482
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