Ioan,
With only a 4 hour pot life, you won't have much screen life at all.
As the adhesive gets wiped across the stencil, and large surfaces of the
adhesive get exposed to the air, its properties will change quickly.
For example, I used to use a single part Ablestik material that had a 7 day
pot life!! We only allowed its use on a stencil/screen printing application
for 8 hrs before we discarded it. You could detect the rheological changes,
even then.
If you need to attain and maintain that kind of print geometry, I recommend
you search for another adhesive with a much longer pot life...
Alternatively, they do make some really small dispense needles, but with the
short pot life I still think you have a challenge in front of you
Steve C
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Ioan Tempea
Sent: Friday, April 29, 2016 9:29 AM
To: [log in to unmask]
Subject: [TN] Stencil printing of conductive epoxy
Dear Technos,
I need to stencil print 4 mil in diameter, as thick as possible, dots of the
Epotek E4110-PFC, see
http://www.epotek.com/site/administrator/components/com_products/assets/file
s/Style_Uploads/E4110.pdf
What is your experience with this material?
Any suggestions regarding stencil design/squeegee material/printing program
parameters?
Thanks,
Ioan Tempea, P. Eng.
Manufacturing Engineer, Satellite Systems
[cid:[log in to unmask]]
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