Franklin,
Thanks to everyone for your responses on this so far.
Do I understand correctly that you use a standard LPI and totally
cover, or "tent" over the vias, then UV cure, then repeat on other
side? And the UV cure keeps the LPI from creating a blow-hole during
assembly? Or are you UV curing a separate "plug" material, then LPI
covering?
Jeff Hempton
UT Electronic Controls
______________________________ Forward Header __________________________________
Subject: [TN] To plug or not to plug
Author: Franklin Asbell <[log in to unmask]> at Internet
Date: 03/17/2000 7:22 AM
One solution we found to the LPI plugging issue is:
STEP 1: Coat, tack, image, cure, then follow up with a UV cure one one side.
STEP 2: Repeat step 1 for the opposite side
Yes, this is somewhat time consuming; however, it has worked out great in the
few exceptional jobs we needed to do this on.
I welcome all other reasonable solutions.
Thanks,
Franklin D Asbell
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<DIV><FONT face=Arial size=2>One solution we found to the LPI plugging issue
is:</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>STEP 1: Coat, tack, image, cure, then follow
up with a UV cure one one side.</FONT></DIV>
<DIV><FONT face=Arial size=2>STEP 2: Repeat step 1 for the opposite
side</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Yes, this is somewhat time consuming; however, it
has worked out great in the few exceptional jobs we needed to do this
on.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>I welcome all other reasonable
solutions.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Thanks,</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Franklin D Asbell</FONT></DIV></BODY></HTML>
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