Because this is so sporadic it makes me wonder if the panels 
     displaying these problems were stripped and recoated?  Panels that get 
     stripped and recoated are often insufficiently cleaned prior to 
     recoating, this may account for the randomness of the problem.
     
     Scott Baller
     Engineering Manager
     Multek (Roseville) 


______________________________ Reply Separator _________________________________
Subject: Dry Film Breakdown
Author:  [log in to unmask] at INTERNET_GATEWAY
Date:    9/13/96 5:33 AM


We are experiencing sporadic dry film breakdown using Dynachem HG 2 mil 
film. The laminators have
been thoroughly checked out so we don't suspect them and. The problem we are 
seeing is what looks
like a seeping under the film in copper plating. When the panels are 
completed the traces are
somewhat irregular and not as crisp edged as normal. What is frustraing is 
that this happens so
sporadically and may only affect a couple of panels out of a long run or all 
panels in a short run.
     
Any suggestions would be greatly appreciated.
     
Jim Moritz
ES&D
     
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