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Date: | Thu, 20 Mar 97 11:03:29 MST |
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Dear Mr. Westheimer,
Please contact Mr. John Whitley of my company. (602)-268-3461.
Thank You
Richard Olsen
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Richard Olsen Telephone (602)-232-9154
Continental Circuits Corp. Main (602)-268-3461
3502 East Roeser Road Fax (602)-268-0208
Phoenix Arizona Pager (602)-310-6245
85040-2905 Internet [log in to unmask]
USA I make circuit boards,what do you do?
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______________________________ Reply Separator
_________________________________ Subject: Photo Via
Author: Richard Olsen at C3-MAILROOM Date: 3/19/97 11:52 AM
From: Scott Westheimer
Date: 3/19/97
We are working with Ciba's epoxy and building Photovia's. We have
encountered a strange problem with the plated copper over the epoxy. The
peel strengths over laminate areas are better than the peel strengths over
oxided copper areas. Have any of you, that are either using or are
evaluating this process, encountered the same? Also we see that KMno4
attack is inconsistent. Same time temperature and concentration and
processed the same way. Any information on this and how you are running in
production would be helpful.
Thanks,
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