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August 1999

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TechNet <[log in to unmask]>
Subject:
[Fwd: Flex-rigid Lamination]
From:
Chuck Brummer <[log in to unmask]>
Date:
Tue, 17 Aug 1999 11:03:16 -0700
MIME-Version:
1.0
Organization:
acuson
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"TechNet E-Mail Forum." <[log in to unmask]>, Chuck Brummer <[log in to unmask]>
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text/plain (387 bytes) , message/rfc822 (4 kB) 
I forgot to ask at what level your failures occur.  I do have two
suggestions.
First, it is difficult to fill one ounce copper with one mil adhesive.
(.025 with .035 adhesive)  use 1 1/2 or 2 mil adhesive.  Second, on the
FR4 cores use laminate with copper both sides and etch the copper off
the side you want to bond to, the copper tooth leaves greater surface
area.

Good Luck

Chuck Brummer
Acuson

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