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August 1999

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Subject:
[Fwd: Flex-rigid Lamination]
From:
Chuck Brummer <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Tue, 17 Aug 1999 11:03:16 -0700
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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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