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May 1998

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Subject:
Re: Multilayer Lamination Post-Bake
From:
Phil Dam <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Tue, 5 May 1998 13:57:33 EDT
Content-Type:
text/plain
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text/plain (21 lines) 
Our practice is to NOT bake FR-4 panels after lamination. Why add a non value
added step if you can avoid it?  We fully cure our panels during the
lamination press cycle (for 50 minutes at 350 F) with a stress relief step of
50 psi during the last 15 minutes.  Panels are fully cured and warp/twist
free when using balanced ML (foil) constructions.


Phil Dam

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