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July 1997

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Wed, 16 Jul 1997 17:34:44 -0400
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From [log in to unmask] Mon Jul 21 11:
48:54 1997
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>From willli Wed Jul 16 16:
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Re: Remove prepreg
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Your Desmear process in any multilayer shop is doing exactly this, (although it
may also remove some amount of Cu, ).  Chemistry may depend upon laminate epoxy
system.  Permanganate  is one I am aware of.

Jim Herard
KBL, Product Quality Engineering
IBM Microelectronics Endicott
t/l 857-7026


        [log in to unmask]
        07-16-97 05:57 AM
Please respond to [log in to unmask] @ internet

To: [log in to unmask] @ internet
cc:
Subject: Remove prepreg

Hello everybody

I need some advise

Does somebody know how to remove resin  (prepreg) from copper surface by

chemical means ??

Thanks in advance for any help

Tomer

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