i am also interested in vacuum desiccating after oxide instead of baking. someone please reply. thank you. andy white ------------- From: [log in to unmask] (keith larson) To: [log in to unmask] cc: Date: Fri, 30 Aug 96 13:20:57 -0500 (CDT) Subject: RE: Vacuum Desiccating FYI >Return-Path: <[log in to unmask]> >Received: by mail.airmail.net (/\##/\ Smail3.1.30.16 #30.74) > id <[log in to unmask]>; Fri, 30 Aug 96 10:56:25 -0500 (CDT) >Received: from ipc.org by simon.ipc.org via SMTP (940816.SGI.8.6.9/940406.SGI) > id KAA16319; Fri, 30 Aug 1996 10:46:40 -0700 >Resent-Date: Fri, 30 Aug 1996 10:46:40 -0700 >Received: by ipc.org (Smail3.1.28.1 #2) > id m0uwVH8-0000QFC; Fri, 30 Aug 96 10:14 CDT >Resent-Sender: [log in to unmask] >Old-Return-Path: <[log in to unmask]> >X400-Received: by /c=US/admd=MCI/prmd=Honeywell/; converted ( IA5-Text); > Relayed; 30 Aug 1996 10:21:24 -0500 >X400-Received: by mta HW-MTA-AZ in /c=US/admd=MCI/prmd=Honeywell/; converted ( > IA5-Text); Relayed; 30 Aug 1996 10:21:24 -0500 >X400-MTS-Identifier: [/c=US/admd=MCI/prmd=Honeywell/; 06638322706F452A-HW-MTA-AZ] >Content-Identifier: 06638322706F452A >Content-Return: Allowed >X400-Content-Type: P2-1988 ( 22 ) >Conversion: Allowed >Original-Encoded-Information-Types: IA5-Text >Priority: normal >Disclose-Recipients: Prohibited >Alternate-Recipient: Allowed >X400-Originator: [log in to unmask] >X400-Recipients: non-disclosure; >Message-Id: > <06638322706F452A*/c=US/admd=MCI/prmd=Honeywell/o=AZ-MTA/ou=MSMail/ou=CAS/s= Edwards/g=Ted/i=A/@MHS> >Date: 30 Aug 1996 10:21:24 -0500 >From: "Edwards, Ted A (AZ75)" <[log in to unmask]> >To: "[log in to unmask]" <[log in to unmask]> (Return requested) >Subject: RE: Vacuum Desiccating >MIME-Version: 1.0 >Resent-Message-ID: <"lpdfh3.0.qfE.6Lm9o"@ipc> >Resent-From: [log in to unmask] >X-Mailing-List: <[log in to unmask]> archive/latest/6031 >X-Loop: [log in to unmask] >Precedence: list >Resent-Sender: [log in to unmask] > >When we were in the board fabrication business, we did not store layers in a >vacuum with desiccant but when we used vacuum frame we would pull a vacuum >and hold it for more than 30 minutes before lamination. When we switched to >a vacuum lamination we continued to use a vacuum in the press and hold >before lamination. We also pulled a vacuum on the prepreg and back filled >it's storage chamber with dry nitrogen. The froth at the edge of the board >when down but we did not know if that was from the vacuum steps or the fact >we went to low pressure lamination when we switched to vacuum lamination. > ---------- >From: [log in to unmask] >To: [log in to unmask] >Subject: Vacuum Desiccating >Date: Friday, August 30, 1996 6:38AM > >Has anyone done testing, or incorporated as part of normal processing, the >use of vacuum desiccating instead of baking after layer oxide coating, prior >to >lay-up and lamination. I would appreciate any information that is available. > > >Bob G. > >*************************************************************************** >* TechNet mail list is provided as a service by IPC using SmartList v3.05 * >*************************************************************************** >* To unsubscribe from this list at any time, send a message to: * >* [log in to unmask] with <subject: unsubscribe> and no text. * >*************************************************************************** > >*************************************************************************** >* TechNet mail list is provided as a service by IPC using SmartList v3.05 * >*************************************************************************** >* To unsubscribe from this list at any time, send a message to: * >* [log in to unmask] with <subject: unsubscribe> and no text. * >*************************************************************************** > > > andy white *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To unsubscribe from this list at any time, send a message to: * * [log in to unmask] with <subject: unsubscribe> and no text. * ***************************************************************************