Werner, then why a problem. If Tg180 has half the water absorption of Tg130, and you double the water pressure, won't the result be the same? If Archimedes fills his bathtub in a way, that the water rise equals the upper edge when he jumps in, and next time doubles the size of the bathtub but jumps in together with his wife, won't it be the same? It seems to me that he shouted 'Eureka' twice. Inge ________________________________ From: [log in to unmask] [mailto:[log in to unmask]] Sent: den 28 augusti 2007 22:22 To: Hernefjord Ingemar; [log in to unmask] Subject: Re: [TN] Baking out board moisture Hi Inge, The problem is not a higher moisture absorption with higher Tg, but the doubling of the vapor pressure for the same moisture absorption going from 220 to 260C. Werner ************************************** Get a sneak peek of the all-new AOL at http://discover.aol.com/memed/aolcom30tour --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------