Subject: | |
From: | |
Reply To: | TechNet E-Mail Forum. |
Date: | Tue, 21 Dec 1999 14:29:10 -0800 |
Content-Type: | text/plain |
Parts/Attachments: |
|
|
For what purpose?
In my photo print area, we make flexible printed circuits, I keep it between 40 and 50
% RH to keep the photo tools stable. In my lamination lay up area I try to keep it
between 30 and 35% RH because polyimide absorbs moisture very quickly altering the
dimensional stability and causing adhesion problems. If you drive it down too low you
get contamination from the static attraction.
Chuck Brummer
Acuson
818.734.4930
West, Jim wrote:
> Hi Everyone,
>
> What is everyone keeping the RH in your facility? What does everyone
> recommend, or what is the standard if any? What are the down sides to low
> RH as well as high RH. Your opinion is greatly appreciated.
>
> Thanks,
> Jim
>
> ##############################################################
> TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c
> ##############################################################
> To subscribe/unsubscribe, send a message to [log in to unmask] with following text in
> the body:
> To subscribe: SUBSCRIBE TECHNET <your full name>
> To unsubscribe: SIGNOFF TECHNET
> ##############################################################
> Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
> information.
> If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or
> 847-509-9700 ext.5365
> ##############################################################
##############################################################
TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c
##############################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in
the body:
To subscribe: SUBSCRIBE TECHNET <your full name>
To unsubscribe: SIGNOFF TECHNET
##############################################################
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information.
If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or
847-509-9700 ext.5365
##############################################################
|
|
|