We spray most boards at an angle to get vertical surfaces, rotate,
repeat for remaining sides and then finish with a perpendicular coat.
The edges get coated as a result.  Some customers will have a note to
coat the edges on their drawing.  We do not apply extra coating just for
the edges.  Some boards are coated in a panel and are singulated later
by the customer - no coating on the edges where the score or tab is.
With dip coating, a drip edge may form which could increase the board
size and cause a fit problem.   

FWIW,
Mike
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Douglas Pauls
Sent: Wednesday, October 20, 2010 1:21 PM
To: [log in to unmask]
Subject: [TN] Conformal Coating Board Edges

Good afternoon all,

I am glad we all appreciate Inge and the time he puts into making this a

fun and interesting forum.  To sum up: Ditto.

I have a question related to conformal coating, a sort of survey.  For 
those of you that conformally coat your assemblies, do you coat the
edges 
of the boards?  Why or why not?

There is an internal debate here and I wanted some other viewpoints
before 
offering my own.

Doug Pauls
Rockwell Collins

______________________________________________________________________
This email has been scanned by the MessageLabs Email Security System.
For more information please contact helpdesk at x2960 or
[log in to unmask] 
______________________________________________________________________

---------------------------------------------------
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
-----------------------------------------------------

______________________________________________________________________
This email has been scanned by the MessageLabs Email Security System.
For more information please contact helpdesk at x2960 or [log in to unmask] 
______________________________________________________________________

---------------------------------------------------
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
-----------------------------------------------------