-----Original Message-----
From: kevinyeah [mailto:[log in to unmask]]
Sent: Monday, January 07, 2002 7:17 PM
To: [log in to unmask]
Subject: [TN] hole wall pull away and resin recessionDear all!
I am bothered by the"hole wall pull away" or "resin recession" these days.
Who would like to tell me something about these defects?
What's the main causes to induce these problem? I think the process of PCB and the resin system of laminate are most probably. Someone told me that Japanese CCL producer add some filling into FR-4 resin system to solve this problem. Is it possible and what's the filling?
As for PCB shop, do you have any concrete standards to check this defect? Please tell me if you have!
Thank you very much up front!
With best regards!
Kevin