Don - hollow glass fibers are normally seen as a major defect, responsible
for CAF failures. Most of the glass companies in the world spend time and
money NOT to produce hollow fibers. Can you be more specific re the subject?


Regards,

Gerard O'Brien
Photocircuits Corporation

-----Original Message-----
From: Donald Vischulis [mailto:[log in to unmask]]
Sent: Tuesday, February 01, 2005 5:48 PM
To: [log in to unmask]
Subject: [TN] FAB Question

One of our engineers approached me about the use of hollow glass fibres in
FR-4.  I've never heard of this concept before.  Can anybody educate me?
This is supposedly a new development from Asia.

Don Vischulis

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