Re: [Videolib] 3-M Donut Security Problems

Gerald A. Notaro (
Wed, 7 Sep 2005 10:48:06 -0400 (EDT)

What causes the adhesive to buckle is the heat from the dvd machines. If
you are going to use the donuts, better to use the clear covers 3m sells
to seal the entire dvd. Just don't do it to 2 sided DVD's!


goberle wrote:
> Hi all. I was wondering if anyone else uses the 3-M Donut Security
> system. We are having some trouble with these "strips" coming off of the
> DVD's and ending up mucking up our playback machines. I have not
> personally talked to 3-M but a representative met with our circulation
> staff and has taken a DVD to their labs but we have not heard back from
> them for over a month. It seems like the adhesive on the donut becomes
> less effective when an item/equipment is under heavy use because this is
> only happening to our most popular titles but we can't really be sure
> about this theory. (also it is happening in a variety of different
> equipment) Has anyone had any problems with these security devices.
> Thanks in advance for any insight you may be able to give us...
> Best,
> George
> --
> George D. Oberle III
> Multi-Media Librarian and
> History Department Liaison Librarian
> George Mason University Libraries
> 4400 University Dr. MSN 1A6
> Fairfax, VA 22030
> (703) 993-9012
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