[QuadList] Scotch 400--The story behind the bad glue--

[Greg Schmitz]

There was some discussion of Eucalyptus oil on AMIA-L and according to 
some they (Eucalyptus oils) are not all the same.  I can vouch for these 
claims because I use gum Arabic for a variety of things photographic and 
like many botanical products "gum" varies by region, climate, and annual 
rainfall.  Ain't science great!  Mick Newnham from the National Film and 
Sound Archive, Australia, had an interesting post along the same lines 
about Eucalyptus oil, a staple product from his neck of the woods:  
http://lsv.uky.edu/scripts/wa.exe?A2=ind1205&L=AMIA-L&P=R27671&I=-3 .  
Also, a search of the AMIA listserv for Eucalyptus will yield some links 
regarding the foam problem:  http://lsv.uky.edu/scripts/wa.exe?S1=amia-l

--greg


On 8/31/12 12:52 PM, Ted Langdell wrote:
>
>
>
> On Aug 30, 2012, at 3:58 PM, C. Park Seward wrote:
>
>>
>> Not all the foam was bad. The story is another company supplied the 
>> glue that was bad. I'm not sure I believe that. Selling glue to 3M?
>>
>> Best,
>> Park
>
> In the QuadList thread about Foam Tape Reel Flanges last Dec., you 
> might recall this portion of that post:
>
>     In a separate thread about powdery substances
>     <http://cool.conservation-us.org/byform/mailing-lists/arsclist/2005/04/msg00137.html>,
>     videotape restoration facility Spec Brothers' Peter Brothers went
>     into the history of the problem:
>     http://cool.conservation-us.org/byform/mailing-lists/arsclist/2005/04/msg00145.html
>
>
>                 The cushion-flange glue problem only happened on 3M
>                 (Scotch) 1" and 2"
>
>                 video. 
>
>
>                 Most cushioned reels are fine but, at one point, 3M
>                 subcontracted out 
>
>                 the cushion attachment part of the reel manufacture
>                 and the
>
>                 subcontractor used the wrong glue. 
>
>
> 3M devised a process for addressing the problem, and Jim Lindner's 
> Vidipax (since sold/demised) acquired the info on the process and used it.
>
> Linder also reported on the use of Eucalyptus Oil at Screensound (the 
> national archives) in Australia:
> http://cool.conservation-us.org/byform/mailing-lists/arsclist/2005/04/msg00148.html
>
> Be careful, whatever you use.
>
> Ted
>
> Ted Langdell
> Secretary
> Skype: TedLangdell
> e-mail:ted at quadvideotapegroup.com <mailto:ted at quadvideotapegroup.com>
>
>
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