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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Interesting does not sound like our old friend white powder
which was limited to 3m’s 420 (brown box)<br>
and Memorex Chroma 90 Buff boxes, but the problem was long gone by the
time 1” tapes came on the scene<br>
<br>
<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Walter 399 was that the pale green spool , reliable or it was 38
years back just not got the signal to noise of a modern tape<br>
I think V78 was another one in the same bracket <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Trevor<br>
UK Member<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'>
<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
quadlist-bounces@quadvideotapegroup.com
[mailto:quadlist-bounces@quadvideotapegroup.com] <b>On Behalf Of </b>Steve
Greene<br>
<b>Sent:</b> 17 March 2010 16:47<br>
<b>To:</b> quadlist@quadvideotapegroup.com<br>
<b>Subject:</b> Re: [QuadList] Plasticizer<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><span
style='font-family:"Tahoma","sans-serif"'>Walter,</span><span style='font-size:
10.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p>
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<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><span
style='font-family:"Tahoma","sans-serif"'>I worked with a sizable collection of
two-inch that straddled the non-backcoated (3M's 849 and 399) and backcoated
(400) tape stocks. The white crystalline deposits were common on the
backcoated stocks and non-existent on the non-backcoated stuff. I suspect
it was part of a program to create stocks that were more supple and less prone
to flaking off the base.</span><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p>
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<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p>
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<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><span
style='font-family:"Tahoma","sans-serif"'>Unless you've heard from a materials
chemist, I'm leary of unilaterally declaring it "plasticizer".
I tend to think of it more generically as a binder hydrolysis by-product.
This fits with the similar experience on the audio side of the appearance of
new back-coated tape stocks being linked to sticky-shed.</span><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><o:p></o:p></span></p>
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<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <o:p></o:p></span></p>
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<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><span
style='font-family:"Tahoma","sans-serif"'>Steve Greene<br>
Audiovisual Archivist<br>
Nixon Presidential Library and Museum<br>
(301) 837-1772</span><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'><br>
<br>
>>> walterforsberg@gmail.com 3/17/2010 11:15:02 AM >>><o:p></o:p></span></p>
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<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'>Hello
Quad Groupers-<o:p></o:p></span></p>
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<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'> <o:p></o:p></span></p>
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<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'>I'm
looking for info / documentation / personal experiences any of you may have had
with white plasticizer, offering itself up from the winds/packs
of 2" and 1" videotape. <o:p></o:p></span></p>
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<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'> <o:p></o:p></span></p>
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<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'>Specifically,
are there any trends or commonly believed reasons for this stuff appearing?
(Eg. specific stocks, a particular environmental storage condition, or
manufacturer's container / reel materials.)<o:p></o:p></span></p>
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<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'> <o:p></o:p></span></p>
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<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'>I'd also
be happy to receive a quoted forward of past discussions on this topic, as I'm
a relative newbie to the list. <o:p></o:p></span></p>
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<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'> <o:p></o:p></span></p>
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<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'>Happiest
shamrocks & thanks in advance,<o:p></o:p></span></p>
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<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'> <o:p></o:p></span></p>
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<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'>Walter
Forsberg<o:p></o:p></span></p>
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<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'>NYU-MIAP<o:p></o:p></span></p>
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<p class=MsoNormal style='margin:0cm;margin-bottom:.0001pt'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'> <o:p></o:p></span></p>
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