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Re: "good" plastic vs. "bad" plastic



The "bad" plastic is PVC -- polyvinyl chloride.  The "good" kind is
polyester (the generic term).  Mylar is a brand name and Mylar "Type D" is
what is most often found in the conservation catalogues for use with
documents.  Polypropylene is used with photos and negatives.  There may be
other good and bad types as well.

Catherine Bruck
University Archivist
Illinois Institute of Technology
Paul V. Galvin Library
35 W. 33rd St.
Chicago, IL  60616
312/567-6840
312/567-5318 (FAX)
bruck@iit.edu

-----Original Message-----
From: Archives & Archivists [mailto:ARCHIVES@LISTSERV.MUOHIO.EDU]On
Behalf Of Bridgette Kelly
Sent: Monday, August 27, 2001 1:22 PM
To: ARCHIVES@LISTSERV.MUOHIO.EDU
Subject: "good" plastic vs. "bad" plastic


Hi all!

Don't you just hate it when you know you wrote down a note & now you can't
find it to write something due today?

Somewhere, I have written down (& can't find) just what the "good" plastic
is called (I know mylar) and what the "bad" plastic is called. This is for
an exhibit panel on photo preservation & letting people know what types of
things to look for when purchasing photo albums.

I know the "bad" plastic has that distinctive plastic smell. Is this PVA
(polyvinyl.....?)? Is there another type of plastic generally found in
department stores that isn't very good to store photos in?

I know the "good" plastic is mylar, but isn't there another that is a little
less expensive?

Sorry for the silly questions that every archivist should know but I can't
seem to get my mind to conjure up right now. :)

Feel free to reply to me directly since, I'm sure others don't want to be
bothered.
Thanks for the help!
Bridgette

Bridgette A. Kelly, Special Collections Manager
Stan Hywet Hall & Gardens
714 N. Portage Path
Akron, OH  44303
ph: 330-315-3232   fax: 330-836-2680
BKelly@stanhywet.org   www.stanhywet.org

Mark your calendars! We are preparing for one of the country's best arts and
crafts festivals--The Wonderful World of Ohio Mart, October 4-7, 2001!

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