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Re: Mylar



The idea with Mylar is that it has a slight electrostatic charge that will
hold together fragile or torn documents.  (It's not recommended for loose
media like charcoal on paper for the same reason: it can pull the particles
right off the paper.)  It also provides a way of viewing documents without
touching them, and the heavier Mylar D (4 mil) can provide support as
well.  The downside is that it creates an enclosed environment which may
speed up acidification.  The conservator at our university library advised
me to place a buffered bond sheet between the back of the document and the
Mylar to retard this process somewhat.  Also, I don't seal the Mylar; I
order it sealed on one long side and leave it that way.  For old documents
that are not falling apart, I just use heavy folders and interleaving paper.

Amy McCrory
Project Archivist
Cartoon Research Library
Ohio State University



>>> Readd@CSPS.COM 09/26/00 08:07AM >>>
I have a question that I thought perhaps the listserve could help me with.
The question has been raised as to the possible pros and cons of using mylar
to house old documents instead of using acid free paper or acid free folders
to file the documents.  Obviously the mylar is more expensive, but does it
really protect the documents better?  Has anyone had any long term negative
results from using mylar?

Donna Read
readd@csps.com <mailto:readd@csps.com>

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