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Re: About paper grain

Fascinating information!  I wonder if it has not been in the conservation
literature, or if I've overlooked it.

Maybe your explanation would explain why some paper that has been torn for a
long time is difficult to mend. Imagine a sheet that has been folded in
thirds, and is torn almost completely apart at the folds.  I've thought of
it as the sheet coming to act as almost as three separate pieces of paper,
each drying to their own center.  So there can be significant gaps when
trying to do mending.

With your explanation, as a sheet gets "wet" and "dry" with constant changes
in the storage environment, maybe it could be viewed as being constrained
differently by itself (where the sheet is attached to itself, versus where
the tears are).  So the tensions in the sheet change.

Cathy Atwood

-----Original Message-----
From: Richard P. Grant [mailto:Dick_Grant@COMPUSERVE.COM]
Sent: Saturday, June 17, 2000 7:58 AM
Subject: About paper grain

I thought it might be helpful to make a few comments regarding paper

...an understanding of the mechanism of dried in strains is important for
understanding dimensional stability, curl, and distortion in single and
multiply papers and boards but that is another subject.

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