Encapsulation

In response to Joan ten Hoor's question regarding the encapsulation of
(bi)folios for subsequent binding (in post-binders) or the encapsulation
of several folios as in the case of pamphlets I have the following
information. In my 2+ years working with Bill Minter we have on several
occasions had to deal with cases exactly like those which Joan is facing
at the Newberry.

We use 2 mil ICI Melinex 516 and encapsulate the item as one normally
would. Our machine, which is identical to the Newberry's would be run at
a speed of 65 with no shim.  This is based on an initial gap of 2.5 mil.
If a satisfactory weld is not formed it may be necessary to modify the
speed or gap.  If the item is to be bound in a post-binder the binding
edge would be left longer by an inch and a half or so.  with 2 mil both
pieces should be left longer for added strength.  The encapsulated item
can then be folded along the original fold line.

For pamphlets or magazines which need to be encapsulated in a folio
format, 2 mil should again be used and the items encapsulated either "to
size" or with the foredge left longer.  This could then be trimmed so
that the foredge is flush.  It can then be sewn with a pamphlet stitch.

Bill has also developed many other methods to encapsulate unusual items
and is willing to share these.  He can be reached at (312) 248-0624.

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                  Conservation DistList Instance 4:47
                  Distributed: Sunday, March 10, 1991
                        Message Id: cdl-4-47-002
                                  ***