Silicone-treated polyester film

This is a message I received from Aaron Salik of Talas, posted with
permission.

   "I saw your post online and thought I may be able to help.  I
    unfortunately cannot comment much on the aging affect of
    silicone on polyester, but we have encountered the problem you
    describe on a few occasions of batches of new coated film that
    we have had manufactured for us.  The problem is that the
    silicone coating was not properly cured, most likely by UV, and
    this produces exactly the situation you describe.  Silicone will
    always impart a slight hazing on the film, as well as a slight
    greasy feeling due to how smooth it is but not to the extent
    that you describe."

    Aaron Salik
    Talas


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                  Conservation DistList Instance 20:30
                 Distributed: Friday, December 1, 2006
                       Message Id: cdl-20-30-006
                                  ***