Photocopy adhered to plastic film

A fusion between the toner lines of a photocopy and the plastic
pocket (obviously not polyester) it is enclosed in, seems to be
caused by the migration of the plasticiser contained in the plastic
film. This adhesion doesn't allow us to remove the photocopies from
the pockets without damaging the toner lines. Has anybody been
confronted to this type of problem and developed expertise to deal
with it (e.g. heat, cold, solvent)?

Chantal Schwendener
Bestandserhaltung SLB
Schweizerische Landesbibliothek
Hallwylstrasse 15
3003 Bern


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                  Conservation DistList Instance 19:34
                Distributed: Thursday, February 2, 2006
                       Message Id: cdl-19-34-032
                                  ***