Conservation * Condition Issues
BLOCKING

The reactivation by moisture of the binder in the medium on a support which causes it to stick to anything brought into contact with it, such as a facing page in a manuscript.
# The image shows the effect of blocking, after the two pages that stuck together were loosened: the transfer of pigments and paper fibres to the opposite paper surface.
 
Click to see an enlargement
UBL Or. 3101

 

 

AUTHORS: PAUL HEPWORTH AND KARIN SCHEPER