microencapsulated adhesive
An adhesive employing microencapsulation (a
procedure for containing liquids, e.g., the dye in
carbonless copy paper, in microscopic pods which
are crushed to release their contents) so as to
cause it to act instantly, i.e., the adhesive sets
the instant the capsules are crushed. The
"adhesive," for example, could be applied to the
boards or board papers of a book at any time
during binding. Pressing the book would crush the
capsules creating the adhesive. The process would
have particular use in edition binding, as it
would solve the problem o f timing inherent in
most modern machines, where the glue (at the
correct temperature and viscosity) must reach its
application area (in correct film thickness) an
instant after the work is properly positioned but
before machine pressure is applied, which is a set
of circumstances very difficult to keep in proper
adjustment. The use of microencapsulated adhesives
would also be of considerable benefit to library
binders. As of this time, such adhesives are only
in the experimental stage. (89 )
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