The maximum adhesion available from a pressure sensitive adhesive' determined
by the force necessary to remove a strip of tape from a surface after an
extended period of time.
Unsaturated Polyester, UP
Unsaturated polyester resin exhibit greater shrinkage during cure and poorer
chemical resistance than epoxy.
Urea formaldehyde resin, UF
Made from urea and formaldehyde. Hardens when heated and in the presence of
certain chemical (catalysts or
); this hardening can be rapid and at moderate temperatures.
UV absorber / Light stabilizer
Compounding material which, through its ability to absorb ultraviolet radiation
and render it harmless, retards the deterioration caused by sunlight an other
UV light sources. Incorporated into adhesive, this additive screens the most
harmful UV portion of light and thereby protects films and sensitive substrates
from the photo-destruction.
UV / EB curing adhesive
Adhesive in which the liquid application changes under UV / Electron Beam
exposure within seconds into the completely cured ready adhesive.