Appeal No. 97-4294 Page 17
Application No. 08/294,155
superabsorbent fibers include Allied Colloids/Courtalds FSA®
101 and 111; ARCO FIBERSORB from Arco Corporation of®
Philadelphia, Pa.; and TOYO BOSEKI KK Lanseal from Toyo Boseki
KK of Osaka, Japan.
Jackson teaches that the fine wettable fiber is a fiber
which is very small in diameter in comparison to the fibers
found in the conventional fluff-based absorbent core materials
and the superabsorbent fibers defined above. Typically, the
fine wettable fiber will have a length less than about 2
millimeters and a fiber diameter less than about 5 microns and
generally the diameter will be between about 0.5 and 2.0
microns. The fiber should either have inherent hydrophilic
properties or be treated so as to have such properties. As a
result, the fine wettable fiber will have an advancing contact
angle less than 90° and generally less than 70° using
deionized water. Hoechst Celanese cellulose acetate Fibrets®
fibers from Hoechst Celanese Corporation of Charlotte, N. C.
is an example of such fine
wettable fibers. The Hoechst Celanese Fibrets fibers are®
highly
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