Appeal 2007-4259
Application 10/417,752
free formaldehyde while maintaining acceptable wet and dry tensile
properties” (Iacoviello, col. 2, ll. 23-26).
DeWitt discloses the print bonding of a non-woven web with a binder
that contains an opacifying agent. DeWitt discloses the visual pattern
printed on the non-woven web is enhanced by the addition of an opacifying
agent (DeWitt, col. 5, ll. 19-22).
Like Iacoviello, DeWitt recognized that it was desirable to avoid
components which give rise to formaldehyde (DeWitt, col. 4, ll. 15-18).
This recognition does not indicate that an opacifying agent would not
function in a binder that comprises some amount of N-methylol acrylamide.
Gorley discloses a premoistened non-woven wipe that incorporates an
opacifying agent to increase its opacity and teaches that the binder contains
the opacifying agents. (Gorley 2-3)
Thus, the present record reveals that a person of ordinary skill in the
art would have recognized the need to produce compositions that have
reduced formaldehyde. A person of ordinary skill in the art would have
recognized the suitability of utilizing opacifying agents in binding
compositions for nonwoven fibers. A person of ordinary skill in the art
would have reasonably expected that the incorporation of an opacifying
agent in the binder composition of Iacoviello would have produced
nonwoven materials that had increased opacity.
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