Appeal 2007-1168
Application 10/211,407
a layer [14] of meltblown polypropylene fibers;
and a second fibrous layer [16] selected from a group of
fibers consisting of polyester, polypropylene, polyethylene,
fiberglass, natural fibers, nylon, rayon and blends thereof,
wherein said layer of meltblown polypropylene fibers [14] is
sandwiched between said first [12] and second [16] fibrous
layers
wherein said first fibrous layer [12], said layer of meltblown
polypropylene fibers [14] and said second fibrous layer [16] are
bonded together by means of heat, spray adhesive or both;
said first fibrous layer [12] having a thickness of between about
0.5 and about 5.0 cm, said layer of meltblown polypropylene
fibers [14] having a thickness of between about 0.0127 and
about 0.254 cm and said second fibrous layer [16] having a
thickness of between about 0.5 and about 5.0 cm.
(Br. at 25, (Claims Appendix); paragraphing and bracketed bold labels to
Figure 2 added.)
11. Of the remaining claims, claims 2, 4, and 6–10 depend from claim 1,
while claims 12–18 depend from claim 11, and claims 19 and 20 are
independent claims.
12. The remaining claims recite further limitations, including the
thickness and weight per unit area of the first (and second) fibrous layers,
the weight per unit area of the meltblown polypropylene layer, and further
limitations on the diameter of fibers in the meltblown polypropylene layer.
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