Appeal No. 2001-1078 Page 5
Application No. 08/750,910
release oxygen in a delayed manner to a liquid sucked up into
the porous product. As shown in Figure 1, a small block 1
includes one layer 2 of water-repellent mineral wool flakes
between layers 3 and 4 of water-absorbing mineral wool.
Figure 6 shows diagrammatically a strip of water-absorbing
mineral wool 11 having a layer of water-repellent flakes of
mineral wool 14 which is folded together several times in a
zigzag pattern. Blok teaches (column 5, lines 35-39) that
after the being folded, small blocks, such as shown in Figure
1, can be cut out of a strip of this type along the broken
lines 15 shown in Figure 6.
Dunn discloses cultivation substrates based on mineral
wool. As shown in Figure 3, a substrate for cultivation
without soil is based on a mineral fibre felt and packaged
into the form of cakes 10 capable of supporting a plurality of
plants. Dunn teaches that the structure of the cakes is such
that in the position of use the fibers are arranged
essentially in vertical planes 9 and thereby plant production
is improved.
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