Appeal 2006-2453
Application 10/302,391
105a and contaminate the permeate flow being transported by fabric
sheet 9. [0012].
12) To avoid this problem, Simonetti applies a substance 106 to the cross-
sectional face 103 of the membrane sheet “at which the lateral flow
path 101b of unfiltered feed flow would begin” to seal the pores along
the edges and thus block the “inlet of unfiltered feed fluid along the
lateral flow path 101b” [0013].
13) In addition, Simonetti discloses applying the substance 106 to “cracks
[that] may appear in a portion of the filter membrane 105b near the
crease in an envelope of filter membrane material or near the
permeate outlet tube.” [0020].
14) Simonetti does not state that the substance used along the edges and at
discrete cracks reinforces the membrane.
15) Simonetti does not specifically state whether the substance 106 is
applied to cracks which form prior to winding the membranes around
the permeate tube.
16) Substance 106 may be a UV curable adhesive. [0015].
17) Bray relates to improvements in spiral wound membrane cartridges
for use in ultrafiltration and, more particularly, to:
sealing and/or reinforcement about the area of the
fold on the membrane sheet, so that in the event of
crack formation in the membrane at the fold, the
feed fluid cannot have access to the permeate
carrier tube thereby contaminating the permeate.
Col. 5, ll. 52-57.
18) Bray discloses that the sealing means used for reinforcement is an
adhesive, preferably polyurethane glue. Col. 6, ll. 10-11.
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