Fabric (woven – knitted – or nonwoven textile or cloth – etc.) – Nonwoven fabric – Including strand or fiber material which is of specific...
Reexamination Certificate
2005-12-19
2011-10-11
Juska, Cheryl (Department: 1798)
Fabric (woven, knitted, or nonwoven textile or cloth, etc.)
Nonwoven fabric
Including strand or fiber material which is of specific...
C442S340000, C442S415000, C442S381000, C442S382000, C442S392000, C264S175000, C264S165000
Reexamination Certificate
active
08034729
ABSTRACT:
A separation membrane support substrate characterized by being composed of a laminated nonwoven fabric comprising a front layer as the resin coating layer, a middle layer and a back layer which are integrally formed by heat bonding, and by satisfying the following conditions (1) to (5): (1) The front layer has at least one layer comprising thermoplastic resin filaments with a single filament diameter of 7-30 μm; (2) the middle layer has at least one layer comprising melt blown fibers with a single fiber diameter of no greater than 5 μm, and a fiber basis weight of at least 1 g/m2and comprising no more than 30 wt % of the total fiber basis weight; (3) the back layer has at least one layer comprising thermoplastic resin filaments with a single filament diameter of 7-20 μm, and has a fiber basis weight of 3-40 g/m2; (4) the laminated nonwoven fabric has an apparent density of 0.67-0.91 g/cm3; and (5) the laminated nonwoven fabric has a thickness of 45-110 μm.
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Suzuka Ryuji
Yoshida Minoru
Asahi Kasei Fibers Corporation
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Juska Cheryl
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