发明名称 |
COMPOSITE MEMBRANE SUBSTRATE AND COMPOSITE MEMBRANE USING SAME |
摘要 |
An object of the present invention is to provide a composite membrane support composed of a dry process thermoplastic resin filaments nonwoven fabric having a significantly high uniformity to enable formation of a porous layer free from strike-through or a defect such as pinhole at the film formation, producing no skin layer defect at the formation of a skin layer, and being excellent in the mechanical strength and dimensional stability at high temperatures, and a high-performance composite membrane and a composite membrane element each using the composite membrane support. The composite membrane support of the present invention is a laminate dry process thermoplastic resin filaments nonwoven fabric comprising three or more layers containing at least a meltblown fiber layer as an interlayer and spunbond fiber layers on both sides of the interlayer, wherein the average value of air flow resistance is from 2.0 to 30.0 kPa·s/m and the ratio between the average value and the standard deviation of air flow resistance is 0.6 or less. |
申请公布号 |
EP2425889(A1) |
申请公布日期 |
2012.03.07 |
申请号 |
EP20100769811 |
申请日期 |
2010.04.28 |
申请人 |
ASAHI KASEI FIBERS CORPORATION;NITTO DENKO CORPORATION |
发明人 |
YOSHIDA, MINORU;UENO, IKUO;MATSUO, NORIHISA;ISHIZUKA, HIROTOSHI;FUJIOKA, HIROKI;NISHI, MIEKO |
分类号 |
B32B5/26;B01D63/10;B01D69/10;B01D69/12;D04H1/559;D04H3/02;D04H3/14 |
主分类号 |
B32B5/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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