发明名称 |
Membrane filtration type hollow fibers and method for the preparation of same |
摘要 |
The invention concerns a membrane filtration type hollow fiber. It is composed of a single material phase which material is a chain high polymer such as cellulose acetate and capable of forming fibers by the spinning of the high polymer. The cylindrical wall defining the hollow fiber represents a three-dimensional net-like structure of fine filtering passages. This structure occupies substantially the whole mass of the tubular wall or a closed ring band zone when seen in any cross-section of the wall, providing thus an effective and active filtering zone. The pore rate amounts to at least 55%, and active points of the filtering passages for governing minimum passable sizes of the passages for solids included in a filtering liquor to be treated upon are distributed at random throughout at least the active zone. These sizes are nearly uniform.
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申请公布号 |
US4234431(A) |
申请公布日期 |
1980.11.18 |
申请号 |
US19770831198 |
申请日期 |
1977.09.07 |
申请人 |
ASAHI KASEI KOGYO KABUSHIKI KAISHA |
发明人 |
MISHIRO, MASHAHIRO;NISHIKAWA, TOKIO;OHASHI, SHIGEYASU;YOKOKAWA, YASUO |
分类号 |
D01F2/28;B01D39/02;B01D69/08;B01D71/56;D01D5/24;D01F1/00;D01F1/08;D01F6/00;(IPC1-7):B01D13/04;B01D31/00 |
主分类号 |
D01F2/28 |
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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