JPS5442424A - Fibrous hollow film and its production - Google Patents
Fibrous hollow film and its productionInfo
- Publication number
- JPS5442424A JPS5442424A JP10964977A JP10964977A JPS5442424A JP S5442424 A JPS5442424 A JP S5442424A JP 10964977 A JP10964977 A JP 10964977A JP 10964977 A JP10964977 A JP 10964977A JP S5442424 A JPS5442424 A JP S5442424A
- Authority
- JP
- Japan
- Prior art keywords
- voids
- sheath
- diameter
- solvent
- core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE: Special sheath-core conjugate fibers which are composed of the sheath of high-molecular-weight polymer solution in an oragnic solvent and the core of a specific coagulation liquid are introduced into the coagulation bath that has higher coagulation capability, thereby producing said fibrous hollow films with high separability and water permeability.
CONSTITUTION: The spinning of sheath-core conjugate fibers is conducted by using an acrylonitrile polymer solution in an organic solvent as the sheath component, a 30wt% or lower solution of a solvent with high coagulability as the core component and a 70wt% or higher solution of the solvent as the coagulation bath. The innermost layer of the resulting fibrous hollow films is dense and does not contain substantially any voids with diameter of 500Å or larger, the intermediate layer contains voids of 500Å to 2μ diameter and the outermost layer contains voids 1,000Å to 5μ diameter wherein these voids connect to each other to form network. Further isolating large voids have 5W100μ long diameter and 1W30μ short dismeter open toward the outersurface and stand redially toward the center.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10964977A JPS6025525B2 (en) | 1977-09-12 | 1977-09-12 | Hollow fibrous membrane and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10964977A JPS6025525B2 (en) | 1977-09-12 | 1977-09-12 | Hollow fibrous membrane and its manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5442424A true JPS5442424A (en) | 1979-04-04 |
| JPS6025525B2 JPS6025525B2 (en) | 1985-06-19 |
Family
ID=14515630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10964977A Expired JPS6025525B2 (en) | 1977-09-12 | 1977-09-12 | Hollow fibrous membrane and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6025525B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4464321A (en) * | 1981-10-08 | 1984-08-07 | Anic S.P.A. | Process for the preparation of chitosan fibers |
| WO1987000213A1 (en) * | 1985-06-27 | 1987-01-15 | Mitsubishi Rayon Co., Ltd. | Composite hollow yarn and a process for producing the same |
| JPH06343842A (en) * | 1993-04-12 | 1994-12-20 | Daicel Chem Ind Ltd | Cellulose acetate hollow fiber separation membrane |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4787528A (en) * | 1985-04-08 | 1988-11-29 | Stant Inc. | Tip-proof car and filler neck |
-
1977
- 1977-09-12 JP JP10964977A patent/JPS6025525B2/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4464321A (en) * | 1981-10-08 | 1984-08-07 | Anic S.P.A. | Process for the preparation of chitosan fibers |
| WO1987000213A1 (en) * | 1985-06-27 | 1987-01-15 | Mitsubishi Rayon Co., Ltd. | Composite hollow yarn and a process for producing the same |
| US4741829A (en) * | 1985-06-27 | 1988-05-03 | Mitsubishi Rayon Co., Ltd. | Composite hollow fibers and method of making same |
| JPH06343842A (en) * | 1993-04-12 | 1994-12-20 | Daicel Chem Ind Ltd | Cellulose acetate hollow fiber separation membrane |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6025525B2 (en) | 1985-06-19 |
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