JPS551324A - Production of aromatic polyamide fiber - Google Patents
Production of aromatic polyamide fiberInfo
- Publication number
- JPS551324A JPS551324A JP7151978A JP7151978A JPS551324A JP S551324 A JPS551324 A JP S551324A JP 7151978 A JP7151978 A JP 7151978A JP 7151978 A JP7151978 A JP 7151978A JP S551324 A JPS551324 A JP S551324A
- Authority
- JP
- Japan
- Prior art keywords
- fibers
- aromatic polyamide
- heat treatment
- resulting
- poly
- 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.)
- Pending
Links
Abstract
PURPOSE: soft twists in a specific range and then heat treatment are applied to linearly oriented aromatic polyamide fibers, thus increasing the drawing ratio without yarn breaking and fluff formation and resulting in high Young's modulus.
CONSTITUTION: An optically anisotropic dope of a linearly oriented aromatic polyamide, preferably poly-p-phenylene terephthalamide, or poly-p-benzamide, is extruded into air then wet spun to form the starting fibers. The resulting fibers are soltly twisted so that the twisting index given as the equation, (wherein TM stands for twist multiplier; N, twisting number per meter; D, fiber denier) becomes 0.2W1. Then, the fiber are drawn and heat treated under an atmosphere with a temperature of 150W400, preferably 200W300°C, thereby giving the objective fibers.
EFFECT: Long-time or multistaged heat treatment is not required and high productivity can be readily reached by using simple facilities.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7151978A JPS551324A (en) | 1978-06-15 | 1978-06-15 | Production of aromatic polyamide fiber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7151978A JPS551324A (en) | 1978-06-15 | 1978-06-15 | Production of aromatic polyamide fiber |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS551324A true JPS551324A (en) | 1980-01-08 |
Family
ID=13463040
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7151978A Pending JPS551324A (en) | 1978-06-15 | 1978-06-15 | Production of aromatic polyamide fiber |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS551324A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60173014A (en) * | 1984-02-17 | 1985-09-06 | Matsushita Electric Ind Co Ltd | Dopant removal from polymer |
US5366362A (en) * | 1989-12-22 | 1994-11-22 | The United States Of America As Represented By The Secretary Of The Air Froce | Apparatus for extruding a single aromatic heterocyclic polymeric fiber |
US8339021B2 (en) | 2007-07-31 | 2012-12-25 | Denso Corporation | Spark plug for internal-combustion engine and method for manufacturing the same |
JP2015042791A (en) * | 2013-08-26 | 2015-03-05 | 帝人株式会社 | Method of producing para-type fully aromatic copolyamide stretched fiber |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49110913A (en) * | 1973-03-05 | 1974-10-22 | ||
JPS5012485A (en) * | 1973-04-13 | 1975-02-08 | ||
JPS5130257A (en) * | 1971-04-28 | 1976-03-15 | Du Pont | Horiamidoseni oyobi fuirumu |
-
1978
- 1978-06-15 JP JP7151978A patent/JPS551324A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5130257A (en) * | 1971-04-28 | 1976-03-15 | Du Pont | Horiamidoseni oyobi fuirumu |
JPS49110913A (en) * | 1973-03-05 | 1974-10-22 | ||
JPS5012485A (en) * | 1973-04-13 | 1975-02-08 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60173014A (en) * | 1984-02-17 | 1985-09-06 | Matsushita Electric Ind Co Ltd | Dopant removal from polymer |
JPH0344565B2 (en) * | 1984-02-17 | 1991-07-08 | Matsushita Electric Ind Co Ltd | |
US5366362A (en) * | 1989-12-22 | 1994-11-22 | The United States Of America As Represented By The Secretary Of The Air Froce | Apparatus for extruding a single aromatic heterocyclic polymeric fiber |
US8339021B2 (en) | 2007-07-31 | 2012-12-25 | Denso Corporation | Spark plug for internal-combustion engine and method for manufacturing the same |
US8398447B2 (en) | 2007-07-31 | 2013-03-19 | Denso Corporation | Method for manufacturing spark plug for internal-combustion engine |
JP2015042791A (en) * | 2013-08-26 | 2015-03-05 | 帝人株式会社 | Method of producing para-type fully aromatic copolyamide stretched fiber |
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