JPS551324A - Production of aromatic polyamide fiber - Google Patents

Production of aromatic polyamide fiber

Info

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
Application number
JP7151978A
Other languages
Japanese (ja)
Inventor
Tetsuo Matsushita
Chuzaburo Mera
Yukinari Komatsu
Hirosaku Nagasawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Asahi Chemical Industry Co Ltd
Original Assignee
Asahi Chemical Industry Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Asahi Chemical Industry Co Ltd filed Critical Asahi Chemical Industry Co Ltd
Priority to JP7151978A priority Critical patent/JPS551324A/en
Publication of JPS551324A publication Critical patent/JPS551324A/en
Pending legal-status Critical Current

Links

Landscapes

  • Artificial Filaments (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

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
JP7151978A 1978-06-15 1978-06-15 Production of aromatic polyamide fiber Pending JPS551324A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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