JPS5679715A - Extremely fine fiber and its production - Google Patents

Extremely fine fiber and its production

Info

Publication number
JPS5679715A
JPS5679715A JP15592479A JP15592479A JPS5679715A JP S5679715 A JPS5679715 A JP S5679715A JP 15592479 A JP15592479 A JP 15592479A JP 15592479 A JP15592479 A JP 15592479A JP S5679715 A JPS5679715 A JP S5679715A
Authority
JP
Japan
Prior art keywords
fine fiber
extremely fine
production
less
filament denier
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
Application number
JP15592479A
Other languages
Japanese (ja)
Other versions
JPS648085B2 (en
Inventor
Hiroshige Sugiyama
Tokio Kawaguchi
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.)
Toyobo Co Ltd
Original Assignee
Toyobo 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 Toyobo Co Ltd filed Critical Toyobo Co Ltd
Priority to JP15592479A priority Critical patent/JPS5679715A/en
Publication of JPS5679715A publication Critical patent/JPS5679715A/en
Publication of JPS648085B2 publication Critical patent/JPS648085B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Artificial Filaments (AREA)

Abstract

PURPOSE: Extremely fine fiber composed of ethylene terephthalate units containing a specific amount of butylene terephthalate unit is given a specific thermal property to become deeply dyeable and get soft and flexible touch.
CONSTITUTION: In the production of extremely fine fiber that has a filament denier D of less than 0.5 and is composed of ethylene terephthalate, 26W56D, preferably 65W130Dmol% of butylene terephthalate is added and the mixture is polymerized, melt spun, solidified by cooling with cooling air and drawn wherein the throughput G in g/min, cross section area of nozzle hole A in mm2 and hole density δ in hole number/cm2 satisfy equations I through III. Thus, polyester extremely fine fiber of 0.5 or less filament denier, lower then 245°C melting point, and lower than 135°C Tα at which the mechanical loss tangent tanδ becomes maximum is obtained.
COPYRIGHT: (C)1981,JPO&Japio
JP15592479A 1979-11-30 1979-11-30 Extremely fine fiber and its production Granted JPS5679715A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15592479A JPS5679715A (en) 1979-11-30 1979-11-30 Extremely fine fiber and its production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15592479A JPS5679715A (en) 1979-11-30 1979-11-30 Extremely fine fiber and its production

Publications (2)

Publication Number Publication Date
JPS5679715A true JPS5679715A (en) 1981-06-30
JPS648085B2 JPS648085B2 (en) 1989-02-13

Family

ID=15616479

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15592479A Granted JPS5679715A (en) 1979-11-30 1979-11-30 Extremely fine fiber and its production

Country Status (1)

Country Link
JP (1) JPS5679715A (en)

Also Published As

Publication number Publication date
JPS648085B2 (en) 1989-02-13

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