GB1224037A - A method for manufacturing high tenacity polycapramide filaments - Google Patents

A method for manufacturing high tenacity polycapramide filaments

Info

Publication number
GB1224037A
GB1224037A GB3233968A GB3233968A GB1224037A GB 1224037 A GB1224037 A GB 1224037A GB 3233968 A GB3233968 A GB 3233968A GB 3233968 A GB3233968 A GB 3233968A GB 1224037 A GB1224037 A GB 1224037A
Authority
GB
United Kingdom
Prior art keywords
filaments
ratio
polycapramide
stages
drawn
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.)
Expired
Application number
GB3233968A
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.)
Toray Industries Inc
Original Assignee
Toray Industries Inc
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 Toray Industries Inc filed Critical Toray Industries Inc
Publication of GB1224037A publication Critical patent/GB1224037A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
    • D02J1/228—Stretching in two or more steps, with or without intermediate steps
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/60—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Artificial Filaments (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Abstract

1,224,037. Polycapramide filaments. TORAY INDUSTRIES Inc. 5 July, 1968 [8 July, 1967 (3)], No. 32339/68. Heading B5B. Polycapramide filaments are made by a spinning process in which molten polycapramide is extruded through a spinneret to form filaments and solidified by cooling, and a drawing process in which the solidified filaments are drawn in at least three stages so that there exists in each of the drawing stages the following relations between drawing ratio (R), which is the ratio of the length of the drawn filament with respect to the undrawn filament, and alpha-form crystal content (Z) of the resultant drawn filament: 12À5 # Z # 35 when 1 # R # 3 and 13À75R- 28-75 # Z # 13À75R-6À25 when R73, and in at least two stages neither or which is the final drawing stage the filaments are drawn into filaments having a birefringence not exceeding 45 x 10<SP>-3</SP> and a ratio from 0À5 to 1À75 of alphaform crystal content with respect to that of the undrawn filaments. A further improvement is that at least two earlier drawing stages are such that the drawing ratio (X) is determined by the following equation where X is the drawing ratio and Y is the density ratio of the filaments in at least two earlier drawing stages with respect to the undrawn filaments.
GB3233968A 1967-07-08 1968-07-05 A method for manufacturing high tenacity polycapramide filaments Expired GB1224037A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP4378967 1967-07-08
JP4378567 1967-07-08
JP4378867 1967-07-08

Publications (1)

Publication Number Publication Date
GB1224037A true GB1224037A (en) 1971-03-03

Family

ID=27291667

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3233968A Expired GB1224037A (en) 1967-07-08 1968-07-05 A method for manufacturing high tenacity polycapramide filaments

Country Status (3)

Country Link
DE (1) DE1760835A1 (en)
FR (1) FR1581029A (en)
GB (1) GB1224037A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5865008A (en) * 1981-09-08 1983-04-18 Toyobo Co Ltd Polyamide fiber with high strength and its production
JPS58136823A (en) * 1982-02-06 1983-08-15 Toyobo Co Ltd Polyamide fiber

Also Published As

Publication number Publication date
DE1760835A1 (en) 1972-01-05
FR1581029A (en) 1969-09-12

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