GB1075961A - Improvements in or relating to tows of synthetic filaments - Google Patents

Improvements in or relating to tows of synthetic filaments

Info

Publication number
GB1075961A
GB1075961A GB1146/64A GB114664A GB1075961A GB 1075961 A GB1075961 A GB 1075961A GB 1146/64 A GB1146/64 A GB 1146/64A GB 114664 A GB114664 A GB 114664A GB 1075961 A GB1075961 A GB 1075961A
Authority
GB
United Kingdom
Prior art keywords
filaments
polyamide
tow
breaking
tows
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
GB1146/64A
Inventor
Stanley Davies
Vincent Leighton Evans
John David Watt
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB1146/64A priority Critical patent/GB1075961A/en
Priority to US424563A priority patent/US3408251A/en
Publication of GB1075961A publication Critical patent/GB1075961A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G1/00—Severing continuous filaments or long fibres, e.g. stapling
    • D01G1/06—Converting tows to slivers or yarns, e.g. in direct spinning
    • D01G1/08—Converting tows to slivers or yarns, e.g. in direct spinning by stretching or abrading
    • 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
    • D02J1/227—Control of the stretching tension; Localisation of the stretching neck; Draw-pins
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2922—Nonlinear [e.g., crimped, coiled, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2933—Coated or with bond, impregnation or core
    • Y10T428/2964—Artificial fiber or filament
    • Y10T428/2967—Synthetic resin or polymer
    • Y10T428/2969—Polyamide, polyimide or polyester

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Artificial Filaments (AREA)

Abstract

1,075,961. Multifilamentary polyamide tows. IMPERIAL CHEMICAL INDUSTRIES Ltd. Dec. 29, 1964 [Jan. 10, 1964], No. 1146/64. Heading B5B. In the manufacture of a tow suitable for stretch breaking, filaments are extruded from a polyamide having a relative viscosity (defined in the Specification) of 30 or less, the filaments are separated into at least two bundles each of which is subjected to a different level of tension in the squirrel cage of a draw-crimping machine, and the bundles are recombined and then are drawn and crimped according to known procedures to form a tow having a reduced tendency to snap breaking when processed on a stretch-breaking machine. The polyamide, for example polyhexamethylene adipamide, preferably has a relative viscosity of from 27 to 30. To obtain the different levels of tension, a different yarn path in the squirrel cage may be used for each bundle -of filaments. A tow consisting of filaments produced as above preferably has a snap-break rating (defined in the Specification) of less than 10 and exhibits stretching characteristics defined in the Specification with reference to a method described therein and as illustrated in the single graphical figure (not shown).
GB1146/64A 1964-01-10 1964-01-10 Improvements in or relating to tows of synthetic filaments Expired GB1075961A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1146/64A GB1075961A (en) 1964-01-10 1964-01-10 Improvements in or relating to tows of synthetic filaments
US424563A US3408251A (en) 1964-01-10 1965-01-11 Tows of synthetic filaments and method for making the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1146/64A GB1075961A (en) 1964-01-10 1964-01-10 Improvements in or relating to tows of synthetic filaments

Publications (1)

Publication Number Publication Date
GB1075961A true GB1075961A (en) 1967-07-19

Family

ID=9716981

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1146/64A Expired GB1075961A (en) 1964-01-10 1964-01-10 Improvements in or relating to tows of synthetic filaments

Country Status (2)

Country Link
US (1) US3408251A (en)
GB (1) GB1075961A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3846881A (en) * 1972-01-05 1974-11-12 Phillips Petroleum Co Filament crimping

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2385890A (en) * 1943-03-31 1945-10-02 Du Pont Spinning process
US3011215A (en) * 1959-01-29 1961-12-05 Du Pont Process for removing non-uniformities in undrawn synthetic filaments
NL271908A (en) * 1960-11-28

Also Published As

Publication number Publication date
US3408251A (en) 1968-10-29

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