GB865897A - A process for the hot-stretching of yarns made from synthetic linear polymers - Google Patents

A process for the hot-stretching of yarns made from synthetic linear polymers

Info

Publication number
GB865897A
GB865897A GB22840/58A GB2284058A GB865897A GB 865897 A GB865897 A GB 865897A GB 22840/58 A GB22840/58 A GB 22840/58A GB 2284058 A GB2284058 A GB 2284058A GB 865897 A GB865897 A GB 865897A
Authority
GB
United Kingdom
Prior art keywords
yarn
stretching
polyacrylonitrile
linear polymers
yarns
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
GB22840/58A
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.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Publication of GB865897A publication Critical patent/GB865897A/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
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/0206—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting
    • D02G1/022—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by false-twisting while simultaneously drawing the yarn

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Abstract

A process for the production of potentially smooth and even yarns made from synthetic linear polymers, e.g. polyamides, polyesters, polyethylene and polyacrylonitrile, comprises hot-stretching the yarn, imparting to it during stretching such a low false twist that permanent crimping is avoided, there being no setting of the false twist, and withdrawing the yarn. The process is said to be especially adapted for hotstretching polyacrylonitrile yarns containing at least 85% of acrylonitrile, by weight, and from 5 to 8% of residual solvent, dimethylformamide, at temperatures of from 145 DEG to 170 DEG C. In an example, with the false twist device running at 10,000 r.p.m. and a yarn speed at feed and delivery of 130 and 850 metres p.m. respectively, the twist in the polyacrylonitrile yarn was about 80 and 12 yarns p. metre respectively, the drawing temperature being 150 DEG C.
GB22840/58A 1957-07-26 1958-07-16 A process for the hot-stretching of yarns made from synthetic linear polymers Expired GB865897A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF0023601 1957-07-26

Publications (1)

Publication Number Publication Date
GB865897A true GB865897A (en) 1961-04-19

Family

ID=7090910

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22840/58A Expired GB865897A (en) 1957-07-26 1958-07-16 A process for the hot-stretching of yarns made from synthetic linear polymers

Country Status (5)

Country Link
US (1) US3018609A (en)
DE (1) DE1410396A1 (en)
FR (1) FR1200549A (en)
GB (1) GB865897A (en)
NL (1) NL229890A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2188338A (en) * 1986-03-25 1987-09-30 Carding Spec Co Modifying a yarn

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3292354A (en) * 1965-04-20 1966-12-20 Leesona Corp Apparatus for processing yarn
GB1119551A (en) * 1965-05-10 1968-07-10 Ici Ltd Improvements in or relating to processes for producing crimped heterofilament yarns
US3376698A (en) * 1965-08-02 1968-04-09 Tmm Research Ltd Production of stretch or bulked textile yarns
US3774388A (en) * 1969-11-03 1973-11-27 Turbo Machine Co Method for producing synthetic torque yarns
NL7007250A (en) * 1970-03-18 1971-09-21
US3708970A (en) * 1971-01-29 1973-01-09 Fiber Industries Inc Yarn process
DE2935110A1 (en) * 1979-08-30 1981-03-19 Vepa AG, 4125 Riehen, Basel Preventing agglomeration of filaments on cylinder - during running of two by applying alternating varied false twist

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2332489A (en) * 1941-04-12 1943-10-19 Dow Chemical Co Fabrication of crystalline polymers
US2332485A (en) * 1941-09-02 1943-10-19 Dow Chemical Co Vinylidene chloride fibers
BE465536A (en) * 1942-11-03
US2440226A (en) * 1943-08-19 1948-04-20 Du Pont Method and apparatus for producing and stretching artificial yarn
GB750761A (en) * 1953-07-14 1956-06-20 Onderzoekings Inst Res Improved process and apparatus for the continuous production of curled elastic threads and yarns from thermoplastic threads

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2188338A (en) * 1986-03-25 1987-09-30 Carding Spec Co Modifying a yarn
GB2188338B (en) * 1986-03-25 1989-11-22 Carding Spec Co Method and apparatus for modifying a yarn

Also Published As

Publication number Publication date
FR1200549A (en) 1959-12-22
NL229890A (en)
DE1410396A1 (en) 1968-10-17
US3018609A (en) 1962-01-30

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