US3910027A - Process for the simultaneous stretch texturing of filament yarn - Google Patents

Process for the simultaneous stretch texturing of filament yarn Download PDF

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Publication number
US3910027A
US3910027A US421984A US42198473A US3910027A US 3910027 A US3910027 A US 3910027A US 421984 A US421984 A US 421984A US 42198473 A US42198473 A US 42198473A US 3910027 A US3910027 A US 3910027A
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Prior art keywords
yarn
heating zone
dtex
roller
heating
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Expired - Lifetime
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US421984A
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English (en)
Inventor
Hans Bach
Udo Hansel
Karl-August Heinroth
Hans-Dieter Jurischka
Rudolf Jurgen Klee
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Bayer AG
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Bayer AG
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    • 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

Definitions

  • ABSTRACT A process for the production of a textured endless yarn by the simultaneous false twisting and stretch texturing of an unstretched or incompletely stretched yarn of a high molecular weight, fibre-forming linear polymer, using at least two heating zones separated from each other in space between the delivery cylinder and the draw-off roller, in which process the yarn is delivered from the delivery cylinder to a first heating zone, heated in this heating zone without substantial mechanical stress at a low yarn tension to a yarn temperature above the glass temperature and thereafter, at a higher yarn tension built up between the first and second heating zone or in the first heating zone, it is stretched and simultaneously friction false-twisted and heat fixed between the delivery cylinder and the draw-off roller at a yarn temperature of below 160C.
  • This invention relates to a process for the production of a textured filament yarn by simultaneous false twisting and stretching an unstretched or incompletely stretched thread of a high molecular weight, linear, fibre-forming polymer, in particular a polyester, in which the amorphous threads are first heated to temperatures above the glass temperature without substantial mechanical stress before the usual twist fixing is carried out.
  • Consecutive stretching and texturing machines are also known, in which the yarn is first stretched between two rollers in the usual manner and then textured in a separate zone between a stretching roller and another roller with a twisting device and a twist fixing device between them.
  • Another process is characterised in that an unstretched polyester filament yarn is first stretched in a ratio of between 1 1.20 and l 3.80 in a heating zone between the delivery rollers at temperatures of 90 to 170C and then cooled and then restretched and, at the same time, fixed in a second heating zone at temperatures of 160 to 230C so that the total stretching ratio is in the range of 1 :2.5 to 1 4.5.
  • This invention therefore relates to a process for the production of a textured filament yarn by the simultaneous false twisting and stretch texturing of unstretched or incompletely stretched threads of high molecular weight, fibre-forming, linear polymers, in particular polyesters, using at least two heating zones separated from each other in space between delivery cylinder and draw-off roller, in which process the threads are delivered from the delivery cylinder to a first heating zone at a texturing velocity of 200 to 600 metres per minute, are heated in this heating zone to a temperature between T glass temperature and T 50C while substantially free from mechanical stress and at thread tensions of less than 0.05 p/dtex, and then, while under tensions of 0.1 to 0.5 p/dtex which are built up between the first and second heating zone or already in the first heating zone, they are stretched in the ratio of between 1 1.5 and l 4.5 and simultaneously subjected to friction false-twisting and heat fixing at thread temperatures above 160C between the delivery cylinder and the draw-off roller.
  • FIG. 1 represents the process in its most generalised form.
  • the unstretched or incompletely stretched yarn from spool 1 is delivered to a first heating zone 5 by way of a deflecting roller 2, yarn brakes 3 and delivery cylinders 4.
  • heating zone 5 the yarn is heated to a temperature between T glass temperature and T 50C without any substantial mechanical stress and at yarn tensions of less than 0.05 p/dtex.
  • This can be achieved by using, as the first heating zone, either a heated roller 12 (see FIG. 2) or a contact heating element 13 (see FIG. 3) or a hot pin 14 (see FIG. 4). In this case, it is important that the yarn should be passed over a stretch ing pin 15 (see FIGS. 2, 3 and 4) between the first and second heating zone.
  • the friction between the yarn and the stretching pin keeps the yarn tension in the first heating zone sufficiently low to ensure that the yarn will be heated up in this first zone without substantial mechanical stress.
  • the stretching pin may be arranged anywhere between the heating zones 5 and 6 which are separated from each other by a distance of 0.2 to l m. The position of the pin is determined, among other things, by the titre of the ,yam. After passing over the stretching pin, the yarn has a tension of 0.1 to 0.5 p/dtex, preferably 0.3 to 0.4 p/dtex.
  • no stretching pin is used.
  • the yarn is in this case passed over a hot pin 14 (FIG. 5) with a looping angle of at least 270, preferably at least 720 before it enters the heating and fixing zone 6.
  • a hot pin 14 FIG. 5
  • the yarn By looping the yarn over the hot pin with a looping angle of at least 270, it becomes heated to a temperature above or equal to its glass temperature substantially without any mechanical stress and at tension of less than 0.05 p/dtex.
  • the increasing friction due to the multiple looping of the yarn round the hot pin builds up the yarn tension so that the yarn leaves the hot pin at the desired tension of 0.1 to 0.5 p/dtex, preferably 0.3 to 0.4 p/dtex before entering the second heating zone.
  • the second heating zone 6 serves as heating and fixing zone in which the false twist 8 is fixed.
  • the heating and fixing zone is followed by a sufficiently long cooling zone 7 in which the yarn is cooled to a temperature close to the glass temperature before entering the twisting zone.
  • cooling in this zone is preferably positive (e.g. by means of conduction cooling devices).
  • the yarn After passing over the false twisting device, the yarn is looped several times round a roller 9, if necessary to receive a thermal after-treatment after passing through -an additional heating zone (conduction heating or convection heating), and from there it reaches a dressing apparatus 10. The yarn is then wound on a winding device 11.
  • a thermal after-treatment after passing through -an additional heating zone (conduction heating or convection heating)
  • a dressing apparatus 10 After passing over the false twisting device, the yarn is looped several times round a roller 9, if necessary to receive a thermal after-treatment after passing through -an additional heating zone (conduction heating or convection heating), and from there it reaches a dressing apparatus 10.
  • the yarn is then wound on a winding device 11.
  • the total stretch measured between the delivery cylinder 4 and the draw-off roller 9 is between 1 1.5 and l: 4.5.
  • the process according to the invention is suitable for the texturing of fibre-forming polyamides and polyesters.
  • the polyester filaments used are produced from high molecular weight linear polyester, in particular by the melt spinning process. Products of terephthalic acid and ethylene glycol or cyclohexane-1,4-dimethanol or mixtures of ethylene glycol and cyclohexanel ,4- dimethanol are particularly suitable.
  • polyamides polycaprolactam and polyhexamethylene adipamide are also particularly suitable for the process.
  • EXAMPLE 1 A polyester yarn with a titre before treatment of 290 dtex and composed of 17 individual filaments was conveyed to the delivery cylinder 4 over a deflecting device 2 and yarn brake 3 and then looped practically tension-free with a looping angle of 360C over a hot pin 14 with a diameter of 70 mm which is heated to l 15C (see FIGS. 1 and 4). The yarn was then passed over a stretching pin 15 and stretched in the ratio of l 3.76 between the delivery cylinder 4 and roller 9, the stretching pin serving to fix the stretching point. The twist was then produced by means of an internal friction false-twist 8 the surface velocity of which was 3- times the texturing velocity of the yarn, which was 400 metres per minute.
  • the twist yarn bundle was then fixed on a conduction heating element 6 which was at a temperature of 200C.
  • the yarn which had now been textured was then set by partly returning it over the heating and fixing element (contact length 18 cm).
  • a rinsing oil was then applied and the yarn is wound.
  • the final titre was 78 f 17 dtex.
  • the yarn had a crimp 1) of 26 percent and a crimp stability KB of 62 percent.
  • the tensile strength was 38 Rkm and the elongation 25 percent.
  • the irreversible shrinkage was less than 3 percent.
  • EXAMPLE 2 A polyester yarn with a teatment of 320 dtex and composed of 26 individual filaments was simultaneously stretched and textured as in example I but stretching was to a ratio of l 4.11.
  • the temperature of the hot pin 14 was 125C and the looping angle was 720.
  • the conduction heating element 6 was adjusted to a temperature of 220 and the draw-off rate to 600 metres per minute.
  • the speed of rotation of the twist 8 was 20,000 revs per min.
  • the yarn was adjusted to a relaxation of 8 percent.
  • the final titre was 78 f 26 dtex.
  • a polyester thread with a titre before treatment of 650 dtex and composed of 34 individual filaments was simultaneously stretched and textured as in examples 1 and 2.
  • the temperature of the heated roller 12 was adjusted to C and the yarn was looped round seven times.
  • a stretching pin 15 round which the yarn was looped once was arranged at a distance of 2 cm.
  • the stretching ratio was 1 3.76.
  • the conduction heating element 6 had a length of l m and was contacted twice by the thread by reversal of direction; its temperature was 220C. The draw-off rate was 300 metres per minute. The twister 8 rotated at 14,000 revs per min. The thermal after-treatment was carried out in a second convection heating device 1.5 m in length at a temperature of C. Relaxation of the textured yarn was adjusted to 12 percent.
  • the cooling zone 7 was 60 cm in length and comprised a conduction cooling element with a surface temperature of 30C. The final titre was 167 f 34 dtex EK 26 percent, KB l p/dtex 65 percent, Tensile strength 37,0 Rkm, Elongation 27 Shrinkage l We claim:
  • the first heating zone comprises a material selected from the group consisting of a hot pin, a heatable roller and a conduction heating element.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
US421984A 1972-12-05 1973-12-05 Process for the simultaneous stretch texturing of filament yarn Expired - Lifetime US3910027A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2259434A DE2259434A1 (de) 1972-12-05 1972-12-05 Verfahren zur simultanstrecktexturierung von endlosgarnen

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US3910027A true US3910027A (en) 1975-10-07

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US (1) US3910027A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS4986622A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AT (1) AT334509B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BE (1) BE808222A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA995991A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CH (1) CH557433A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DD (1) DD111942A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2259434A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ES (1) ES421139A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2208999B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1424259A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
IE (1) IE38606B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
IT (1) IT1002189B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
LU (1) LU68920A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NL (1) NL7316523A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3977175A (en) * 1973-12-13 1976-08-31 Teijin Limited Draw-texturing polyester yarns
US4028875A (en) * 1975-03-13 1977-06-14 Monsanto Company False-twist texturing process
US4120141A (en) * 1976-08-02 1978-10-17 The State Of Israel Ministry Of Commerce And Industry Process and apparatus for the production of textured polyester yarn
US4398386A (en) * 1980-04-23 1983-08-16 Toray Industries, Inc. Process and apparatus for simultaneously drawing and false-twisting thermoplastic synthetic yarn
US4487011A (en) * 1981-04-18 1984-12-11 Hoechst Aktiengesellschaft Process for making a texturized profile yarn, and the resulting yarns
US4534164A (en) * 1982-03-16 1985-08-13 Teijin Limited Textured yarn and method and apparatus for producing the same
US4539805A (en) * 1982-02-19 1985-09-10 Asahi Kasei Kogyo Kabushiki Kaisha Process and apparatus for producing easily dyeable polyester false-twisted yarns
US5471828A (en) * 1993-05-04 1995-12-05 Wellman, Inc. Hot feed draw texturing for dark dyeing polyester
RU2209729C1 (ru) * 2001-12-21 2003-08-10 Открытое акционерное общество "ВАТИ" Способ изготовления фрикционного изделия
FR2857985A1 (fr) * 2003-07-22 2005-01-28 Rieter Icbt Machine pour le cablage / torsion et la fixation en continu de fils
US20050022492A1 (en) * 2002-01-31 2005-02-03 Rieter Textile Machinery France Device for the continuous cabling and setting of yarns followed by additional heat treatment

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3380700D1 (en) * 1982-02-19 1989-11-16 Asahi Chemical Ind Process and apparatus for producing easily dyeable polyester false-twisted yarns
CH673561A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1986-11-25 1990-03-30 Opti Patent Forschung Fab

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3001355A (en) * 1959-06-08 1961-09-26 Deering Milliken Res Corp Method and apparatus for processing yarn
US3270492A (en) * 1961-08-23 1966-09-06 Hosiery And Allied Trade Res A Production of yarns
US3289400A (en) * 1964-09-21 1966-12-06 Ernest Scragg & Sons Holdings Apparatus for producing modified twist crimped yarn
US3462938A (en) * 1965-05-10 1969-08-26 Ici Ltd Processes for producing crimped heterofilament yarns
US3650103A (en) * 1969-11-10 1972-03-21 Uniroyal Inc Process and apparatus for texturizing yarn
US3651633A (en) * 1970-10-27 1972-03-28 Fiber Industries Inc Flange false twist textured nylon
US3685276A (en) * 1969-08-07 1972-08-22 Bayer Ag Process for the production of moderately elastic crimp yarns
US3724191A (en) * 1969-12-16 1973-04-03 Tmm Research Ltd Treatment of synthetic yarns
US3796036A (en) * 1970-11-21 1974-03-12 Scragg & Sons Method of processing yarn

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3001355A (en) * 1959-06-08 1961-09-26 Deering Milliken Res Corp Method and apparatus for processing yarn
US3270492A (en) * 1961-08-23 1966-09-06 Hosiery And Allied Trade Res A Production of yarns
US3289400A (en) * 1964-09-21 1966-12-06 Ernest Scragg & Sons Holdings Apparatus for producing modified twist crimped yarn
US3462938A (en) * 1965-05-10 1969-08-26 Ici Ltd Processes for producing crimped heterofilament yarns
US3685276A (en) * 1969-08-07 1972-08-22 Bayer Ag Process for the production of moderately elastic crimp yarns
US3650103A (en) * 1969-11-10 1972-03-21 Uniroyal Inc Process and apparatus for texturizing yarn
US3724191A (en) * 1969-12-16 1973-04-03 Tmm Research Ltd Treatment of synthetic yarns
US3651633A (en) * 1970-10-27 1972-03-28 Fiber Industries Inc Flange false twist textured nylon
US3796036A (en) * 1970-11-21 1974-03-12 Scragg & Sons Method of processing yarn

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3977175A (en) * 1973-12-13 1976-08-31 Teijin Limited Draw-texturing polyester yarns
US4028875A (en) * 1975-03-13 1977-06-14 Monsanto Company False-twist texturing process
US4120141A (en) * 1976-08-02 1978-10-17 The State Of Israel Ministry Of Commerce And Industry Process and apparatus for the production of textured polyester yarn
US4398386A (en) * 1980-04-23 1983-08-16 Toray Industries, Inc. Process and apparatus for simultaneously drawing and false-twisting thermoplastic synthetic yarn
US4487011A (en) * 1981-04-18 1984-12-11 Hoechst Aktiengesellschaft Process for making a texturized profile yarn, and the resulting yarns
US4539805A (en) * 1982-02-19 1985-09-10 Asahi Kasei Kogyo Kabushiki Kaisha Process and apparatus for producing easily dyeable polyester false-twisted yarns
US4534164A (en) * 1982-03-16 1985-08-13 Teijin Limited Textured yarn and method and apparatus for producing the same
US5471828A (en) * 1993-05-04 1995-12-05 Wellman, Inc. Hot feed draw texturing for dark dyeing polyester
US5644906A (en) * 1993-05-04 1997-07-08 Wellman, Inc. Hot feed draw texturing for dark dyeing polyester
RU2209729C1 (ru) * 2001-12-21 2003-08-10 Открытое акционерное общество "ВАТИ" Способ изготовления фрикционного изделия
US20050022492A1 (en) * 2002-01-31 2005-02-03 Rieter Textile Machinery France Device for the continuous cabling and setting of yarns followed by additional heat treatment
US6986242B2 (en) 2002-01-31 2006-01-17 Rieter Textile Machinery France Device for the continuous cabling and setting of yarns followed by additional heat treatment
FR2857985A1 (fr) * 2003-07-22 2005-01-28 Rieter Icbt Machine pour le cablage / torsion et la fixation en continu de fils
WO2005010251A3 (fr) * 2003-07-22 2005-03-24 Rieter Textile Machinery Fr Machine pour le cablage / torsion et la fixation en continu de fils

Also Published As

Publication number Publication date
IE38606B1 (en) 1978-04-26
ATA1009473A (de) 1976-05-15
IE38606L (en) 1974-06-05
CH557433A (de) 1974-12-31
ES421139A1 (es) 1976-04-16
DD111942A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1975-03-12
CA995991A (en) 1976-08-31
FR2208999A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1974-06-28
GB1424259A (en) 1976-02-11
AT334509B (de) 1976-01-25
NL7316523A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1974-06-07
FR2208999B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1977-09-30
BE808222A (fr) 1974-06-05
IT1002189B (it) 1976-05-20
JPS4986622A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1974-08-20
DE2259434A1 (de) 1974-06-06
LU68920A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1974-02-11

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