US2952964A - False twist device for curling thermoplastic yarn - Google Patents

False twist device for curling thermoplastic yarn Download PDF

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Publication number
US2952964A
US2952964A US442166A US44216654A US2952964A US 2952964 A US2952964 A US 2952964A US 442166 A US442166 A US 442166A US 44216654 A US44216654 A US 44216654A US 2952964 A US2952964 A US 2952964A
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US
United States
Prior art keywords
thread
yarn
false
twist
threads
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 - Lifetime
Application number
US442166A
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English (en)
Inventor
Conrad Joseph Gonsalves
Cloux Henri Du
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.)
Akzona Inc
Original Assignee
American Enka Corp
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 American Enka Corp filed Critical American Enka Corp
Application granted granted Critical
Publication of US2952964A publication Critical patent/US2952964A/en
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Classifications

    • 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
    • D02G1/0266—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 false-twisting machines
    • 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
    • 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
    • D02G1/04—Devices for imparting false twist
    • D02G1/06—Spindles

Definitions

  • This invention relates to a method and apparatus for the production of curled yarns or threads from thermoplastic materials and more particularly to a method and apparatus for the continuous production of curled untwisted multi-filament thermoplastic yarns.
  • thermoplastic yarns be false twisted and drawn at a uniform speed successively through -a heating zone and a cooling zone with maintenance of low but uniform tension during heating and cooling whereby no softening or fixing agents are required.
  • Figure l is a schematic view of the entire apparatus employed in imparting curl to thermoplastic yarn according to the present invention.
  • Figure 2 is a view in section to an enlarged scale of the false twisting device employed as a part of the assembly of Figure 1.
  • the numeral 1 indicates the thermoplastic yarn. It is withdrawn from a package 2 over a guide roller 3 and through a thread brake 4 or other friction-imparting device. The propulsion of the thread is accomplished entirely by a triple roller draw-01f device 8 which is shown at the right extremity of Figure 1. After leaving the thread brake 4 the yarn 1 passes through a heating tube 5, a cooling zone 6 and a false twisting device 7.
  • Hot air is supplied to the heating tube through a conduit 9 and this air, being centrally supplied, issues from the ends '10 and 11 of the tube 5.
  • the yarn 1 issuing from the end 11 of the tube 5 passes through a cooling zone 6 during which it is exposed to the cooling Patented Sept. 20, 1960 drag imparting device or thread brake 4 and the point 17a of the false twisting device 7, the yarn 1 is in a twisted condition, while between the point 17a and the draw-01f device 8 the yarn is untwisted.
  • the draw-ofl? device 8 lies on the extended axis of false twisting device 7, and is remote therefrom, as shown in Figure 1.
  • the false twisting device 7 comprises a fixed supporting arm 13 having a sleeve 12 integral therewith. Bearings 15 and 16 support the spindle 17 for rotation within the sleeve 12.
  • the spindle 17, storare wheel 18 and discharge disc or body 19 are integral and are provided with a sheave 14 which overlies the sleeve 12 and which receives a driving belt 20 by which the false twisting device is rotated.
  • Example I A polyamide thread of 60 denier and consisting of 10 filaments was treated. This thread was produced by polymerization of caprolactam and spinning of the molten polyamide.
  • Hot air was fed into the tube 5 which had a length of cm., so that in the tube the temperature was C.
  • the air zone 6 had a length of 100 cm.
  • the speed of the false twisting device was 20,000 rpm.
  • the triple roller device took off the thread at a speed of 5.6 in per minute.
  • the thread brake 4 was so adjusted that the tension of the thread 1 before the hollow spindle 17 of the twisting device amounted to 2.5 g.
  • Example 11 a denier of 50 and consisted of 10 filaments.
  • the heating tube had a length of 250 cm, while the temperature in the tube amounted to C.
  • a blower was placed, which was provided with a slot from which atmospheric air was blown from below against the passing thread.
  • the speed of the twisting device amounted to 50,000 rpm. and the triple roller device made the thread travel at a speed of 12.5 in. per minute, the thread tension before the twisting device being adjusted at 5 g.
  • thermoplastic threads from synthetic polymerization and polycondensation products including also polyethlene, polyacrylonitrile, polyamide, polyesters or corresponding copolymers.
  • the path of the cooling zone 6 is quite long, it being necessary that the cooling take place before the twist is relieved.
  • the length of the cooling zone 6 can be somewhat reducedif cool air is supplied, or if the air is circulated as by a fan or the like. It has been found, however,- that a free air path without forced circulation is entirely satisfactory if it is long enough.
  • thread brake 4 is employed immediately ahead of the heating zone.
  • a thread brake one preferably uses a disc brake or pressure shoe brake which increases the tension additively according to the formula
  • P represents the tension in the thread leaving the tensioning device. 7 the thread before it has been tensioned in the thread brake.
  • n is the coefiicient of friction and N, of course, is the load of the brake.
  • the supply device be one which 'does not impose too much tension on the thread and to draw overhead from a cone-type package as illustrated in Figure 1 is satis factory.
  • the twisting device is preferably a triple roller with a detachable upper roller in order to facilitate threading 1n.
  • the confined space for heating the thread may be made suitable for treating arientire sheet of threads lying m.one plane and being twisted, the threads being conducted transversely'through the said confined space V ture of the air but also'on the nature of the thread, the
  • the thread produced according to the present inventron shows a stable twist curling under atmospheric influences. Due to the tendency to enclose air pockets itis possible to produce fabrics therefrom which have good insulating properties. Tl1'e threads are extraordinarily P equals the tension of elastic so that they can be stretched out to four times their length. This elasticity manifests itself also in knit and woven fabrics made from these threads. It is also 7 possible to give these fabrics a thermal af-tertreatment belt or rope drive so thatrone may obtain with the whole device rather high drawing 01f speeds and consequently 7 high capacity. The thread conveyor device placed after without unfavorably affecting them provided the temperature of this aftertreatment does not exceed the temperature used when fixing the twist.
  • thermoplastic yarn curling apparatus including a false twist device 'for imparting temporary twist to yarn passing therethrough and a heater for setting the false twist in the temporarily twisted yarn
  • the false twist'device which comprises a rotatable spindle, a cylindricalyarn storage wheel formed integral with said'rotatablespindle, a'discharge disk formed integral with said yarn storage wheel, means defining a longitudinal yarn passageway in said rotatable spindle, means defining a connecting passageway between the outer surface of said yarn storage wheel and said longitudinal passageway, meansfor imparting rotation to said spindle'and to yarn passing therethrough, and means remote from said discharge disk and lying on the extendedaxis of said' rotatable spindle for withdrawing thermoplastic yarn throughsaidlongitudinal passageway, through said connectingpassageway, at least partially around said yarn storage wheel, over said discharge dish and laterally outwardly away from said rotatable spindle, said yarn ballooning between said yarn storage wheel and

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
US442166A 1953-07-14 1954-07-08 False twist device for curling thermoplastic yarn Expired - Lifetime US2952964A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL2952964X 1953-07-14

Publications (1)

Publication Number Publication Date
US2952964A true US2952964A (en) 1960-09-20

Family

ID=19876465

Family Applications (1)

Application Number Title Priority Date Filing Date
US442166A Expired - Lifetime US2952964A (en) 1953-07-14 1954-07-08 False twist device for curling thermoplastic yarn

Country Status (8)

Country Link
US (1) US2952964A (de)
AT (1) AT190431B (de)
BE (1) BE529677A (de)
CH (1) CH326115A (de)
DE (1) DE1114003B (de)
ES (2) ES216438A1 (de)
FR (1) FR1110780A (de)
GB (1) GB750761A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3034277A (en) * 1956-09-19 1962-05-15 Richter Hans Device for crimping synthetic filaments
US3035397A (en) * 1957-01-07 1962-05-22 Hindley Brothers Ltd Belt false twisting apparatus for crimping of textile yarns
US3154906A (en) * 1959-12-01 1964-11-03 Onderzoekings Inst Res Apparatus for false-twisting thermoplastic yarn
US3396523A (en) * 1965-02-27 1968-08-13 Scragg & Sons Apparatus for twisting yarn
US3404525A (en) * 1965-09-10 1968-10-08 Ici Ltd Low-torque multifilament compact yarn

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL229890A (de) * 1957-07-26
GB857967A (en) * 1958-07-16 1961-01-04 Scragg & Sons Improved process and apparatus for crimping textile yarns
IT1262043B (it) * 1993-03-19 1996-06-18 Dispositivo perfezionato per lo stiro con falsa torsione di uno stoppino destinato alla filatura.
CN108584554B (zh) * 2018-06-05 2024-09-27 东莞市庆丰电工机械有限公司 一种加热式收线机

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191310327A (en) * 1913-05-02 1914-04-30 Ernest Richard Royston Improvements in or connected with Spinning Wool, Cotton, and other Fibres, or Fibrous Material.
US1126042A (en) * 1912-11-08 1915-01-26 Charles Lister Spinning cotton and other fibers or fibrous material.
US2111211A (en) * 1935-10-25 1938-03-15 Celanese Corp Apparatus for the treatment of textile materials
US2111209A (en) * 1935-06-22 1938-03-15 Dreyfus Henry Treatment of textile yarns
US2244832A (en) * 1937-12-04 1941-06-10 Celanese Corp Production of textile threads
US2463620A (en) * 1946-01-21 1949-03-08 Heberlein Patent Corp Apparatus and process for crimping
DE836762C (de) * 1949-08-05 1952-04-17 Franz Seifert Ringspinn- bzw. Ringzwirnmaschine
US2732681A (en) * 1954-06-01 1956-01-31 klein
US2830431A (en) * 1954-03-22 1958-04-15 Deering Milliken Res Corp Strand twisting machine
US2863280A (en) * 1952-05-23 1958-12-09 Ubbelohde Leo Method of crimping filaments

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE264625C (de) *
GB464981A (en) * 1935-10-25 1937-04-26 British Celanese Improved process and apparatus for imparting false twist to textile threads
CH233148A (de) * 1942-01-06 1944-07-15 Bemberg Ag Einrichtung zur Herstellung wollähnlicher Kunstfäden.

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1126042A (en) * 1912-11-08 1915-01-26 Charles Lister Spinning cotton and other fibers or fibrous material.
GB191310327A (en) * 1913-05-02 1914-04-30 Ernest Richard Royston Improvements in or connected with Spinning Wool, Cotton, and other Fibres, or Fibrous Material.
US2111209A (en) * 1935-06-22 1938-03-15 Dreyfus Henry Treatment of textile yarns
US2111211A (en) * 1935-10-25 1938-03-15 Celanese Corp Apparatus for the treatment of textile materials
US2244832A (en) * 1937-12-04 1941-06-10 Celanese Corp Production of textile threads
US2463620A (en) * 1946-01-21 1949-03-08 Heberlein Patent Corp Apparatus and process for crimping
DE836762C (de) * 1949-08-05 1952-04-17 Franz Seifert Ringspinn- bzw. Ringzwirnmaschine
US2863280A (en) * 1952-05-23 1958-12-09 Ubbelohde Leo Method of crimping filaments
US2830431A (en) * 1954-03-22 1958-04-15 Deering Milliken Res Corp Strand twisting machine
US2732681A (en) * 1954-06-01 1956-01-31 klein

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3034277A (en) * 1956-09-19 1962-05-15 Richter Hans Device for crimping synthetic filaments
US3035397A (en) * 1957-01-07 1962-05-22 Hindley Brothers Ltd Belt false twisting apparatus for crimping of textile yarns
US3154906A (en) * 1959-12-01 1964-11-03 Onderzoekings Inst Res Apparatus for false-twisting thermoplastic yarn
US3396523A (en) * 1965-02-27 1968-08-13 Scragg & Sons Apparatus for twisting yarn
US3404525A (en) * 1965-09-10 1968-10-08 Ici Ltd Low-torque multifilament compact yarn

Also Published As

Publication number Publication date
GB750761A (en) 1956-06-20
FR1110780A (fr) 1956-02-16
BE529677A (nl) 1957-07-05
AT190431B (de) 1957-06-25
ES216438A1 (es) 1955-12-16
DE1114003B (de) 1961-09-21
CH326115A (de) 1957-12-15
ES216524A1 (es) 1955-12-16

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