US3581487A - Yarn drawing machine - Google Patents

Yarn drawing machine Download PDF

Info

Publication number
US3581487A
US3581487A US838591A US3581487DA US3581487A US 3581487 A US3581487 A US 3581487A US 838591 A US838591 A US 838591A US 3581487D A US3581487D A US 3581487DA US 3581487 A US3581487 A US 3581487A
Authority
US
United States
Prior art keywords
yarn
roller
separator
drawing machine
flange
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
US838591A
Inventor
William Charles Loomes
Arthur James Marrs
Peter Heffernan
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.)
Akzo Nobel UK PLC
Original Assignee
Courtaulds PLC
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 Courtaulds PLC filed Critical Courtaulds PLC
Application granted granted Critical
Publication of US3581487A publication Critical patent/US3581487A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • D02J1/225—Mechanical characteristics of stretching apparatus
    • 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

  • a yarn drawing machine draws yarn between a alms rawmg feed roller and a draw roller which has an associated separator [52] US. Cl 57/34, ro1ler for spacing the turns of yarn.
  • the separator roller has a 57/77.4 flange of which the peripheral surface frictionally contacts the [51 Int. Cl D02g 1/08, yarn as it passes onto the separator roller initially so as to false 002g 1/04, D01h 7/92 twist the yarn; the twist runs back along the yarn to a region in [50] Field of Search 57/34, 34 which the yarn is heated. The yarn is thereby given a potential crimp which is realized when the yam is relaxed.
  • a draw-twisting machine which is adapted for imparting crimp potential to a yarn is described in British Pat. Specification No. 890,053.
  • the machine described comprises a feed roller and a draw roller with a snubbing pin between them and a yarn heater between the snubbing pin and the draw roller.
  • the draw roller has a flange which frictionally contacts the yarn as it passes onto the draw roller so as to false twist the yarn by virtue of the greater linear speed of the flange compared with that of the circumference of the draw roller.
  • the twist runs back along the yarn as far as the snubbing pin and in effect, the action on the yarn in that part is a drawing of a hot, false-twisted yam. This produces the crimp potential in the yarn, the crimp being realized on subsequent relaxation.
  • the potentially crimpable yarn passes off the draw roller and is then collected on a ring twisting spindle.
  • a yarn drawing machine comprises a feed roller and a draw roller for drawing yarn passing between them, a separator roller associated with the draw roller and for spacing the turns of yarn on the draw roller, the separator roller having a flange with a peripheral surface for frictionally contacting the yarn as it passes initially onto the separator roller so as to false twist the yarn, and means for heating the yarri in the region before it passes to the flange of the separator roller.
  • the separator roller may be driven or idling, in the latter case the yarn frictionally rotating it.
  • One advantage of mounting the flange on the separator roller rather than the draw roller is that, with machine space at a premium, the smaller diameter of the separator roller allows a greater flange to roller diameter ratio with the result that a greater degree of false twist can be inserted into the yarn. Also the direction of the twist, S or Z, can be altered simply bv changing the lace-up of the yarn on the draw and separator rollers between normal lace-up and reverse lace-up.
  • a further advantage is obtained if the separator roller is made idling in that if there is a yarn breakage there is no ensuing yarn tangle around the flange as occurs when the flange is on the draw roller. Thus there is no need to stop the draw roller and no need to cut through a yarn tangle, which action can result in damage to the flange.
  • the flange may be made of a hard rubber material.
  • the contour of its peripheral surface may correspond to the surface of rotation generated by a straight or curved geodesic line connecting the locations at which the yarn makes and breaks contact with the peripheral surface.
  • the feature of a contour generated by a curve geodesic line is described in British Pat. Specification No. 890,053.
  • the yarn heating means may be of any type which is used in this field, for example a hot plate, steam, a high frequency electrical heater or an infrared heater.
  • a snubbing pin may also be incorporated on the machine between the feed roller and the draw roller for determining the length of yarn along which the twist runs back, and this may be heated, for example by electrical resistance wires, so as to heat the yarn.
  • the means for heating the yarn may extend along the yarn path between the snubbing pin and the flange on the separator roller.
  • FIG. 1 is a diagrammatic side elevation of a single station on a draw-twisting machine
  • H6. 2 is a perspective diagram of the draw roller and the separator roller showing the flange and the yarn path, and
  • HO. 3 is a diagrammatic side elevation of the flange on the separator roller and showing the yarn path over the flange.
  • a cheese 1 of nylon yarn 2 is mounted on a headrail 3, the yarn being unwound off the cheese by a centrally mounted guide 4 which is suspended from a guiderail 5.
  • the yarn is drawn off the cheese by a pair of feed rollers 6 and 7 and is then passed by way of a snubbing pin 8 and an electrical heater 9 to draw roller 10 and its separator roller 11.
  • the draw roller it) is rotated at a faster speed than the feed rollers 48 and 7 so that the yarn is stretched between the snubbing pin 8 and the draw roller.
  • the separator roller 11 is also driven, its rate of rotation being such that its peripheral surface moves at the same speed as the draw roller.
  • a hard rubber flange 13 is mounted on the separator roller ll near to one end and rotates with the roller.
  • its peripheral surface 14 has a greater linear speed than that of the separator roller.
  • This peripheral surface 14 is curved, as shown best in FIG. 3, so that yarn passing onto the separator roller at an acute angle to its axis of rotation wraps around the peripheral surface to give a good area of frictional contact.
  • the yarn is false-twisted and the twist runs back along the yarn, through the heater 9 as far as the snubbing pin 8. This combined action of twisting and stretching the yarn whilst heating it gives it a potential crimp which is realized when the yarn is relaxed.
  • the yarn passes down off the draw roller 10, through a balloon guide 15 mounted on a rail 16 and through a traveller (not shown) running around a ring 17, and then onto a bobbin 18.
  • the ring 17 is mounted on a ring rail 19 which is rigidly connected to the balloon guide rail 16 :so that they reciprocate together axially of the rotating bobbin.
  • twistless nylon 6 (Celon) 40/10 multifilament yarn was processed on the apparatus described and shown in the drawings.
  • the linear speed of the feed rollers was I metres per minute and that of the draw roller was 730 metres per minute.
  • the temperature of the heater was I90 C.
  • a separator roller having a diameter of 2.38 cms. and a rubber flange of diameter 5.7 cms., approximately 4 turns per cm. of false twist were inserted into the yarn by the flange.
  • a yarn drawing machine comprising a feed roller and a draw roller for drawing yarn passing between them, a separator roller associated with the draw roller and for spacing the turns of yarn on the draw roller, the separator roller having a flange with a peripheral surface for frictionally contacting the yarn as it passes initially onto the separator roller so as to false twist the yarn, and means for heating the yarn in the region before it passes to the flange of the separator roller.
  • a yarn drawing machine as claimed in claim 4 in which the means for heating the yarn extends along the yarn path between the snubbing pin and the flange on the separator roller.
  • a yarn drawing machine as claimed in claim ll including a mounting for a yarn package off which yarn is to be pulled by the feed roller.
  • a yarn drawing machine comprising a feed roller and a draw roller for drawing yarn passing between them, a separator roller associated with the draw roller and for spacing the turns of yarn on the draw roller, the separator roller having a flange with a peripheral surface for frictionally contacting the yarn as it passes initially onto the separator roller so as to false 84

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

A yarn drawing machine draws yarn between a feed roller and a draw roller which has an associated separator roller for spacing the turns of yarn. The separator roller has a flange of which the peripheral surface frictionally contacts the yarn as it passes onto the separator roller initially so as to false twist the yarn; the twist runs back along the yarn to a region in which the yarn is heated. The yarn is thereby given a potential crimp which is realized when the yarn is relaxed.

Description

O Un1ted States Patent 1 13,s81,487
[72] Inventors William Charles Loomes; [56] References Cited Arthur James Marrs, both of Derby; Peter UNITED STATES PATENTS gfi i gj cumber'and' 2,410,419 1 1/1946 Belezza .1 57/77.4 g 3,094,834 6/1963 Deeley etal. 57/51.6X 1211 Appl No. 838,591
- 3,261,154 7/1966 M1chalek 57/34 [22] F1led July 2, 1969 3,287,888 11/1966 Ch1dgey 57/34X [45] Patented June 1, 1971 3,435,603 4/1969 R1ce 57/34 [73] Ass1gnee Courtaulds Limited 3,457,338 7/1969 Lefevre 57/55.5X England 3 462 938 8/1969 Mehta 57/34 [32] Priority July 16 1968 [33] Great Britain FOREIGN PATENTS [31] 33,769/68 1,098,545 H1968 Great Britain 57/34 Primary Examiner-Donald E. Watkins AttorneyDavis, Hoxie, Faithful] and Hapgood [54] g g S m ABSTRACT: A yarn drawing machine draws yarn between a alms rawmg feed roller and a draw roller which has an associated separator [52] US. Cl 57/34, ro1ler for spacing the turns of yarn. The separator roller has a 57/77.4 flange of which the peripheral surface frictionally contacts the [51 Int. Cl D02g 1/08, yarn as it passes onto the separator roller initially so as to false 002g 1/04, D01h 7/92 twist the yarn; the twist runs back along the yarn to a region in [50] Field of Search 57/34, 34 which the yarn is heated. The yarn is thereby given a potential crimp which is realized when the yam is relaxed.
PATENTED JUN 1 1971 SHEET 1 OF 2 INVENTOR WILLIAM CHARLES LOOMES, ARTHUR JAMES B MARRS ANDPEPER HEFFERNAI Davis, Hoxie, Faithfull & HapgooMTTOR/VE Y PATENIEU Jun 1 [an SHEET 2 BF 2 IN VEN TOR ARTHUR JAMES HEFFERNAN' WILLIAM CHARLES LOOMES, MARRS AND PETER Y BY Davis, 110x10, I-althiull & IIannood lfAlltN DRAWIING MAlCllllllltlE This invention relates to a machine for drawing thermoplastic, continuous filament yarn and is concerned with such a machine which is adapted for imparting crimp potential to the drawn yarn. The term yarn" is to be understood as meaning a monofllament yarn or multifilament yarn with little or no twist, such as, for example, the polyamide or polyester yarns which are commonly fed to a draw-twisting machine.
A draw-twisting machine which is adapted for imparting crimp potential to a yarn is described in British Pat. Specification No. 890,053. Basically the machine described comprises a feed roller and a draw roller with a snubbing pin between them and a yarn heater between the snubbing pin and the draw roller. The draw roller has a flange which frictionally contacts the yarn as it passes onto the draw roller so as to false twist the yarn by virtue of the greater linear speed of the flange compared with that of the circumference of the draw roller. The twist runs back along the yarn as far as the snubbing pin and in effect, the action on the yarn in that part is a drawing of a hot, false-twisted yam. This produces the crimp potential in the yarn, the crimp being realized on subsequent relaxation. The potentially crimpable yarn passes off the draw roller and is then collected on a ring twisting spindle.
We have now made a modification of such a machine which has certain advantages.
According to this invention, a yarn drawing machine comprises a feed roller and a draw roller for drawing yarn passing between them, a separator roller associated with the draw roller and for spacing the turns of yarn on the draw roller, the separator roller having a flange with a peripheral surface for frictionally contacting the yarn as it passes initially onto the separator roller so as to false twist the yarn, and means for heating the yarri in the region before it passes to the flange of the separator roller.
The separator roller may be driven or idling, in the latter case the yarn frictionally rotating it.
One advantage of mounting the flange on the separator roller rather than the draw roller is that, with machine space at a premium, the smaller diameter of the separator roller allows a greater flange to roller diameter ratio with the result that a greater degree of false twist can be inserted into the yarn. Also the direction of the twist, S or Z, can be altered simply bv changing the lace-up of the yarn on the draw and separator rollers between normal lace-up and reverse lace-up.
A further advantage is obtained if the separator roller is made idling in that if there is a yarn breakage there is no ensuing yarn tangle around the flange as occurs when the flange is on the draw roller. Thus there is no need to stop the draw roller and no need to cut through a yarn tangle, which action can result in damage to the flange.
The flange may be made of a hard rubber material. The contour of its peripheral surface may correspond to the surface of rotation generated by a straight or curved geodesic line connecting the locations at which the yarn makes and breaks contact with the peripheral surface. The feature of a contour generated by a curve geodesic line is described in British Pat. Specification No. 890,053.
The yarn heating means may be of any type which is used in this field, for example a hot plate, steam, a high frequency electrical heater or an infrared heater. A snubbing pin may also be incorporated on the machine between the feed roller and the draw roller for determining the length of yarn along which the twist runs back, and this may be heated, for example by electrical resistance wires, so as to heat the yarn. The means for heating the yarn may extend along the yarn path between the snubbing pin and the flange on the separator roller.
Other features which may be included are means for collecting the yarn after it passes off the draw roller, for example a ring twister, and a mounting for a yarn package oft which yarn is to be pulled by the feed roller.
The invention is illustrated by the drawings in which:
FIG. 1 is a diagrammatic side elevation of a single station on a draw-twisting machine,
H6. 2 is a perspective diagram of the draw roller and the separator roller showing the flange and the yarn path, and
HO. 3 is a diagrammatic side elevation of the flange on the separator roller and showing the yarn path over the flange.
Referring to the drawings, a cheese 1 of nylon yarn 2 is mounted on a headrail 3, the yarn being unwound off the cheese by a centrally mounted guide 4 which is suspended from a guiderail 5.
The yarn is drawn off the cheese by a pair of feed rollers 6 and 7 and is then passed by way of a snubbing pin 8 and an electrical heater 9 to draw roller 10 and its separator roller 11. The draw roller it) is rotated at a faster speed than the feed rollers 48 and 7 so that the yarn is stretched between the snubbing pin 8 and the draw roller.
The separator roller 11 is also driven, its rate of rotation being such that its peripheral surface moves at the same speed as the draw roller.
A hard rubber flange 13 is mounted on the separator roller ll near to one end and rotates with the roller. However, because of its greater diameter, its peripheral surface 14 has a greater linear speed than that of the separator roller. This peripheral surface 14 is curved, as shown best in FIG. 3, so that yarn passing onto the separator roller at an acute angle to its axis of rotation wraps around the peripheral surface to give a good area of frictional contact. Because of the greater linear speed of the peripheral surface 14: the yarn is false-twisted and the twist runs back along the yarn, through the heater 9 as far as the snubbing pin 8. This combined action of twisting and stretching the yarn whilst heating it gives it a potential crimp which is realized when the yarn is relaxed.
The yarn passes down off the draw roller 10, through a balloon guide 15 mounted on a rail 16 and through a traveller (not shown) running around a ring 17, and then onto a bobbin 18. The ring 17 is mounted on a ring rail 19 which is rigidly connected to the balloon guide rail 16 :so that they reciprocate together axially of the rotating bobbin.
As an example, twistless nylon 6 (Celon") 40/10 multifilament yarn was processed on the apparatus described and shown in the drawings. The linear speed of the feed rollers was I metres per minute and that of the draw roller was 730 metres per minute. The temperature of the heater was I90 C. With a separator roller having a diameter of 2.38 cms. and a rubber flange of diameter 5.7 cms., approximately 4 turns per cm. of false twist were inserted into the yarn by the flange.
What we claim is:
l. A yarn drawing machine comprising a feed roller and a draw roller for drawing yarn passing between them, a separator roller associated with the draw roller and for spacing the turns of yarn on the draw roller, the separator roller having a flange with a peripheral surface for frictionally contacting the yarn as it passes initially onto the separator roller so as to false twist the yarn, and means for heating the yarn in the region before it passes to the flange of the separator roller.
2. A yam drawing machine as claimed in claim 1 in which the separator roller is an idling roller.
3. A yarn drawing machine as claimed in claim 1 in which the flange on the separator roller is made of hard rubber.
d. A yarn drawing machine as claimed in claim 1, including a snubbing pin located between the feed roller and the draw roller for determining the length of yarn along which the false twist runs back.
5. A yarn drawing machine as claimed in claim 4 in which the means for heating the yarn extends along the yarn path between the snubbing pin and the flange on the separator roller.
ti. A yarn drawing machine as claimed in claim ll including a mounting for a yarn package off which yarn is to be pulled by the feed roller.
7. A yarn drawing machine comprising a feed roller and a draw roller for drawing yarn passing between them, a separator roller associated with the draw roller and for spacing the turns of yarn on the draw roller, the separator roller having a flange with a peripheral surface for frictionally contacting the yarn as it passes initially onto the separator roller so as to false 84 A yarn drawing machine as claimed in claim 7 in which the means for collecting the yarn comprises a ring twister.
Disclaimer 3,581,487.William Charles Loomes and Arthur J ames Mar'rs, Derby, and Peter H efieman, Carlisle, Cumberland, England. YARN DRAXVING MACHINE. Patent dated June 1, 1971. Disclaimer filed Dec. 28, 1971, by the assignee, Uom'taulds Limited. Hereby enters this disclaimer to claims 1 t0 8, inclusive, of said patent.
[Ofiz'cz'al Gazette March 2], 1972.]

Claims (7)

  1. 2. A yarn drawing machine as claimed in claim 1 in which the separator roller is an idling roller.
  2. 3. A yarn drawing machine as claimed in claim 1 in which the flange on the separator roller is made of hard rubber.
  3. 4. A yarn drawing machine as claimed in claim 1, including a snubbing pin located between the feed roller and the draw roller for determining the length of yarn along which the false twist runs back.
  4. 5. A yarn drawing machine as claimed in claim 4 in which the means for heating the yarn extends along the yarn path between the snubbing pin and the flange on the separator roller.
  5. 6. A yarn drawing machine as claimed in claim 1 including a mounting for a yarn package off which yarn is to be pulled by the feed roller.
  6. 7. A yarn drawing machine comprising a feed roller and a draw roller for drawing yarn passing between them, a separator roller associated with the draw roller and for spacing the turns of yarn on the draw roller, the separator roller having a flange with a peripheral surface for frictionally contacting the yarn as it passes initially onto the separator roller so as to false twist the yarn, means for heating the yarn in the region before it passes to the flange of the separator roller, and means for collecting the yarn after it has passed off the draw roller.
  7. 8. A yarn drawing machine as claimed in claim 7 in which the means for collecting the yarn comprises a ring twister.
US838591A 1968-07-16 1969-07-02 Yarn drawing machine Expired - Lifetime US3581487A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3376968 1968-07-16

Publications (1)

Publication Number Publication Date
US3581487A true US3581487A (en) 1971-06-01

Family

ID=10357207

Family Applications (1)

Application Number Title Priority Date Filing Date
US838591A Expired - Lifetime US3581487A (en) 1968-07-16 1969-07-02 Yarn drawing machine

Country Status (4)

Country Link
US (1) US3581487A (en)
FR (1) FR2013047A1 (en)
GB (1) GB1267231A (en)
SE (1) SE342059B (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3774388A (en) * 1969-11-03 1973-11-27 Turbo Machine Co Method for producing synthetic torque yarns
US3777465A (en) * 1969-12-12 1973-12-11 Rhodiaceta Process and apparatus for manufacture of a thermoplastic yarn with residual twist
US3816989A (en) * 1973-08-08 1974-06-18 Akzona Inc Yarn driven friction falsetwister
US3894387A (en) * 1973-07-03 1975-07-15 Bobtex Corp Ltd Composite yarn consolidation device
US3948034A (en) * 1973-04-27 1976-04-06 Imperial Chemical Industries Limited False twisting filamentary yarns
US4000605A (en) * 1971-09-20 1977-01-04 Mitsubishi Rayon Co., Ltd. Method for producing a crimped yarn
US4164838A (en) * 1973-12-06 1979-08-21 Bayer Aktiengesellschaft Process for the production of synthetic endless filaments with good crimping properties
EP4198181A3 (en) * 2021-12-15 2023-07-19 TMT Machinery, Inc. Yarn sending device and false-twist texturing machine

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2410419A (en) * 1943-08-19 1946-11-05 Du Pont Snubber roller
US3094834A (en) * 1959-07-03 1963-06-25 British Nylon Spinners Ltd Apparatus for simultaneously stretching and falsetwisting yarn
US3261154A (en) * 1963-10-21 1966-07-19 Duplan Corp Yarn guiding and feeding means for a false twisting machine
US3287888A (en) * 1963-11-12 1966-11-29 Monsanto Co Apparatus for the treatment of synthetic filaments
GB1098545A (en) * 1965-09-10 1968-01-10 Ici Ltd Low-torque, multifilament compact yarn
US3435603A (en) * 1967-10-30 1969-04-01 American Enka Corp Process and apparatus for producing torque in synthetic filaments,fibers and yarns
US3457338A (en) * 1964-09-21 1969-07-22 Dow Chemical Co Process for crimping polypropylene filaments
US3462938A (en) * 1965-05-10 1969-08-26 Ici Ltd Processes for producing crimped heterofilament yarns

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2410419A (en) * 1943-08-19 1946-11-05 Du Pont Snubber roller
US3094834A (en) * 1959-07-03 1963-06-25 British Nylon Spinners Ltd Apparatus for simultaneously stretching and falsetwisting yarn
US3261154A (en) * 1963-10-21 1966-07-19 Duplan Corp Yarn guiding and feeding means for a false twisting machine
US3287888A (en) * 1963-11-12 1966-11-29 Monsanto Co Apparatus for the treatment of synthetic filaments
US3457338A (en) * 1964-09-21 1969-07-22 Dow Chemical Co Process for crimping polypropylene filaments
US3462938A (en) * 1965-05-10 1969-08-26 Ici Ltd Processes for producing crimped heterofilament yarns
GB1098545A (en) * 1965-09-10 1968-01-10 Ici Ltd Low-torque, multifilament compact yarn
US3435603A (en) * 1967-10-30 1969-04-01 American Enka Corp Process and apparatus for producing torque in synthetic filaments,fibers and yarns

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3774388A (en) * 1969-11-03 1973-11-27 Turbo Machine Co Method for producing synthetic torque yarns
US3777465A (en) * 1969-12-12 1973-12-11 Rhodiaceta Process and apparatus for manufacture of a thermoplastic yarn with residual twist
US4000605A (en) * 1971-09-20 1977-01-04 Mitsubishi Rayon Co., Ltd. Method for producing a crimped yarn
US3948034A (en) * 1973-04-27 1976-04-06 Imperial Chemical Industries Limited False twisting filamentary yarns
US3894387A (en) * 1973-07-03 1975-07-15 Bobtex Corp Ltd Composite yarn consolidation device
US3816989A (en) * 1973-08-08 1974-06-18 Akzona Inc Yarn driven friction falsetwister
US4164838A (en) * 1973-12-06 1979-08-21 Bayer Aktiengesellschaft Process for the production of synthetic endless filaments with good crimping properties
EP4198181A3 (en) * 2021-12-15 2023-07-19 TMT Machinery, Inc. Yarn sending device and false-twist texturing machine

Also Published As

Publication number Publication date
FR2013047A1 (en) 1970-03-27
SE342059B (en) 1972-01-24
GB1267231A (en) 1972-03-15

Similar Documents

Publication Publication Date Title
US2758358A (en) Filament crimping apparatus
US3094834A (en) Apparatus for simultaneously stretching and falsetwisting yarn
US3137119A (en) Process for the production of high bulk yarns
US3091908A (en) Apparatus and method for false twisting yarns
US3327461A (en) Apparatus and method for producing false twist in yarn
US3540204A (en) Method for manufacturing an improved elastic yarn covered with multifilament
US3581487A (en) Yarn drawing machine
US3376698A (en) Production of stretch or bulked textile yarns
US3368335A (en) Apparatus for the treatment of yarns
US2890568A (en) Production of voluminous yarn
US3177556A (en) Drawing and crimping of synthetic filaments and yarns
US3559391A (en) Production of torque yarn
US3263298A (en) Production of intermittently textured yarn
US2979882A (en) Method and apparatus for stretching and twisting continuous filament yarn
US3435603A (en) Process and apparatus for producing torque in synthetic filaments,fibers and yarns
US3910027A (en) Process for the simultaneous stretch texturing of filament yarn
US3237392A (en) Process for producing bulked yarn
US3041706A (en) Apparatus for processing cold-drawable textile filaments
US3474612A (en) Drawing and bulking of synthetic polymer
US3724191A (en) Treatment of synthetic yarns
US3318083A (en) Process for false twist-crimping yarn
US3425206A (en) Dyed intermittently textured yarn
US4081948A (en) Manufacture of bulked yarn
US3025660A (en) Drawtwisting process
US3553952A (en) Process and apparatus for crimping yarns and product made thereby