EP1645668A1 - Garnheizer und Verwendung eines Garnheizers - Google Patents

Garnheizer und Verwendung eines Garnheizers Download PDF

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Publication number
EP1645668A1
EP1645668A1 EP04024030A EP04024030A EP1645668A1 EP 1645668 A1 EP1645668 A1 EP 1645668A1 EP 04024030 A EP04024030 A EP 04024030A EP 04024030 A EP04024030 A EP 04024030A EP 1645668 A1 EP1645668 A1 EP 1645668A1
Authority
EP
European Patent Office
Prior art keywords
yarn
heater
heating
guides
feedthrough
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.)
Withdrawn
Application number
EP04024030A
Other languages
German (de)
English (en)
French (fr)
Inventor
Klaus Dr. Meier
Roland Reiber
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.)
SSM Schaerer Schweiter Mettler AG
Original Assignee
SSM Schaerer Schweiter Mettler 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 SSM Schaerer Schweiter Mettler AG filed Critical SSM Schaerer Schweiter Mettler AG
Priority to EP04024030A priority Critical patent/EP1645668A1/de
Priority to JP2005294593A priority patent/JP2006104654A/ja
Priority to TW094135204A priority patent/TW200628646A/zh
Priority to KR1020050094369A priority patent/KR20060052113A/ko
Priority to CN 200510129174 priority patent/CN1772987A/zh
Publication of EP1645668A1 publication Critical patent/EP1645668A1/de
Withdrawn legal-status Critical Current

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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
    • D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
    • 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

Definitions

  • the invention relates to a device for heat treatment of a synthetic yarn (yarn heater) having a heating zone having a Garn take entry arranged at the Garn die Replacement heating walls, heating means, which are adapted to heat the Schuwandept and arranged in the Garri coach entry yarn guides and uses such a yarn heater.
  • Yarn headers are used in particular in false-twist texturing machines.
  • Texturing especially false-twist texturing, of filament yarns, especially multifilament yarns
  • the purpose of texturing is to produce from a plastic-like, flat and smooth multifilament yarn a curled and structured yarn which, due to its voluminous and bulky structure (Bausch), has a textile character.
  • the multifilament yarn is generally unwound from a bobbin, passed through a first delivery mechanism, then heated in a yarn heater (primary heater), cooled on a cooling rail, passed through a swirl transmitter and a second delivery mechanism arranged behind it, a so-called trigger delivery unit, and then to a Garnspule to be wound up.
  • the swirl transmitter serves to temporarily turn up the multifilament yarn in one operation, i.
  • This temporary twisting (twisted state) is called false-twisted wire (FD).
  • the twisting forms a spinlock which extends back into the yarn heater (swirl zone), thereby allowing the twisted state of the filament yarns in front of the swirl donor by heating the yarn to a temperature at which the yarn is plastically deformable and thereupon the following cooling is thermally fixed. Behind the twist donor, the twist is then resolved again. Due to the thermal fixation in the twisted state, the yarn has the desired crimped structure.
  • This swirl slip leads to a rotation deficit within the swirl zone, ie the twist density, ie the number of twists per unit length of the filament yarns fluctuates.
  • the yarn to be processed can thereby pass in sections without twisting the twister. This leads to short closed yarn sections, so-called “tight spots” and long unevenly textured yarn sections, which is referred to as "Surging".
  • the thread tension increases abruptly, which disturbs the balance of forces in the swirl generator. Zones are created in the thread without rotation. Besides, stretching values fluctuate, staining becomes insufficient.
  • the stability limit of the process is influenced on the one hand by the geometry of the texturing zone, eg its length, deflection points, thread support, etc., and on the other hand by the quality of the original material, eg its uniformity, preparation etc., ie by occurring process fluctuations.
  • this stability limit is also determined by the geometry of the yarn heater. If, for example, the described disturbances occur, then a fluctuation in the temperature to which the yarn is heated in a yarn heater can occur. For example, this may cause the yarn to be heated above its melting temperature, causing a yarn break. The latter leads to an interruption of the production process.
  • a yarn heater for solving these problems has been known, for example, from EP 0 579 866 A1. This yarn heater has two heating zones through which a yarn feedthrough passes. At the Garn trim operation walls, which are heated by heating means arranged. In the yarn feedthrough yarn guides are each arranged at a distance of a few centimeters.
  • the total length of the heating zones is 0.8 to 1.2 meters, followed by a treatment time of 0.04 to 0.12 seconds from the yarn heater passing yarn sections.
  • the yarn passing through the yarn heater is guided at a distance from the heating walls.
  • the yarn guides are arranged such that a yarn path defined by the yarn guides in the yarn heater has an arc shape in a plane.
  • This yarn heater is optimized for heating polyester yarns during false twisting. Due to the bow shape of the threadline, the occurrence of ballooning in the yarn heater can be largely avoided in polyester yarns. Further, the heating walls are maintained at an operating temperature at which yarn sections remaining in the yarn heater are burned or vaporized in the event of yarn breakage, thereby enabling a rapid restart of a false-twist texturing machine with such a yarn heater.
  • this yarn heater avoids the problems described in polyamide yarns, which are usually finer than polyester yarns.
  • the operating temperature of the known heaters due to the fineness of these yarns, must be lowered to a temperature range of 300 to 350 ° C.
  • this temperature range In this temperature range, however, polymer residues that are produced by abrasion or yarn breakage in the yarn heater are no longer burned. Rather, these residues are melted and remain in a viscous "honey-like" state in the heater. If these residues are on thread-guiding parts in the yarn heater, this leads to a loss of quality, right up to further thread breaks. This can mean that downtime of the false-twist texturing machine has to be accepted for several hours.
  • the invention has for its object to provide a yarn heater, which avoids the disadvantages of the prior art and in particular in which a balloon in the yarn heater even with thin yarns, especially polyamide yarns, reliably avoided.
  • a yarn feedthrough is arranged in a heating zone, at least one heating wall being provided on the yarn feedthrough, or the yarn feedthrough being formed by the heating wall (s).
  • heating means which are set up to heat the heating walls, an operating temperature of the heating walls is adjustable.
  • a yarn path is predetermined by the yarn heater.
  • at least some of the yarn guides are arranged such that the thread run predetermined by the yarn guides has a zigzag shape.
  • the yarn heater according to the invention is particularly suitable for heating preferably fine polyamide yarns (nylon yarns) to a temperature at which the yarns are plastically deformable in a false-twist texturing process.
  • the yarn guides are arranged such that the yarn path has a curved shape in a plane.
  • the zigzag arrangement of the yarn guides can lie in one plane.
  • the arcuate support avoids vibrations of the yarn perpendicular to the plane in which the zigzag-shaped yarn path is sufficient in connection with the zigzag-shaped yarn path.
  • the heating zone has a length in the direction of the yarn path of 0.4 to 0.8 meters, whereby the heater according to the invention, at an operating temperature of the heating walls of 350 to 600 degrees Celsius, heats a polyamide yarn to temperatures necessary for false-twisting.
  • the yarn heater according to the invention is therefore preferably used as a high-temperature heater.
  • the yarn sections of the polyamide yarn passing through the yarn heater are heated in each case from 0.02 to 0.04 seconds (treatment time). Due to the short length of the yarn heater according to the invention, very compact false-twist texturing machines can be produced.
  • the yarn guides are preferably equidistant at intervals between 4 and 6 centimeters, preferably 5 centimeters, arranged. With this arrangement of yarn guides, ballooning can be almost completely avoided.
  • the yarn feedthrough of a yarn heater according to the invention is designed as a groove in the heating walls, wherein the groove preferably has a diameter in the range of 2.5 to 5 millimeters.
  • the groove preferably has a diameter in the range of 2.5 to 5 millimeters.
  • FIG. 1a shows a yarn heater according to the invention in a first sectional plane.
  • FIG. 1b shows the yarn heater according to the invention in a second sectional plane perpendicular to the sectional plane shown in FIG.
  • FIG. 1 c shows a section through the yarn heater according to the invention shown in FIGS. 1 a and 1 b, perpendicular to the first and the second sectional plane.
  • a yarn heater 1 according to the invention is shown in three sectional planes which are perpendicular to one another.
  • the illustrated yarn heater 1 according to the invention has a heating zone 3 with a yarn feedthrough 5.
  • the arranged on the Garn preparement 5 Bank 7 can be heated by means of heating means 9.
  • the heating means 9 comprise, for example, a heating coil which can be heated by means of electric current.
  • a control module not shown, the temperature of the heating wall 7, for example, on the strength of the electric current flowing through the heating coil, can be controlled.
  • yarn guides 11,12 are arranged. These yarn guides 11, 12 may consist, for example, of preferably rotatable about their longitudinal axis bolt.
  • the yarn guides 11, 12 are arranged such that a thread run 13 predetermined by the yarn guides 11 has a zigzag shape. Thus, these yarn guides 11 are offset from each other within the yarn feedthrough 5.
  • the yarn guides 12 are further arranged such that the yarn path 13 in a plane has an arc shape.
  • the yarn guides 12 by means of which the yarn path 13 is forced into an arc shape is preferably arranged with their longitudinal axes perpendicular to the longitudinal axes of the yarn guides 11 which force the yarn path 13 in the zigzag shape.
  • the sectional plane of the illustration in Figure 1 c is perpendicular to the yarn path 13.
  • the heating means 9 are adjacent to the heating wall 7 in areas of Garnd trim unit 5.
  • the Garn craft equipment 5 is formed as a groove 15 in the heating wall 7.
  • the yarn guides 11, 12 are arranged inside this groove 15.
  • the groove 15 is designed for manufacturing reasons in the direction of the yarn path 13 running straight.
  • the invention is not limited to the embodiments given above. Rather, a number of variants are conceivable, which make use of the features of the invention even with fundamentally different type of execution.
  • a yarn heater 1, in particular for use in a false-twist texturing machine, is proposed with a heating zone 3 having a yarn feedthrough 5, heating walls 7 arranged at the yarn feedthrough 5, heating means arranged for heating the heating walls 7 and yarn guides 11 arranged in the yarn feedthrough 5 wherein the yarn guides 11 are arranged such that a thread run 13 predetermined by the yarn guides 11 has a zigzag shape.
  • the yarn heater is particularly suitable as a primary heater for heating a polyamide yarn in a false twist texturing process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
EP04024030A 2004-10-08 2004-10-08 Garnheizer und Verwendung eines Garnheizers Withdrawn EP1645668A1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP04024030A EP1645668A1 (de) 2004-10-08 2004-10-08 Garnheizer und Verwendung eines Garnheizers
JP2005294593A JP2006104654A (ja) 2004-10-08 2005-10-07 糸加熱装置及び糸加熱装置の使用方法
TW094135204A TW200628646A (en) 2004-10-08 2005-10-07 Yarn heater and use of a yarn heater
KR1020050094369A KR20060052113A (ko) 2004-10-08 2005-10-07 방사히터 및 방사히터의 사용
CN 200510129174 CN1772987A (zh) 2004-10-08 2005-10-08 纱线加热器及其用途

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04024030A EP1645668A1 (de) 2004-10-08 2004-10-08 Garnheizer und Verwendung eines Garnheizers

Publications (1)

Publication Number Publication Date
EP1645668A1 true EP1645668A1 (de) 2006-04-12

Family

ID=34926916

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04024030A Withdrawn EP1645668A1 (de) 2004-10-08 2004-10-08 Garnheizer und Verwendung eines Garnheizers

Country Status (5)

Country Link
EP (1) EP1645668A1 (ja)
JP (1) JP2006104654A (ja)
KR (1) KR20060052113A (ja)
CN (1) CN1772987A (ja)
TW (1) TW200628646A (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105823314A (zh) * 2016-03-30 2016-08-03 芜湖富春染织有限公司 一种纱线烘干装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011047074A (ja) * 2009-08-27 2011-03-10 Tmt Machinery Inc 仮撚加工機
CN109281010A (zh) * 2018-10-26 2019-01-29 江阴市艾格赛伦精密机械制造有限公司 高速弹力丝机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0332227A2 (en) * 1983-11-01 1989-09-13 TEIJIN SEIKI CO. Ltd. A non-touch type heater for heating a synthetic filament yarn
DE4018200A1 (de) * 1989-06-14 1991-02-07 Barmag Barmer Maschf Verfahren zum heizen eines fadens
EP0579866A1 (en) * 1992-07-24 1994-01-26 Teijin Limited An apparatus for heat treating a synthetic yarn during false-twist testuring and method for false-twist texturing
EP0751245A2 (de) * 1995-06-27 1997-01-02 B a r m a g AG Heizeinrichtung zum Erwärmen eines laufenden Fadens

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0332227A2 (en) * 1983-11-01 1989-09-13 TEIJIN SEIKI CO. Ltd. A non-touch type heater for heating a synthetic filament yarn
DE4018200A1 (de) * 1989-06-14 1991-02-07 Barmag Barmer Maschf Verfahren zum heizen eines fadens
EP0579866A1 (en) * 1992-07-24 1994-01-26 Teijin Limited An apparatus for heat treating a synthetic yarn during false-twist testuring and method for false-twist texturing
EP0751245A2 (de) * 1995-06-27 1997-01-02 B a r m a g AG Heizeinrichtung zum Erwärmen eines laufenden Fadens

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
H. CANBAZ KARAKAS, H. DAYIOGLU: "Influence of Major False-Twist Texturing Parameters on the Structural Properties of Polyamide 6.6 yarns", FIBRES AND TEXTILES IN EASTERN EUROPE, vol. 12, no. 2-46, June 2004 (2004-06-01), pages 25 - 30, XP002321026 *
SCHILO D ET AL: "EXPERIENCES IN POLYESTER TEXTURING WITH SHORT HEATER", CHEMICAL FIBERS INTERNATIONAL, DEUTSCHER FACHVERLAG, DE, vol. 46, no. 5, October 1996 (1996-10-01), pages 359 - 360, XP000629744, ISSN: 0340-3343 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105823314A (zh) * 2016-03-30 2016-08-03 芜湖富春染织有限公司 一种纱线烘干装置

Also Published As

Publication number Publication date
KR20060052113A (ko) 2006-05-19
CN1772987A (zh) 2006-05-17
JP2006104654A (ja) 2006-04-20
TW200628646A (en) 2006-08-16

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