WO2017148994A1 - Procédé et dispositif pour le filage en masse fondue d'un fil synthétique pour des applications techniques - Google Patents

Procédé et dispositif pour le filage en masse fondue d'un fil synthétique pour des applications techniques Download PDF

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Publication number
WO2017148994A1
WO2017148994A1 PCT/EP2017/054730 EP2017054730W WO2017148994A1 WO 2017148994 A1 WO2017148994 A1 WO 2017148994A1 EP 2017054730 W EP2017054730 W EP 2017054730W WO 2017148994 A1 WO2017148994 A1 WO 2017148994A1
Authority
WO
WIPO (PCT)
Prior art keywords
thread
godets
godet
axes
duo
Prior art date
Application number
PCT/EP2017/054730
Other languages
German (de)
English (en)
Inventor
Jürgen Eichel
Thomas Miernik
Marco Müller
Milan Ivanovic
Ralf Wilkehl
Angela Hutter
Original Assignee
Oerlikon Textile Gmbh & Co. Kg
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 Oerlikon Textile Gmbh & Co. Kg filed Critical Oerlikon Textile Gmbh & Co. Kg
Publication of WO2017148994A1 publication Critical patent/WO2017148994A1/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
    • D01D10/04—Supporting filaments or the like during their treatment
    • D01D10/0436—Supporting filaments or the like during their treatment while in continuous movement
    • D01D10/0445—Supporting filaments or the like during their treatment while in continuous movement using rollers with mutually inclined axes
    • 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
    • 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
    • D02J1/229—Relaxing
    • 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
    • D02J13/005—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass by contact with at least one rotating roll
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
    • D01D10/02—Heat treatment
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/12—Stretch-spinning methods
    • D01D5/16—Stretch-spinning methods using rollers, or like mechanical devices, e.g. snubbing pins

Definitions

  • the invention relates to a method for melt spinning a synthetic see thread for technical applications according to the preamble of claim 1 and an apparatus for melt spinning a synthetic thread for technical applications according to the preamble of claim 4.
  • a generic device and a generic method for producing a synthetic Thread for technical applications are known from DE 102010048219A1. Here are three spinnerets shown, from each of which a thread is extruded. After cooling and preparation of the threads, they are stretched and relaxed by means of a treatment device.
  • the treatment facility consists of several Galettenduos. Each thread is looped several times around two godets of a godet duo. For this purpose, two axes of the two godets of a godet godet are arranged inclined to each other.
  • the sense of rotation of the two godets of a godet duo is the same.
  • a thread When a thread is passed over the surface of a godet, it has a godet facing the bottom of the thread and a godet facing away from the top of the thread.
  • each thread is guided on both godets with the same thread side, namely the lower side of the thread. Since the godets for the heat treatment of the threads are designed to be heated, it is precisely this heating of the threads always taking place from the same side within a godet dome. This circumstance leads to an uneven heating of the threads and thus also to an uneven stretching or relaxation. The maximum achievable thread quality therefore knows an upper limit.
  • the godet duos are numbered in the direction of the threadline.
  • the first and second stretched godet duo are operated in opposite directions of rotation.
  • the threads are heated by means of the second draw godet duo from the opposite side of the thread, as is the case with the first draw godet duo.
  • the directions of rotation of the other godets up to the last godet no longer differ from the direction of rotation of the godets of the second draw godet duo, so that the yarn from the second draw godet duo is always heated from the same side.
  • a thread entwines the two godets of a godet godet mutually and wherein these two godets rotate with different directions of rotation.
  • the thread is wound several times around the two godets of a godet by means of a cross-stroke.
  • the thread is constantly changing from two opposite sides of the godets thus contacted also tempered.
  • One galette of a goddess leads the thread from one side, the other godet leads the thread from the opposite side. This creates a particularly large wrap angle of the thread around the godets.
  • the thread can be brought very quickly to the desired temperature by means of the thread guide described.
  • the mutual heat treatment on the other hand also due to the long contact time between the thread and the godet surfaces, which results from the large wrap angles.
  • a heat treatment is advantageously carried out with heated godets, in the case of cooling, for example in a relaxation treatment but also unheated godets are conceivable.
  • the thread is formed from a plurality of filaments. These are extruded from a spinneret. For this purpose, a multiplicity of nozzle bores is introduced into the spinneret, which are connected via melt lines to a melt source.
  • Such threads for technical applications can be used in many areas, for example in airbags, seat belts, tire cords or belts. Such threads for technical applications are often referred to in practice as IDY (Industrial Yarn) or as technical yarn.
  • the thread is withdrawn from the spinneret by means of a withdrawal godet duo.
  • the thread is stretched by means of at least two stretch godet duo and relaxed by means of at least one relaxation godet duo.
  • the thread is wound on a winding head to form a bobbin. So it is possible to achieve the high quality requirements, which are necessary if the IDY is to be used for example in airbags or seat belts. In this case, a technical yarn with particularly high strength and low shrinkage or with a particularly high modulus of elasticity and low shrinkage can be produced.
  • the object is also achieved by a generic device in which a drive device of a godet duo is so pronounced that the two godets of this godet can each be driven with different direction of rotation.
  • the thread can be guided by mutual wrapping around the two godets of the godet duo. Due to the mutual wrap, a large wrap angle is created around the two godets, which is significantly larger than 180 °. This large wrap angle causes large draw forces to be applied to the thread without the thread slipping over the surfaces of the godets. Such slippage should be avoided in any case, as it would lead to uncontrollable process conditions and thus also to poor yarn quality.
  • the thread is contacted by the godets from both sides, not just from one side. This improves the heat transfer between thread and godets and the thread can be adjusted very quickly and particularly evenly to the temperatures necessary for the treatment.
  • the drive device preferably consists of two motors.
  • the drive device serves to set the two godets of a godet in rotation. Due to the very low purchase cost of electric motors nowadays, such an arrangement has economic advantages over a combination of a single motor and associated gear. Furthermore, when using two motors, in each case a compact assembly of galette and associated motor, which is very flexible. Such a compact unit can be easily exchanged between different positions in the system. This also saves time and costs in the design.
  • two axes of the two godets of a godet duo are arranged inclined to one another such that these two axes intersect in their virtual extension. This ensures that the thread does not get in the way of the multiple wrapping around the two godets. After each wrap, the yarn is in fact guided on each godet at an axially offset position. The thread wanders so each wrap around to a projecting end of the godet.
  • the arrangement shown here is based on cylindrical godets. Alternatively, parallel godet axes and conical godets could be used.
  • the two axes of two godets of a godet duo are usually arranged skewed relative to one another in order to achieve the so-called yarn offset described above. Such a skewed arrangement would but lead to a collision of the thread with itself in the here implemented cross-wrap.
  • An angle formed between these two axes is preferably between 4 ° and 20 °.
  • the optimum compromise lies between the certainty that the thread will not touch itself and the requirement for the smallest possible godet in terms of its axial length. The longer a godet is, the more expensive is its production and the greater are the mechanical loads on the godet in the operation of the system.
  • a distance between the two godets of a godet to each other is advantageously 400 mm to 1,000 mm. This distance is measured between the two axes of the godets on a support wall. On this carrier wall, which is connected to a machine frame, the two godets are stored. This ensures that there is enough space between the two godets to guide the thread during the threading process to start the process by means of a suction gun. Furthermore, the temperature of the thread can be even if this is in the space between the two godets.
  • the above-mentioned distance in combination with usual godet diameters of 200mm - 280mm and usual rotation speeds leads to an optimal equalization of the temperature.
  • the godets of at least one godet duct are designed to be heated.
  • the guided on the godets thread can be brought to the temperature necessary for the treatment.
  • it is expediently heated or cooled by means of the godet duo which precedes the yarn path.
  • the two godets of at least one godet duo are arranged within a heating box.
  • Such heating boxes have insulated walls and completely surround a pair of godets. This reduces heat transfer from the godets to the environment through radiation and convention to a minimum.
  • Fig.l schematically a front view of an embodiment of the device according to the invention
  • FIG. 1 shows schematically a front view of an embodiment of the device according to the invention.
  • a spinneret 3 a plurality of filaments is extruded during operation of the plant.
  • the spinneret 3 is supplied with a synthetic polymer in liquid form and under pressure.
  • an extruder and a spin pump are used.
  • synthetic polymers many different materials are conceivable, in particular, here are polyethylene terephthalate and polyamide.
  • the filaments are first cooled, which is not shown here for the sake of clarity. Subsequently, the filaments are treated by means of a preparation fluid. This purpose is served by a first preparation roller 4.1, a hold-down device 5 and a second preparation roller 4.2.
  • a collection thread guide 6 is arranged, by means of which the plurality of filaments is combined to form a thread 1.
  • the deduction godet duo 8.1 is used to withdraw the thread 1 from the spinneret 3, whereby a so-called spinning delay occurs.
  • the withdrawal godet duo 8.1 is in addition to a first stretching godet duo 8.2, a second draw godet duo 8.3, a first elaxiergalettenduo 8.4 and a second Relaxiergalettenduo 8.5 part of a treatment device 7, in which the thread 1 withdrawn, stretched and relaxed.
  • Each of these galette duos consists of two godets 9.1 and 9.2, 9.3 and 9.4, 9.5 and 9.6, 9.7 and 9.8 and 9.9 and 9.10, which are each driven by a rear-mounted motor.
  • the two godets of a godet godet each rotate with different directions of rotation, as symbolized by the arrows on the front sides of the godets 9.1 - 9.10.
  • the godets 9.3 - 9.10 are heated. To reduce the heat loss these godets 9.3 - 9.10 are positioned in heaters 17.1 - 17.4. In each case a pair of godets 8.1, 8.2, 8.3 or 8.4 is arranged within a heating box 17.1, 17.2, 17.3 or 17.4. All previously named units for forming a yarn path are held on a machine frame 2. Below the treatment device 7, a winding head 18 is arranged, by means of which the thread 1 is wound into a coil. In order to draw the thread 1 during operation of the system, the two godets 9.3 and 9.4 of the first stretching godet duo 8.2 rotate at a higher speed than the two godets 9.1 and 9.2 of the withdrawal godet duct 8.1.
  • the two godets 9.4 and 9.5 of the second draw godet tube 8.3 rotate at a higher speed than the two godets 9.3 and 9.4 of the first draw godet nozzle 8.2 in order to subject the yarn 1 to a second drawing treatment.
  • the following godets 9.7 - 9.10 of the two ellipse godet duos 8.4 and 8.5 have a speed that is the same or even slightly reduced in contrast to the last draw godet duo 8.3, so that the yarn 1 has the opportunity to relax.
  • the winding head 18 is operated in such a way that no substantial difference in speed of the thread 1 is established between the relaxation belt pair 8.5 and the winding head 18.
  • the treatment device 7 shown here could also be designed differently in the sense of the invention.
  • FIG. 2 In order to illustrate the funnelschlummmschlmgitch the thread 1 to the two godets of a godet, is shown in Figure 2 by way of example and schematically a view of the first stretched godet duel 8.2 from below.
  • the other Galettenduos are constructed analogously.
  • the same reference numerals are used as in Fig.1.
  • the two godets 9.3 and 9.4 are held on a support wall 16 and are driven by two motors 15.1 and 15.2 in opposite directions, as symbolized by the two arrows on the right of the godets 9.3 and 9.4.
  • These two motors 15.1 and 15.2 form a drive device 14 of the draw godet 8.2.
  • An axis 10.1 of the godet 9.3 intersects an axis 10.2 of the godet 9.4 at an intersection point 1.
  • An angle 12, which forms between these two axes 10.1 and 10.2 has values between 4 ° and 20 °.
  • a distance 13 between the two axes 10.1 and 10.2 is at the support wall 16 400mm - 1,000mm, the diameter of the godets 9.3 and 9.4 are at values between 200mm and 280mm.
  • the thread 1 wraps around the godet 9.4 from a lower circumference to an upper circumference.
  • the wrap angle of the thread 1 to the galette 9.4 is significantly greater than 180 °.
  • such a group of threads can also be applied to the godets 9.1 - 9.10 of the treatment device 7 by means of a single suction gun.
  • the winding head 18 is at the parallel Production of several threads so pronounced that this plurality of threads can be wound in parallel on a cantilevered winding spindle of the winding head 18 to a plurality of coils. Under certain circumstances, the threads of the yarn sheet are divided into two adjacent winding heads.

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

La présente invention concerne un procédé et un dispositif pour le filage en masse fondue d'un fil synthétique pour des applications techniques. Dans le cas des dispositions à galettes connues, c'est-à-dire lors de l'utilisation de duos de galettes enroulées plusieurs fois présentant des galettes tournant dans le même sens, le traitement thermique des fils est irrégulier. De ce fait, les qualités maximales de fils qu'on peut atteindre sont soumises à une limite supérieure. Dans le procédé selon l'invention et dans le cas du procédé selon l'invention, le fil est enroulé alternativement autour de deux galettes tournant en sens inverse d'un duo de galettes, de telle sorte qu'il est mis en contact alternativement par deux côtés opposés. On obtient ainsi un traitement thermique très régulier du fil de telle sorte que des fils techniques d'une qualité particulièrement élevée peuvent être produits.
PCT/EP2017/054730 2016-03-04 2017-03-01 Procédé et dispositif pour le filage en masse fondue d'un fil synthétique pour des applications techniques WO2017148994A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016002647.2A DE102016002647A1 (de) 2016-03-04 2016-03-04 Verfahren und Vorrichtung zum Schmelzspinnen eines synthetischen Fadens für technische Anwendungszwecke
DE102016002647.2 2016-03-04

Publications (1)

Publication Number Publication Date
WO2017148994A1 true WO2017148994A1 (fr) 2017-09-08

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PCT/EP2017/054730 WO2017148994A1 (fr) 2016-03-04 2017-03-01 Procédé et dispositif pour le filage en masse fondue d'un fil synthétique pour des applications techniques

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DE (1) DE102016002647A1 (fr)
WO (1) WO2017148994A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3077313A (en) * 1960-06-28 1963-02-12 Du Pont Yarn guide and string-up apparatus
DE102010048219A1 (de) 2009-11-25 2011-05-26 Oerlikon Textile Gmbh & Co. Kg Verfahren und Vorrichtung zum Schmelzspinnen, Verstrecken und Entspannen mehrerer synthetischer Fäden

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3077313A (en) * 1960-06-28 1963-02-12 Du Pont Yarn guide and string-up apparatus
DE102010048219A1 (de) 2009-11-25 2011-05-26 Oerlikon Textile Gmbh & Co. Kg Verfahren und Vorrichtung zum Schmelzspinnen, Verstrecken und Entspannen mehrerer synthetischer Fäden

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Publication number Publication date
DE102016002647A1 (de) 2017-09-07

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