EP0726338B1 - Procédé de fabrication d'un fil multifilament - Google Patents

Procédé de fabrication d'un fil multifilament Download PDF

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Publication number
EP0726338B1
EP0726338B1 EP96100162A EP96100162A EP0726338B1 EP 0726338 B1 EP0726338 B1 EP 0726338B1 EP 96100162 A EP96100162 A EP 96100162A EP 96100162 A EP96100162 A EP 96100162A EP 0726338 B1 EP0726338 B1 EP 0726338B1
Authority
EP
European Patent Office
Prior art keywords
melt
nozzle plate
yarn
take
heat
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
EP96100162A
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German (de)
English (en)
Other versions
EP0726338A2 (fr
EP0726338A3 (fr
Inventor
Heinz Dr. Schippers
Erich Lenk
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.)
Oerlikon Textile GmbH and Co KG
Original Assignee
Barmag AG
Barmag Barmer Maschinenfabrik AG
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Application filed by Barmag AG, Barmag Barmer Maschinenfabrik AG filed Critical Barmag AG
Publication of EP0726338A2 publication Critical patent/EP0726338A2/fr
Publication of EP0726338A3 publication Critical patent/EP0726338A3/fr
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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
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/098—Melt spinning methods with simultaneous stretching
    • 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
    • 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
    • D01D5/08—Melt spinning methods
    • D01D5/084—Heating filaments, threads or the like, leaving the spinnerettes
    • 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

Definitions

  • the invention relates to a method for producing a multifilament Thread according to the preamble of claim 1.
  • the final titer of the thread limits the productivity.
  • the Productivity in turn, can be measured by the amount conveyed (amount of Melt per unit of time) (g per min).
  • EP-A-0 089 912 in turn is a method for manufacturing known from high tenacity polyester yarn. This is melted polyester fed under pressure to a variety of nozzles. The extruded filaments are kept at a temperature close to the melting point of polyester, for which purpose a cooling-retarding area is provided, which is an infrared radiator having.
  • the object of the invention is to increase production.
  • the solution according to claim 1 is based on a continuous production process out.
  • the desired results Final titre of the thread to be produced and the desired delivery rate the winding speed of the thread, which is essentially the Final speed of the drafting system corresponds.
  • the desired stretching ratio results in the withdrawal speed of the Thread from the spinneret or vice versa: by specifying a desired one Take-off speed results in the draw ratio in both cases according to the given physical context. Only by the measure according to the invention is an increase in Significant productivity possible because only through the Invention of this physical relationship between take-off speed and stretchability can be broken.
  • Claim 2 is based on a batch production process, in which the thread is spun in the spinning stage and wound up and in the subsequent drawing stage is drawn and wound up again becomes.
  • the solution according to claim 2 allows an increase productivity by increasing the delivery rate, with the an alternative in the spinning stage a thread with not increased winding speed, however increased titer of the pre-oriented Thread wound and in the drawing stage with an increased drawing ratio is stretched. So here is the drawing stage also an increase in the thread length produced while maintaining the same Final titer.
  • the other alternative is to increase the Delivery rate an increase in the winding speed in the spinning stage and thus an increase in productivity in the spinning stage Episode. The subsequent stretching is carried out as is conventional.
  • the solution according to claim 4 mainly prevents the orientation of the Molecules in the spinneret. You have to know that the pre-orientation of the thread or thread molecules largely also by the Flow conditions in the narrow nozzle holes is caused. By the measure according to claim 4 prevents this flow orientation freezes and leads to a corresponding pre-orientation.
  • the aim is to heat the nozzle plate by more than 5 ° C, preferably 5 to 3 ° C. In the tests, the warming was approx. 10 ° C.
  • the heating of the nozzle plate according to claim 4 can, for. B. done by laying resistance heating wires in or on the nozzle plate.
  • the resistance heating wires can then be at a desired temperature operate.
  • the solution according to claim 5 has the additional advantage that none substantial change to the spinning device is required. It prevents furthermore the deposition of dirt, oligomers and monomers on the nozzle plate. Through the execution according to claim 6 ensures that a uniform heating of the Nozzle plate takes place over its entire area.
  • a thread 1 is spun from a thermoplastic material.
  • the thermoplastic material is fed to the extruder by a filling device 3 abandoned.
  • the extruder 3 is driven by a motor 4.
  • the Motor 4 is controlled by a motor controller 8.
  • the thermoplastic material is melted. This is used for One is the work of deformation that occurs through the extruder into the material is introduced.
  • a heater 5 is in the form of a Resistance heating is provided, which is controlled by a heating controller 43 becomes.
  • the melt reaches the through the melt line Gear pump 9, which is driven by pump motor 44.
  • the melt pressure upstream of the pump is detected by pressure sensor 7 and by feedback of the pressure signal to the engine control 8 constant held.
  • the pump motor is controlled by the pump controller 45 in such a way that that the pump speed can be adjusted sensitively.
  • the pump 9 promotes the melt flow to the heated spin box 10, at the The underside of the spinneret 11 is located in a nozzle pot 53 (cf. Fig. 4).
  • the melt emerges in the form of fine from the spinneret 11 Filament strands 12 out.
  • the filament strands pass through a cooling shaft 14. In the cooling shaft 14 by blowing 15 an air flow directed transversely or radially to the filament sheet and thereby chilled.
  • the filament sheet is through a Preparation roller 13 combined into a thread 1 and with a Provide the preparation liquid.
  • the thread comes out of the cooling shaft and withdrawn from the spinneret by a take-off godet 16.
  • the Thread wraps around the trigger godet several times.
  • An interlocked serves this purpose overflow roller 17 arranged to the godet 16.
  • the overflow roller 17 is freely rotatable.
  • the godet 16 is powered by a godet motor 18 and frequency generator 22 driven at a preset speed. This take-off speed is many times higher than the natural exit speed of the filaments from the spinneret 11.
  • the speed of the take-off godet 16 can be set. This will make the Pull-off speed of the thread 1 from the nozzle plate 11 is determined.
  • the deduction godet 16 is followed by a stretch godet 19 with another Overflow roller 20. Both correspond in their construction to the take-off godet 16 with overflow roller 17.
  • Stretching motor 21 with the frequency generator 23.
  • the input frequency of the Frequency converter 22 and 23 is controlled by the controllable frequency generator 24 evenly specified. In this way, the Frequency converters 22 and 23 individually the speed of the take-off godet 16 or the stretch godet 19 can be set.
  • the thread 1 arrives at the so-called "Head thread guide” 25 and from there into the traversing triangle 26.
  • a reversing thread roller and one in it guided traversing thread guide which runs the thread along the length of the bobbin 33 back and forth.
  • the thread loops behind the traversing device 27 a contact roller 28.
  • the contact roller 28 lies on the Surface of the coil 33 on. It is used to measure the surface speed the coil 33.
  • the coil 33 is on a sleeve 35th educated.
  • the sleeve 35 is clamped on a winding spindle 34.
  • the Spindle 34 is such by spindle motor 36 and spindle control 37 driven that the surface speed of the coil 33 constant remains.
  • the speed of the freely rotatable contact roller is used as the control variable 28 on the contact roller shaft 29 by means of a ferromagnetic Insert 30 and a magnetic pulse generator 31 sampled and corrected.
  • the peripheral speed of the coil 33 is by the contact roller 28 is scanned and corrected, slightly lower than the peripheral speed of the upstream godets 16 and 19, respectively.
  • the wound thread speed is namely geometrical Sum of the peripheral speed of the coil 33 and the Traversing speed of the traversing device 27, not shown.
  • FIG. 3 schematically shows a stretch texturing process.
  • the coil 33 with pre-oriented thread generated in the spinning process of FIG. 2 has been submitted to a stretch texturing machine.
  • the pre-oriented Thread is guided by thread guide 38 to an input delivery unit 39, thence by the heater 46, by the cooling rail 47, by the Friction false twister and led to the output delivery plant 50. He is then wound on the spool 52.
  • the delivery plants 39 and 50 are driven at different speeds. Thereby occurs simultaneously in the false twist zone between these delivery plants with the heating and false twist texturing the necessary stretching.
  • a continuous spin-draw process is shown. With this The process results from the winding speed and the delivery rate the final titer.
  • the nozzle plate 11 sits in the nozzle pot 53.
  • the nozzle pot 53 is in the heating box 10 housed.
  • the heater box 10 is heated. Details are not here shown.
  • Below the nozzle plate and in direct connection there is the radiation heater 56.
  • the radiation heater 56 is formed as a ring and made of steel. Its the center facing inner surface 58 is formed by a conical surface which is facing the nozzle plate. A suitable cone angle (total angle) is z. B. 30 to 40 °.
  • In the radiant heater is an annular one Heating tape 57 inserted. It is a resistance heating wire. This resistance heating wire allows the radiant heater red-hot to heat to temperatures above 300 ° to approx. 800 °. Very effective temperatures result in the temperature range between 450 and 700 °.
  • the blower 51 follows below the radiant heater described.
  • the extent of the productivity increase depends on the one hand from the illumination temperature, on the other hand from the thread titer. With larger thread titers, the effect is less or the illumination temperature will have to be chosen higher. The relationship can be determined in individual cases by experiment.
  • the procedure for the method according to FIG. 2 is as follows: To be manufactured z. B. a textured thread 50 dtex f 109 (55 f 109), i.e. a thread of 50 dtex (55 den) and 109 individual filaments. This means that each thread has an individual titer of 0.46 dtex (0.5 den) per filament (dtex / f (dpf)).
  • the stretching is determined at 1.6 as optimal for the stretch texturing process. This stretching allows good crimping and a safe texturing process without filament breaks.
  • This draw ratio means that a pre-oriented thread has to be placed on bobbin 33, which has a titer of 88 den with 109 filaments.
  • the take-off speed of 2,600 m / min results from the diagram according to FIG. 5 or the table, which is set in the process according to FIG.
  • the delivery rate on the pump must be set to 25.5 g / min for each spinning station. An increase in the delivery rate is not possible, since otherwise the withdrawal speed and thus the stretchability will also be changed.
  • the stretchability which is specified by the texturer, thus limits the productivity of the producer of the pre-oriented thread.
  • a textured thread 50 dtex f 109 (55 f 109) should be produced.
  • the take-off speed and winding speed should be in the winding zone of 3,000 m / min are not exceeded. reason for such limitations there are sometimes process difficulties with sensitive ones Yarn. Such difficulties can also be caused by the mechanical design of the rewinder, its maximum speed is limited.
  • the flow rate per spinning station can be set to 26.3 g / min.
  • the peculiarity of the invention is that the melt in the Nozzle plate is heated.
  • the nozzle plate is heated, namely in addition to the heat input from the melt and from that surrounding spin pot and the surrounding spin box.
  • the temperature of the nozzle plate is reduced by at least 5 ° C and increased up to 40 ° C.
  • the temperature around 8 to 20 ° C. It is always to be assumed that the temperature resulting from the contact of the nozzle plate with the Melt and the heated spinning box results. At - normal trip - relatively low temperature of the nozzle plate must be heated by additional heat input may be correspondingly larger.
  • the ring-shaped radiator has the opposite Advantage that, on the one hand, it prevents the nozzle and in particular the underside of the nozzle through the underlying blow-up directly is hit. On the other hand, within the ring-shaped radiator, sufficient air exchange to prevent vapors, in particular to remove monomers and oligomers and impermissible Avoid deposits on the underside of the nozzle. To clean the The bottom of the nozzle is suspended on one side in a hinge, so that it can be folded down.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Artificial Filaments (AREA)

Claims (7)

  1. Procédé de fabrication d'un fil (1) multifilament en matériau thermoplastique par la filature en fusion d'un fil préorienté (POY) et l'étirage du fil préorienté (POY) avec les étapes de procédé suivantes :
    1.1 fusion du matériau thermoplastique en une fonte ;
    1.2 transport de la fonte avec un débit de transport par unité de temps prédéterminé ;
    1.3 extrusion de la fonte à travers des trous de buse d'une plaque à buses, l'amenée de chaleur à la plaque à buses étant effectuée par transmission thermique de la fonte et de la boite de filature chauffée recevant la plaque à buses ; avec une amenée de chaleur supplémentaire à la fonte dans une zone qui est agencée dans ou directement près de la plaque à buses ;
    1.4 groupement en un fil (1) des filaments (12) sortant des trous de buse ;
    1.5 défilage du fil (1) de la filière (11) avec une vitesse de défilage prédéterminée de plus de 2000 m/min qui est si élevée que le fil (1) reçoit une préorientation de ses molécules ;
    1.6 étirage du fil (1) entre deux dispositif d'alimentation avec un coefficient d'étirage prédéterminé ;
    1.7 adaptation des étapes de procédé 1.5 et 1.6 en ajustant la vitesse de défilage et du coefficient d'étirage selon la relation physique prédéterminée entre la vitesse de défilage du fil (1) et sa capacité d'étirage ;
    1.8 adaptation de l'étape de procédé 1.2 par rapport à l'étape de procédé 1.7 en concordant le débit de transport avec la vitesse de défilage ajustée et avec le coefficient d'étirage de façon à ce que le fil (1) obtienne le titre final (dtex) prédéterminé ; et
    1.9 bobinage du fil (1);
       caractérisé par les étapes de procédé suivantes :
    1.10 dans l'étape de procédé 1.3:
    l'amenée de chaleur supplémentaire à la fonte est effectuée dans la plaque à buses et/ou directement à la sortie de la plaque à buses pour maintenir l'état liquide de fusion des écheveaux de fonte sortant des fonds des buses, qui deviennent ensuite des filaments individuels (12) ;
    1.11 dans l'étape de procédé 1.7 :
    adaptation de la vitesse de défilage ou du coefficient d'étirage à la relation physique changée entre la vitesse de défilage et le coefficient d'étirage qui résulte en fonction de la quantité de chaleur amenée à la fonte et
    1.12 dans l'étape de procédé 1.2 et 1.8 :
    adaptation du débit de transport à la vitesse de défilage adaptée, respectivement au coefficient d'étirage adapté, de façon à ce que le titre final prédéterminé soit atteint.
  2. Procédé de fabrication d'un fil (1) multifilament avec un titre final prédéterminé de matériau thermoplastique par la filature en fusion et étirage avec les étapes de procédé suivantes :
    2.1 Fusion du matériau thermoplastique en une fonte ;
    2.2 transport de la fonte avec un débit de transport par unité de temps prédéterminé ;
    2.3 extrusion de la fonte à travers les trous de buse d'une plaque à buses, l'amenée de chaleur à la plaque à buses étant effectuée par transmission thermique de la fonte et de la boite de filature chauffée recevant la plaque à buses ; avec une amenée de chaleur supplémentaire à la fonte dans une zone qui est agencée dans ou directement près de la plaque à buses ;
    2.4 groupement en un fil (1) des filaments (12) sortant des trous de buse ;
    2.5 défilage du fil (1) de la filière (11) avec une vitesse de défilage prédéterminée de plus de 2000 m/min qui est si élevée que le fil (1) reçoit une préorientation de ses molécules ;
    2.6 bobinage du fil (1) préorienté en une bobine (33) ;
    2.7 défilage du fil (1) préorienté de la bobine (33) ;
    2.8 étirage du fil (1) entre deux dispositifs d'alimentation (39, 50) avec un coefficient d'étirage prédéterminé ;
    2.9 dans les étapes de procédé 2.5 ou 2.8 :
    ajustage de la vitesse de défilage ou du coefficient d'étirage selon une relation physique donnée et
    2.10 dans l'étape de procédé 2.2:
    ajustage du débit de transport de façon à ce que dans le cas de l'ajustage de la vitesse de défilage prédéterminée, respectivement du coefficient d'étirage prédéterminé par les étapes de procédé 2.8 et 2.9, le fil (1) préorienté obtienne le titre (dtex) qui résulte du titre final prédéterminé et le coefficient d'étirage ajusté ;
    2.11 bobinage du fil (1);
       caractérisé par les étapes de procédé suivantes :
    2.12 l'amenée supplémentaire de chaleur à la fonte est effectuée dans la plaque à buses et/ou directement à la sortie de la plaque à buses pour maintenir l'état liquide de fusion des écheveaux de fonte sortant des fonds des buses, qui deviennent ensuite des filaments individuels (12) ;
    2.13 dans l'étape de procédé 2.9 :
    adaptation de la vitesse de défilage ou du coefficient d'étirage à la relation physique changée entre la vitesse de défilage et le coefficient d'étirage qui résulte en fonction de la quantité de chaleur amenée à la fonte, et
    2.14 dans l'étape de procédé 2.2 et 2.10 :
    adaptation du débit de transport à la vitesse de défilage plus élevée, respectivement au coefficient d'étirage plus élevé, de façon à ce que le titre final prédéterminé soit atteint.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'amenée de chaleur à la fonte s'effectue à la sortie de la plaque à buses en soufflant sur les écheveaux de fonte avec un courant de gaz ou d'air chaud, le courant d'air est dirigé verticalement sur les filaments (12) ou est dirigé perpendiculairement aux filaments (12) avec une composante dirigée sur la face inférieure de la plaque à buses.
  4. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'amenée de chaleur s'effectue par chauffage de la plaque à buses, la perte de chaleur de la plaque à buse étant de préférence plus que compensée par le soufflage sur les filaments (12), le rayonnement etc..
  5. Procédé selon la revendication 4, caractérisé en ce que l'amenée de chaleur s'effectue par rayonnement infrarouge sur la face inférieure de la plaque à buses.
  6. Procédé selon la revendication 5, caractérisé en ce que le rayonnement sur la face inférieure de la plaque à buses s'effectue de tous les cotés, par exemple par un radiateur (56) entourant de façon annulaire la plaque à buses, les surfaces de rayonnement (58) duquel étant dirigées sous un angle vers la face inférieure de la plaque à buses.
  7. Procédé selon la revendication 6, caractérisé en ce que le radiateur peut être plié à l'écart d'un coté.
EP96100162A 1995-02-10 1996-01-08 Procédé de fabrication d'un fil multifilament Expired - Lifetime EP0726338B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19504422 1995-02-10
DE19504422 1995-02-10

Publications (3)

Publication Number Publication Date
EP0726338A2 EP0726338A2 (fr) 1996-08-14
EP0726338A3 EP0726338A3 (fr) 1996-11-06
EP0726338B1 true EP0726338B1 (fr) 2001-11-28

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EP96100162A Expired - Lifetime EP0726338B1 (fr) 1995-02-10 1996-01-08 Procédé de fabrication d'un fil multifilament

Country Status (6)

Country Link
US (1) US5661880A (fr)
EP (1) EP0726338B1 (fr)
KR (1) KR100426837B1 (fr)
CN (1) CN1185374C (fr)
DE (1) DE59608283D1 (fr)
TW (1) TW380174B (fr)

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CN103114365A (zh) * 2013-03-13 2013-05-22 盛虹集团有限公司 复合丝雪纺面料中纬丝的织造方法
CN103556241A (zh) * 2013-10-30 2014-02-05 苏州龙杰特种纤维股份有限公司 纺织纤维生产系统
CN105821498B (zh) * 2016-05-27 2017-12-15 浙江显昱纤维织染制衣有限公司 一种纺丝机的拉伸结构
WO2019059560A1 (fr) * 2017-09-22 2019-03-28 코오롱인더스트리 주식회사 Fibre de polyéthylène téréphtalate à résistance élevée et son procédé de fabrication
JP2023053671A (ja) * 2021-10-01 2023-04-13 Ｔｍｔマシナリー株式会社 紡糸設備、及び紡糸巻取設備
CN114808158B (zh) * 2022-04-07 2023-06-09 桐昆集团浙江恒盛化纤有限公司 高匀度纤维的生产方法及其生产设备
CN118480871A (zh) * 2024-07-09 2024-08-13 江苏恒力化纤股份有限公司 一种超细丝的生产方法

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KR100426837B1 (ko) 2004-06-18
EP0726338A2 (fr) 1996-08-14
TW380174B (en) 2000-01-21
EP0726338A3 (fr) 1996-11-06
CN1136093A (zh) 1996-11-20
CN1185374C (zh) 2005-01-19
KR960031662A (ko) 1996-09-17
US5661880A (en) 1997-09-02
DE59608283D1 (de) 2002-01-10

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