EP0826802B1 - Procédé et dispositif de filature des fils multifilaments - Google Patents

Procédé et dispositif de filature des fils multifilaments Download PDF

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Publication number
EP0826802B1
EP0826802B1 EP97113582A EP97113582A EP0826802B1 EP 0826802 B1 EP0826802 B1 EP 0826802B1 EP 97113582 A EP97113582 A EP 97113582A EP 97113582 A EP97113582 A EP 97113582A EP 0826802 B1 EP0826802 B1 EP 0826802B1
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EP
European Patent Office
Prior art keywords
cooling
filaments
zone
cooling zone
side wall
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
EP97113582A
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German (de)
English (en)
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EP0826802A1 (fr
Inventor
Heinz Dr. Schippers
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 Barmag AG
Original Assignee
Barmag AG
Barmag Barmer Maschinenfabrik AG
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Publication of EP0826802A1 publication Critical patent/EP0826802A1/fr
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Publication of EP0826802B1 publication Critical patent/EP0826802B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
    • D01D5/092—Cooling filaments, threads or the like, leaving the spinnerettes in shafts or chimneys
    • 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

Definitions

  • the invention relates to a method for spinning a multifilament thread a thermoplastic material and a device for cooling freshly spun Filaments made of a thermoplastic material according to the generic term of claim 1 and the preamble of claim 8.
  • a method and an apparatus of this type are known from US Pat. No. 4,909,976. After that, the filaments are left after leaving the nozzle plate and before cooled down to a thread. You will upon leaving out of the nozzle holes through a first cooling zone, a heating zone and then through led a second cooling zone. In this known method is already in the first cooling zone worked with a high cooling rate. After that the filaments in the heating zone are exposed to hot air exposed. After leaving the heating zone, the filaments are passed through the second cooling zone led where it the glass transition and solidification temperature to reach.
  • the known method is intended to serve the structure and properties of plastic threads using the melt spinning process in the broadest sense to improve, especially the orientation and crystallinity.
  • those emerging from the nozzle plate Filaments in the first cooling zone due to a weak flow of cooling air cooled that the filament skin solidifies first. It can no longer do so come that the molten filament flows away, d. H. Thickening or Forms dilutions.
  • the heating of the filaments in the heating zone by illumination has the surprising effect that it protects the filaments, especially The mechanical stress on the filaments is also reduced because of the reheating the filaments are not made by airflow alone. In this gentle way, the thread in the heating zone is reheated, and to a temperature that is within the plasticizing range of the polymer lies, but below the solidification temperature. This will freeze the frozen ones Molecular chains broken up again, so that the mobility of the molecular chains leads to disorientation.
  • the inventive method has the advantage that the gentle Disorientation an increase in the elongation at break of the thread is achieved and a subsequent stretchability at a given take-off speed of the thread can be increased.
  • the heating can the filaments in the heating zone are also made by blowing; the before mechanical stress on the filaments is then still reduced, because most of the warming is due to the spotlight.
  • Claim 3 is a particularly favorable one for many thermoplastic materials suitable temperature range is highlighted.
  • Claims 4 and 5 show advantageous options, such as the weak one Cooling air flow for the first cooling zone can be caused.
  • Claims 6 and 7 contain advantageous guides of the cooling air flow in the second cooling zone.
  • the advantages of the device according to the invention for cooling freshly spun Filaments according to claim 8 consist in the known three-part of the To maintain cooling section, but advantageous to modify that the Reheating the filaments in the heating zone by one to the Filament-directed radiant heater is made. This reduces the mechanical Strain on the filaments when heated also has a thermal effect gentle heating and is structurally easy to implement.
  • the arrangement of the radiant heater is advantageous on both Side walls of the cooling shaft extended.
  • Filaments advantageously at least partially enveloped by the radiant heater.
  • the advantage is also achieved that the radiant heater heats the returning cooling air.
  • the upper side walls of the cooling shaft are also made, So the side walls of the first cooling zone, permeable to air, so you can the ambient air use for cooling in the first cooling zone.
  • the radiant heaters are heated Reflector plates arranged in the blow duct. It is advantageous here if an already warmed air flow is supplied by the cross-flow blowing becomes. Through the reflector plates, the through the filament bundle cooled air flow heated again and returned to the filament bundle. This ensures high uniformity of the heat treatment of the filaments causes.
  • a spinning system is shown schematically, which consists of a spinning zone I, a stretching zone II and a winding zone III.
  • the extruder 3 is driven by a motor 4.
  • the motor 4 is controlled by a motor controller 8.
  • the extruder it will melted thermoplastic material.
  • the Deformation work that is introduced into the material by the extruder.
  • a heating device 5 in the form of a resistance heater provided, which is controlled by a heating controller 43.
  • Through the Melt line passes the melt to the gear pump 9 through the Pump motor 44 is driven.
  • the melt pressure before the pump will detected by the pressure sensor 7 and by feedback of the pressure signal the engine control 8 kept constant.
  • 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, on the underside of which the spinneret 11 is located in a nozzle pot 53. Exits from the spinneret 11 the melt in the form of fine filament strands 12.
  • the Filament strands 12 pass through a cooling shaft 14 of a device for Cooling of the filaments.
  • the device is vertically below the Nozzle plate 11 arranged.
  • the filaments 12 pass through air-impermeable walls limited first cooling zone 46. That a heating zone 47 is then provided, in which the filament strands 12 can be heated by means of a radiator 52.
  • a second cooling zone 48 in which a transverse to A stream of filaments directed through an air-permeable blower wall flows.
  • the device is connected to an air supply 15.
  • the filament sheet is through a Preparation roller 13 combined into a thread 1 and with a Provide the preparation liquid.
  • the thread 1 then enters the Stretching zone II.
  • the string wraps around the trigger godet several times.
  • the overflow roller 17 is free rotatable.
  • the godet 16 is by the godet motor 18 and the Frequency generator 22 driven at a preset speed. This withdrawal speed is many times higher than the natural one 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 Discharge godet 16 is followed by a stretch godet 19 with a further overflow roller 20. Both correspond in their structure to the deduction godet 16 Overflow roller 17.
  • the stretching motor 21 is used to drive the stretching godet 19 with the frequency transmitter 23.
  • the input frequency of the frequency converters 22 and 23 is controlled by the controllable frequency generator 24 given. In this way, the frequency converter 22 and 23 individually the speed of the take-off godet 16 or the extending godet 19 can be set.
  • the speed level of the trigger godet 16 and Plug-in godet 19, on the other hand, is collected collectively by the frequency converter 24 set.
  • the thread 1 runs into the winding zone III and there to the head thread guide 25 and from there into the traversing triangle 26.
  • the thread then runs into a traversing device (not shown here), the thread by means of guide elements along a traverse stroke and brought here.
  • the traversing device is as Reverse thread roller with a traversing thread guide or as Wing traversing device executable.
  • the runs from the traversing device Thread over a contact roller 28 to the bobbin 33 to be wound Contact roller 28 lies on the surface of the coil 33. It is used for Measurement of the surface speed of the coil 33.
  • the coil 33 is formed on a sleeve 35.
  • the sleeve 35 is on a winding spindle 34 spanned.
  • the spindle 34 is driven by the spindle motor 36 and Spindle control 37 driven such that the surface speed the coil 33 remains constant.
  • the speed of the freely rotatable contact roller 28 on the contact roller shaft 29 by means of a ferromagnetic insert 30 and a magnetic pulse generator 31st sensed and corrected.
  • the method according to the invention for spinning a multifilament thread is not limited to the arrangement shown in FIG. 1. Basically is the method can also be carried out in such an arrangement in which the Stretch zone II has only one take-off godet. It is also possible that Spinning zone I can be operated directly with winding zone III, i.e. without godets.
  • FIG. 2 shows a further exemplary embodiment of a device for Cooling of the filaments shown in the spinning zone.
  • a cooling shaft 14 receiving the filaments 12 Blow boxes 54 and 64 arranged on both sides are formed.
  • the blow boxes 54 and 64 have the air-impermeable side walls 51 and 61.
  • Sidewalls 51 and 61 form the first cooling zone.
  • the first cooling zone depends on Polymer type and thread type have a length of approx. 250 mm to 500 mm.
  • the radiant heaters 52.1 - 52.3 and 62.1 - 62.3 are included Distance to each other in the cooling shaft 14 parallel to Filament bundle 12 arranged so that an air inlet between the Radiant heaters in the cooling shaft 14 is possible.
  • the radiant heaters point a surface temperature that is above 400 ° C.
  • Below the The cooling shaft 14 becomes a radiant heater through air-permeable side walls 53 and 50 formed.
  • the blow box 54 and the blow box 64 are each on an air supply 15 connected.
  • the blown air now passes over the gaps between the radiant heaters 52.1 - 52.3 and 62.1 - 62.3 and through the air-permeable blowing wall 53 and 50 into the cooling shaft 14 inside.
  • the preparation roller 13 is below the cooling shaft 14 arranged where the filament bundle 12 merged into a thread 1 becomes.
  • FIG. 3 A cross section of the heating zone of a blow chamber 54 is shown in FIG. 3.
  • the filament bundle 12 passes through the cooling shaft 14 Cooling shaft 14 is limited by the side walls 57 and 58.
  • the blowing chamber 54 with the blowing wall 53 is of such a type transverse to the filament bundle arranged that the inflowing air in the blow chamber 54 through the Blower wall flows across the filaments along side walls 57 and 58.
  • Opposite the blower wall 53 on the opposite side of the A reflector plate 55 is arranged in the filament bundle.
  • the reflector plate is heated by a resistance heating wire 56. This will be a direct one Heating of the filaments and heating of the cooling air flowing back generated.
  • FIG. 4 is a further embodiment of a device for Cooling of the filaments shown in the spinning zone.
  • the arrangement shown is the side walls 51 and 61 of the cooling shaft 14 air permeable directly below the spinneret 11. Likewise, they are Radiant heaters 52.1 - 52.3 arranged on both sides of the filament bundle and 62.1 - 62.3 again arranged at a distance. This enables that the ambient air can flow into the blow duct and thus leads in particular to a better cooling effect in the first cooling zone.
  • the blow box 59 is connected to the air supply 15 connected.
  • the blow walls 53 and 50 are permeable to air, so that a Airflow from the blow chambers 59 and 60 across the filament bundle 12 in flows into the cooling shaft 14.
  • Below the cooling shaft 14 is again a preparation device 13 is arranged to form the thread 1.
  • the second cooling zone 48 is high in the processes Withdrawal speeds are also advantageously designed such that a self-priming air flow is drawn into the blow duct 14. Here active blowing would be omitted.

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

Claims (13)

  1. Procédé de filature d'un fil multifilament (1) à partir d'un matériau thermoplastique, dans le cas duquel le matériau thermoplastique fondu est pressé en filaments (12) à travers une pluralité de trous de buse d'une plaque à buses (11), dans le cas duquel les filaments (12) sont refroidis avant la réunion en un fil (1), les filaments (12) en sortant des trous de buse étant guidés à travers une première zone de refroidissement (46), une zone de chauffage (47) et ensuite à travers une deuxième zone de refroidissement (48), caractérisé en ce que les filaments (12) sont refroidis d'abord de manière telle dans la première zone de refroidissement (46) par un courant d'air de refroidissement faible que d'abord la peau de filament se solidifie, qu'ils soient ensuite chauffés par rayonnement dans la zone de chauffage (47) entre la première zone de refroidissement (46) et la deuxième zone de refroidissement (48) et ensuite à nouveau refroidis dans la deuxième zone de refroidissement (48).
  2. Procédé selon la revendication 1, caractérisé en ce que le chauffage des filaments (12) dans la zone de chauffage (47) est effectué par rayonnement et par soufflage.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le rayonnement est effectué par un radiateur chauffant (52), qui est réglé à une température d'au moins 400 °C.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que le refroidissement des filaments (12) jusqu'à la solidification de la peau de filament dans la première zone de refroidissement (46) est effectué par un faible courant d'air de refroidissement étant introduit de l'extérieur à l'intérieur.
  5. Procédé selon la revendication 4, caractérisé en ce que le courant d'air de refroidissement est généré par auto aspiration ou par soufflage.
  6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce que le refroidissement des filaments (12) dans la deuxième zone de refroidissement (48) est effectué par un courant d'air de refroidissement d'un soufflage de l'extérieur à l'intérieur ou de l'intérieur à l'extérieur.
  7. Procédé selon l'une des revendications 1 à 5, caractérisé en ce que le refroidissement des filaments (12) dans la deuxième zone de refroidissement (48) est effectué par un courant d'air de refroidissement généré par auto aspiration.
  8. Dispositif destiné au refroidissement de filaments (12) fraíchement filés à partir d'un matériau thermoplastique qui est agencé perpendiculairement en dessous d'une plaque à buses (11) et qui présente un puits de refroidissement (14) ayant une première zone de refroidissement (46), une zone de chauffage (47) et une deuxième zone de refroidissement (48), au moins une paroi latérale du puits de refroidissement (14) étant subdivisée en une paroi latérale supérieure (51) dans la région de la première zone de refroidissement (46) et en une paroi latérale inférieure (53) dans la région de la deuxième zone de refroidissement (48) et la paroi latérale inférieure (53) étant réalisée de manière perméable à l'air, caractérisé en ce qu'un radiateur chauffant (52) orienté vers les filaments est agencé entre la paroi latérale supérieure (51) et la paroi latérale inférieure (53) pour irradier les filaments (12).
  9. Dispositif selon la revendication 8, caractérisé en ce que des deux cotés des filaments (12) les parois latérales du puits de refroidissement (14) sont subdivisées en parois latérales (51, 61) supérieures et en parois latérales inférieures (50, 53) et qu'au moins respectivement un radiateur chauffant (52, 62) est agencé entre les parois latérales supérieures et inférieures.
  10. Dispositif selon la revendication 8, caractérisé en ce que le radiateur chauffant (52) est réalisé en forme annulaire de façon telle que les filaments soient au moins partiellement enveloppés.
  11. Dispositif selon l'une des revendications précédentes, caractérisé en ce que la paroi latérale supérieure (51) et la paroi latérale inférieure (53) sont reliés à une chambre de soufflage (54) de façon telle qu'un courant d'air de refroidissement puisse affluer de l'extérieur à l'intérieur dans le puits de refroidissement (14) et que le radiateur chauffant est réalisé en tant que tôle réfléchissante chauffée (55).
  12. Dispositif de refroidissement selon l'une des revendications 9 à 11, caractérisé en ce qu'au moins une des parois latérales supérieures (51, 61) est perméable à l'air.
  13. Dispositif selon l'une des revendications précédentes, caractérisé en ce que plusieurs radiateurs chauffants (52.1, 52.2) sont agencés entre-eux de telle manière qu'entre les radiateurs chauffants (52.1, 52.2) un courant d'air puisse être généré dans le puits de refroidissement (14) ou de celui-ci.
EP97113582A 1996-08-28 1997-08-06 Procédé et dispositif de filature des fils multifilaments Expired - Lifetime EP0826802B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19634724 1996-08-28
DE19634724 1996-08-28

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EP0826802A1 EP0826802A1 (fr) 1998-03-04
EP0826802B1 true EP0826802B1 (fr) 2001-11-28

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EP97113582A Expired - Lifetime EP0826802B1 (fr) 1996-08-28 1997-08-06 Procédé et dispositif de filature des fils multifilaments

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US (1) US5928587A (fr)
EP (1) EP0826802B1 (fr)
DE (1) DE59705511D1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2001294554A1 (en) 2000-09-15 2002-03-26 First Quality Fibers, Inc. Apparatus for manufacturing optical fiber made of semi-crystalline polymer
US7384583B2 (en) * 2001-04-06 2008-06-10 Mitsui Chemicals, Inc. Production method for making nonwoven fabric
JP2002302862A (ja) * 2001-04-06 2002-10-18 Mitsui Chemicals Inc 不織布の製造方法及び装置
KR101143536B1 (ko) 2002-07-05 2012-05-09 어플라이드 폴리머 이노베이션즈 엠멘 비.브이. 방사방법
WO2005095683A1 (fr) * 2004-03-16 2005-10-13 Saurer Gmbh & Co. Kg Dispositif de filage par fusion et de refroidissement
ITMI20041137A1 (it) * 2004-06-04 2004-09-04 Fare Spa Apparecchiatura per il trattamento di filati sintetici
US7842208B2 (en) * 2007-07-21 2010-11-30 Diolen Industrial Fibers B.V. Spinning method
US8282384B1 (en) 2011-04-15 2012-10-09 Thomas Michael R Continuous curing and post curing apparatus
CN102912464B (zh) * 2012-11-13 2016-08-24 广州市新辉联无纺布有限公司 一种热塑性材料纺丝设备
MY180333A (en) * 2013-09-26 2020-11-28 Reliance Industries Ltd System, method and device for quenching synthetic multifilament fibers
CN117552119B (zh) * 2024-01-08 2024-04-30 江苏恒力化纤股份有限公司 一种高尺寸稳定性高模低缩涤纶工业丝的制备方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3732346A (en) * 1970-08-10 1973-05-08 Allied Chem Method to produce spun-drawn polycaprolactam yarn having improved resistance to ozone fading
US4529368A (en) * 1983-12-27 1985-07-16 E. I. Du Pont De Nemours & Company Apparatus for quenching melt-spun filaments
US5173310A (en) * 1988-03-24 1992-12-22 Mitsui Petrochemical Industries, Ltd. Device for cooling molten filaments in spinning apparatus
JP2674656B2 (ja) * 1988-03-24 1997-11-12 三井石油化学工業株式会社 紡糸装置における溶融フィラメントの冷却方法並びにその装置
US4909976A (en) * 1988-05-09 1990-03-20 North Carolina State University Process for high speed melt spinning
JP3370750B2 (ja) * 1993-10-20 2003-01-27 昭和電工株式会社 マルチフィラメントの製造方法
TW288052B (fr) * 1994-06-30 1996-10-11 Du Pont
EP0726338B1 (fr) * 1995-02-10 2001-11-28 B a r m a g AG Procédé de fabrication d'un fil multifilament

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DE59705511D1 (de) 2002-01-10
EP0826802A1 (fr) 1998-03-04
US5928587A (en) 1999-07-27

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