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EP2737113B1 - Procédé et installation de fabrication d'un fil sans fin - Google Patents

Procédé et installation de fabrication d'un fil sans fin Download PDF

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Publication number
EP2737113B1
EP2737113B1 EP12743649.1A EP12743649A EP2737113B1 EP 2737113 B1 EP2737113 B1 EP 2737113B1 EP 12743649 A EP12743649 A EP 12743649A EP 2737113 B1 EP2737113 B1 EP 2737113B1
Authority
EP
European Patent Office
Prior art keywords
drafting
roller pair
rollers
pair
thread
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.)
Active
Application number
EP12743649.1A
Other languages
German (de)
English (en)
Other versions
EP2737113A1 (fr
Inventor
Lassaad NASRI
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.)
Truetzschler Switzerland AG
Original Assignee
Truetzschler Switzerland 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 Truetzschler Switzerland AG filed Critical Truetzschler Switzerland AG
Publication of EP2737113A1 publication Critical patent/EP2737113A1/fr
Application granted granted Critical
Publication of EP2737113B1 publication Critical patent/EP2737113B1/fr
Active 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
    • D01D5/12—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
    • 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

Definitions

  • the present invention relates to an apparatus and a method for producing an endless thread from a synthetic polymer melt.
  • Methods for producing threads with high strength are known from the prior art.
  • the WO2009 / 061161 such a process.
  • An increased strength of the polyester threads is achieved through the use of a polymer melt with a high intrinsic viscosity.
  • the polymer melt is kept under a nitrogen atmosphere in order to avoid contact with the ambient air.
  • the filament strands spun from the polymer melt are passed immediately after the spinnerets through a reheater, which improves the stretchability of the parliamentary strands.
  • the EP 1 382 724 A1 relates to a method for producing a polyester yarn with high strength in which neither heating devices nor cooling devices are provided in a drawing zone.
  • the device for producing an endless thread from a synthetic polymer melt comprises a spinning device for extruding and cooling a plurality of filament strands, a device for applying a spinning preparation, a spooling device and a stretching zone arranged between the spinning device and the spooling device for stretching the filament strands.
  • the stretching zone is formed by a pair of infeed rollers arranged after the spinning device and subsequent four to six, preferably five, pairs of stretching rollers.
  • the first pairs of stretching rollers are provided with a heating device and the last pair of stretching rollers is provided with a cooling device. At least one of the two rolls of a heated pair of stretching rolls is provided with a heating device.
  • the cooling effect on the thread wrapping around the pair of stretching rollers several times is additionally increased by providing both rollers of the last pair of stretching rollers with a cooling device.
  • the active cooling of the thread via the last pair of drawing rollers influences the molecular chains in the polymer, which leads to an increase in strength.
  • the crystallinity and the orientation of the molecules are influenced and the molecular structure is fixed by cooling.
  • the effect of the fixation is achieved by the rapid cooling of the filament strands with the help of the cooled stretching rollers.
  • the filament strands are guided several times around the drawing roller, which leads to an increased cooling capacity.
  • the pair of infeed rollers as well as the pairs of stretching rollers can be designed as so-called duos with two driven rollers or as so-called monos with one driven roller and an associated idler roller.
  • one infeed roller and five pairs of stretching rollers are used.
  • the infeed roller is designed as a mono and the stretching roller pairs as a duo.
  • the respective pairs of rollers are wrapped several times by the filament strands.
  • a surface temperature of the roll provided with the cooling device of the last pair of stretching rolls is provided to be less than 100 ° C.
  • the surface temperature is preferably less than 60 ° C.
  • Liquid cooling is best suited as a cooling device. Heat is extracted from the thread over the surface of the roll. The heat is dissipated via a coolant circulating in the roll. The temperature of the cooling liquid is regulated in such a way that the surface temperature of the roll does not exceed the predetermined temperature of 100 ° C., preferably 60 ° C.
  • the stretch zone is formed by the pair of infeed rollers and the subsequent pairs of stretch rollers.
  • Five pairs of drafting rollers are preferably arranged downstream of the pair of inlet rollers.
  • a total stretching of the thread coming from the spinning device to three to eight times its original length is provided over the entire stretching zone.
  • the total draw is preferably five to seven times.
  • the stretching in detail between the inlet roller pair and the first pair of stretching rollers is 1.02 to 1.1, between the first pair of stretching rollers and the second pair of stretching rollers 4 to 6, between the second pair of stretching rollers and the third pair of stretching rollers 1.2 to 2.0 the third pair of stretch rollers and the fourth pair of stretch rollers 0.7 to 1.2 and between the fourth pair of stretch rollers and the fifth pair of stretch rollers 0.7 to 1.2.
  • the total stretching is 6.2 times.
  • the stretching between the inlet roller pair and the first pair of stretching rollers is 1.04, between the first pair of stretching rollers and the second pair of stretching rollers 4.6, between the second pair of stretching rollers and the third pair of stretching rollers 1.3, between the third pair of stretching rollers and the fourth pair of stretching rollers 1 , 01 and between the fourth pair of stretching rollers and the fifth pair of stretching rollers 1.0.
  • the actual stretching is carried out between the pairs of stretching rollers.
  • the rollers of a pair of stretching rollers are operated essentially at the same speed.
  • the temperatures of the heated stretching rollers must be provided. At least one of the two rollers of a pair of stretching rollers is heated in each case. Both rolls of a pair of stretching rolls are preferably heated to the same temperature.
  • the surface temperatures are in the range 40 to 90 ° C for the first pair of stretching rollers, 80 to 170 ° C for the second pair of stretching rollers, 120 to 280 ° C for the third pair of stretching rollers and 120 to 250 ° C for the fourth pair of stretching rollers.
  • the surface temperatures are 85 ° C for the first pair of stretch rollers, 110 ° C for the second pair of stretch rollers, 245 ° C for the third pair of stretch rollers and 225 ° C for the fourth pair of stretch rollers.
  • the fifth pair of stretching rollers has the effect of influencing and fixing the molecular orientation within the individual filaments of the thread, which results in greater strength.
  • This enables threads to be produced which have a strength of more than 80 cN / tex with an elongation of less than 12%.
  • the threads preferably have a strength of more than 85 cN / tex with an elongation of less than 11%.
  • the threads produced according to the invention preferably have a strength of more than 50 cN / tex with an elongation of less than 5%, this is also referred to as TASE (Tenacity At Specific Elongation).
  • a thread with high strength can be produced with the device according to the invention with different polymer melts.
  • polyester this is already possible with polymer melts with an intrinsic viscosity of less than 1.2 dl / gr, preferably less than 1.03 dl / gr.
  • polyamide polymer melts with a relative viscosity of less than 3.6, preferably less than 3.5, can be used.
  • polypropylene polymer melts with a melt flow index greater than 2, preferably greater than 4, can be used.
  • Figure 1 shows a schematic representation of an embodiment of a device for producing an endless thread from a synthetic polymer melt.
  • a plurality of filament strands 3 are extruded with a spinning device 1 at a temperature of 40 ° to 50 ° above the melting temperature of the polymer used.
  • the filament strands 3 are cooled to a temperature below 50 ° C., preferably to 20 ° C.
  • the cooling within the blow duct 2 can be carried out by cooling air.
  • the filament strands 3 are then combined to form a thread 5 and provided with a spinning preparation 4. After the spinning preparation had been applied, the thread 5 succeeded, via a pre-intermingling 6, into a pair of feed rollers 7.
  • the pre-intermingling 6 can also be dispensed with.
  • the presence of a pre-intermingling 6 simplifies the further guidance of the filament strands 3 and the thread 5, respectively.
  • the pair of inlet rollers 7 consists of a driven roller and a non-driven idler roller. Following the pair of infeed rollers 7, the thread 5 is guided over five pairs of stretching rollers 8, 9, 10, 11, 12.
  • the inlet roller pair 7 and the stretching roller pairs 8, 9, 10, 11, 12 are advantageously wrapped around the thread 5 several times.
  • the two rollers of a pair of stretching rollers 8, 9, 10, 11, 12 are driven at the same peripheral speed.
  • the successive pairs of stretching rollers 9, 10, 11, 12 are driven at a different peripheral speed than the previous pair of stretching rollers 8, 9, 10, 11.
  • the thread 5 between the pairs of stretching rollers 8, 9, 10, 11, 12 is subjected to tension at an increasing peripheral speed and stretched accordingly. With a falling peripheral speed, the thread 5 is relieved and undergoes relaxation.
  • the former pairs of stretching rollers 8, 9, 10, 11 are provided with a heating device (not shown).
  • the last pair of stretching rollers 12, however, is provided with a cooling device 14.
  • At least one roller of the pair of stretching rollers 12 is connected to the cooling device 14 via coolant connections 13.
  • the introduced through the thread 5 into the stretching rollers 12 over their surface Heat is dissipated via a coolant through the coolant connections 13 to the cooling device 14, thereby cooling the thread 5 itself.
  • Pipes or hoses can be used as coolant connections 3.
  • both rollers of the pair of stretching rollers 12 are connected to the cooling device 14.
  • the thread 5 is fed to a winding device 16 via a swirl 15.
  • Figure 2 shows a graphical representation of the strength curve F as a function of the elongation D using the example of polyester.
  • the broken line 20 shows the force-elongation curve of a conventional yarn according to the prior art.
  • a tensile test is carried out, a yarn is drawn out with increasing load.
  • the course of the strength F as a function of the elongation D is recorded. If the elongation D is increased, that is to say an extension of the yarn caused by an increase in the load, the yarn will tear at a particular elongation D.
  • the curve shown with a solid line 21 shows the course of the strength of a yarn which was produced with a device according to the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Artificial Filaments (AREA)

Claims (7)

  1. Appareil destiné à la production d'un fil sans fin (5) à partir d'une masse fondue de polymère synthétique avec un dispositif de filage (1) destiné à extruder et refroidir une pluralité de brins formant filament (3), avec un appareil destiné à appliquer un préparation de filage (4), avec un dispositif de bobinage (16) et avec une zone d'étirage prévue entre le dispositif de filage (1) et le dispositif de bobinage (16) en vue de l'étirage des brins formant filament (3), dans lequel la zone d'étirage est formée d'une paire de rouleaux d'entrée (7) et de quatre à six paires de rouleaux d'étirage (8, 9, 10, 11, 12) successives,
    caractérisé en ce que
    un étirage total compris entre 3 et 8 fois est prévu dans la zone d'étirage, les premières paires de rouleaux d'étirage (8, 9, 10, 11) sont munies d'un dispositif de chauffage et la dernière paire de rouleaux d'étirage (12) est munie d'un dispositif de refroidissement (13, 14), dans lequel les brins formant fil (3) sont guidés de manière répétée via le dispositif de refroidissement (13, 14) de la dernière paire de rouleaux d'étirage (12),
    une température de surface du rouleau, muni du dispositif de refroidissement (13, 14), de la dernière paire de rouleaux d'étirage (12) est prévue pour être inférieure à 100 °C, de manière préférée inférieure à 60 °C, au moins un des deux rouleaux de la paire de rouleaux d'étirage (8, 9, 10, 11) munie d'un dispositif de chauffage est muni du dispositif de chauffage (13, 14), et les deux rouleaux de la dernière paire de rouleaux d'étirage (12) sont munis d'un dispositif de refroidissement (13, 14).
  2. Appareil selon la revendication 1, caractérisé en ce que la zone d'étirage est formée de cinq paires de rouleaux d'étirage (8, 9, 10, 11, 12) successives.
  3. Appareil selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de refroidissement (13, 14) correspond à un refroidissement par liquide.
  4. Appareil selon la revendication 2 à 3, caractérisé en ce qu'un chauffage par l'intermédiaire des dispositifs de chauffage des quatre premières paires de rouleaux d'étirage (8, 9, 10, 11) est prévu de telle manière que la température de surface des rouleaux de la première paire de rouleaux d'étirage (8) est comprise entre 40 et 90 °C, celle de la deuxième paire de rouleaux d'étirage (9) est comprise entre 80 et 170 °C, celle de la troisième paire de rouleaux d'étirage (10) est comprise entre 120 et 280 °C et celle de la quatrième paire de rouleaux d'étirage (11) est comprise entre 120 et 250 °C.
  5. Appareil selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'un étirage total compris entre 5 et 7 fois est prévu dans la zone d'étirage.
  6. Appareil selon l'une quelconque des revendications 2 à 5, caractérisé en ce que l'étirage entre la paire de rouleaux d'entrée (7) et la première paire de rouleaux d'étirage (8) est compris entre 1,02 et 1,1, celui entre la première paire de rouleaux d'étirage (8) et la deuxième paire de rouleaux d'étirage (9) est compris entre 4 et 6, celui entre la deuxième paire de rouleaux d'étirage (9) et la troisième paire de rouleaux d'étirage (10) est compris entre 1,2 et 2,0, celui entre la troisième paire de rouleaux d'étirage (10) et la quatrième paire de rouleaux d'étirage (11) est compris entre 0,7 et 1,2 et celui entre la quatrième paire de rouleaux d'étirage (11) et la cinquième paire de rouleaux d'étirage (12) est compris entre 0,7 et 1,2.
  7. Procédé de production d'un fil sans fin (5) à partir d'une masse fondue de polymère synthétique, caractérisé par les étapes de procédé suivantes consistant à :
    a) extruder des brins formant filament (3) d'une masse fondue de polymère,
    b) refroidir et rassembler les brins formant filament (3) pour fournir un fil (5),
    c) appliquer une préparation de filage (4) sur le fil,
    d) étirer le fil (5) avec plusieurs paires de rouleaux d'étirage (8, 9, 10, 11) successives, et
    e) bobiner le fil (5),
    caractérisé en ce que
    pour obtenir une résistance supérieure à 85 cN/tex du fil (5) pour un allongement inférieur à 12 %, le fil (5) est étiré avec un étirage total compris entre 3 et 8 via un rouleau d'entrée (7) et quatre à six paires de rouleaux d'étirage (8 , 9, 10, 11, 12) successives, dans lequel les premières paires de rouleaux d'étirage (8, 9, 10, 11) sont chauffées et les deux rouleaux de la dernière paire de rouleaux d'étirage (12) sont refroidis à une température inférieure à 100 °C, de manière préférée inférieure à 60 °C, et le fil (5) est guidé plusieurs fois autour de la dernière paire de rouleaux d'étirage (12).
EP12743649.1A 2011-07-25 2012-07-23 Procédé et installation de fabrication d'un fil sans fin Active EP2737113B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH01239/11A CH705305B1 (de) 2011-07-25 2011-07-25 Vorrichtung und Verfahren zur Herstellung eines endlosen Fadens aus einer synthetischen Polymerschmelze.
PCT/CH2012/000172 WO2013013331A1 (fr) 2011-07-25 2012-07-23 Procédé et installation de fabrication d'un fil sans fin

Publications (2)

Publication Number Publication Date
EP2737113A1 EP2737113A1 (fr) 2014-06-04
EP2737113B1 true EP2737113B1 (fr) 2019-12-25

Family

ID=46633951

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12743649.1A Active EP2737113B1 (fr) 2011-07-25 2012-07-23 Procédé et installation de fabrication d'un fil sans fin

Country Status (6)

Country Link
EP (1) EP2737113B1 (fr)
JP (1) JP5984928B2 (fr)
CN (1) CN103842564B (fr)
CH (1) CH705305B1 (fr)
ES (1) ES2774287T3 (fr)
WO (1) WO2013013331A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104264246B (zh) * 2014-09-28 2016-03-02 浙江古纤道新材料股份有限公司 七对辊纺丝装置及采用该装置生产涤纶工业丝的工艺
CN105887221A (zh) * 2014-10-31 2016-08-24 陈路 一种用于制造ptfe缝纫线的多辊牵伸装置
CN113957551B (zh) * 2021-11-19 2022-12-02 平顶山神马帘子布发展有限公司 一种高强高模量锦纶66工业用长丝生产方法

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JPH05156513A (ja) * 1991-12-04 1993-06-22 Asahi Chem Ind Co Ltd 高強度ポリアミド繊維及びその製造方法
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Also Published As

Publication number Publication date
CH705305B1 (de) 2015-06-30
EP2737113A1 (fr) 2014-06-04
CN103842564B (zh) 2017-05-17
WO2013013331A1 (fr) 2013-01-31
CN103842564A (zh) 2014-06-04
JP2014523493A (ja) 2014-09-11
JP5984928B2 (ja) 2016-09-06
ES2774287T3 (es) 2020-07-20
CH705305A1 (de) 2013-01-31

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