EP1055750A1 - Dispositif et procédé pour l'entrelacement, relaxation et/ou fixation du retrait thermique de fils continus dans un procédé de filage à fusion et fils continus ainsi obtenus - Google Patents

Dispositif et procédé pour l'entrelacement, relaxation et/ou fixation du retrait thermique de fils continus dans un procédé de filage à fusion et fils continus ainsi obtenus Download PDF

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Publication number
EP1055750A1
EP1055750A1 EP00110809A EP00110809A EP1055750A1 EP 1055750 A1 EP1055750 A1 EP 1055750A1 EP 00110809 A EP00110809 A EP 00110809A EP 00110809 A EP00110809 A EP 00110809A EP 1055750 A1 EP1055750 A1 EP 1055750A1
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EP
European Patent Office
Prior art keywords
yarn
treatment chamber
section
gas
inlet
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Withdrawn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
EP00110809A
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German (de)
English (en)
Inventor
Ulrich Kemp
Marcel Ruppenthal
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.)
Uhde Inventa Fischer AG
Original Assignee
Inventa Fischer 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
Priority claimed from DE2000115454 external-priority patent/DE10015454C2/de
Application filed by Inventa Fischer AG filed Critical Inventa Fischer AG
Publication of EP1055750A1 publication Critical patent/EP1055750A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • D02J11/00—Combinations, not covered by any one of the preceding groups, of processes provided for in such groups; Plant for carrying-out such combinations of processes
    • 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
    • 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
    • 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 present invention relates to a device for swirling, relaxation and / or for thermal shrink fixation of filament yarn in one Melt spinning process and corresponding processes.
  • Melt spinning filament yarns become a melt spinnable polymer melted and in this state through fine nozzle holes one Nozzle plate pressed out. This creates several strands of melt through Cooling solidified in an air stream and over several roles with increasing Surface speed can be drawn out to fine filaments. This are then combined into a single thread and finally as Coils wound.
  • the filaments are pulled out as long as they are not yet complete solidified and the polymer has not yet fully crystallized, and so far is somewhat flowable in the area of the cooling section before the first pull-off roller.
  • the filaments are made according to their Solidification usually also mechanically using godets stretched, thereby in particular orienting the macromolecules of the Polymers achieved and the final stretch and strength values of the yarn can be set.
  • the relationship between spinning and mechanical stretching stand depends on the spinning speed.
  • the lower the Spinning speed the higher the degree of mechanical required Drawing to obtain so-called fully stretched yarn.
  • the stretching factor can be up to 1: 4.
  • For deep to medium Working speeds (depending on the polymer used e.g. up to about 50 m / s) it may therefore be necessary to remove the filaments in the area of the stretching zone heat up to a temperature above the glass transition point second Order to facilitate stretching.
  • the Stretching factor is much smaller and is typically only about 1: 1.3, which means such additional heat treatment can be dispensed with.
  • every filament yarn tends to shorten further when it is after its production higher temperatures of, for example, 100 ° C or more is exposed.
  • This tendency to contract length depends on Heat treatment as a cooking shrink (water 95 ° C - 100 ° C) or Hot air shrinkage (hot air 160 ° C - 200 ° C), whereby from the processing industry only yarn is tolerated, its shrinkage values are within certain limits, e.g. Cook shrinkage between 6% and 11%.
  • This so-called thermal shrinkage can also be reduced by a Heat treatment of the yarn after drawing, which in the following as Thermal shrink fixation is called. In comparison with the relaxation is however, reaching a higher temperature and / or a longer one Duration of treatment required.
  • the filaments are often still provided with a thread-closing agent and / or swirled, the swirling usually as the last step before winding, but at least after stretching is carried out.
  • the so-called pre-vortexing must be distinguished from this stretching. This treatment only serves to even out the Spin preparation on the thread and a certain cohesion of the filaments in order so separating and breaking individual filaments in the subsequent one Prevent stretching. Most of the pre-vortexing introduced is removed again by the stretching process.
  • the prior art includes methods and devices for swirling, Relaxation and thermal shrink fixation known, but this is not or at least not effective for all three types of treatment at the same time or can be used at least alternatively and, in addition, either apparatus elaborately designed and / or through a high consumption of energy or Treatment gas are marked.
  • the device according to the invention comprises a treatment chamber, which with a gas under essentially static pressure and elevated temperature is fillable and an inlet and an outlet for the implementation of the Has yarn, which is permeable to the gas under pressure relief, by which the gas under pressure relief in or against the direction of the Yarn can flow out
  • the device according to the invention in particular comprises no nozzle more, through which a jet of the treatment gas is directed onto the yarn Whirling is essentially directed transversely to its direction of travel. Rather, the device according to the invention results in a swirling of the Yarns or its filaments when passing through the entry and / or the Exit opening of the treatment chamber through the through these openings below Pressure relief in or against the direction of the yarn escaping gas.
  • the intermingling of the yarn is also very gentle.
  • the yarn shows therefore less damage to its surface and less damage Yarn / ceramic coefficients of friction based on conventionally produced yarn. Because of this, this is Yarn can be used with advantage in the further processing stages.
  • the one with the Interlacing or thread closure produced by the device according to the invention extraordinarily stable. This is the decrease in the number of knots per unit length with increasing tension at least up to a specific thread tension of 0.5 cN / dtex at least one order of magnitude (power of ten) less than for otherwise comparable filament yarns according to the prior art.
  • the Specific thread tension of 0.5 cN / detx mentioned corresponds approximately to the load, such as occurs when a weft is inserted in a loom and thus one Stress that a thread usually experiences at most in practice.
  • the subject of the present invention is also a swirled one Filament yarn, in which as a characteristic feature according to claim 16 the number of knots per unit length up to a specific thread tension of 0.5 cN / dtex by no more than 50%, but especially no more than 30% decreases.
  • the yarn is beneficial all the way through the Treatment chamber exposed to this pressure as well as this temperature, from where on the one hand an improved relaxation results.
  • this also means the working window significantly expanded because even at low pressures in the Treatment chamber sufficient relaxation is possible.
  • the Thermal shrink fixation has a favorable dependence on the applied one Pressure as well as the duration of treatment shown, so that a desired shrinkage is even specifically adjustable.
  • the inlet and / or the outlet opening of the treatment chamber are preferred as the yarn tightly enclosing nozzles, the In contrast, the treatment chamber has a much larger cross section having. This facilitates the formation of a largely static overpressure in the treatment chamber and also reduces the leakage of treatment gas what has a favorable effect on its consumption. This can be compared to e.g. conventional swirl nozzles can be reduced to only about 1/3 to 1/4 This does not affect turbulence, on the contrary supported.
  • the cross section of the inlet and / or outlet opening is further preferred rectangular, causing the filaments of the yarn to pass through the Treatment chamber pulled apart into a flat band, in this They offer a larger surface area and shape to the gas in the treatment chamber are heated by this more effectively.
  • the expansion of the treatment chamber between its inlet and its outlet opening essential is larger than their width perpendicular (mostly horizontal) to it.
  • the treatment chamber has a Supply opening for the treatment gas, the cross section of which is essential is larger than the cross section of its inlet and / or its outlet opening. This ensures that the gas is not already flowing into the Treatment chamber, like that of the conventional swirl chambers the case is relaxed and as a jet at high speed on the yarn hits. Rather, there will be an even flooding of the treatment chamber and the formation of a largely static pressure is achieved in this. The pressure In this respect, the treatment gas essentially only relaxes when this flows out through the inlet and / or outlet opening.
  • the treatment chamber is apart of their inlet, their outlet opening and the feed opening for the Treatment gas should be completed as completely as possible.
  • the device according to the invention is advantageously used in one Melt spinning plant with a spinning delay and / or Pre-stretching section and a winding device for the yarn between these two positions. Especially at higher spinning speeds in the Range from 75 m / s, it is preferred here if there is none in the drawing section Means for heating the yarn are provided because of the effectiveness of the Device according to the invention, in particular with regard to the relaxation effect as well as the heat shrink fixation without such preheating of the yarn is higher.
  • the device according to the invention can also be used in the system mentioned immediately before the winding station, i.e. that no more Treatment of the yarn is more necessary and this via an additional one Running time also no extra time for a possible further shortening must be granted.
  • the device according to the invention is preferably operated with a steam, in particular with steam as the treatment gas, it being for one Absolute pressure should be designed up to about 10 bar.
  • the device according to the invention can be used for the entire titer range use, i.e. from microfilament yarns to light titers to texture yarns, especially BCF yarn (carpet yarn), and technical yarn.
  • melt spinning plant of FIG. 1 a conventional one is used first Melt extruder (not shown here) melt-spinnable polymer suitable relative viscosity melted and the nozzle package 10 with the Spinneret plate 11 fed.
  • the molten polymer is replaced by the Spinneret corresponding to the number of holes in the spinneret plate 11 in as many individual melt streams 20 pressed out by means of an air-conditioned air stream (Arrow) cooled in a cooling device by means of a spin finish applicator 30 bundled and then passed through a vortex 40.
  • the yarn turns 50 then a first pair of driven, unheated godets 60 which are wrapped several times, deducted at a defined speed.
  • second pair of godets 70 also wrapped several times and also unheated, stretches the yarn by running a certain amount faster.
  • the Godets are preferably more defined with smooth, ceramic surfaces provided with low roughness.
  • the yarn After leaving the second pair of godets 70, the yarn passes through one Steam treatment chamber 80 and is then replaced by a commercially available Winder 90 is wound at a speed around that in chamber 80 occurring relaxation shrinkage is smaller than the peripheral speed of the last pair of godets 70.
  • the structure of the steam treatment chamber is shown in FIG. 2. It has one, except an inlet and an outlet opening for the yarn 50 to the outside practically closed, elongated treatment room 81, which over a Connection piece or a feed opening 82 with the treatment gas from precisely defined pressure is supplied.
  • the cross section with which the Connection piece 82 opens into the treatment room is recognizably large, so that there is no significant pressure drop in this area and the Treatment room 81 has essentially the same, quasi-static pressure, as it also prevails in the feed line or in the connecting piece 82.
  • Thread guide members 85 and 86 guide the yarn 50 exactly in the axis of the aligned openings 83 and 84 through the Chamber 81.
  • a front cover can be used to insert the running yarn 50 87 of the chamber 81 can be removed.
  • FIG. 3 shows under a) and b) for comparison the basic design of two conventional swirling nozzles according to the prior art, the upper Part of the figure is a vertical section and one in the lower part of the figure Horizontal section is shown.
  • Fig. 3a) shows a nozzle with two gas holes per Thread in open baffle plate technology
  • Fig. 3 b) a construction with threading slot and open yarn inlet and outlet.
  • the angle between the gas holes 88 and the thread can be between 45 ° and 90 °.
  • the conventional chambers so that there is a sharp gas flow at the outlet of the gas bores 88 at all can form, necessarily essentially open, as also in FIG. 3 can be seen. Accordingly, there is in the area of the thread in the essential ambient pressure.
  • FIG. 4 shows the size of the surfaces of these in a representation length versus width Nozzle openings 83/84, which were designed in accordance with the invention
  • Treatment chamber of the type shown in FIG. 2 have proven particularly successful.
  • Compared usual exit surfaces of gas bores 88 are more conventional Swirling nozzles shown in FIG. 3, which are recognizably much larger are.
  • the cross section available for the gas outlet Nozzle openings 83, 84 of the nozzle type Z according to the invention are formed by the Cross-section of the yarn even further reduced.
  • a treatment chamber according to the invention significantly less hot gas required than with conventional technology, which makes the economy of the Swirling process is significantly improved.
  • FIG. 5 shows preferred geometries for the configuration of the nozzle openings 83 and 84, with different geometries for the inlet nozzle 83 and the outlet nozzle 84 are possible and various effects can be achieved as a result. So can for example by using nozzle shapes according to FIG. 5 d) at the inlet and at the outlet a very good seal of the chamber with only a very small one Gas consumption can be achieved. A combination of nozzle shape a) at the inlet and c) at the outlet there is a good yarn conveying effect and a favorable thread tension at the entrance and exit of the chamber.
  • Example b) at the inlet and Example c) a high swirl effect can be seen at the outlet Pre-swirling in the inlet opening and final swirling in the outlet nozzle achieve.
  • Example c) a high swirl effect can be seen at the outlet Pre-swirling in the inlet opening and final swirling in the outlet nozzle achieve.
  • the cross section of the inlet and / or outlet opening or nozzle is preferably between 0.1 mm 2 and 1 mm 2 .
  • the nozzle openings are preferably also rectangular, with an aspect ratio preferably between 1: 5 and 1:10 with a length between preferably 0.5 mm and 2.5 mm and a width between preferably 0. 2 and 0.5 mm.
  • the treatment chamber 81 has a substantially larger cross section, preferably between 10 mm 2 and 30 mm 2 .
  • Their extension between their inlet 83 and their outlet opening 84 is again substantially larger than their width perpendicular to it and is preferably between 30 mm and 150 mm.
  • the cross section of the feed opening 82 is preferably between 100 mm 2 and 200 mm 2 .
  • Examples 1 to 5 and 8 are working in the known manner below Use of a commercially available treatment chamber or swirling nozzle with the designation O, as is usually used for use with compressed air, in these examples was operated with steam. This corresponds approximately that shown in Fig. 3b).
  • Example 6 uses one specifically for working with a hot gas medium suitable treatment chamber (nozzle) marked G, also in known construction similar to that of Fig. 3a). It will also be a Stretching performed with cold godets. The result is a stable one Coil structure.
  • the steam consumption is according to the specified Nozzle opening is relatively high, the thermal shrinkage is only affected insignificantly possible (see FIG. 6 explained below). That on this Art-made yarn is also known under the term "H4S".
  • the structure corresponds to that of example 6, but in the stretching field there is also a steam treatment nozzle between the cold godet duos used.
  • the treatment length in the steam nozzle is 49 mm, the pressure 1.5 bar (g).
  • the same swirl nozzle (G) is used for relaxation Steam operated as in Example 6.
  • This procedure corresponds to basically that of the type mentioned in US Pat. No. 5,750,215 is described.
  • the yarn produced in this way could not be made into larger bobbins wind up because it shrunk further on the winding tube, crushed it and Removing the bobbin from the bobbin holder made it impossible.
  • the yarn was in the stretching zone already undergoes heat treatment near the relaxation heating experienced, so that in the subsequent relaxation treatment not sufficient Relaxation occurs more and the thread contracts on the sleeve, creating yarn and sleeve are damaged. Small amounts of yarn could go after this How it works, however, and the uniformity of the stretching force (CV in %), which resulted in 2.5%. The comparison resulted in this size without steam stretching a value of 1.7%.
  • Examples 9 to 18 are working methods according to the inventive concept below Use of a treatment chamber with the designation Z approximately according to FIG. 2. With the chamber according to the invention, the yarn is during the specified time treated at the specified gas pressure, i.e. under excess pressure. That so treated yarn is wound up under a defined thread tension.
  • This Yarn produced according to the invention was given the designation "H5S”.
  • the yarn of Examples 3, 6, 8, 11, 12 was also inserted as a weft in a chain made of PET Voile transparent trilobal 22 dtex f 1 using a projectile loom.
  • the following assessment of the weaving properties of the yarn resulted: example Titer (dtex) Winding speed (m / min) Steam treatment nozzle Air pressure (bar) Thread breaks per 600 m Thread closure (visually assessed) Cf. 3rd 110 f 24 5007 O 3.8 10th too open Cf. 6 55 f 48 5003 G 3.5 3rd satisfying 12th 55 f 48 5008 Z. 2.9 1 good thread closure Cf. 8th 55 f 48 4998 O 2.8 2nd satisfying 11 110 f 24 5003 Z. 2.4 0 very good
  • the treatment medium used in the examples described is Steam.
  • the way of working is not limited to water vapor, Compressed air is also suitable, whereby the influence on the thermal shrinkage is due to the poorer heat transfer value is somewhat lower.
  • the device according to the invention is also a pure swirling device applicable, with the advantage of saving energy compared to the state of the Technology through lower compressed air consumption.
  • Fig. 7 shows in a diagram the stability of the swirl or Thread closure (so-called entanglement stability or knot strength) for a Yarn "H5S" produced according to the invention.
  • entanglement stability or knot strength for a Yarn "H5S” produced according to the invention.
  • FIG. 7 shows the "relative swirl” in% of the swirl at only low specific thread tension against this specific thread tension in cN / dtex (Centinewton / decitex).
  • the ones entered in FIG. 7 were determined Measured values with a product sold under the name "Itemat Lab TSI” Vortex measurement device from Akzo Nobel Faser AG (Enka division technica), D-Heinsberg. With this device, the The number of swirl nodes per unit length is initially only small Determine thread tension and then immediately with increased thread tension.
  • the yarn "H5S" according to the invention shows in an unexpected way a practical Constantly high number of knots up to a specific thread tension of 0.5 cN / dtex.
  • the number of nodes is only reduced by about 10% in the area shown.
  • Yarns according to the invention thus show one Decrease by no more than 50%, in particular by no more than 30% in the number of knots per unit length to a specific one Thread tension of 0.5 cN / dtex.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Inorganic Fibers (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
EP00110809A 1999-05-28 2000-05-22 Dispositif et procédé pour l'entrelacement, relaxation et/ou fixation du retrait thermique de fils continus dans un procédé de filage à fusion et fils continus ainsi obtenus Withdrawn EP1055750A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19924436 1999-05-28
DE19924436 1999-05-28
DE2000115454 DE10015454C2 (de) 1999-05-28 2000-03-29 Vorrichtung zur Verwirbelung, Relaxierung und/oder zur Thermoschrumpf-Fixierung von Filamentgarn in einem Schmelzspinnprozess sowie entsprechende Verfahren und damit hergestelltes Filamentgarn
DE10015454 2000-03-29

Publications (1)

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EP1055750A1 true EP1055750A1 (fr) 2000-11-29

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EP00110809A Withdrawn EP1055750A1 (fr) 1999-05-28 2000-05-22 Dispositif et procédé pour l'entrelacement, relaxation et/ou fixation du retrait thermique de fils continus dans un procédé de filage à fusion et fils continus ainsi obtenus

Country Status (8)

Country Link
US (1) US6543105B1 (fr)
EP (1) EP1055750A1 (fr)
JP (1) JP2001032143A (fr)
KR (1) KR20010049438A (fr)
CN (1) CN1275640A (fr)
ID (1) ID26150A (fr)
TR (1) TR200001510A3 (fr)
TW (1) TW584680B (fr)

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US6868662B2 (en) * 2002-11-14 2005-03-22 Invista North America S.A.R.L. Entangled bicomponent yarn and process to make the same
CN100339520C (zh) * 2002-12-24 2007-09-26 花王株式会社 热熔融粘合性复合纤维
ITBI20040004A1 (it) * 2004-10-12 2005-01-12 Sinterama S P A Dispositivo ad elevato rendimento per l'interlacciatura ad aria di un filo, e relativo metodo
CN101057013B (zh) * 2004-12-01 2010-11-10 欧瑞康纺织有限及两合公司 用于引导和涡流变形复丝丝线的方法和设备
EP1844186B1 (fr) * 2005-02-04 2010-07-28 Oerlikon Textile GmbH & Co. KG Procede et dispositif pour produire un fil composite frise
TWI313310B (en) * 2005-03-20 2009-08-11 Oerlikon Heberlein Temco Wattwil A Process and entangling nozzle for the production of knotted yarn
JP5091317B2 (ja) * 2007-07-25 2012-12-05 エーリコン テクスタイル コンポーネンツ ゲゼルシャフト ミット ベシュレンクテル ハフツング マルチフィラメント糸を処理する装置
CN103849972A (zh) * 2012-12-04 2014-06-11 江苏远洲纤维科技有限公司 新型主网络器
EP3358052B1 (fr) * 2017-02-01 2020-05-27 Oerlikon Textile GmbH & Co. KG Dispositif permettant l'entrelacement d'une pluralité de filaments individuels d'un fil composite
CN107574524A (zh) * 2017-09-29 2018-01-12 长青藤高性能纤维材料有限公司 一种用于超高分子量聚乙烯纤维网络丝的喷嘴组件
CN107938232B (zh) * 2017-10-26 2019-11-29 浙江理工大学 一种拉幅热定型机烘箱结构
CN116377631B (zh) * 2023-06-05 2023-08-29 江苏德力化纤有限公司 一种微细纤细旦涤纶长丝的制备方法

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CH623611A5 (en) * 1979-07-18 1981-06-15 Inventa Ag Process for continuous production of drawn nylon 6 filament yarns from nylon 6 melts

Also Published As

Publication number Publication date
KR20010049438A (ko) 2001-06-15
TW584680B (en) 2004-04-21
TR200001510A2 (tr) 2000-12-21
TR200001510A3 (tr) 2000-12-21
ID26150A (id) 2000-11-30
US6543105B1 (en) 2003-04-08
CN1275640A (zh) 2000-12-06
JP2001032143A (ja) 2001-02-06

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