EP0579082A1 - Méthode pour le traitement thermique de fils en mouvement et dispositif pour effectuer ce traitement - Google Patents

Méthode pour le traitement thermique de fils en mouvement et dispositif pour effectuer ce traitement Download PDF

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Publication number
EP0579082A1
EP0579082A1 EP93110711A EP93110711A EP0579082A1 EP 0579082 A1 EP0579082 A1 EP 0579082A1 EP 93110711 A EP93110711 A EP 93110711A EP 93110711 A EP93110711 A EP 93110711A EP 0579082 A1 EP0579082 A1 EP 0579082A1
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EP
European Patent Office
Prior art keywords
yarn
heat transfer
transfer gas
heating
thread
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Granted
Application number
EP93110711A
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German (de)
English (en)
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EP0579082B1 (fr
Inventor
Ingolf Dr. Jacob
Josef Geirhos
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Invista Technologies SARL Switzerland
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Hoechst AG
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Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/16—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam
    • D02G1/165—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam characterised by the use of certain filaments or yarns
    • 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
    • D02J13/001—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass in a tube or vessel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
    • F28C3/00—Other direct-contact heat-exchange apparatus
    • F28C3/005—Other direct-contact heat-exchange apparatus one heat-exchange medium being a solid

Definitions

  • the present invention relates to a new method by means of which high-speed yarns can be heated quickly, gently and uniformly over the cross section to a desired elevated temperature, and to a particularly adapted device for carrying out the method.
  • the speed of heat transfer essentially depends on the temperature gradient between the heat supplier and the object to be heated. In order to achieve the fastest possible heat transfer, the highest possible overtemperature of the heating medium is chosen. Too high an excess temperature leads to overheating of parts of the yarn bundle, such as single filaments or loops hanging out. The demands for the fastest possible and at the same time gentle treatment are therefore contrary.
  • a heating chamber for running yarns is known from EP-A-114,298, in which the yarns are treated with saturated water vapor of more than 2 bar.
  • the heating chamber is characterized by a special type of sealing of the thread entry and exit, with which a good sealing effect is achieved, which allows simple threading and with which the operating state can be set quickly after threading.
  • the heat transfer takes place primarily through condensation of the saturated steam on the yarn in the heating chamber, as a result of which a high uniformity of the treatment temperature is achieved.
  • the yarn emerging from the heating chamber therefore generally contains condensed water which evaporates again in the subsequent steps.
  • the treatment temperature in this heating chamber cannot be varied easily since it corresponds to the temperature of the saturated steam.
  • a heating device for a crimping machine is known from EP-A-193,891.
  • This device has a thread guide tube which is heated on its outer circumference and which is arranged vertically or obliquely.
  • an air nozzle is placed on the yarn inlet side of the thread guide tube through which fresh air is blown into the thread guide tube.
  • This device is intended to make the heat treatment more effective. The actual heating of the fresh air takes place only in the heating device itself. With this heating device, no heat treatment can be carried out at constant temperatures be made because the air in the thread guide tube has an undefined temperature.
  • DE-A-2,927,032 discloses a device for texturing yarns, in which these are heated directly in thread channels through which warm air flows.
  • the thread channels are fed with the warm air and are connected to a suction pipe.
  • the device is characterized by a special arrangement of the supply and discharge lines for the hot air and the heating device for the hot air; Furthermore, inlet and outlet connections are provided on the thread channels for the supply and removal of the yarns. With the arrangement described, an accurate temperature control and a large temperature equality within the device is to be achieved.
  • the yarns are directly surrounded by an even flow of hot air, which results in an even heating of the yarns at constant temperature and air speed.
  • the device requires the used hot air to be drawn off via a separate suction pipe.
  • a device for texturing yarns in which a heating device is provided in which warm air heats a running yarn in a thread channel.
  • the device is characterized by the special type of air guidance in the thread channel, which in each case has a flow line between at least two return lines for the warm air.
  • the device is intended to achieve the lowest possible temperature drop in the thread channel between its inlet and outlet. Similar to an injector nozzle, the yarn is hit at one point by the hot air and then the yarn and air move together or in opposite directions, the air losing temperature.
  • thermoplastic yarn From GB-A-1,216,519 a method for heating a thermoplastic yarn is known, using a device designed as a contact heater. In this method, a continuously moving yarn is passed through a thread channel designed as a capillary.
  • the inner diameter of the thread channel is chosen so that it cannot find free movement within this channel, but a sealing effect results due to the capillary nature of the thread channel.
  • a pressurized heating fluid for example air, superheated steam or saturated steam, is introduced so that it can move along the direction of yarn together with the yarn through the heating channel and plasticize the yarn by contact. Due to the construction of this device, it can be assumed that a strong temperature gradient builds up along the yarn running direction in the thread running channel and that, due to the small amounts of heating fluid in the capillary of the thread channel, a temperature of the heating fluid must be used which is far above the desired yarn temperature.
  • the method involves the contactless movement of a surface-moistened and high-twisted yarn through a heating device that contains hot air.
  • the false twist is fixed using a high relative movement between the hot air and the moving yarn.
  • the process is designed so that a high temperature gradient is formed between the hot air and the yarn; The moistening of the surface then serves the purpose of protecting the yarn from thermal damage.
  • a device for the heat treatment of relaxed synthetic yarns in which a yarn is passed through a hollow heating cylinder.
  • an injector which is operated with a primary gas stream from heating gas and which is designed as an annular nozzle, and an additional inlet for a secondary gas stream.
  • the device is characterized in that the additional inlet for the secondary gas flow is arranged in such a way that this flow, viewed in the direction of movement of the yarn, behind the injector opening in the heating cylinder with the primary gas flow meets.
  • thermoplastic yarn From DE-A-2,347,139 a method for texturing thermoplastic yarn is known, which involves fixing the twisted yarn by means of hot steam which is passed through the heating device at the speed of sound.
  • the heating medium is also supplied here at the yarn inlet point of the heating device by means of an annular nozzle.
  • the process is characterized by high productivity.
  • the yarn is heated by contact with a comparatively small mass of the turbulent, fast-flowing steam, which steam has a higher temperature than the desired end temperature of the running yarn.
  • a yarn heater with a heated yarn run is known from DE-A-3,344,215.
  • This heater is characterized in that it contains means by which a heated medium in the area of the yarn inlet strikes a yarn moving along this yarn path.
  • the heating medium is also supplied here by means of an annular nozzle. With the heater, the heating output is to be increased, so that shorter heaters can be used than previously customary. Details of the temperature profile in the thread channel cannot be found in this publication.
  • the object of the present invention was to provide a simple method for the heat treatment of free-running yarns, with which gentle and as uniform as possible heating of the yarns is possible.
  • the yarn is blown over a certain length with a uniformly heated heat transfer gas, so that the heat transfer process takes place more by movement of the heat transfer gas (convection) than by heat transfer by means of a temperature gradient.
  • the adhering air boundary layer which counteracts the heat transfer due to its insulating effect, is blown away over a longer yarn path and the heated heat transfer gas can release its heat quickly and evenly to the yarn.
  • the temperature of the heat transfer gas only needs to be a little above the yarn temperature, because most of the heat is transported by convective air movement and only a small part by temperature differences. This convective type of heat transfer is very efficient and overheating of the yarn material is avoided, so that gentle and uniform heating is achieved.
  • yarn is understood to mean all endless threads, that is to say both multifilament yarns and staple fiber yarns or monofilaments.
  • yarn titres of 50 to 2500 dtex are customary, preferably yarn titres of 50 to 300 dtex (for textile areas of application) ) and 200 to 2000 dtex (for technical applications).
  • the method according to the invention is not subject to any restrictions.
  • Both yarns made of inorganic material, for example glass, carbon or metal yarns, and yarns made of organic material, for example yarns based on aliphatic or aromatic polyamide, polyester, in particular polyethylene terephthalate, or polyacrylonitrile can be used.
  • the running yarn is passed through the heating device by applying a voltage.
  • This voltage can be varied within a wide range in order, for. B. set a desired shrinkage or elongation behavior of the yarn.
  • the voltage should be chosen so that a contactless running of the yarn in the thread channel results and that there is no or only an insignificant orienting stretching or that the yarn shrinks.
  • any gases which are inert to the yarn to be heated under the respective treatment conditions can be used as the heat transfer gas.
  • gases are nitrogen, argon or, in particular, air.
  • the gases can also contain additives, for example a certain moisture content; however, the moisture content must not be so high that a significant condensation takes place on the yarn in the heating device.
  • high-speed usually means speeds of more than 300 m / min, preferably 400 to 6000 m / min, in particular 400 to 3000 m / min; this information relates to the speed of the yarn as it exits the heating device.
  • the heat transfer gas can be preheated in any conventional way; for example by contact with a heat exchanger, passing through heated pipes or by direct heating via heating coils.
  • the temperature of the preheated heat transfer gas is above the yarn temperature desired in the individual case; the heat transfer gas is preferably heated to temperatures up to 20 ° C. and care is taken to ensure that there is no appreciable drop in temperature between the preheating and the actual heating of the yarn.
  • the heated heat transfer gas can be introduced into the thread running channel at any point.
  • the heat transfer gas is fed to the thread run channel in such a way that it can come into contact with the yarn along the entire thread run channel.
  • the length of the blowing zone is preferably more than 6 cm, especially 6 to 200 cm.
  • the length of the blowing zone is preferably 6 to 20 cm.
  • the length of the blowing zone is preferably 6 to 120 cm, in particular 6 to 60 cm.
  • the heat transfer gas is preferably conducted into the thread running channel perpendicularly to the direction of yarn travel, the heat transfer gas being entrained on the one hand by the running yarn and leaving the heating device together with the running yarn via the yarn exit opening, and on the other hand moving against the yarn travel direction and leaving the heating device via the yarn entry opening.
  • the heat transfer gas is blown from small openings perpendicular to the yarn in the central part of the yarn guide channel over a length of about 1/4 to 1/2 of the channel length and escapes in and against the yarn direction from the yarn guide channel.
  • cross-blowing with suction on the opposite side takes place.
  • the contacting of the heat transfer gas in the heating device with the running yarn has to take place under such conditions that the yarn inside the heating device heats up to the desired elevated temperature and the heat transfer gas in the heating device cools down very little.
  • the temperature of the heat transfer gas in the heating device generally changes only insignificantly under the operating conditions, i.e. this gas does not undergo any appreciable change in temperature when it passes through the heating device. This can be achieved by suitable insulation of the gas-carrying parts of the device.
  • a particular advantage is that the temperature control described above can ignore the heat losses between the heating device and the yarn, because the heating device is controlled according to the temperature close to the yarn. As a result, the expensive wall heating in the air duct between the heating device and the yarn can be avoided. Even fluctuations in the insulation effect from place to place can be compensated for by this type of regulation.
  • the method according to the invention is suitable, for example, for heating textured yarns, in particular airblast textured yarns and for heating high-modulus yarns before these yarns are intermingled.
  • the number of loops per unit length decreases due to the relatively strong shrinking and melting effect. Melted capillaries become brittle and this can occur during further processing, e.g. when sewing, cause excessive abrasion. Fixing the compact yarn at higher speeds while maintaining the number of loops is therefore only possible to a limited extent with these methods. Even in the case of non-contact heat treatment of the yarn, for example in a heating tube, the walls must be significantly overheated in order to achieve the desired fixing temperature in the compact yarn by sufficient heat transfer. Essentially the same effects and disadvantages occur that have been described above for contact heating.
  • a particularly great advantage is that the hot gas only has to be heated slightly above the fixing temperature, since the heat transfer does not only depend on the temperature gradient, but is essentially determined by the flowing hot gas. The only slight overheating of the hot gas prevents premature melting of the protruding capillary ends or loops, so that the fixing temperature in the compact yarn is reached without the heat-sensitive capillary ends or loops being impaired too much.
  • the melting temperature of the protruding capillary ends or loops should be selected as the upper limit of the temperature of the hot gas. In the case of yarns based on polyethylene terephthalate, this upper limit is approximately 270 ° C.
  • the invention also relates to such a method as defined in claim 10.
  • the method is particularly advantageous for the production of sewing threads.
  • Preferred embodiments of this variant of the method according to the invention are characterized in that the roving strands have different total and single filament titer and the roving strands consist of high-strength, low-shrinkage and low-elongation filaments, in particular of filaments drawn by the method according to the invention.
  • a further preferred embodiment of this variant of the process according to the invention is characterized in that stand-up and effect filaments made of polyester, in particular of polyethylene terephthalate or polyethylene terephthalate copolymers, are obtained in that the roving strands are obtained by stretching a partially oriented spun fabric and an immediately following, essentially shrink-free heat treatment and that immediately after this heat treatment of the texturing nozzle the upright filaments are fed with an advance of 3 to 10% and the effect filaments with an advance of 10 to 60%.
  • the roving strands are usually drawn at 70 to 100 ° C. under 10 to 330 cN / tex, based on the drawn titer.
  • the fixing temperature in the production of a two-component loop sewing thread is usually 200 to 320 ° C., preferably 220 to 240 ° C., so that the heat transfer gas is heated to this temperature in step c).
  • the residence time VZ (in seconds) of the yarns to be fixed in the heating device is preferably selected so that a clear structural change in the fixed yarns is obtained.
  • FW is preferably greater than or equal to 22.5, in particular 25 to 300.
  • the individual titer of the standing filaments is usually 1.2 to 8 dtex and the individual titer of the effect filaments is usually 1 to 4.5 dtex.
  • the total titer of the two-component loop sewing thread is usually 200 to 900 dtex.
  • two-component loop sewing threads with high strength and low shrinkage can be produced; especially types with a final strength of more than 40 cN / tex, a thermal shrinkage at 180 ° C of less than 8% and a maximum tensile strength elongation of less than 18%.
  • Another object of the present invention is a particularly adapted device for performing the method according to the invention.
  • the length of the thread running channel is usually 10 to 200 cm, preferably 10 to 15 cm or 70 to 160 cm.
  • the diameter of the thread running channel is usually 4 to 25 mm, preferably 5 to 15 mm.
  • thread running channels (3) can be combined in one unit and supplied with the heat transfer gas (12) via one or more supply lines (4).
  • Figures 1 and 2 each show a device according to the invention by way of example in longitudinal section.
  • a fixing or drawing device is shown schematically in Figure 1, in which a yarn (1) is fed to a heating device (14) via a pair of delivery godets (9) and is removed via a pair of extraction godets (10), which can also serve as a pair of fixing godets.
  • the heating device (14) consists of a thread run channel (3) which is formed by a tube (7).
  • a heated heat transfer gas (12) for example heated air, which has been heated to the desired temperature in a preheating device (2), for example with a heating coil, hits this tube (7) vertically and via a feed line (4) through the mouth ( 5) enters a distribution chamber (13).
  • the tube (7) has a plurality of bores (6) on its surface along the entire length, through which the heat transfer gas (12) can enter radially from the distributor chamber (13) into the running channel (3).
  • Pressure or temperature of the heat transfer gas in the distribution chamber (13) are monitored by means of the pressure and temperature sensor (11), which is advantageously coupled to the preheating device (2) and the supply unit (not shown) for the heat transfer gas via a controlled system.
  • the heating device (14) is surrounded by insulation (8).
  • FIG. 1 A further embodiment of the heating device (14) according to the invention is shown schematically in FIG.
  • yarn (1), thread runner (3), tube (7), heat transfer gas (12), preheating device (2), feed line (4), its mouth (5), and a distribution chamber (13 ), Bores (6) in the tube (7), pressure and temperature sensor (11) and insulation (8) are shown.
  • the device according to Figure 2 also has inlet or outlet nozzles (15) or (16) at the ends of the thread running channel, which are advantageously made of ceramic material.
  • a suction device (16) is also provided for the heat transfer gas emerging from the thread runner.
  • air is heated in an electrical heat exchanger, for example with a heating coil, to a desired temperature, for example to 250 to 300 ° C.
  • the heated air is introduced through the supply line (4) into the distribution chamber (13), in which it is distributed evenly around the tube (7) and flows through the holes (6) from all sides onto the running yarn (1).
  • the bores (6) usually have a diameter of 1 to 2 mm. After contact with the yarn, the air is deflected in the yarn guide tube (7) and flows out in the yarn running direction and in the opposite direction. This increases the contact time between the yarn and hot air.
  • other openings such as slots, sieves or sintered metal bodies, can also be provided.
  • the bores (6) not only surround the yarn from all sides, but are also distributed along the yarn path.
  • the yarn is blown with tempered air over a certain length, and the air boundary layer adhering in this area, which has already given up its heat content to the yarn, is removed over a greater length and new heated air can take its place.
  • this boundary layer is only removed at one point of the yarn and the air in the immediate vicinity of the yarn cools down by heat transfer to the yarn, so that it is usually necessary to work with considerable excess temperatures of the heat transfer gas in order to achieve a sufficiently rapid heating.
  • a thread guide tube length of about 6 to 20 cm is sufficient for drawing.
  • a thread guide tube length of approximately 70 to 200 cm is expediently used in fixing processes.
  • the viscosity data given in these examples relate to the intrinsic viscosity, measured on solutions of the polyester in o-chlorophenol at 25 ° C.
  • the tenacity and the maximum tensile elongation are determined according to DIN 53834.
  • the shrinkage is triggered by heat treatment in a forced air oven at 200 ° C. and a dwell time of 5 minutes and then measured under a load that corresponds to the weight of 500 meters of the starting yarn.
  • the loop strength is determined according to DIN 53834, part 1.
  • the sewing test is carried out at 5000 stitches / min and 4 stitches / cm, 4 layers being used for the forward seam and 2 layers for the back seam.
  • the spun threads were spun at different spinning take-off speeds and processed into core yarn.
  • the gain in strength of the yarns produced according to the invention is retained in the further processing steps for sewing threads.
  • the sewing results are good. The results are shown in the following table.
  • PET-HMLS yarns produced by the drawing process according to the invention were compared with conventionally produced HMLS yarns (Example 12).
  • the filaments were spun at different spinning take-off speeds. The gain in strength is retained in the further processing stages for sewing threads and the sewing properties are very good.
  • the fixing effect of the method according to the invention is compared with hot air fixing and a heating rail in air-textured sewing threads.
  • the sewing threads are produced by the method known from EP-A-0363792.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
EP93110711A 1992-07-10 1993-07-05 Méthode pour le traitement thermique de fils en mouvement et dispositif pour effectuer ce traitement Revoked EP0579082B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4222721 1992-07-10
DE4222721 1992-07-10

Publications (2)

Publication Number Publication Date
EP0579082A1 true EP0579082A1 (fr) 1994-01-19
EP0579082B1 EP0579082B1 (fr) 1998-08-26

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ID=6462935

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Application Number Title Priority Date Filing Date
EP93110711A Revoked EP0579082B1 (fr) 1992-07-10 1993-07-05 Méthode pour le traitement thermique de fils en mouvement et dispositif pour effectuer ce traitement

Country Status (4)

Country Link
US (1) US5390400A (fr)
EP (1) EP0579082B1 (fr)
JP (1) JPH06313206A (fr)
DE (1) DE59308918D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0664352A1 (fr) * 1994-01-20 1995-07-26 Hoechst Aktiengesellschaft Fil bouclé à deux composants, procédé pour sa fabrication et son utilisation comme fil à coudre ou à broder
WO2010072537A1 (fr) * 2008-12-16 2010-07-01 Oerlikon Textile Gmbh & Co. Kg Procédé et dispositif de formation d'un point d'étirage sur un fil synthétique continu
CN108360110A (zh) * 2018-04-13 2018-08-03 灵氟隆新材料科技江苏有限公司 聚四氟乙烯长丝用定型机

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US6436484B1 (en) 1997-12-09 2002-08-20 Coats American, Inc. Processes for coating sewing thread
TW584680B (en) * 1999-05-28 2004-04-21 Inventa Fischer Ag Device for intermingling, relaxing, and/or thermosetting of filament yarn in a melt spinning process, as well as associated processes and the filament yarn manufactured therewith
WO2001004396A1 (fr) * 1999-07-08 2001-01-18 University Of Manchester Institute Of Science And Technology Traitement de matieres textiles
ATE353109T1 (de) * 2001-07-03 2007-02-15 Saurer Gmbh & Co Kg Vorrichtung zum stauchkräuseln
ITFI20010095U1 (it) * 2001-11-28 2003-05-28 Giesse Srl Apparecchiatura per la produzione di ciniglia
KR100556503B1 (ko) * 2002-11-26 2006-03-03 엘지전자 주식회사 건조기의 건조 시간제어 방법
JP4330488B2 (ja) * 2004-05-12 2009-09-16 達實 小野 過熱蒸気を利用した加熱処理装置
TWI313310B (en) * 2005-03-20 2009-08-11 Oerlikon Heberlein Temco Wattwil A Process and entangling nozzle for the production of knotted yarn
US7429031B1 (en) 2005-12-20 2008-09-30 Zephyr International Llc Ground support system
EP2071067A1 (fr) * 2007-12-12 2009-06-17 Power-heat-set GmbH Récipient de réglage de la chaleur et procédé de réglage de la chaleur
JP5855120B2 (ja) * 2010-11-30 2016-02-09 エーリコン テクスティル ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフトＯｅｒｌｉｋｏｎ Ｔｅｘｔｉｌｅ ＧｍｂＨ ＆ Ｃｏ． ＫＧ 交絡結節点を形成する装置及び方法
EP2463417B1 (fr) * 2010-12-13 2013-07-10 Oerlikon Textile GmbH & Co. KG Unité de galettes
CN102828316B (zh) * 2012-10-02 2015-04-22 上海会博新材料科技有限公司 一种提高对位芳纶纤维在光缆增强中强度利用率的装置
CN103305999B (zh) * 2013-07-15 2016-02-03 中国科学院长春应用化学研究所 聚酰亚胺纤维热牵伸炉及聚酰亚胺纤维热牵伸方法
JP7148529B2 (ja) * 2017-02-28 2022-10-05 リンテック・オブ・アメリカ・インコーポレイテッド 人工筋肉アクチュエータの製造
CN108342821A (zh) * 2018-04-26 2018-07-31 武汉纺织大学 一种适用于高刚性纱线针织用储纱器

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EP0664352A1 (fr) * 1994-01-20 1995-07-26 Hoechst Aktiengesellschaft Fil bouclé à deux composants, procédé pour sa fabrication et son utilisation comme fil à coudre ou à broder
US5593777A (en) * 1994-01-20 1997-01-14 Hoechst Aktiengesellschaft Two-component loop yarns, production thereof and use thereof as sewing and embroidery yarns
WO2010072537A1 (fr) * 2008-12-16 2010-07-01 Oerlikon Textile Gmbh & Co. Kg Procédé et dispositif de formation d'un point d'étirage sur un fil synthétique continu
CN108360110A (zh) * 2018-04-13 2018-08-03 灵氟隆新材料科技江苏有限公司 聚四氟乙烯长丝用定型机

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US5390400A (en) 1995-02-21
JPH06313206A (ja) 1994-11-08
EP0579082B1 (fr) 1998-08-26
DE59308918D1 (de) 1998-10-01

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