EP0428045B1 - Fadendüse zum Texturieren eines synthetischen Fadens - Google Patents

Fadendüse zum Texturieren eines synthetischen Fadens Download PDF

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Publication number
EP0428045B1
EP0428045B1 EP90121259A EP90121259A EP0428045B1 EP 0428045 B1 EP0428045 B1 EP 0428045B1 EP 90121259 A EP90121259 A EP 90121259A EP 90121259 A EP90121259 A EP 90121259A EP 0428045 B1 EP0428045 B1 EP 0428045B1
Authority
EP
European Patent Office
Prior art keywords
thread
temperature
temperature sensor
nozzle
thread nozzle
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
EP90121259A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0428045A1 (de
Inventor
Hans-Peter Berger
Klaus Burkhardt
Klaus Gerhards
Hans-Peter Eck
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
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 Barmag AG, Barmag Barmer Maschinenfabrik AG filed Critical Barmag AG
Publication of EP0428045A1 publication Critical patent/EP0428045A1/de
Application granted granted Critical
Publication of EP0428045B1 publication Critical patent/EP0428045B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D02G1/12—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes
    • D02G1/122—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes introducing the filaments in the stuffer box by means of a fluid jet

Definitions

  • the invention relates to a thread nozzle for texturing a synthetic thread according to the preamble of claim 1.
  • the procedure differs fundamentally from nozzles in which the thread is conveyed into the circumferential groove of a rotating cooling drum at high speed and with heating and is deposited therein as a crust.
  • the known thread nozzle has a thread channel which is exposed to hot air and which opens into an expansion chamber which has a larger cross section than the thread channel.
  • the expansion chamber has side outlets, e.g. axially directed slots and is therefore connected to the atmosphere.
  • the hot air transported in the thread channel with the thread expands in the expansion chamber.
  • the multifilament thread is therefore inflated in the expansion chamber, accumulated to form a thread plug and deformed in the process.
  • the hot air is generated in a heater.
  • the temperature of the hot air in the supply line to the nozzle is measured and, depending on this measured value and a target temperature, the controller for the Heater controlled so that the temperature remains constant.
  • the object of the invention is to equip the thread nozzle in such a way that the stability of the texturing process is ensured, in particular the migration of the dissolving point is excluded.
  • the solution turns away from the popular view that the highest temperature of the heating gas to which the thread is exposed determines the texturing result. Rather, the invention consciously accepts that the temperature in the texturing nozzle is not proportional to the highest temperature of the heating gas. It should be noted here that the temperature of the heating gas in the nozzle is changed continuously by the expansion. It has been shown that excellent long-term stability of the texturing process and the texturing quality can be achieved with this temperature detection. The decisive factor here should be that the temperature of the hot air in the expansion chamber also affects the air pressure in the expansion chamber, with which the thread plug formed there is compressed and pushed out of the expansion chamber, and thus a self-regulating effect arises with regard to temperature and pressure.
  • the known thread nozzle is designed so that the thread channel and the expansion chamber can be opened over their entire length. This means that a running thread can be inserted laterally into the thread channel or the expansion chamber.
  • a suitable design of such a texturing nozzle is shown, for example, in EP-A 256 448 (EP-1542).
  • the thread nozzle is divided in a longitudinal plane of the thread channel, so that one half can be folded open relative to the other half about an axis parallel to the thread channel.
  • the controller for the air heater will increase the energy supply in the sense of increasing the temperature and thus move the heater far out of its operating range.
  • a second temperature sensor is arranged in the feed line between the heater and the thread nozzle (claim 3), the one known from DE-C 36 34 749 (IP-1493) Measure can be applied that the air flow rate through the heater is kept constant even during the opening of the texturing nozzle (claims 3 and 4).
  • the control circuit which comprises the control device, the temperature sensor and the heater for the heating medium, is separated when the nozzle is opened and the control device is operated in the control position which previously resulted in the stationary operation of the thread nozzle and which then remains fixed when the nozzle is opened without change is specified.
  • This ensures that the constant amount of air or steam continues to be heated with the same amount of energy and accordingly continues to be heated to the temperature maintained during operation. It should be mentioned that this method is useful and applicable regardless of whether the temperature sensor according to claim 1 in the expansion chamber of the thread nozzle or - as usual - is arranged in the supply line for the heating medium between the heater and the thread nozzle.
  • the method according to DE-C 36 34 749 describes that when the nozzle is opened, the air flow supplied to the heater is throttled. This measure serves to keep the flow rate in the heater constant. However, this measure does not prevent hot air from still escaping in the nozzle, which interferes with the operation. This problem is eliminated in this nozzle by the measure according to claim 5.
  • the switching of the valve is preferably carried out by the device with which the closure of the texturing nozzle is released and the texturing nozzle is opened (claim 6). With this opening device, the switchover of the controller from the temperature sensor in the expansion chamber to the temperature sensor in the supply line can also be triggered. Alternatively, it is also possible to carry out the switchover of the valve using the measures for switchover of the controller described below.
  • the measures described below for switching the controller from the temperature sensor in the expansion chamber to the temperature sensor in the supply line have the advantage that strong fluctuations in the energy supply of the heating gas heater can be avoided.
  • the solution is achieved by keeping the temperature conditions of the supply line constant (claim 7).
  • the jump in temperature that occurs when the thread nozzle is opened can be exploited (claim 8).
  • the problem of causing an automatic switchover can also be solved by the measure according to one of claims 9 to 11. This has the advantage that there is a very close relationship between the operating temperature of the thread nozzle and the operating temperature of the feed line at the time of switching. This relation is predetermined by the permitted temperature difference.
  • the temperature state of the feed line which prevails during operation of the thread nozzle, is also maintained when the thread nozzle is opened.
  • this has the consequence that when the thread nozzle is closed and when switching back to regulating the temperature in the expansion chamber, the temperature of the expansion chamber applies to the temperature in the supply line with a very narrow tolerance and consequently again essentially the same value as in previous operating phase. It is thus effected that the operating state of the feed line during the opening of the thread nozzle is maintained in the state in which it remains during the previous operating phase, and that this state then in turn leads to the leading state for the new setting of the temperature in the expansion chamber during the next one Represents operating phase. This ensures that the operating states of consecutive operating phases essentially correspond.
  • the thread nozzle characterized by claim 3 can also be automated by the measure according to claim 12.
  • the handle with which one half of the nozzle is released from the other half of the nozzle also serves to actuate the valve, with which the supply channel is uncoupled from the thread nozzle and connected to the outlet channel.
  • the texturing nozzle consists of two rectangular halves 1 and 2 and an adjoining stowage chamber 3.
  • the texturing nozzle and stowage chamber 3 are in a longitudinal plane 21 shared.
  • the left half of the nozzle 1 in FIG. 1 with the half of the storage chamber 3 fastened thereon is fastened in the machine frame 6.
  • the nozzle half 2 and the half of the storage chamber 3 assigned to it can be moved perpendicular to the parting plane.
  • the second nozzle half 2 consists of a guide body 4 and a piston 5.
  • An elongated cylinder space 7 is incorporated into the guide body 4.
  • the piston 5 is fitted into this cylinder space 7 in such a way that it is movable in the longitudinal direction.
  • the movement of the piston relative to the guide body 4 is limited by the holder 8, which engages over the lateral projections of the piston.
  • Cross grooves 15 are incorporated into the rear of the piston.
  • the transverse grooves are arranged so close to one another that a desired flexibility of the piston in the longitudinal direction is achieved.
  • longitudinal grooves 16 can also be introduced into the rear side, so that the piston also has a desired flexibility in the transverse direction.
  • the piston is backed on its back facing the cylinder space 7 with a membrane 17 which is flexible.
  • the shape of the membrane is adapted to the shape of the cylinder space 7.
  • the circumferential corner between the membrane 17 and the cylinder walls 7 is sealed by a frame-shaped sealing ring 18.
  • the sealing ring 18 is held in its place by a holding frame 19 which is also adapted to the cross section of the cylinder space 7 with greater tolerance.
  • the frame 19 has a groove, notch or the like on one of its circumferential corners, into which the frame-shaped seal 18 is inserted. However, the seal 18 projects beyond the periphery of the holding frame 19 in such a way that the seal rests on the walls of the cylinder space 7 and on the membrane 17.
  • a pressure medium is applied to the cylinder space 7 through the connecting channel 20. It is preferably the heating medium that is also applied to the texturing nozzle.
  • both the first nozzle half 1 and the piston 5 have a groove which forms the thread channel 12 in the closed state (cf. FIG. 2).
  • the thread channel 12 is acted upon by hot air through hot air supply channel 9, ring channel 10 and tap holes 11.
  • the openings of the ring channel 10 in the parting plane 21 of both the first nozzle half 1 and the piston 5 are close to one another in the closed state, so that hot air also flows into the piston.
  • the stitch holes open into the thread channel at an acute angle.
  • the hot air flowing into the thread channel on the one hand exerts an impulse on the running thread and on the other hand the thread is heated.
  • the thread in the stowage chamber 3 expansion chamber
  • the hot air can escape through the slots 22 of the storage chamber 3 on the surface of the thread plug.
  • the thread plug 23 is transported at the end of the storage chamber through the conveyor wheels 24 to a cooling drum (FIG. 3).
  • the movable half of the storage chamber 3 is attached to the piston 5. Therefore, the guide body 4 has a corresponding recess in the area of the passage of this storage chamber half.
  • the guide body 4 has an extension 25. At the end of which there is a resilient support 26, which causes the two halves of the storage chamber 3 to lie on one another tightly and without movement during operation.
  • hot air supply duct 9 and the connecting duct 20 are connected to one another outside the texturing nozzle.
  • the devices for opening and closing the nozzle are not shown. It can in particular be nozzle-piston units 31, which are indicated in FIG. 3 and which can be pressurized simultaneously with the cylinder space 7 in order to press the guide body 4 with the holder 8 firmly against the first nozzle half 1 and at the same time To push piston 5 into the parting plane 21.
  • these cylinder-piston units 31 are acted upon by an independent pressure source.
  • the piston 5 is pressurized by the heating gas.
  • the guide body 4 is moved in the direction of arrow 27 from the stationary first nozzle half.
  • the supply of hot air to the connecting duct 20 and - as will be described later - to the hot air supply duct 9 is prevented.
  • the second texturing nozzle half is moved back again, so that the first texturing nozzle half 1 and the piston 5 lie one on top of the other in the parting plane 21.
  • the centering bolts 13 in the piston 5, which have a conical tip, and the centering holes 14 in the first texturing nozzle half ensure that the piston 5 assumes its position during operation so that the two groove halves in the first texturing nozzle half and in the piston 5 close exactly cover the thread channel 12. It also ensures that the openings of the annular channel 10 in the parting plane 21 lie exactly on top of each other.
  • connection channel 20 is connected to the heater.
  • the cylinder space 7 is pressurized.
  • the pressure medium initially seals the sealing ring 18 with respect to the membrane 17 and the cylinder wall. Furthermore, the pressure medium presses the piston 5 firmly against the parting plane 21 of the first texturing nozzle half 1.
  • the invention results from the following description of the exemplary embodiment of the texturing nozzle shown schematically in FIGS. 3 and 4 with all the elements that are decisive for this invention.
  • the thread is delivered by a godet 35. It can be seen that the thread channel 12 is much narrower than the expansion chamber 3.
  • the thread plug formed is conveyed to the cooling drum 36 at a defined speed by the wheels 24, not shown in FIG. 3, it being emphasized that the wheels 24 are for the purpose serve to influence the outlet speed for the thread plug 23 from the expansion chamber 3 and to keep it constant.
  • the cooling drum 36 is driven to rotate at a slower speed corresponding to the conveying speed of the thread plug 23.
  • the cooling drum 36 has a groove with a perforated groove base on its circumference. Except for an air suction nozzle 37, it is sealed airtight.
  • the thread plug 23 is guided over a partial area of the groove circumference.
  • the air flow directed inwards from the outside causes the thread plug to adhere to the cooling drum and cool it down at the same time.
  • the thread is then pulled out of the continuously fed thread plug 23 at the dissolving point 38.
  • the position of the opening point is determined on the one hand by the compactness of the thread plug and on the other hand by the thread pulling force of the thread being pulled out.
  • the resolution point 38 should be such that the thread in front of the partial wrap of the subsequent conveyor roller 41 is still performed over a partial circumference of the cooling drum 36 or the groove.
  • This partial circumference between the run-up point 40.1 and the run-off point 40.2 is referred to below as the friction path 39.
  • the thread arrives at the traversing device 42 and the deflection roller 43. From there it is wound up to a bobbin 44 which is clamped on the bobbin spindle 45.
  • the friction path 39 has a self-regulating effect. It can be assumed that the surface speed of the cooling drum 36 corresponds to the speed of the thread plug 23. The thread speed is many times higher in accordance with the compression of the thread in the thread plug 23. Therefore, 39 frictional forces act on the thread in the friction path. The result of this is that the thread tension between the opening point 38 and the opening point 40.1 of the thread on the surface of the cooling drum is lower than the thread tension between the outlet point 40.2 and the conveying roller 41. If the compression and compactness of the opening stopper 23 then diminishes the dissolving point 38 against the direction of rotation 56 of the cooling drum 36. However, this also causes the point of overrun 40.1 to move against the direction of rotation 56 with the result that the friction distance 39 increases.
  • 3 and 4 show the following:
  • compressed air from the compressed air source 28 is heated in the heater 29.
  • the compressed air is then fed to the annular channel 10 of the nozzle via the feed line 9 and valve 30.
  • the heater 29 is controlled by the controller 55.
  • the controller contains a circuit breaker 54 which is connected to the temperature sensor 47 via line 49 and suitable amplifiers.
  • the on-time and off-time of the circuit breaker 54 for the heater is now controlled as a function of the measured temperature 47 so that the temperature at the temperature sensor 47 in the expansion chamber remains essentially constant. It should be mentioned that instead of the circuit breaker 54, continuous analog control can also take place.
  • the valve 30 is provided for this purpose.
  • the valve is located between the heater 29 and the nozzle.
  • the valve 30 is a 2/2-way valve. In its normal position, this directional valve 30 opens the feed line 9 from the heater 29 to the thread nozzle. In its other position, the heater 29 is connected to an exhaust air duct 32.
  • the exhaust air duct 32 opens into the open via a throttle 33 at a suitable point.
  • the throttle 33 is designed so that its air resistance for the hot air is substantially equal to the air resistance that the thread nozzle also has in the operating state.
  • This position of the valve 30 is effected by the adjuster 34.
  • the adjuster 34 is connected to the locking mechanism 31 for the second movable half 2 of the thread nozzle in the sense of a synchronous actuation. So if the signal "thread nozzle up" is given by the common connecting line, the valve 30 is simultaneously brought into the position in which the heater 29 with the Exhaust air duct 32 is connected while the connection to the thread nozzle 1 is closed. This ensures that the flow conditions in the air heater 29 remain essentially constant.
  • the heater 29 can continue to be operated with the controller 55 within its control range and does not change its normal operation even during the opening of the thread nozzle and the decommissioning of the thread nozzle, since at the same time the thread sensor 47 is deactivated and switched off.
  • a second temperature sensor 46 is provided in the feed line 9 between the heater 29 and the valve 30 or in the exhaust air duct 32.
  • the latter alternative is shown in the exemplary embodiment.
  • the first-mentioned alternative is only shown in dashed lines and the second temperature sensor is designated by (46).
  • the temperature signals of the temperature sensors 46 and 47 are also with the thread nozzle closed, i.e. in operation, constantly fed to the controller 55 via lines 48 and 49.
  • the controller 55 contains, on the one hand, a switching device (actual value switch) 51 and a switching device (setpoint switch) 57 and, on the other hand, a differential encoder 50.
  • the connection between the circuit breaker 54 and the temperature sensor 47 is established during operation.
  • the control part of the circuit breaker compares the actual temperature IT47 with the target temperature ST47.
  • the differential encoder 50 serves as this device.
  • the temperature difference of the temperatures IT46 and IT47 in the temperature sensors 46 and 47 is formed in the differential encoder 50 and compared with a difference setpoint.
  • the difference setpoint is initially specified as the empirical value IN.
  • temperature measurement continues to be carried out by temperature sensor 47 even when the thread nozzle is open.
  • the switching devices 51, 57 thus alternately connect the lines 48 or 49 of the two temperature sensors 46 or 47 for the actual values IT46, IT47 of the temperature via line 52 or the setpoints ST46, ST47 via line 53 to the control part of the circuit breaker 54.
  • the thread nozzle When the thread nozzle is open, the energy supply to the heater 29 is adjusted so that the temperature at the temperature sensor 46 in the exhaust air duct 32 remains constant. Since at the same time it is ensured by dimensioning the throttle resistance of the valve 30 that the air flow rate does not change significantly either, the energy supply to the heater 29 also remains essentially constant.
  • the temperature at the temperature sensor 47 in the expansion chamber 3 rises again, since the expansion decreases and the pressure in the expansion chamber 3 increases.
  • This jump in temperature is also used to switch over the setpoint switch 57 and the actual value switch 51.
  • the jump in temperature is in turn carried out by forming and recording the difference in temperature IT46 and IT47. Because the temperature difference, which is measured at the sensors 46 and 47, decreases.
  • the switching device 51, 57 is switched over in the sense that the temperature sensor 47 and the setpoint value 46 are again connected to the control part of the circuit breaker 54.
  • This setpoint ST46 corresponds to the temperature prevailing in operation in the feed line 9 and is entered manually.
  • the setpoint ST46 can also be determined and saved during continuous operation of the nozzle.
  • the current measured value IT46 is continuously input to the setpoint generator ST46 at the temperature sensor 46 and stored therein as a setpoint as soon as the circuit breaker 54 reports via line 58 that the heater 29 has reached its stable operating state.
  • the operating state of the feed line 9 can also be maintained during the interruption of operation.
  • the state of the heating medium in the expansion chamber 3 returns to the state observed in the previous operating phase, since - as mentioned before - this operating state is frozen in the feed line 9, i.e. has been obtained.
  • the temperature signal of the temperature sensor 47 is continuously fed to the controller 55 via the line 49 when the thread nozzle is closed.
  • the controller 55 contains, on the one hand, a switching device (actual value switch 51) and a switching device (setpoint switch 57) and, on the other hand, the circuit breaker 54 with a control part.
  • the continuously measured actual value IT 47 of the temperature at the temperature sensor 47 is fed to the control part via line 52 via the switching device 51.
  • the setpoint of the temperature (ST 47) is fed to the control part of the circuit breaker 54 via switching device 57 and line 53.
  • the actual temperature is compared in the control section of the circuit breaker (IT 47) and the target temperature (ST 47). Depending on the difference, the circuit breaker 54 is controlled so that the measured temperature IT 47 remains constant during operation.
  • the valve 30 When opening the thread nozzle, the valve 30 is now simultaneously actuated, e.g. Magnet 34, switched. As a result, the heater 29 is connected to the bypass 32 and the throttle 33 via the feed line 9.
  • the throttle 33 is - as already described - set so that its throttle resistance essentially corresponds to that of the thread nozzle in operation. Therefore, the amount of air or steam passed through the heater 29 remains constant.
  • the actual value switch 51 and setpoint switch 57 are also switched to their respective zero position. Therefore, no regulation takes place in the control section of the circuit breaker 54. Rather, the circuit breaker 54 is now kept in the operating state by corresponding switching of the control part, which was previously determined and stored with the thread nozzle closed. By opening the thread nozzle, the circuit breaker 54 does not change its operating state. Therefore, the energy supply to the heater 29 remains unchanged even when the thread nozzle is open. Since the amount of heating medium that has passed through remains unchanged, the temperature is also unchanged.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
EP90121259A 1989-11-11 1990-11-07 Fadendüse zum Texturieren eines synthetischen Fadens Expired - Lifetime EP0428045B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3937664 1989-11-11
DE3937664 1989-11-11
DE4013104 1990-04-25
DE4013104 1990-04-25

Publications (2)

Publication Number Publication Date
EP0428045A1 EP0428045A1 (de) 1991-05-22
EP0428045B1 true EP0428045B1 (de) 1996-01-17

Family

ID=25887000

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90121259A Expired - Lifetime EP0428045B1 (de) 1989-11-11 1990-11-07 Fadendüse zum Texturieren eines synthetischen Fadens

Country Status (6)

Country Link
US (1) US5088168A (cs)
EP (1) EP0428045B1 (cs)
JP (1) JPH03174039A (cs)
CS (1) CS557890A3 (cs)
DE (1) DE59010068D1 (cs)
RU (1) RU2041981C1 (cs)

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EP0488939B1 (de) * 1990-11-29 1995-02-22 Maschinenfabrik Rieter Ag Verfahren und Vorrichtung zur Pfropfenauflösung nach der Texturierung
DE4224454C2 (de) * 1991-07-30 1996-06-05 Barmag Barmer Maschf Verfahren zur Regelung der Temperatur eines Heizmediums zur Erhitzung eines synthetischen Fadens und Texturiereinrichtung für einen synthetischen Faden
DE59209608D1 (de) * 1991-10-26 1999-02-18 Barmag Barmer Maschf Verfahren zum Abziehen eines endlosen, synthetischen Fadens
DE59206744D1 (de) * 1992-02-07 1996-08-14 Rieter Ag Maschf Verfahren und Vorrichtung zum kontinuierlichen Kräuseln von thermoplastischen Fäden
FR2693481B1 (fr) * 1992-07-08 1994-08-26 Icbt Roanne Procédé de réglage de la température régnant à l'intérieur d'un four destiné au chauffage d'un fil en mouvement.
EP0579082B1 (de) * 1992-07-10 1998-08-26 Hoechst Aktiengesellschaft Verfahren zur Wärmebehandlung von sich bewegenden Garnen und Vorrichtung zur Durchführung dieser Behandlung
DE59308629D1 (de) * 1992-07-10 1998-07-09 Hoechst Ag Verfahren zum Verstrecken von erhitzten Garnen, damit erhältliche Polyesterfasern sowie deren Verwendung
DE4422252A1 (de) * 1993-07-15 1995-01-19 Barmag Barmer Maschf Texturierdüse
US5727293A (en) * 1994-11-29 1998-03-17 Maschinenfabrik Rieter Ag Method and apparatus for continuous crimping of thermoplastic threads
US5737815A (en) * 1996-02-29 1998-04-14 Fiberco Inc. Method and apparatus for controlling a take-up point when texturizing a yarn
TW449627B (en) * 1998-03-03 2001-08-11 Heberlein & Co Ag Yarn processing device and use thereof
EP1026295A3 (de) 1999-02-06 2003-11-26 Barmag AG Verfahren und Vorrichtung zum Stauchkräuseln eines Fadens
ATE409763T1 (de) * 2000-03-01 2008-10-15 Oerlikon Textile Gmbh & Co Kg Verfahren und vorrichtung zum stauchkräuseln
EP1397541B2 (de) * 2001-05-10 2012-02-15 Oerlikon Textile GmbH & Co. KG Vorrichtung zum stauchkräuseln eines synthetischen multifilen fadens
DE10202788A1 (de) * 2002-01-25 2003-07-31 Rieter Ag Maschf Texturieranlage und Texturierdüse hierfür
US20070137166A1 (en) * 2005-12-20 2007-06-21 Bobby Carter Devices and methods for heat-setting yarns
DE102012004747A1 (de) * 2012-03-08 2013-09-12 Oerlikon Textile Gmbh & Co. Kg Kräuselvorrichtung
US9896786B2 (en) 2012-08-23 2018-02-20 Columbia Insurance Company Systems and methods for improving and controlling yarn texture
US9951445B2 (en) 2012-08-23 2018-04-24 Columbia Insurance Company Systems and methods for improving and controlling yarn texture
US11078606B2 (en) 2015-04-24 2021-08-03 Iropa Ag Method and device for producing crimped multifilament synthetic yarn
EP3486355A1 (en) * 2017-11-17 2019-05-22 Polytex Sportbeläge Produktions-GmbH An apparatus and a method for manufacturing of a textured yarn
CN115323564B (zh) * 2022-07-26 2024-05-17 桐昆集团浙江恒盛化纤有限公司 一种舒软绒感纱加工工艺及加工设备

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CN1011991B (zh) * 1988-08-29 1991-03-13 里特机械公司 在纺织机械内的一种加热方法

Also Published As

Publication number Publication date
EP0428045A1 (de) 1991-05-22
US5088168A (en) 1992-02-18
RU2041981C1 (ru) 1995-08-20
CS557890A3 (en) 1992-04-15
DE59010068D1 (de) 1996-02-29
JPH03174039A (ja) 1991-07-29

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