EP2800828A2 - Verfahren und vorrichtung zum kräuseln eines multifilen fadens - Google Patents
Verfahren und vorrichtung zum kräuseln eines multifilen fadensInfo
- Publication number
- EP2800828A2 EP2800828A2 EP13700622.7A EP13700622A EP2800828A2 EP 2800828 A2 EP2800828 A2 EP 2800828A2 EP 13700622 A EP13700622 A EP 13700622A EP 2800828 A2 EP2800828 A2 EP 2800828A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- stuffer box
- compressed air
- yarn
- pressure
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000002788 crimping Methods 0.000 title claims abstract description 27
- 230000006835 compression Effects 0.000 claims abstract description 34
- 238000007906 compression Methods 0.000 claims abstract description 34
- 238000001816 cooling Methods 0.000 claims abstract description 22
- 238000012806 monitoring device Methods 0.000 claims description 15
- 238000011156 evaluation Methods 0.000 claims description 12
- 238000009530 blood pressure measurement Methods 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 12
- 238000012544 monitoring process Methods 0.000 abstract description 10
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000007664 blowing Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002074 melt spinning Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
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
-
- 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
-
- 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
- D02G1/125—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes including means for monitoring or controlling yarn processing
Definitions
- the invention relates to a method for crimping a multifilament yarn according to the preamble of claim 1 and to a device for crimping a multifilament yarn according to the preamble of claim 7.
- the filaments before crimping a crimping of the filament strands is impressed.
- the production of such crimps in a multifilament yarn are preferably produced according to the stuffer box principle.
- the multifilament yarn is pneumatically guided by means of a delivery nozzle and blown into a stuffer box.
- the delivery nozzle has a thread channel, which is coupled to a compressed air source for generating a compressed air flow.
- the thread is then passed into a stuffer box, in which the thread is compressed to a yarn plug.
- the filament strands of the thread lay down in loops and bows on the surface of the yarn plug and are compressed via the compressed air flow.
- the yarn plug is then dissolved outside the stuffer box to the crimped thread.
- Such a method and such a device are known for example from EP 0 554 642 AI.
- the formation of the yarn plug is monitored, on the one hand to obtain any unwanted blowout of the yarn pot from the stuffer box and on the other hand to avoid clogging of the stuffer box.
- a pressure of the compressed air flow is measured at the outlet of the delivery nozzle.
- the actual value of the pressure measurement becomes compared with a desired value or a desired value range.
- a regulation of a yarn plug speed which is determined by means of a needle roller on the outlet side of the stuffer box, takes place.
- the known method and the known device thus offer the possibility to comply with predetermined target values of a pressure of the compressed air flow.
- adjustments of the compressed air flow depending on the respective denier of the thread are required for product changes, which inevitably cause a change in the desired values and new setpoint specifications of the pressure of the compressed air flow.
- Another object of the invention is to improve the generic method and the generic device for crimping a multifilament yarn such that in a product change an automatic process optimization is executable.
- the invention is based on the recognition that the compressed air flow entering the stuffer box leads to different overpressures depending on the position of the yarn stopple within the stuffer box. It was thus recognized that, despite gas-permeable walls on the stuffer box, different pressure conditions develop in the stuffer box as a function of the position of the yarn plug. This finding makes use of the invention, so that several pressures of the compressed air flow within the stuffer box is measured in a plurality of measuring points distributed over the length of the stuffer box. So can be derived from the ratio of pressures to each other alone, how large the degree of filling of the stuffer box.
- the monitoring device of the device has for this purpose a plurality of pressure sensors for measuring a plurality of pressures of the compressed air flow within the stuffer box, which are distributed over the length of the stuffer box distributed over several measuring points. So, NEN several pressures of the compressed air flow within the compression chamber in several measuring points are measured simultaneously in order to arrive with the help of the evaluation to an optimal process setting.
- the method variant is preferably used, in which at least one inlet pressure of the compressed air flow in the inlet region of the stuffer box and a back pressure of the compressed air flow in the dust area of the stuffer box is measured.
- the degree of filling of the stuffer box and the respective position of the thread stuffer can be determined from two pressure measurements carried out at different measuring points, based solely on the ratios of the pressures to one another.
- the method variant is advantageously used, in which the upsetting and / or removal of the yarn plug is controlled or regulated as a function of a ratio between at least two pressures of the compressed air flow by changing at least one adjustment parameter. The relationship between the measured pressures indicates whether the crimp needs to be continued or changed with the selected adjustment parameters.
- the ratio between the inlet pressure averaged over a measuring time and the dynamic pressure averaged over the measuring time should have a specific numerical value in order to achieve a high quality during crimping and to get uniformity.
- the method variant is preferably used, in which the relationship between the averaged over a measuring time inlet pressure and the averaged over the measuring time back pressure is formed and in Wel- With a numerical value of the ratio in the range of 0.75 to 1.15, no changes in the setting parameter can be carried out. As long as the pressures in the inlet area and in the compression area of the stuffer box have such a ratio, an operational setting which is advantageous for the crimping is present.
- the setting parameter is changed in such a way that a stopper speed of the yarn tuft slows down.
- the back pressure is much higher than the inlet pressure in the stuffer box, which indicates an insufficient degree of filling of the stuffer box.
- a numerical value indicates the ratio of the pressures of> 1.15 that the degree of filling within the stuffer box is too large, so that the position of the yarn stoppers approaches the inlet area of the stuffer box.
- the method variant is used, in which the adjustment parameter is changed in such a way that the stopper speed of the thread stopper increases. This can completely avoid blockages of the stuffer box.
- the inventive method is independent of the set static pressure of the compressed air flow, which may have different values depending on the product and Fadenti- ter. Only from the ratio of the pressures of the compressed air flow within the stuffer box can be read off the parameters important for monitoring the crimping.
- the device according to the invention is preferably used in the development, in which one of the pressure sensors an inlet region of Stuffer box and at least one other pressure sensor associated with an upsetting region of the stuffer box. Thus, two different pressures of the compressed air flow can be detected by the degree of filling of the stuffer box.
- a further pressure sensor can advantageously be assigned to an outlet region of the stuffer box.
- the ratio between an outlet pressure and a back pressure can signal a too low degree of filling of the stuffer box.
- the monitoring device In order to be able to analyze the measured values detected by the pressure sensors directly and quickly, the monitoring device has an evaluation electronics, which is connected to the pressure sensors. In this case, digital or analogue techniques can be used to obtain corresponding measured value evaluations.
- the advantageous development of the device according to the invention is used, in which the evaluation electronics a signal generator is assigned, which generates a control signal in dependence on a ratio between several pressures of the compressed air stream.
- the ratio generated from the averages of the pressure measurement can be used directly to trigger a control algorithm.
- the monitoring device is connected to a control device which acts on one or more control means for compressing and discharging the yarn plug within the stuffer box. So there is the possibility of the monitoring device in a control loop To tie up a multifilament yarn with high uniformity.
- control means is preferably formed by a driven pair of conveyor rollers at the stopper outlet of the stuffer box, so that the discharge of the yarn plug is determined by the speed of the conveyor rollers.
- the movement of the yarn plug within the stuffer box is also determined by a friction that forms between the yarn plug and the walls of the stuffer box.
- control means is formed by a suction device on the outer circumference of the stuffer box, through which the compressed air is sucked.
- the suction of the compressed air additionally the delivery rate of the compressed air stream can be reduced or increased.
- the device according to the invention is thus particularly suitable for providing multifilament yarns with a high-quality, uniform crimping. Due to the high flexibility of the monitoring device in this case multifilament yarns with a total titer in the range of 300 den. to 12,000 den. textured. For example, textile threads, carpet yarns and also technical yarns can advantageously be curled.
- the method according to the invention will now be explained in more detail below with reference to some embodiments of the generic device with reference to the attached figures. They show:
- Fig. 1 shows schematically a cross-sectional view of a first embodiment of the device according to the invention
- FIG. 2 is a schematic cross-sectional view of a further embodiment of the device according to the invention.
- Fig. 3 shows schematically a cross-sectional view of another embodiment of the device according to the invention
- FIG. 1 shows a first exemplary embodiment of the device according to the invention in a transverse sectional view.
- the device has a delivery nozzle 1, which contains a vertically extending thread channel 3.
- the thread channel 3 extends from a thread inlet 7 at the top of the delivery nozzle 1 to a yarn outlet 6 at the bottom of the delivery nozzle 1.
- In the upper region of the delivery nozzle 1 open several compressed air channels 4 in the thread channel, and connect this with a compressed air source 5th mot the delivery nozzle 1 and the compressed air source 5 are provided yet further means not shown here for guiding and processing the compressed air. For example, it is customary to heat the compressed air before it enters the thread channel 3.
- a compression chamber 2 which is bounded by gas-permeable chamber walls 8 and is held within a suction chamber 10.
- the chamber walls 8 have in this embodiment, a plurality of openings 9, which the interior of the compression chamber 2 with the outer suction chamber 10th connect.
- the suction chamber 10 is connected to a suction device, not shown here via a suction port 29.
- the compression chamber 2 adjoins with a compression chamber inlet 27 directly to the yarn outlet 6 of the delivery nozzle 1.
- the stuffer box 2 extends from the stuffer box inlet 27 to a stuffer box outlet 28.
- a conveyor roller pair 17 is arranged, which forms between them a conveying gap for conveying a yarn plug 26.
- the conveyor roller pair 17 is driven by a roller drive 18, which is coupled to a control unit 19.
- a monitoring device 11 For monitoring the plug formation of a yarn plug within the compression chamber 2, a monitoring device 11 is provided.
- the monitoring device 11 is formed in this embodiment by two pressure sensors 12.1 and 12.2, which are arranged on two distributed over the length of the compression chamber 2 measuring points 13.1 and 13.2.
- the measuring point 13.1 with the pressure sensor 12.1 is arranged in an inlet region of the stuffer box 2 just below the stuffer box inlet 27.
- the measuring point 13.2 with the pressure sensor 12.2 is held in a central region of the stuffer box, which is referred to here as an upsetting area of the stuffer box 2.
- the pressure sensors 12.1 and 12.2 are coupled to an evaluation electronics 14, which cooperates with a signal generator 15 for generating a control signal.
- the signal generator 15 is connected to a control device 16.
- the control device 16 is in this case coupled directly to the control unit 19 of the roller drive 18.
- a compressed air flow is generated via the compressed air source 5 within the thread channel 3 of the delivery nozzle 1, which conveys a thread 25 sucked in via the thread inlet 7 into the stuffer box 2.
- the compressed air flow is blown through the yarn outlet 6 in the stuffer box 2.
- the stuffer box outlet 28 is closed for a short time at the beginning of the process, so that a yarn plug 26 accumulates within the stuffer box 2.
- the stuffer box outlet 28 is opened and the yarn stopper 26 is removed and conveyed via the conveyor roller pair 17.
- the individual filament strands forming the multifilament yarn 25 are deposited and compressed by the compressed air flow into loops and bows on the surface of the yarn plug 26.
- the position of the yarn plug within the stuffer box 2 which determines the degree of filling of the stuffer box 2, to keep as constant as possible.
- an inlet pressure p E is measured via the pressure sensor 12. 1 of the monitoring device 11 in the inlet region of the stuffer box 2.
- a back pressure p s is measured in the second measuring point 13.2 by the second pressure sensor 12.2.
- the pressure measured values in the measuring points 13.1 and 13.2 are supplied directly to the evaluation electronics 14 by the pressure sensors 12.1 and 12.2.
- the generated signals of the pressure sensors 12.1 and 12.2 are averaged over a measuring time in order to obtain in each case an average value of the inlet pressure sp E and an average value of the back pressure p s receive.
- the mean values for the inlet pressure p E and the back pressure p s are compared with each other or set in relation to each other. In the event that both pressures have approximately the same level of pressure, a permissible degree of filling of the compression chamber 2 is reached, so that no changes are required. In this approximate p E applies
- a control signal for changing the setting parameter of the control means is generated via the signal generator 15.
- the adjustment parameter is a control frequency, which is supplied directly to the control unit 19 of the roller drive 18 via the control device 16.
- the control frequency causes the roller drive 18 to slow down the conveying speed of the conveyor roller pair 17, so that the stopper speed of the thread stopper 26 decreases.
- the pressure measurements in the measuring points 13.1 and 13.2 are repeated at regular intervals or continuously in order to regulate the compression and removal of the yarn plug within the stuffer box 2.
- the method according to the invention and the device according to the invention according to the embodiment of FIG. 1 is therefore particularly suitable for carrying out a uniformed and constant crimping of a multifilament yarn with the aid of a conveying roller pair 17 acting as a control means.
- the occurring process fluctuations and pressure fluctuations of the compressed air flow can be compensated advantageous.
- the upsetting and storage of the filament strands and the removal of the yarn plug are essentially at constant filling level of the stuffer box.
- a conveying speed of a conveyor roller pair is used as the control means for influencing the yarn plug formation.
- FIG. 2 a further embodiment of the device according to the invention is shown schematically in Fig. 2 in a cross-sectional view.
- the embodiment of FIG. 2 is substantially identical to the embodiment of FIG. 1, so that only the differences to avoid repetition are explained below.
- the device is also formed from a delivery nozzle 1 and a stuffer box 2.
- the delivery nozzle 1 is identical to the embodiment of FIG. 1 is formed.
- the compression chamber 2 is formed by the gas-permeable chamber walls 8, which are arranged concentrically to the yarn outlet 6 of the yarn channel 3.
- a suction chamber 10 is formed, which is connected via a suction port 29 with a vacuum source, in this case a blower 21.
- the blower 21 is driven by a blower drive 22 to which a control unit 19 is assigned.
- the monitoring device 11 has in this embodiment a total of three pressure sensors 12.1, 12.2 and 12.3, which are held in three over the length of the compression chamber 2 evenly distributed measuring points 13.1, 13.2 and 13.3.
- a first pressure sensor 12.1 in the inlet region of the stuffer box 2 To measure the pressures generated by the compressed air flow, a first pressure sensor 12.1 in the inlet region of the stuffer box 2, a second pressure sensor 12.2 in the dust area of the stuffer box 2 and a third pressure sensor 12.3 arranged in the outlet region of the stuffer box 2.
- the outlet region is in this case at a short distance above the stuffer box outlet 28.
- All pressure sensors 12.1 to 12.3 are connected to an evaluation electronics 14, which cooperates with a signal generator 15.
- the signal transmitter 15 is coupled to the control device 16, which acts directly on the control unit 19 of the fan drive 22 from the blower 21, which serves as a control means for influencing the compression of the yarn plug.
- the function of the embodiment shown in Fig. 2 is identical to the embodiment of FIG. 1. However, the monitoring for upsetting and discharging the yarn plug takes place here by a total of three pressure measurements.
- the inlet region of the inlet pressure p E caused by the compressed air flow is measured by the pressure sensor 12. 1 in the inlet region.
- a back pressure p s occurring in the dust area of the stuffer box is detected via the pressure sensor 12. 2.
- a pending on the outlet side of the stuffer box 2 outlet pressure p A is measured via the pressure sensor 12.3.
- the measured values of the pressure sensors 12.1 to 12.3 are fed to the evaluation electronics 14 and are each fed to a mean value over a time interval.
- the mean values of the inlet pressure p E of the dynamic pressure p s and the outlet pressure p A are compared with one another in order to determine therefrom the actual degree of filling of the compression chamber 2.
- the signal generator 15 of the controller 16 via the signal generator 15 of the controller 16 a Control signal supplied, which leads to an increase in the fan speed of the fan drive 22.
- the compressed air stream is preferably formed by hot air, so that the thread heats up. This makes it necessary that the thread plug formed from the thread is then cooled.
- the thread plug is usually cooled on the circumference of rotating cooling drums which rotate at a predetermined peripheral speed to receive the yarn plug.
- the cooling drum serving as a control means.
- FIG. 3 another embodiment of the device according to the invention is shown.
- the device for crimping is identical to the exemplary embodiment according to FIG. 1 and is formed in each case from a delivery nozzle 1 and a stuffer box 2.
- the compression chamber 2 is associated with a monitoring device 11, which is also identical to the embodiment of FIG. 1. In that regard, reference is made to the aforementioned description of FIG. 1 reference.
- a cooling drum 23 which has a cooling groove 31 on the circumference.
- the cooling groove 31 of the cooling drum 23 is assigned to the stuffer box outlet 28 in order to pick up and remove the thread stoppers 26 emerging from the stuffer box 2.
- the discharge chamber outlet 28 is assigned an outlet connection 30, which is connected directly in front of the cooling groove 31 of the cooling drum 23. det.
- the yarn plug 26 is cooled by means of a cooling air and dissolved after cooling to a crimped thread.
- the inlet pressure p E in the inlet region of the stuffer box 2 and the back pressure p s in the stowage area of the stuffer box 2 is measured and evaluated by means of the monitoring device 11.
- a control unit 19 of the cooling drum drive 24 is controlled by the signal generator 15 and the control device 16 to drive the cooling drum 23 at a slowed or increased peripheral speed for discharging the yarn plug 26.
- the yarn plug speed for regulating the yarn plug formation in the stuffer box 2 can be changed.
- the method according to the invention and the device according to the invention are particularly suitable for obtaining a process adjustment which is automatic for the crimping of the multifilament yarn in order to produce uniform product qualities in the case of unknown crimping processes. Similarly, process fluctuations can be quickly and promptly compensated by targeted measures. In addition, the pressure measurement based monitoring system is not susceptible to contamination so no additional maintenance cycles are required.
- control means and adjustment parameters for regulating the yarn plug mentioned in the exemplary embodiments according to FIGS. 1 to 3 are only examples.
- mechanical folding elements can be used on the outlet side of the stuffer box. zen, to influence the friction and thus the removal of the thread plug.
- the folding can be used accordingly.
- alternative brake systems which could be formed by blowing nozzles, for example, can be assigned to the thread plugs, which likewise influence the removal of the thread plug by additional air friction. Another possibility is given by the fact that the thread properties are used directly to influence the compression and removal of the thread plug.
- a preparation application on a thread can be used to regulate the crimping process and stopper formation in the desired manner.
- the delivery nozzles and compression chambers shown in FIGS. 1 to 3 are preferably formed from two halves, which can be separated to apply a thread.
- the thread is preferably sucked in and introduced via the effect of the compressed air flow.
- the invention is independent and can be combined with all possible types of delivery nozzle and the stuffer box.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102012000166 | 2012-01-07 | ||
| PCT/EP2013/050050 WO2013102642A2 (de) | 2012-01-07 | 2013-01-03 | Verfahren und vorrichtung zum kräuseln eines multifilen fadens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2800828A2 true EP2800828A2 (de) | 2014-11-12 |
| EP2800828B1 EP2800828B1 (de) | 2017-03-08 |
Family
ID=47594640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP13700622.7A Not-in-force EP2800828B1 (de) | 2012-01-07 | 2013-01-03 | Verfahren und vorrichtung zum kräuseln eines multifilen fadens |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US9410269B2 (de) |
| EP (1) | EP2800828B1 (de) |
| CN (1) | CN104040053B (de) |
| WO (1) | WO2013102642A2 (de) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| EP3286365B1 (de) * | 2015-04-24 | 2025-09-24 | Iropa Ag | Verfahren und vorrichtung zur herstellung eines gekräuselten synthetischen multifilamentgarns |
| CN109371518A (zh) * | 2018-11-17 | 2019-02-22 | 江苏纵横优仪人造草坪有限公司 | 人造草丝拉丝机同温同压热空气系统 |
| DE102020109066A1 (de) * | 2019-04-03 | 2020-10-08 | Oerlikon Textile Gmbh & Co. Kg | Verfahren und Vorrichtung zum Führen und Benetzen eines gekräuselten Faserkabels |
| WO2021104959A1 (de) | 2019-11-29 | 2021-06-03 | Oerlikon Textile Gmbh & Co. Kg | Vorrichtung zum kräuseln eines multifilen fadens |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2052161A5 (de) * | 1969-07-24 | 1971-04-09 | Rhodiaceta | |
| US3802038A (en) * | 1970-12-16 | 1974-04-09 | Neumuenster Masch App | Crimping of filamentary materials |
| GB1391273A (en) * | 1972-01-31 | 1975-04-16 | Platt International Ltd | Textile machines |
| US3777338A (en) * | 1972-09-18 | 1973-12-11 | Allied Chem | Electronic-pneumatic yarn plug control system for yarn texturing device |
| US3911539A (en) * | 1972-12-29 | 1975-10-14 | Phillips Petroleum Co | Method for crimping synthetic thermoplastic fibers |
| US3965548A (en) * | 1975-01-31 | 1976-06-29 | E. I. Du Pont De Nemours And Company | Crimper startup method and system |
| US4956901A (en) * | 1987-11-16 | 1990-09-18 | E. I. Du Pont De Nemours And Company | Apparatus and process for forming a wad of yarn |
| DE59206744D1 (de) | 1992-02-07 | 1996-08-14 | Rieter Ag Maschf | Verfahren und Vorrichtung zum kontinuierlichen Kräuseln von thermoplastischen Fäden |
| JPH05287631A (ja) * | 1992-04-03 | 1993-11-02 | Aiki Seisakusho:Kk | 巻縮加工機 |
| US5727293A (en) * | 1994-11-29 | 1998-03-17 | Maschinenfabrik Rieter Ag | Method and apparatus for continuous crimping of thermoplastic threads |
| DE10236826A1 (de) * | 2002-08-10 | 2004-04-22 | Saurer Gmbh & Co. Kg | Verfahren und Vorrichtung zum Spinnen und Texturieren eines multifilen Verbundfahrens |
| ATE513074T1 (de) | 2003-01-15 | 2011-07-15 | Oerlikon Textile Gmbh & Co Kg | Verfahren und vorrichtung zum spinnen und kräuseln eines synhetischen fadens |
| DE102004022469A1 (de) | 2004-05-06 | 2005-12-01 | Saurer Gmbh & Co. Kg | Verfahren und Vorrichtung zum Stauchkräuseln eines multifilen Fadens |
| EP2084315B1 (de) * | 2006-11-04 | 2014-01-08 | Oerlikon Textile GmbH & Co. KG | Verfahren und vorrichtung zum kräuseln eines multifilen fadens |
| US9896786B2 (en) * | 2012-08-23 | 2018-02-20 | Columbia Insurance Company | Systems and methods for improving and controlling yarn texture |
-
2013
- 2013-01-03 CN CN201380004867.8A patent/CN104040053B/zh not_active Expired - Fee Related
- 2013-01-03 EP EP13700622.7A patent/EP2800828B1/de not_active Not-in-force
- 2013-01-03 WO PCT/EP2013/050050 patent/WO2013102642A2/de not_active Ceased
-
2014
- 2014-07-07 US US14/324,655 patent/US9410269B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2013102642A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20140317895A1 (en) | 2014-10-30 |
| CN104040053A (zh) | 2014-09-10 |
| EP2800828B1 (de) | 2017-03-08 |
| US9410269B2 (en) | 2016-08-09 |
| WO2013102642A2 (de) | 2013-07-11 |
| CN104040053B (zh) | 2017-02-01 |
| WO2013102642A3 (de) | 2013-11-07 |
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