EP4448853A1 - Verfahren und anlage zur herstellung eines gezwirnten synthetischen garns - Google Patents
Verfahren und anlage zur herstellung eines gezwirnten synthetischen garnsInfo
- Publication number
- EP4448853A1 EP4448853A1 EP22817584.0A EP22817584A EP4448853A1 EP 4448853 A1 EP4448853 A1 EP 4448853A1 EP 22817584 A EP22817584 A EP 22817584A EP 4448853 A1 EP4448853 A1 EP 4448853A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- yarn
- collecting
- spin
- twisting
- designed
- 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.)
- Pending
Links
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D13/00—Complete machines for producing artificial threads
- D01D13/02—Elements of machines in combination
-
- 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
-
- 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
- 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
- D01D10/04—Supporting filaments or the like during their treatment
- D01D10/0436—Supporting filaments or the like during their treatment while in continuous movement
- D01D10/0472—Supporting filaments or the like during their treatment while in continuous movement the filaments being supported on endless bands
-
- 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
- D01D11/00—Other features of manufacture
- D01D11/04—Fixed guides
-
- 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
- D01D13/00—Complete machines for producing artificial threads
Definitions
- the invention relates to a method and a plant for producing a twisted synthetic yarn according to the preamble of the independent patent claims.
- twisting a multifilament yarn is almost mandatory.
- the twisting process is a separate process that is completely detached from the spin-draw process of the multifilament yarn.
- a large number of continuous filaments are produced by means of a spinneret, which are connected to form one or more yarns and, depending on the process sequence, are dyed and/or textured in order to be wound up by a bobbin winder after further treatment steps for strengthening.
- the filaments and the yarns produced from them are conveyed in the system at different high speeds in order to then be wound up at a speed of between 2,000 m/min and 4,000 m/min.
- the bobbins with the wound yarns have to be temporarily stored, which, depending on the material and application, has to be done in an air-conditioned area.
- a continuous process is understood to mean a manufacturing process in which the yarn is no longer wound onto a tube and not stored separately before the twisting process takes place.
- the invention relates to a method and a system for producing a twisted synthetic yarn, in which continuous filaments are produced from a liquid plastic by means of at least one spinneret and at least one yarn is then produced from at least two continuous filaments, which is drawn off from a treatment device and collected by means of a collector - And transport device is passed to a twisting device.
- the Invention includes the technical teaching that the collection and transport device can be designed as a memory.
- the collecting and transporting device serves as a store with which different working speeds of the spin-drawing system and the twisting device can be compensated. For example, when changing the spools of the twisting device or when a continuous filament or yarn breaks in the spin-drawing system, the collecting and transport device can compensate for a possible production loss for a short time.
- the collecting and transporting device can also be designed as a spatial connection between the spin-drawing system and the twisting device.
- the collection and transport device can also be designed to further treat the yarn after the treatment device of the spin-drawing system or to relax or freeze the current alignment of the molecular chains to one another, for example by means of a temperature-controlled drum, cylinder or roller, and/or in a atmosphere of gas or hot steam to be transported.
- the invention has the advantage that a continuous process without interruption from the production of the continuous filaments to the twisted yarn is possible by means of the collecting and transport device.
- the system can be operated without interruption in one line from liquid plastic or granulate to twisted yarn, which saves space and reduces storage capacity and handling costs.
- the spin-draw system is operated with a lower capacity, but this is more cost-effective overall, since it is operated without interruption and is equipped with simple components. Due to the lower speed of the spin-draw line, the risk of yarn breakage is reduced, at the same time the yarn can be produced with a higher quality, since the molecules have more time to align and take on the specific temperature of the individual components. Due to the slower speed of the spin-drawing system, the components can be made larger, so that up to 20 yarns or more can be guided and drawn on one godet at the same time.
- a predetermined length of the at least one yarn is preferably taken up by the collecting and transporting device in order to compensate for a production difference between the spin-drawing system and the twisting device.
- This length can be several hundred to several thousand meters, where the yarn is laid down, wound or guided in windings or loops.
- At least two yarns can preferably be transferred from the spin-drawing system to the twisting device by means of a collecting and transport device.
- a collecting and transport device can be connected to several separate twisting devices, which increases productivity.
- the at least one yarn is treated in an atmosphere of hot steam or gas during transfer from the spin-draw line to the twisting device.
- the collection and transport device may be maintained in an atmosphere of hot steam or a conditioned gas, thus requiring an enclosure or enclosure.
- the at least one yarn is preferably fed out of the spin-drawing system at a speed of 100 m/min to 300 m/min, preferably at a speed of 100 m/min to 150 m/min.
- a speed range of 200 m/min to 300 m/min is possible if the twisting device can be operated at a correspondingly high speed of over 12,000 rpm. According to the current status, this requires the use of magnetic bearings for the spindles.
- the at least one yarn (G) is fed into the twisting device at a speed of 10 m/min to 300 m/min, preferably at a speed of 10 m/min to 150 m/min.
- the spin-drawing system must be shut down to the production speed of the twisting device, with small differences in the production speed being possible and necessary in order to be able to use the buffer or store of the collecting and transport device, namely for emptying and for filling.
- the at least one yarn is guided within the collection and transport device by means of a temperature-controlled drum, cylinder or rows of deflection rollers and can be treated further in the process.
- the at least one yarn which consists of at least two individual filaments, is conditioned or relaxed by means of a take-off device, which can be designed as at least one transport roller, this process preferably being supported by means of steam or conditioned gas.
- the withdrawal device can thus as Extension of the treatment device serve, for example, as a replacement for the function of the winder, with which a stretching or relaxation to the last pair of rollers also takes place.
- the spinning/drawing system and the twisting device are adjusted in the respective production speed to the current storage capacity of the collecting and transport device by means of a controller.
- An average production speed is assumed here, which both components can exceed or fall below, depending on whether the storage capacity of the collection and transport device is to be emptied or filled.
- the speed of the collecting and transport device can also be adjusted to the current speed of the spin-drawing system and the twisting device by means of the same control.
- the system according to the invention for producing a twisted synthetic yarn comprises at least one spin-and-draw system which is designed to produce continuous filaments from a liquid plastic or granulate by means of at least one spinneret and then to produce at least one yarn from at least two continuous filaments, with a downstream treatment device for treating the at least a yarn. It also includes a collecting and transporting device and a subsequent twisting device.
- the system is designed to transfer at least one yarn without interruption from the spin-drawing system to the twisting device or to transfer at least two yarns to the cabling device
- the system can be operated without interruption in one line from liquid plastic or granulate to twisted yarn, which saves space and reduces storage capacity and handling costs.
- the spin-draw system is operated with a lower capacity, but this is more cost-effective overall, since it is operated without interruption and is equipped with simple components. Due to the lower speed of the spin-draw line, the risk of yarn breakage is reduced, at the same time the yarn can be produced with a higher quality, since the molecules have more time to align and take on the specific temperature of the individual components.
- the collecting and transporting device is preferably designed to compensate for a difference in the production speed between the spin-drawing system and the twisting device. This makes it possible to change spools in the twisting device, but also to eliminate a break in the yarn or continuous filament without having to stop the system completely.
- the at least one yarn is preferably withdrawn from the treatment device by means of a withdrawal device.
- the take-off device can consist of at least one transport roller and can take on other tasks for treating the yarn.
- the yarn can be relaxed or stretched in the draw-off device, treated simultaneously or separately with hot steam or a conditioned gas,
- the collecting and transporting device can be constructed according to several principles for storing the at least one yarn. It can be designed as a circulating belt, as a drum with a thread guide, as a cylinder that can be set at a distance from one another, or as a store with two rows of deflection rollers that can be set at a distance from one another. Each embodiment has different advantages and disadvantages in terms of storage capacity and the possibility of treating the yarn.
- the collection and transport device can be arranged within a housing which is designed to be filled with hot steam or conditioned gas. This allows the yarn to be treated again before the twisting device, for example to stabilize the molecular chains or to impregnate the yarn.
- the system preferably has a controller that is designed to adapt the respective production speed of the spin-draw system and the twisting device to the current storage capacity of the collecting and transport device, and vice versa. This means that the system components are started up and shut down in order to slowly empty or refill the storage tank.
- the controller is also designed to make an adjustment to the respective difference between the production speed of the spin-drawing system and the twisting device.
- the storage capacity of the collection and transport device is monitored in order to shut down the twisting device in the event of a longer stoppage, for example of the spin-drawing system, so that it is slowly brought to a standstill if the storage capacity is exceeded.
- control is preferably part of the spin-drawing system, since most of the technical difficulties can occur here and the twisting device has to adapt to these operating conditions. Further measures improving the invention are presented in more detail below together with the description of a preferred exemplary embodiment of the invention with reference to the figure.
- FIG. 1 shows a schematic representation of the plant for the production of a synthetic yarn up to further processing in a twisting device/cabling device
- FIG. 2 shows a schematic plan view of a first embodiment of a collecting and transporting device as a circulating belt
- FIG. 3 shows a schematic plan view of a further embodiment of a collecting and transporting device as a drum
- FIG. 4 shows a schematic plan view of a further embodiment of a collecting and transporting device as a store with two drums;
- FIG. 5 shows a schematic top view of a further embodiment of a collecting and transporting device as a store with a large number of deflections.
- a mixer 1 is designed to mix a melt container 2 that is filled with solid plastic particles.
- the plastic particles are usually delivered as chips and placed alone or with chips of another type of plastic in the melt container 2 and melted there by means of energy input to liquid plastic.
- the mixer 1 ensures continuous mixing of the plastic, which varies in physical state between solid and liquid in this process step (granulate and solution).
- the liquid plastic is guided from the melt container 2 to a spinning beam 5 via a pipeline.
- the plastic particles can be fed from silos via a feed device 3 to an extruder 4, which converts the solid plastic particles into a liquid plastic by means of energy input and pressure and leads this to the spinning beam 5 of a spin-drawing system by means of a pipeline.
- Polypropylene, PA6, PA6.6, PET, PTT or other materials can be used as the plastic.
- the materials can be treated with a heat stabilizer, colors, titanium dioxide, a UV stabilizer or other additives to achieve the desired properties be improved.
- the additives can be added continuously or blended into the raw materials.
- At least one spinning pump 6 is arranged inside the spinning beam 5, with which the liquid plastic is pressed into and through the spinning nozzle 7, which has a large number of small openings. Depending on the design of the spinneret 7, it can have a few openings, preferably at least two or else, for example, 50 to 60, or a large number of up to more than 1000 openings.
- the spinneret 7 is connected to a heater 8 to prevent the plastic from freezing.
- An endless filament E flows through each opening of the spinneret, all of which pass through the shaft-like blowing shaft 9 below the spinneret 7 with the heater 8 and the doughy molecular structure of the plastic is solidified for the first time. Additional cooling air is introduced into the blowing chute 9 below the blowing chute 9 via a downpipe 10 .
- the cooling molecular structure of the endless filaments E is influenced by the amount of cooling air, the temperature and the relative humidity.
- At least one yarn G is then produced from at least two, but preferably from a large number of endless filaments E, which yarn is guided via a first godet 11 to a treatment device 12 .
- Each yarn G preferably consists of at least two continuous filaments E.
- the treatment device 12 can have a plurality of heated or cooled godets with which the yarn G is drawn.
- the godets can be designed as mono or duo rollers, which stretch or compress or relax the yarn G in stages at different speeds.
- Further devices for treating the yarn G can be arranged in between, with which, for example, the yarn G is tangled and/or textured and/or provided with an application and/or subjected to a further treatment.
- the yarn G is finally wound up by a winder after the treatment device 12 .
- the yarn G is transferred directly to a collecting and transporting device 14 which temporarily stores the yarn G and subsequently transfers it to a twisting device 15 . This is a continuous process in which the yarn G is not wound up separately and temporarily stored, but is transferred in one piece from the spin-drawing system S to the twisting device 15 without interruption.
- the yarn G is preferably drawn off via a transport roller 13 and transferred to a collecting and transport device 14 .
- the transport roller 13 can be assigned to the spin-draw system S be assigned or be arranged as a separate component between the spin-draw system S and the collecting and transporting device 14. With the transport roller 13, the yarn G can be stretched further or relaxed. In this case, the transport roller 13 can either be cooled or heated and/or can be arranged in a separate housing that is filled with steam or conditioned gas.
- the system components described above from the mixer 1 or the feed device 3 to the treatment device 12 are collectively referred to as the spin-draw system S.
- the collecting and transporting device 14 can be in the form of an endlessly circulating belt 20 on which the yarn G is laid in coils or loops and fed to a twisting device 15 .
- the circulating band 20 can have a length and width extension such that one or more yarns G can be placed next to one another over a length of several hundred meters in windings or loops.
- the circulating belt 20 may be maintained in an atmosphere of hot steam or gas, and accordingly a housing 16 or enclosure may be required.
- the collecting and transporting device 14 serves as a store with which different working speeds of the spin-drawing system S and the twisting device 15 can be compensated for a short time.
- the collecting and transport device 14 can briefly compensate for a possible loss of production.
- the circulating belt 20 serves as a collecting and transporting device in order to create the connection to a twisting device 15 installed downstream of an existing spin-drawing system S.
- the twisting device 15 can also be arranged in another part of the building of the plant.
- the collection and transport device 14 can be designed to treat the yarn G in a special atmosphere, for example with inert gas or superheated steam, or to freeze the current molecular structure of the yarn G.
- two yarns G are removed from the treatment device 12 and placed next to one another on the belt 20 via the transport roller 13 , both of which are introduced into a common (cabling) or separate (twisting) twisting device 15 .
- a yarn G or several yarns G can be fed in parallel to the twisting device 15 via the collecting and transporting device 14 .
- the production speed of the spin-drawing system S is adapted to the twisting device 15 .
- the yarn G is preferably drawn off after the treatment device 12 at a speed of 100 m/min to 150 m/min and fed to the collecting and transporting device 14 .
- the subsequent twisting system 15 is operated at a speed of 10 m/min to 150 m/min.
- the operating principle of Spin-draw system S remains the same. It is only operated at a speed slower by a factor of 30, which means that the components to be used are much simpler and cheaper to manufacture.
- the spin-draw system S and the twisting device 15 are preferably operated at the same speed, which can be, for example, 100 m/min to 120 m/min.
- the collecting and transport device 14 is designed, for example, to accommodate a storage capacity for the production time of one hour of the yarn G, ie to accommodate 6000 m of yarn at a production speed of 100 m/min.
- This buffer is sufficient, for example, to remedy the breakage of a yarn G or a continuous filament E without the twisting device 15 having to be stopped.
- This buffer is also sufficient to enable the bobbins of the twisting device 15 to be changed without stopping production of the spin-drawing system S. If the store with produced yarn G is shut down, for example due to the breakage of a continuous filament and a subsequent stop of the spin-drawing system S, the production speed of the twisting device can be shut down at the same time, for example to 50 m/min.
- the spin-draw system S is operated at an increased speed of up to 150 m/min.
- a control system for the entire system is designed to adjust the production speed of the spinning/drawing system S and the twisting device 15 in such a way that there is always a sufficient supply of yarn G on the collecting and transporting device 14 to compensate for production disruptions or production irregularities.
- the speed of the spin-draw installation S and the speed of the twisting device 15 can be brought closer together.
- this requires a particularly complex, for example magnetic bearing for the spindles of the twisting device 15, so that the twisting device 15 can work at a speed of well over 12,000 rpm and in continuous operation at a speed of 10 m/min to 300 m/min is operated.
- the yarn G is drawn off after the treatment device 12 at a speed of 200 m/min to 300 m/min and fed to the collecting and transporting device 14 .
- the subsequent twisting device 15 is operated at a speed of 10 m/min to 300 m/min.
- the functional principle of the spin-draw system S remains the same. It is only operated at a speed that is 15 times slower, which means that the components to be used are much simpler and cheaper to manufacture.
- the spin-draw system S and the twisting device 15 are preferably operated at the same speed, which can be, for example, 200 m/min to 240 m/min.
- the collection and transport device 14 is designed, for example, as a storage capacity for the production time of half an hour of yarn G, i.e. to take up 6,000 m of yarn at a production speed of 200 m/min.
- this buffer is sufficient to enable the bobbins of the twisting device 15 to be changed without stopping production of the spin-drawing system S.
- this buffer can be sufficient, for example, to remedy the breakage of a yarn G or a continuous filament E without the twisting device 15 having to be stopped. If the store with produced yarn G is shut down, for example due to the breakage of a continuous filament and a subsequent stop of the spin-drawing system S, the production speed of the twisting device can be shut down at the same time, for example to 50 m/min. This can continue until the store of yarn G in the collecting and transporting device 14 has been raised again to a predetermined desired value.
- the spin-draw system S is operated at an increased speed of up to 300 m/min.
- a control system for the entire system is designed to adapt the production speed of the spin-drawing system S and the twisting device 15 so that there is always a sufficient supply of yarn G on the collecting and transporting device 14 to compensate for production disruptions or production irregularities.
- a storage or buffer for 10 to 15 minutes of production downtime may be sufficient to compensate for minor disruptions or the changing of the bobbins on the twisting device 15.
- FIG. 3 shows a collecting and transporting device 14, which is designed as a rotating drum 21 and can temporarily store the yarn G on the drum 21 via the number of windings.
- the speed of the drum 21 adapts to the exit speed of the yarn G from the treatment device 12 .
- An increased or reduced inlet speed of the yarn G into the twisting device 15 can be realized via a thread guide 22 which is arranged parallel to the axis of the drum 21.
- the number of turns of the yarn G on the drum 21 is controlled.
- This embodiment of a collecting and transporting device 14 is also used to store the yarn G in order to compensate for different speeds between the spin-drawing system S and the twisting device 15 .
- the drum 21 can also be heated or cooled, or alternatively be arranged in a housing 16 which is filled with a special atmosphere.
- FIG. 4 shows a further collecting and transport device 14, which comprises at least two cylinders 23, 24 spaced apart from one another, which can transport the yarn G further and store it temporarily.
- the yarn G always runs in turns around both cylinders 23, 24, which can be controlled in terms of their distance from one another and their rotational speed.
- This embodiment of a collecting and transporting device 14 is also used to store the yarn G in order to compensate for different speeds between the spin-drawing system S and the twisting device 15 .
- the cylinders 23, 24 can also be heated or cooled, or alternatively be arranged in a housing 16 which is filled with a special atmosphere.
- this collecting and transporting device 14 can have additional cylinders, that is to say more than two cylinders 23, 24, which can be controlled in terms of their distance from one another and their rotational speed.
- FIG. 5 shows a further exemplary embodiment of a collecting and transport device 14, which is designed as a store 25 with a first row of deflection rollers 26a and a second row of deflection rollers 26b, with the yarn G alternating between a deflection roller of the first row 26a and then wraps around a deflection roller of the second row 26b.
- the variable distance between the rows of deflection rollers 26a, 26b allows the yarn G to be stored and forwarded to the twisting device 15, thereby compensating for a difference in the speed of the yarn G from exiting the treatment device 12 to entering the twisting device 15.
- This memory 25 can also be arranged in a housing 16 which is filled with a special atmosphere.
- the deflection rollers 26a, 26b can also be heated or cooled.
- the spin-draw system S is operated at a lower take-off speed than in the prior art.
- the production speed of the spin-draw system is the same as or slightly higher than that of the twisting device 15.
- the production of the spin-draw system S is slowed down by a factor of about 15 to 30, which has prevented the experts from considering this with regard to the investment in a spin-draw system , since the price per tonne of yarn would have increased by almost the same factor.
- Due to the lower productivity or production speed however, the spin-draw system can be designed more simply, which reduces the investment costs. What is decisive, however, is that the entire handling and intermediate storage between the spin-drawing system S and the twisting device 15 is eliminated, which means that the method according to the invention pays off again in terms of operating costs.
- the invention has the advantage that, by means of the collecting and transporting device 14, a continuous process without interruption from the production of the endless filaments E to the twisted yarn is possible.
- the collecting and transporting device 14 can be designed to produce a difference in production between the spin-drawing system S and the twisting device 15 compensate.
- the collecting and transporting device 14 can be designed to further treat the yarn by means of gas or hot steam or by means of a temperature-controlled drum, cylinder or deflection rollers.
- the system can be operated without interruption in one line from liquid plastic to twisted yarn, which saves space and reduces storage capacity and handling costs. Compared to the prior art, the spin-draw system is operated with a lower capacity, but this is more cost-effective overall, since it is operated without interruption.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021133037.8A DE102021133037A1 (de) | 2021-12-14 | 2021-12-14 | Verfahren und Anlage zur Herstellung eines gezwirnten synthetischen Garns |
| PCT/EP2022/081471 WO2023110236A1 (de) | 2021-12-14 | 2022-11-10 | Verfahren und anlage zur herstellung eines gezwirnten synthetischen garns |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4448853A1 true EP4448853A1 (de) | 2024-10-23 |
Family
ID=84387708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22817584.0A Pending EP4448853A1 (de) | 2021-12-14 | 2022-11-10 | Verfahren und anlage zur herstellung eines gezwirnten synthetischen garns |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20250051970A1 (de) |
| EP (1) | EP4448853A1 (de) |
| JP (1) | JP2024544023A (de) |
| KR (1) | KR20240113979A (de) |
| CN (1) | CN118265817A (de) |
| AU (1) | AU2022415085A1 (de) |
| DE (1) | DE102021133037A1 (de) |
| WO (1) | WO2023110236A1 (de) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR774978A (fr) * | 1932-02-12 | 1934-12-17 | Procédé et dispositif pour la fabrication de crêpe | |
| US2333279A (en) * | 1942-05-02 | 1943-11-02 | Du Pont | Yarn handling |
| US4288977A (en) * | 1980-04-10 | 1981-09-15 | E. I. Du Pont De Nemours And Company | Process for making integrated racket strings from monofilaments |
| CN1078636C (zh) * | 1996-01-12 | 2002-01-30 | 里特机械公司 | 由长丝构成的不同颜色的单纱生产彩色纱线的方法和设备 |
| FR2775299B1 (fr) * | 1998-02-26 | 2000-03-17 | Icbt Roanne | Machine de filature et de texturation de fils par fausse torsion |
| JP2000129530A (ja) * | 1998-08-17 | 2000-05-09 | Toray Ind Inc | 合成繊維の製造法 |
| DE102006040065A1 (de) * | 2006-08-26 | 2008-02-28 | Oerlikon Textile Gmbh & Co. Kg | Verfahren zur thermischen Behandlung eines laufenden Garns sowie Zwirnmaschine zur Durchführung des Verfahrens |
| CN103156277B (zh) * | 2013-02-21 | 2015-07-15 | 南通大学 | 防捻补丝系统 |
| WO2019089951A1 (en) * | 2017-11-02 | 2019-05-09 | The Secant Group, Llc | Process and system for making poly(glycerol sebacate)/alginate continuous fibers, and yarns comprising a continuous poly(glycerol sebacate) fiber |
-
2021
- 2021-12-14 DE DE102021133037.8A patent/DE102021133037A1/de active Pending
-
2022
- 2022-11-10 US US18/719,040 patent/US20250051970A1/en active Pending
- 2022-11-10 KR KR1020247023554A patent/KR20240113979A/ko active Pending
- 2022-11-10 WO PCT/EP2022/081471 patent/WO2023110236A1/de not_active Ceased
- 2022-11-10 JP JP2024533256A patent/JP2024544023A/ja active Pending
- 2022-11-10 CN CN202280076628.2A patent/CN118265817A/zh active Pending
- 2022-11-10 EP EP22817584.0A patent/EP4448853A1/de active Pending
- 2022-11-10 AU AU2022415085A patent/AU2022415085A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JP2024544023A (ja) | 2024-11-26 |
| WO2023110236A1 (de) | 2023-06-22 |
| DE102021133037A1 (de) | 2023-06-15 |
| AU2022415085A1 (en) | 2024-05-30 |
| CN118265817A (zh) | 2024-06-28 |
| US20250051970A1 (en) | 2025-02-13 |
| KR20240113979A (ko) | 2024-07-23 |
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