Method for initiating a melt spinning, drawing and winding process, and apparatus for melt spinning, drawing and winding.

Abstract

The present invention provides a method and apparatus for reducing the risk of yarn breakage and / or resource consumption in a method for initiating melt spinning, drawing, and winding processes. [Solution] A method for initiating a melt spinning, drawing and winding process of at least one synthetic yarn (2), comprising: setting the yarn (2) extruded from a spinning nozzle (3) into a first lubrication device (4.1), a drawing device (5), a second lubrication device (4.2), and a winding machine (6); during setting, not supplying lubrication fluid by the first and / or second lubrication devices (4.1, 4.2), and / or supplying lubrication fluid by the first and / or second lubrication devices (4.1, 4.2) at a predetermined initial flow rate greater than the production flow rate specified for subsequent production of the yarn (2); and after setting, adjusting the initial flow rate of lubrication fluid in each lubrication device (4.1, 4.2) to the production flow rate.

Description

[Technical Field]

[0001] The present invention relates to a method for initiating a melt spinning, drawing and winding process, and to a melt spinning, drawing and winding apparatus for at least one synthetic yarn for carrying out such a method. [Background technology]

[0002] Such a melt spinning, drawing, and winding apparatus includes, in particular, a spinning nozzle, a first oiling device, a drawing device, a second oiling device, and a winding machine, the components of which are arranged in sequence to form a yarn path. During the melt spinning, drawing, and winding process, i.e., during yarn production, the yarn is extruded from the spinning nozzle, then moistened by the first oiling device with a first oiling fluid at a production flow rate, then drawn by the drawing device, then moistened by the second oiling device with a second oiling fluid at a production flow rate, and then wound by the winding machine. Drawing is preferably performed by a plurality of godets, in which case these godets are at least partially temperature-controlled. The yarn is preferably wound onto a winding tube that is rotated by the winding machine, thereby forming a package.

[0003] Prior to the production of yarn or the implementation of the melt spinning, drawing, and winding process, a method for initiating the melt spinning, drawing, and winding process must be implemented. In this method for initiating the melt spinning, drawing, and winding process, the yarn extruded from the spinning nozzle is fed into a first lubrication device, a drawing device, a second lubrication device, and a winding machine. The yarn that has just been extruded from the spinning nozzle is fed into the described units. The yarn has a number of filaments, in this case these filaments are extruded individually from the spinning nozzle, but in this case the filaments are fed together as yarn, for example, by a yarn gun.

[0004] In this method for starting the melt spinning, drawing and winding process, the yarn breaks according to its properties, and the in-process is unable to be completed without problems, and as a result, there is a risk that it has to be restarted newly. This increases the consumption of energy resources required to operate the units of the melt spinning, drawing and winding apparatus, particularly the consumption of resources of the materials used for the yarn, and in addition, the consumption of the first and second lubricating fluids also increases.

Summary of the Invention

Problems to be Solved by the Invention

[0005] Therefore, the underlying problem of the present invention is to provide a method for starting the melt spinning, drawing and winding process and a melt spinning, drawing and winding apparatus that reduce or eliminate the problems of the prior art, and in particular, it is required to reduce the risk of yarn breakage and / or resource consumption in the method for starting the melt spinning, drawing and winding process.

Means for Solving the Problems

[0006] This problem is first solved by the method for starting the melt spinning, drawing and winding process according to claim 1.

[0007] Further advantageous embodiments are the subject matter of the dependent claims.

[0008] More precisely, this problem is a method for starting the melt spinning, drawing and winding process of at least one synthetic yarn, wherein the yarn extruded from the spinning nozzle is fed to a first lubricating device, a drawing device, a second lubricating device, and a winding machine, and at the time of feeding, no lubricating fluid is supplied by the first and / or second lubricating device, and / or at the time of feeding, the lubricating fluid is supplied by the first and / or second lubricating device at a predetermined initial flow rate greater than the production flow rate specified for subsequent production of the yarn, and after feeding, the initial flow rate of the lubricating fluid of each lubricating device is adjusted to the production flow rate.

[0009] Thus, the risk of yarn breakage in the method for starting the melt spinning, drawing, and winding process is reduced. Furthermore, the resource consumption in the method for starting the melt spinning, drawing, and winding process is reduced only because there is almost no occurrence of yarn breakage. In particular, the consumption of the oil supply fluid can also be reduced if the oil supply fluid is not supplied by the first and / or second oil supply devices during startup. After startup, the flow rate of the oil supply fluid is changed from the initial flow rate to the production flow rate. Further units are also operated in an initial state, particularly for startup, and are changed to a production state after startup. In particular, the change in the state of the units to this production state and the change in the flow rate of both oil supply devices are adjusted to each other in terms of time, that is, with respect to the avoidance of yarn breakage and / or yarn rupture. For example, the rotational speed of the godet may be changed to the production state or the production flow rate simultaneously with the flow rate of one of the oil supply devices. On the other hand, it is also possible to change the rotational speed of the godet and the flow rate of one of the oil supply devices at least partially continuously. For example, in this case, first the flow rate of one of the oil supply devices or first the rotational speed of the godet is changed.

[0010] According to one embodiment of the method, during startup, the first oil supply fluid is not supplied, and during startup, the initial flow rate of the second oil supply fluid is greater than the production flow rate.

[0011] According to an alternative embodiment of the method, during startup, the second oil supply fluid is not supplied, and during startup, the initial flow rate of the first oil supply fluid is greater than the production flow rate.

[0012] According to a further alternative embodiment of the method, during startup, neither the first nor the second oil supply fluid is supplied.

[0013] According to a further alternative embodiment of the method, during startup, the initial flow rates of the first and second oil supply fluids are greater than the corresponding production flow rates.

[0014] Whether or not to supply lubrication fluid to each lubrication device during setup, or whether the initial flow rate of each lubrication fluid during setup is greater than the corresponding production flow rate, is determined considering the state of all units of the melt spinning, drawing, and winding equipment during setup and subsequent production, with a particular emphasis on minimizing the risk of yarn breakage.

[0015] According to a further embodiment of the method, the production flow rates of the first and second lubrication fluids are adjusted within a planned specified period Δt. The rate of change Q of the flow rates of the first and / or second lubrication fluids is such that the respective production flow rates Q tP From there, the corresponding initial flow rate Q tA This corresponds to the quotient obtained by subtracting and dividing the difference by the period. Therefore, the rate of change Q is given by the formula Q = (Q tP -Q tA It is calculated by ) / Δt.

[0016] In this way, the risk of thread breakage can be further reduced. In this case, the initial flow rate Q tA From production flow rate Q tP When the flow rate to the system is changed, a linear increase or decrease is achieved. This increase or decrease may be accompanied by a changing slope. In particular, the flow rate change over the period Δt is not discontinuous.

[0017] Preferably, the production flow rates of the first and second lubrication fluids are adjusted by pre-setting an intermediate value between the initial flow rate and the production flow rate.

[0018] This further reduces the risk of yarn breakage, particularly in the specified production conditions that the melt spinning, drawing, and winding units must achieve. Changes in flow rate are made in stages by setting intermediate values. Only after each intermediate value is achieved and maintained for a specified period is further change in flow rate made. Thereafter, the production flow rate is preset as the final value. Such intermediate values ​​make it easier to adjust the timing of flow rate changes to further modify the unit conditions, allowing for more flexible implementation. Between intermediate values, changes in flow rate are made, in particular, with linear changes or changes in flow rate with a changing slope.

[0019] More preferably, each lubrication fluid is supplied to the first and / or second lubrication device by a pump. The pump operates at a rate of 0.03 to 0.14 cm 3 Rotation, especially 0.05-0.12 cm 3 It has rotational capacity. The pump is operated at rotational speeds of 0 rpm to 72 rpm, especially 0 rpm to 66 rpm. Such a pump can achieve the flow rates required for normal melt spinning, drawing, and winding processes.

[0020] Advantageously, the pump speed is automatically adjusted by open-loop control and / or closed-loop control devices. For this purpose, the open-loop control and / or closed-loop control devices store the following parameters, namely the pump parameters corresponding to the initial flow rate, the absence of lubrication fluid supply, and / or the production flow rate.

[0021] Therefore, the transition from initial flow rate to production flow rate can be easily and quickly achieved. In particular, the open-loop control and / or closed-loop control device stores a corresponding target rotational speed for the pump. In this case, the automatic adjustment of the pump rotational speed involves controlling the pump's drive device, such as an electric motor, which is then supplied with current based on the target rotational speed by a closed-loop control algorithm also stored in the open-loop control and / or closed-loop control device.

[0022] According to one embodiment of the method, the yarn is moistened with a first lubrication fluid having undiluted oil by a first lubrication device.

[0023] According to one embodiment of the method, the yarn is moistened by a second lubrication device with a second lubrication fluid having an oil-water emulsion with a proportion of 0-50% water.

[0024] Thus, when the supply of undiluted oil by the first lubrication device and the supply of an oil-water emulsion containing 0-50% water by the second lubrication device are specifically combined, the risk of thread breakage increases if the corresponding production flow rate is already supplied to the thread at the time of setup. In other words, especially with this combination of lubrication fluids, a significant reduction in the risk of thread breakage can be achieved by the method according to the present invention.

[0025] The fundamental problem of the present invention can also be solved by the melt spinning, drawing and winding apparatus for at least one synthetic yarn described in claim 10.

[0026] More precisely, the problem is solved in this case by a melt spinning, drawing and winding apparatus for at least one synthetic yarn for carrying out the method described above, wherein a spinning nozzle, a first lubrication device, a drawing device, a second lubrication device, and a winding machine are arranged in sequence to form a yarn path.

[0027] Melt spinning, drawing, and winding equipment is used, in particular, to produce fully drawn synthetic yarns, so-called FDY (full drawn yarn), especially for textile applications. However, melt spinning, drawing, and winding equipment may also produce fully drawn synthetic yarns for engineering applications, i.e., so-called IDY (industrial yarn). However, it is also possible to produce pre-drawn yarns, i.e., so-called POY (partially drawn yarn), or highly oriented yarns, i.e., so-called HOY (highly drawn yarn). Subsequently, by a method for initiating the melt spinning, drawing, and winding process to be carried out by the melt spinning, drawing, and winding equipment, yarn breakage during initiation in the types of yarns described in particular can be avoided without problems.

[0028] Preferred embodiments are described in detail below with reference to the attached drawings. [Brief explanation of the drawing]

[0029] [Figure 1] This is a schematic side view of an embodiment of a melt spinning, drawing and winding apparatus for at least one synthetic yarn, for carrying out a method for initiating a melt spinning, drawing and winding process. [Modes for carrying out the invention]

[0030] Figure 1 shows the melt spinning, drawing and winding apparatus 1 during production or the melt spinning, drawing and winding process, that is, the melt spinning, drawing and winding apparatus 1 in which the method for starting the melt spinning, drawing and winding process is being carried out without any problems.

[0031] The melt spinning, drawing and winding device 1 for at least one synthetic yarn 2 has, in particular, a spinning nozzle 3, a first oiling device 4.1, a drawing device 5, a second oiling device 4.2 and a winding machine 6, and these components are arranged continuously to form a yarn path. A first oiling fluid can be supplied to the first oiling device 4.1 by a first pump 7.1, and this first pump 7.1 can be driven by its motor 9.1. A second oiling fluid can be supplied to the second oiling device 4.2 by a second pump 7.2, and this second pump 7.2 can be driven by its motor 9.2. In contrast, other forms of supply of the oiling fluid, such as supply by gravity from a container and via a correspondingly interposed valve, are also possible.

[0032] In a method for starting the melt spinning, drawing and winding process of at least one synthetic yarn 2, the yarn 2 extruded from the spinning nozzle 3 is fed to the first oiling device 4.1, the drawing device 5, the second oiling device 4.2 and the winding machine 6.

[0033] During feeding, no oiling fluid is supplied by the first and / or second oiling devices 4.1, 4.2 and / or during feeding, the oiling fluid is supplied by the first and / or second oiling devices 4.1, 4.2 with a predefined initial flow rate Q tA and in this case, this initial flow rate Q tA is greater than the production flow rate Q tP This production flow rate Q tP is specified for the production of the yarn 2 following the start of the melt spinning, drawing and winding process. After feeding, the initial flow rate Q tA of the oiling fluid of each oiling device 4.1, 4.2 is adjusted to the production flow rate Q tP .

[0034] The flow rate of each oiling fluid is changed from the initial flow rate Q tA to the production flow rate Q tP . Instead of the flow rate, the volume flow rate may also be mentioned.

[0035] Methods for initiating melt spinning, drawing, and winding processes include, in particular, The steps include: • The yarn 2 from the spinning nozzle 3 is preferably collected by a yarn gun, - Thread 2 is placed in the first lubrication device 4.1, and then thread 2 is brought into contact with the first lubrication device 4.1 to guide and / or the first lubrication device 4.1 to provide the initial flow rate Q of the first lubrication fluid. tA The step of wetting with, The steps include: setting the thread 2 onto a stretching device 5 equipped with at least one godet 5.1-5.6 that rotates at the setting speed, - Thread 2 is placed in the second lubrication device 4.2, and then thread 2 is brought into contact with the second lubrication device 4.2 to guide and / or the second lubrication device 4.2 to pass the initial flow rate Q of the second lubrication fluid. tA The step of wetting with, The step of setting the thread 2 onto two variable rollers 6.1 and 6.2 of the winding machine 6, which rotate at the setting speed, The steps include: placing the thread 2 onto the winding tube 10, which rotates at the winding speed by the winding machine 6 during the rigging process; and then winding the thread 2 onto the winding tube 10 to form the package 11; The step of changing the rotation speed of the winding tube 2 from its setting speed to the production speed of the winding tube 2, The step of changing the rotation speed of the deflection rollers 6.1 and 6.2 from their set speed to the production speed of the deflection rollers 6.1 and 6.2, The step of changing the rotation speed of Godet 5.1~5.6 from its setting speed to the production speed of Godet 5.1~5.6, • The flow rate of each lubrication fluid in the first and second lubrication devices 4.1 and 4.2 is determined by the initial flow rate Q. tA From each production flow rate Q tP Change to or not supply lubrication fluid to each production flow rate Q tP The step involves changing the flow rate of each lubrication device 4.1, 4.2, and before changing the flow rate of each, the lubrication fluid is not supplied to each lubrication device 4.1, 4.2 or the initial flow rate Q is changed. tA However, the corresponding production flow rate Q tP Larger steps, It has.

[0036] During the start-up phase, for example, the first lubrication fluid is not supplied, and during the start-up phase, the initial flow rate Q of the second lubrication fluid is also... tA Production flow rate Q tP It is larger than that.

[0037] Alternatively, during ignition, the second lubrication fluid is not supplied, and in this case, the initial flow rate Q of the first lubrication fluid is also supplied. tA Production flow rate Q tP It is larger than that.

[0038] Alternatively, during engagement, the first and second lubrication fluids are not supplied.

[0039] Alternatively, during setup, the initial flow rates Q of the first and second lubrication fluids are... tA However, the corresponding production flow rate Q tP It is larger than that.

[0040] Furthermore, during setup, the first lubrication fluid is not supplied, or the initial flow rate Q of the first lubrication fluid is not supplied. tA However, the corresponding production flow rate Q tP Larger than the second lubrication fluid, the initial flow rate Q is arbitrary. tA It can also be supplied via [method / service].

[0041] Furthermore, during setup, the second lubrication fluid is not supplied, or the initial flow rate Q of the second lubrication fluid is not supplied. tA However, the corresponding production flow rate Q tP Larger than the initial flow rate Q of the first lubrication fluid tA It can also be supplied via [method / service].

[0042] Production flow rate Q of the first and second lubrication fluids tP The adjustment is made within the planned specified period Δt. The rate of change Q of the flow rate of the first and / or second lubrication fluid is the respective production flow rate Q tP From there, the corresponding initial flow rate Q tAThis corresponds to the quotient obtained by subtracting the difference and dividing it by the period Δt. The rate of change Q is given by the formula Q = (Q tP -Q tA It is calculated by ) / Δt.

[0043] In this case, the rate of change Q is constant over the period Δt. In other words, the initial flow rate Q tA From production flow rate Q tP The flow rates of the first and second lubrication fluids are changed linearly. However, if it is significant to avoid thread breakage and / or to reduce the period Δt, the rate of change Q may have a value that changes over the period Δt.

[0044] Production flow rate Q of the first and second lubrication fluids tP The adjustment is the initial flow rate Q tA and production flow rate Q tP This may be done by pre-setting an intermediate value between the two. In this case, the graph of the flow rate over the period Δt has a stepped or staircase shape. If no lubrication fluid is supplied at start-up, a gradually rising intermediate value is pre-set. If lubrication fluid is supplied at start-up, the production flow rate Q tP A larger initial flow rate Q tA When supplied, a gradually decreasing intermediate value is set. Between the two intermediate values, the flow rate is changed at an equal rate of change Q or a varying rate of change Q.

[0045] Each lubrication fluid is supplied to the first and / or second lubrication devices 4.1, 4.2 by pumps 7.1, 7.2. Pumps 7.1, 7.2 are pumped at a rate of 0.03–0.14 cm 3 Rotation, especially 0.05-0.12 cm 3 It has rotational capacity. Pumps 7.1 and 7.2 operate at rotational speeds of 0 rpm to 72 rpm, especially at rotational speeds of 0 rpm to 66 rpm.

[0046] The open-loop control and / or closed-loop control device 8 automatically sets the flow rate at startup, i.e., the initial flow rate Q. tAThe flow rate of each specified flow rate for producing yarn 2, i.e., production flow rate Q, is adjusted or the respective lubrication fluid is not supplied. tP Each change in the flow rate to the respective terminals is automatically performed by the open-loop control and / or closed-loop control device 8.

[0047] In this case, the rotational speed of pumps 7.1 and 7.2 is automatically adjusted by the open-loop control and / or closed-loop control device 8. For this purpose, the open-loop control and / or closed-loop control device 8 has the following parameter, namely the initial flow rate Q tA , not supplying lubrication fluid and / or production flow rate Q tP The parameters for the corresponding pumps 7.1 and 7.2 are stored here.

[0048] In the open-loop control and / or closed-loop control device 8, multiple parameters are grouped together, or in other words, a recipe. The recipe, or production recipe, is, for example, the production flow rate Q. tP It has the parameters for the corresponding pumps 7.1 and 7.2, and further parameters for realizing the state of further units of the melt spinning, drawing, and winding device 1. Further recipes include, for example, the initial flow rate Q tA The pumps 7.1 and 7.2 have parameters for either not supplying lubrication fluid or for not supplying lubrication fluid, and further parameters for achieving the state of further units of the melt spinning, drawing and winding device 1 at the start of the melt spinning, drawing and winding device 1.

[0049] The parameters for transitioning from the initial state to the production state may be stored in a further recipe or may be part of the production recipe. This transition occurs after the successful loading of the yarn 2 to the winding machine 6, in which case the transition is initiated, for example, by an operator input to the open-loop control and / or closed-loop control device 8. The success of loading the yarn 2 may also be detected by a sensor, thereby allowing the transition to be initiated based on the sensor signal, which is particularly advantageous when the loading of the yarn 2 is performed by a robot and / or at least partially automated. Loading the yarn 2 is often performed by an operator who operates a yarn gun to draw in the yarn, then loads the yarn 2 onto the winding machine 6, particularly the winding tube 10, and then cuts it.

[0050] The thread 2 is moistened by the first lubrication device 4.1 with a first lubrication fluid having undiluted oil. Alternatively, the thread 2 may be moistened by the first lubrication device 4.1 with a first lubrication fluid having an oil-water emulsion with 30-100% undiluted oil. During setup and production, the same first lubrication fluid is supplied by the first lubrication device 4.1.

[0051] The thread 2 is moistened by a second lubrication device 4.2 with a second lubrication fluid having an oil-water emulsion with a water content of 0-50%. During setup and production, the same second lubrication fluid is supplied by the second lubrication device 4.2.

[0052] The melt spinning, drawing, and winding apparatus 1 shown in Figure 1 allows for the simultaneous production of multiple yarns 2, in which case, for example, five yarns 2 are shown in the figure. During production, these multiple yarns 2 are extruded from adjacent spinning nozzles 3 held within a common spinning beam. Preferably, each yarn 2 is provided with one first lubrication device 4.1. The multiple yarns 2 are guided together as a yarn group by the drawing apparatus 5, particularly its godettes 5.1-5.6. Preferably, each yarn 2 is provided with one second lubrication device 4.2, which are arranged side by side to form a group lubrication device. Alternatively, there may be only one second lubrication device 4.2 for multiple yarns 2. Multiple threads 2 are wound side by side by the winding machine 6, thereby forming one package 11 for each thread. In this case, multiple winding tubes 10, i.e., one winding tube for each thread 2, are held side by side by the winding spindle of the winding machine 6 and rotated.

[0053] In this case, the described method for initiating the melt spinning, drawing, and winding processes is preferably performed simultaneously for multiple synthetic yarns 2. [Explanation of Symbols]

[0054] 1. Melt spinning, drawing, and winding apparatus 2 threads 3. Spinning nozzle 4.1 First refueling device 4.2 Second refueling device 5 Stretching device 5.1 First Godet of the stretching device 5 5.2 Second Godet of the stretching device 5 5.3 Third Godet of Stretching Device 5 5.4 Fourth Godet of the stretching device 5 5.5 Fifth Godet of the Stretching Device 5 5.6 The sixth godet of the stretching device 5 6. Winding machine 6.1 First deflection roller of winding machine 6 6.2 Second deflection roller of winding machine 6 7.1 First pump 7.2 Second pump 8 Open-loop control and / or closed-loop control device 9.1 First pump motor 7.1 9.2 Second pump motor 7.2 10-winding tube 11 packages Δt period Q tA Initial flow rate Q tP Production flow rate Q: Rate of change of flow rate

Claims

1. A method for initiating a melt spinning, drawing and winding process of at least one synthetic yarn (2), wherein the yarn (2) extruded from a spinning nozzle (3) is fed into a first lubrication device (4.1), a drawing device (5), a second lubrication device (4.2), and a winding machine (6), wherein, during feeding, the first and / or second lubrication devices (4.1, 4.2) do not supply lubrication fluid, and / or, during feeding, the first and / or second lubrication devices (4.1, 4.2) supply lubrication fluid at a production flow rate (Q) specified for subsequent production of the yarn (2). ｔＰ A predetermined initial flow rate (Q) that is greater than ) ｔＡ ) is supplied, and after setting, the initial flow rate (Q) of the lubrication fluid of each lubrication device (4.1, 4.2) is set. ｔＡ ) the production flow rate (Q ｔＰ A method for adjusting it to ).

2. During setup, the first lubrication fluid is not supplied, and during setup, the initial flow rate (Q) of the second lubrication fluid is... ｔＡ ) is the aforementioned production flow rate (Q ｔＰ The method according to claim 1, characterized in that it is larger than ).

3. During setup, the second lubrication fluid is not supplied, and during setup, the initial flow rate (Q) of the first lubrication fluid is not supplied. ｔＡ ) is the aforementioned production flow rate (Q ｔＰ The method according to claim 1, characterized in that it is larger than ).

4. Adjust the production flow rate (Q ｔＰ ) of the first and second fueling fluids within a range of a planned specified period (Δt), and the change rate (Q) of the flow rate of the first and / or second fueling fluids is such that the difference obtained by subtracting the corresponding initial flow rate (Q ｔＰ ) from each of the production flow rates (Q ｔＡ ) is equivalent to the quotient obtained by dividing by the period (Δt), that is, the change rate (Q) is calculated by the formula Q = (Q ｔＰ - Q ｔＡ ) / Δt. The method according to at least one of claims 1 to 3, characterized in that.

5. The production flow rate (Q) of the first and second lubrication fluids. ｔＰ The adjustment of the initial flow rate (Q) ｔＡ ) and the aforementioned production flow rate (Q ｔＰ The method according to at least one of claims 1 to 4, characterized in that it is carried out by pre-setting an intermediate value between ) and ).

6. Each of the aforementioned lubrication fluids is supplied to the first and / or second lubrication devices (4.1, 4.2) by pumps (7.1, 7.2), and the pumps (7.1, 7.2) pump the fluid at a rate of 0.03 to 0.14 cm. ３ Rotation, especially 0.05-0.12 cm ３ The method according to at least one of claims 1 to 5, characterized in that it has rotational capacity and operates the pump (7.1, 7.2) at a rotational speed of 0 rpm or more to 72 rpm, particularly at a rotational speed of 0 rpm or more to 66 rpm.

7. The rotational speed of the pumps (7.1, 7.2) is automatically adjusted by the open-loop control and / or closed-loop control device (8), and for this purpose, the following parameters are set in the open-loop control and / or closed-loop control device (8), namely the initial flow rate (Q ｔＡ ), not supplying lubrication fluid and / or the production flow rate (Q ｔＰ The method according to claim 6, characterized in that the parameters of the pumps (7.1, 7.2) corresponding to ) are stored.

8. The method according to at least one of claims 1 to 7, characterized in that the yarn (2) is moistened with a first lubrication fluid having undiluted oil by the first lubrication device (4.1).

9. The method according to at least one of claims 1 to 8, characterized in that the yarn (2) is moistened with a second lubrication fluid having an oil-water emulsion with a water content of 0 to 50% by the second lubrication device (4.2).

10. A melt spinning, drawing and winding apparatus (1) for at least one synthetic yarn (2) for carrying out the method according to any one of claims 1 to 9, wherein a spinning nozzle (3), a first lubrication device (4.1), a drawing device (5), a second lubrication device (4.2), and a winding machine (6) are arranged in series to form a yarn path.

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