Method for producing winding bobbin from synthetic yarn

Abstract

The invention relates to a method and a device for producing a winding bobbin (13) from a synthetic yarn (12). According to the invention, a plurality of filaments (120) are extruded from a plastic melt, which filaments are combined to form a synthetic yarn (12) and wetted with a first liquid (27) during the combination, the synthetic yarn being drawn by godets (20.1-20.2) and being wound by a winding device (100) to form a wound bobbin (13). In order to remove the winding bobbin (13) from the winding device (100), a loose yarn end (31) of the winding bobbin (13) is fixed to the winding bobbin (13) with a second liquid (28).

Description

[0001] The present invention relates to a method and an apparatus for producing winding bobbins from synthetic yarns, as described in the preambles of claim 1 or claim 10.

[0002] In the production of synthetic yarns, the yarns made from polymer melts are drawn and processed and then wound onto winding bobbins. These winding bobbins are used for storing the yarns and are then fed into subsequent processing operations.

[0003] The winding bobbin has a sleeve onto which the synthetic yarn is wound by a winding device. To ensure that the extrusion and production of the yarn can be carried out continuously during the melt spinning process, the yarn is continuously wound onto the winding bobbin without major interruptions.

[0004] For this purpose, the above-mentioned winding device is used, which has two winding spindles protruding from a rotatably mounted winding turret.

[0005] By rotating the winding turret, the winding spindles can be alternately moved into a winding position and a removal position. In the winding position, the yarn is wound onto the corresponding winding spindle to form a winding bobbin.

[0006] Once the winding bobbin has reached a predetermined final diameter, the winding spindle together with the winding bobbin is moved into the removal position. In this case, the yarn is wound around the circumference of the winding bobbin to form a final winding section and is then captured and cut by the winding spindle held in the winding position. In the winding position, the yarn is then wound onto a new winding bobbin.

[0007] After the winding spindle has been decelerated, the winding bobbin held in the removal position is removed from the winding spindle and fed into subsequent processing operations. The loose yarn end produced at the final winding section must be as close as possible to the circumference of the winding bobbin to prevent any undesired unwinding during the removal of the winding bobbin from the winding spindle and during transportation.

[0008] To directly fix the loose yarn end to the circumference of the winding bobbin during bobbin change, a winding device of this type is known from DE 4413885A1, in which a yarn end fixing application device is assigned to the winding spindle, which device has a nozzle for wetting the yarn with water or a preparation medium.

[0009] During bobbin change, the nozzle is guided to the yarn wound as the final winding section. It is then wetted before the yarn is cut to ensure that the yarn adheres as tightly as possible to the circumference of the winding bobbin. To assist this process, the yarn end fixing application device can have a pressure roller placed on the circumference of the winding bobbin. The water or sizing agent used must ensure that the loose yarn end can be fixed adequately.

[0010] Accordingly, it is an object of the present invention to provide a method and a device by means of which a loose yarn end can be securely fixed to a winding bobbin.

[0011] Regarding the method, this object is achieved by a method having the features as described in claim 1.

[0012] Regarding the device, this object is achieved according to the present invention by a device having the features as described in claim 10.

[0013] According to one aspect of the present invention, there is provided a method for producing a winding bobbin with a synthetic yarn, wherein a plurality of filaments are extruded from a plastic melt, these filaments are combined to form a synthetic yarn, and are wetted with a first liquid during the combination, wherein the synthetic yarn is drawn by a godet roller and wound onto a winding bobbin by a winding device. In order to remove the winding bobbin from the winding device, a loose yarn end of the winding bobbin is fixed to the winding bobbin with a second liquid.

[0014] This allows the secure fixing of the loose yarn end, while the yarn to be produced is well finished with a so-called sizing agent before winding, and provides additional protection for the safe removal and transportation of the winding bobbin after winding.

[0015] According to one configuration of the method, before removing the winding bobbin, the yarn is cut, and after cutting, the second liquid is applied to the knitting point of the winding bobbin.

[0016] This allows the second liquid to be precisely and accurately positioned and applied to the winding bobbin. Since the second liquid is applied to the corresponding final winding part of the winding bobbin, this can be carried out systematically and regularly at the same position.

[0017] According to another configuration of the method, the first liquid used for combining a plurality of filaments into one yarn is different from the second liquid used for fixing the loose yarn end.

[0018] This provides the advantage that in each case the best liquid can be used to finish and fix the yarn or the loose yarn end.

[0019] According to another configuration of the method, the first liquid used for combining a plurality of filaments into one yarn is the same as the second liquid used for fixing the loose yarn end.

[0020] This provides the advantage that different liquids do not need to be stored differently, which requires additional tanks and / or additional mixing and checking of another liquid.

[0021] Furthermore, if only one liquid is used for oiling and fixing loose yarn ends, there is a corresponding potential for liquid savings.

[0022] According to another configuration of the method, the first liquid for combining multiple filaments into one yarn is supplied continuously, while the second liquid for fixing loose yarn ends is supplied discontinuously.

[0023] According to the method steps, the respective liquids need to be supplied differently at corresponding positions. The first liquid for combining filaments and oiling must be supplied continuously during the manufacturing process and during the extrusion of filaments from the melt to ensure reliable production. In contrast, the fixing of loose yarn ends is not continuous but depends on the removal process from the winding device. The supply of this liquid (also called the second liquid) can therefore be interrupted when there is no need to fix the yarn ends and is thus supplied discontinuously.

[0024] According to another configuration of the method, the first liquid and / or the second liquid is used as a lubricant, an anti-sticking agent, and / or an anti-static inhibitor. The first and second liquids are composed in such a way that the supply, unwinding, and winding of the yarn can be carried out without problems. The first liquid is preferably used for finishing.

[0025] For this purpose, the corresponding liquid is used as a lubricant to prevent possible friction on the corresponding components of the winding device. In addition, the first or second liquid is also used as an anti-sticking agent, so that sticking during winding or unwinding can be prevented.

[0026] Furthermore, the liquid is also used as an anti-static inhibitor, which prevents the static charge of the yarn so that it can be wound and unwound without problems.

[0027] According to another configuration of the method, the first liquid has an emulsion containing water and oil.

[0028] The emulsion of water and oil is particularly advantageous for oiling when combining multiple filaments into one yarn. In particular, the combination of oil and water is used as a lubricant, an anti-sticking agent, and an anti-static inhibitor.

[0029] According to another configuration of the method, the second liquid contains water, an adhesive, a bonding agent, or an emulsion containing water and oil.

[0030] The second liquid for fixing the loose yarn ends to the winding bobbin should enable the loose yarn ends to adhere particularly well to the winding bobbin.

[0031] For example, water, a suitable adhesive, a bonding agent, and / or an emulsion of the first liquid can be used. Each composition has certain advantages and can also be adapted to the corresponding yarn type.

[0032] In the case of another configuration of the method, depending on the yarn to be produced, in particular IDY, POY, FDY, HOY, BCF, the composition of the first liquid and / or the second liquid is different.

[0033] IDY (Industrial Yarn) is also known as industrial yarn, BCF (Bulk Continuous Filament) is known as carpet yarn, POY (Pre Oriented Yarn) is known as pre-oriented yarn, FDY (Full Drawn Yarn) is known as fully drawn yarn, and HOY (High Oriented Yarn) is known as high-oriented yarn.

[0034] Depending on the type of yarn used or the yarn type, the filament melt requires different plastics and plastic compositions, which also results in corresponding differences in the yarn count. Therefore, special liquid compositions are also required for oiling or for fixing the loose yarn ends to the winding bobbin. The yarn count can also affect the required amount of the corresponding liquid needed for oiling and fixing the loose yarn ends.

[0035] According to another aspect of the present invention, there is provided an apparatus for producing a winding bobbin with a synthetic yarn, which is particularly designed to perform the method as described in at least one of the foregoing configurations.

[0036] The apparatus has a spinning device for extruding a plurality of filaments from a plastic melt, the filaments being combined into a single yarn through a preparation nozzle, wherein the plurality of filaments are wetted by a first liquid through the preparation nozzle, and a winding device for winding the yarn from the spinning device onto a winding bobbin, wherein the winding device has a winding mandrel and a traverse device for forming the winding bobbin and a yarn end fixing application device. The preparation nozzle is supplied with the first liquid, and the yarn end fixing application device is supplied with the second liquid.

[0037] This provides the advantage that both the spinning device and the winding device are supplied with their respective optimal liquids. Depending on the yarn to be finished or fixed, the optimal liquid can be used.

[0038] According to one configuration of the apparatus, the first liquid is continuously supplied to the preparation nozzle through a first supply line, and the second liquid is discontinuously supplied to the yarn end fixing application device through a second supply line.

[0039] Since during the extrusion of the plurality of filaments, the processing and production of the filaments are carried out continuously, the first liquid also needs to be continuously supplied, while the yarn end fixing is only required after a predetermined winding time, so it has interruptions and is carried out discontinuously.

[0040] Therefore, different supply of the first liquid and the second liquid is required at the corresponding preparation nozzle or at the yarn end fixing application device.

[0041] According to another configuration of the device, the first liquid and the second liquid are arranged in a common liquid distributor or in different liquid distributors of the preparation nozzle and / or the yarn end fixing application device. This provides the advantage that only one liquid distributor is required for the same liquid, and separation into different liquid distributors can prevent unwanted mixing of the liquids.

[0042] The method according to the invention and the device according to the invention will be explained in more detail below using relevant exemplary embodiments with reference to the attached drawings.

[0043] In the figure:

[0044] Figure 1 Schematically showing a front view of an exemplary embodiment of a winding device with a yarn end fixing application device

[0045] Figure 2 schematically shows a side view of an exemplary embodiment of a spinning apparatus with a preparation nozzle, and

[0046] Figure 3 A circuit diagram is shown for indicating the method steps for producing a bobbin with synthetic yarn.

[0047] exist Figure 1 In the embodiment of the winding device 100 for continuously winding the yarns 12.1 to 12.3 is shown in a front view and Figure 2 In FIG. 2 , an embodiment of a spinning device 200 is schematically shown in a side view.

[0048] Figure 1 The exemplary embodiment of a winding device 100 shown in FIG. 1 winds the yarns 12 . 1 to 12 . 3 produced by a spinning device 200 into a winding bobbin 13 at winding points 4 . 1 to 4 . 3 .

[0049] In the following, the winding point 4.1 and the associated position of the yarn 12.1 will be described in particular, since the winding points 4.2 to 4.3 and the associated positions on the spinning device 200 are formed identically.

[0050] In addition, Figure 1 and Figure 2 A reference coordinate system with XYZ directions is shown in , which is intended to clarify the respective views. Figure 1 The reference coordinate system XYZ in illustratively shows the longitudinal extent of the winding device 100 in the X direction, the depth extent of the winding device 100 in the Y direction, and the height extent of the winding device 100 in the Z direction.

[0051] Figure 2 The reference coordinate system XYZ therein shows the longitudinal extent of the spinning device 200 in the X direction, the depth extent of the spinning device 200 in the Y direction, and the height extent of the spinning device 200 in the Z direction.

[0052] The winding device 100 is located below the spinning device 200 in the Z direction so that the yarns 12.1 to 12.3 produced by the spinning device 200 can be wound by the winding device 100 at the relevant winding points 4.1 to 4.3.

[0053] Figure 1 The winding device 100 shown therein has a winding turret 2 which carries two cantilever-mounted and rotatably mounted winding spindles 3.1 and 3.2.

[0054] The winding spindles 3.1 and 3.2 are arranged offset from each other by 180° on the winding turret 2. Spindle motors (not shown) are assigned to the winding spindles 3.1 and 3.2 on the back of the winding turret 2. The winding turret 2 is rotatably mounted in the frame 1 and is coupled to a turret drive device (not shown). By means of this turret drive device, the winding spindles 3.1 and 3.2 can be alternately pivoted to the winding position and the removal position by the winding turret 2.

[0055] In the unwinding position, the winding spindles 3.1 and 3.2 alternately interact with the pressure roller 5 and the winding points 4.1 to 4.3. In this exemplary embodiment, a total of three winding points 4.1 to 4.3 are arranged side by side in the X direction in the frame. The winding points 4.1 to 4.3 are implemented to be the same, so the following description will describe the winding point 4.1 in more detail.

[0056] The winding point 4.1 has a traversing device 8 which is arranged upstream of the head guide 11 for supplying the yarns 12.1 to 12.3. Between the traversing device 8 and the winding spindles 3.1 and 3.2, the pressure roller 5 is rotatably mounted on a roller bracket 6. The roller bracket 6 is pivotally coupled to the frame 1. In order to lay the yarns 12.1 to 12.3 on the circumference of the winding bobbin 13 at the relevant winding points 4.1 to 4.3, the traversing device 8 has a traversing device (not shown in detail) for guiding the respective yarns 12.1 to 12.3 back and forth at the relevant winding points 4.1 to 4.3.

[0057] For this purpose, the traversing device 8 is coupled to a traversing drive device 9 (not shown).

[0058] A replaceable cutting device 14 is located between the winding spindles 3.1 and 3.2 on the frame 1, and this cutting device 14 guides and cuts the yarn 12 at the winding point 4.1 and the adjacent yarns 12.2 to 12.3 at the winding points 4.2 and 4.3 during bobbin change. AtFigure 1 In the case shown, the bobbin change is carried out between the winding spindles 3.1 and 3.2. Therefore, the winding spindle 3.1 is in the removal position with respect to a plurality of winding bobbins 13, while the winding spindle 3.2 is in the winding position for winding a new bobbin. The replaceable cutting device 14 is pivoted between the winding spindles 3.1 and 3.2 and has cut the yarns 12.1 to 12.3, thereby forming loose yarn ends 31 on the respective winding bobbins 13.

[0059] Such a replaceable cutting device 14 is also found in DE 10 200 900 77 59A1. In this regard, this citation document is hereby incorporated by reference and no further explanation is made.

[0060] In addition to the replaceable cutting device 14, a yarn end fixing application device 15 is provided, which is laterally held on the machine frame 1.

[0061] As Figure 1 shown, the yarn end fixing application device 15 has a bracket 18 in a fixed position so that through this bracket 18, a yarn fixing liquid (hereinafter also referred to as the second liquid 28) can be applied to the winding bobbins 13 mounted on the respective winding spindles 3.1 and 3.2 at the joining point WS by means of a liquid applicator 19. The joining point WS is preferably located on the final winding portion 29 of the winding bobbin 13.

[0062] The bracket 18 is held in a pivot arm 17, which can be moved back and forth between a rest position and the shown operating position by a moving actuator 16.

[0063] The pivot arm 17 is pivotally mounted on the machine frame 1. In Figure 1 the shown figure, the pivot arm 17 with the bracket 18 is in the operating position and fixes the loose yarn end 31 to the winding bobbin 13 at the joining point WS. The second liquid 28 for fixing the loose yarn end 31 to the winding bobbin 13 is provided in a liquid dispenser 33, which is connected to the yarn end fixing device 15 via the first supply line 50 through the bracket 18 so that the second liquid 28 can be supplied to the yarn end fixing device 15 regularly.

[0064] Figure 1 A further exemplary embodiment is also shown, in which the second liquid 28 stored in the liquid dispenser 33 is connected to the preparation nozzles 42.1 to 42.3 of the spinning device 200 via a third supply line 53 so that the preparation nozzles 42.1 to 42.3 can also be supplied with the second liquid 28 for yarn end fixing.

[0065] The third supply line 53 is only required when a single liquid dispenser is provided for the winding device 100 and the spinning device 200.

[0066] Figure 2 A side view of the spinning device 200 along the longitudinal direction X is schematically shown. The spinning device 200 is also shown in two embodiments. In one exemplary embodiment, a third supply line 53 for supplying a first liquid 27 for oiling to the preparation nozzles 42.1 to 42.3 is connected to a liquid distributor 33 of the winding device 100, and the liquid distributor 33 supplies a second liquid 28 to the liquid application device 15.

[0067] In Figure 2 the exemplary embodiment shown, a first supply line 51 is also connected to the preparation nozzles 42.1 to 42.3 for applying the first liquid 27 provided in the liquid distributor 34.

[0068] In addition, a third embodiment is also shown here, in which the preparation nozzles 42.1 to 42.3 are supplied with the first liquid 27 for oiling and the second liquid for yarn end fixing from the liquid distributor 33 and the liquid distributor 34.

[0069] The spinning device 200 has a spinning beam 40 for extruding a plastic melt into filaments 120. The spinning beam 40 has a plurality of spinnerets 41.1 to 41.3, through the capillaries of which the plastic melt supplied via the spinning pumps 44.1 to 44.3 is extruded into filaments 120.

[0070] The filaments 120 are combined into a single yarn 12.1 to 12.3 at the respective preparation nozzles 42.1 to 42.3 and are guided to the winding device 100 through the thread guides 43.1 to 43.3. The winding device 100 draws and guides the yarns 12.1 to 12.3 through the associated drafting godet rollers 20.1 to 20.2.

[0071] In the case of POY yarns, the drafting godet rollers 20.1 to 20.2 can be arranged in pairs. When producing other yarns such as IDY, FDY, BCF, and HOY, additional godet rollers for temperature adjustment and stretching of the respective yarns 12.1 to 12.3 may be required.

[0072] To cool the plastic melt or the filaments 120, a cooling device 45 is also shown, through which cooling air is supplied to the filaments so that they can also be drawn through the godet rollers 20.1 to 20.2 and have sufficient strength.

[0073] Through the respective preparation nozzles 42.1 to 42.3, multiple filaments 120 are combined into a single yarn 12.1 to 12.3, and the yarn is sent to the winding device 100 through the respective thread guides 43.1 to 43.3.

[0074] Drafting or supply is carried out towards the winding device through the godet rollers 20.1 to 20.2.

[0075] In the case of FDY yarn, additional godet rollers are required to temper and stretch the yarn 12.1 accordingly. This also applies to HOY, IDY, and BCF yarns. Only in the case of POY, two godet rollers 20.1 to 20.2 are sufficient.

[0076] The individual preparation nozzles 42.1 to 42.3 receive a first liquid 27 from a liquid distributor 34 via a first supply line 51.

[0077] In another exemplary embodiment, the preparation nozzles 42.1 to 42.3 are specifically supplied via a supply line 53 that is connected to the liquid distributor 33 or the liquid distributor 34, which provides a second liquid 28 that is also used for yarn end fixing by the yarn end fixing application device 15.

[0078] In a third exemplary embodiment, the preparation nozzles 42.1 to 42.3 are supplied both via a third supply line 53 from the liquid distributor 33 and via the first supply line 51 of the liquid distributor 34 that provides the first liquid 27.

[0079] The first liquid 27 and the second liquid 28 can be emulsions or mixtures with the same composition. However, the compositions of the first liquid 27 and the second liquid 28 can also be different. For example, the first liquid 27 for oiling can be an emulsion with water and oil, while the second liquid 27 (should be 28) for yarn end fixing has water, adhesive, bonding agent, and / or emulsion, where the emulsion consists of a composition of water and oil different from that of the first liquid 27.

[0080] Depending on the yarn 12 to be produced, the corresponding plastic melts extruded by the spinnerets 41.1 to 41.3 are also different. The spinnerets 41.1 to 41.3 then have different capillary sizes for the corresponding yarn types. These yarn types can be, for example, IDY, POY, FDY, HOY, and / or BCF.

[0081] Each yarn type also has a different yarn count. This means that different liquids must be supplied for the finishing of the yarn at the preparation nozzles 42.1 to 42.3 and at the yarn end fixing application device 15, because different amounts and qualities of liquid must be applied according to the yarn type and yarn count to ensure the required quality for oiling at the spinning device 200 and for fixing the loose yarn 31 at the winding device 100 (should be winding device 100).

[0082] The supply of the first liquid 27 to the individual preparation nozzles 42.1 to 42.3 is preferably carried out continuously.

[0083] For this purpose, a suitable displacement or pumping device can be provided which ensures a continuous supply of the first liquid 27.

[0084] The second liquid 28 is preferably supplied discontinuously by respective pumping devices which are controlled or regulated by the control system of the winding device 100 so that the second liquid 28 can be supplied to the yarn end fixing application device 15 at the right time and in sufficient quantity.

[0085] Figure 3 A block diagram is schematically shown which shows the basic method steps for producing the winding bobbin 13.

[0086] In a first method step S10, the plastic melt is extruded through spinnerets 41.1 to 41.3 into a plurality of filaments 120.

[0087] In a further method step S11, the filaments 120 are combined at a preparation nozzle 42.1 to 42.3 into respective yarns 12.1 to 12.3, while being cooled simultaneously by a cooling device 45.

[0088] The cooling device 45 is preferably a cylindrical housing which at least partially surrounds the area of the extruded filaments 120 so that cooling air can be directed to the filaments 120.

[0089] In a further step S12, a first liquid 27 is applied for oiling the yarn finish. This yarn finish is applied by the preparation nozzles 42.1 to 42.3 and preferably has the first liquid 27 supplied from a liquid dispenser 34 through a first supply line 51.

[0090] The supply of the preparation nozzles 42.1 to 42.3 can also be carried out specifically or in combination by a liquid dispenser 33 containing the second liquid 28.

[0091] In a further step S13, drafting is carried out by godet rollers 20.1 to 20.3 and the respective yarns 12.1 to 12.3 are wound at corresponding winding points 4.1 to 4.3 on the winding device 100.

[0092] In a further step S14, after the yarn is wound onto the winding bobbin 13, the yarn is cut by a replaceable cutting device 14, resulting in a loose yarn end 31 on the winding bobbin 13. In a subsequent step S15, the loose yarn end 31 is then fixed with the second liquid 28 and / or the first liquid 27 by the yarn end fixing application device 15.

[0093] After the loose yarn end 31 is fixed on the winding bobbin 13 and the winding spindles 3.1 or 3.2 are decelerated accordingly, the fully wound winding bobbin 13 can be removed in step 16.

[0094] List of Reference Numerals

[0095] 1 Frame

[0096] 2 Winding Turret

[0097] 3.1, 3.2 Clamping Chuck

[0098] 4.1 - 4.3 Winding Points

[0099] 5 Pressure Roller

[0100] 6 Roller Support

[0101] 7 Sleeve

[0102] 8 Traversing Device

[0103] 11 Head Thread Guide

[0104] 12.1, 12.2, 12.3 Yarn

[0105] 13 Winding Bobbin

[0106] 14 Replaceable Cutting Device

[0107] 15 Yarn End Fixing and Applying Device

[0108] 16 Moving Actuator

[0109] 18 Support

[0110] 19 Liquid Applicator

[0111] 20.1 - 20.2 Thread Guide Rollers

[0112] 27 First Liquid; Preparation Liquid

[0113] 28 Second Liquid; Yarn Fixing Liquid

[0114] 29 Final Winding Section

[0115] 31 Yarn End

[0116] 33 Liquid Dispenser

[0117] 34 Liquid Dispenser

[0118] 40 Spinning Beam

[0119] 41.1 - 41.3 Spinnerets

[0120] 42.1 - 42.3 Preparation Nozzles

[0121] 43.1 - 43.3 Thread Guides

[0122] 44.1 - 44.3 Spinning Pump

[0123] 45 Cooling Device

[0124] 50 First Supply Pipeline

[0125] 51 Second Supply Pipeline

[0126] 53 Third Supply Pipeline

[0127] 120 Filament

[0128] 100 Winding Device

[0129] 200 Spinning Equipment

[0130] WS Junction

Claims

1. A method for producing a wound bobbin (13) using a synthetic yarn (12), wherein, A plurality of filaments (120) are extruded from a plastic melt, the filaments are combined to form a synthetic yarn (12), and the filaments are wetted with a first liquid (27) during the combination, wherein the synthetic yarn is drawn by godet rollers (20.1 - 20.2) and wound onto the winding bobbin (13) by a winding device (100), characterized in that, in order to remove the winding bobbin (13) from the winding device (100), the loose yarn end (31) of the winding bobbin (13) is fixed to the winding bobbin (13) with a second liquid (28).

2. The method according to claim 1, wherein Before removing the winding bobbin, the yarn (12) is cut, and after the cutting, the second liquid (28) is applied to the joint point (WS) of the winding bobbin (13).

3. The method according to at least one of the preceding claims 1 or 2, characterized in that The first liquid (27) used when combining the plurality of filaments (120) into the yarn (12) is different from the second liquid (28) used for fixing the loose yarn end (31).

4. The method according to at least one of the preceding claims 2 or 3, characterized in that, The first liquid (27) used when combining the plurality of filaments (120) into the yarn (12) is the same as the second liquid (28) used for fixing the loose yarn end (31).

5. The method according to at least one of the preceding claims, characterized in that, The first liquid (27) used when combining the plurality of filaments (120) into the yarn (12) is continuously supplied, wherein the second liquid (28) for fixing the loose yarn end is supplied discontinuously.

6. The method according to at least one of the preceding claims, characterized in that, The first liquid (27) and / or the second liquid (28) serves as a lubricant, an anti - sticking agent, and / or an antistatic inhibitor.

7. The method according to at least one of the preceding claims, characterized in that, The first liquid (27) has an emulsion containing water and oil.

8. The method according to at least one of the preceding claims, characterized in that, The second liquid (28) has water, an adhesive, a bonding agent, or an emulsion containing water and oil.

9. The method according to at least one of the preceding claims, characterized in that, Depending on the yarn (12) to be produced, especially IDY, POY, FDY, HOY, BCF, the composition of the first liquid and / or the second liquid is different.

10. An apparatus for producing wound bobbins from synthetic yarns, the apparatus being especially configured for performing the method according to at least one of the preceding claims 1 or 9, the apparatus having a spinning device (200) for extruding a plurality of filaments (120) from a plastic melt, which filaments are combined into a yarn by means of a preparation nozzle (42.1 - 42.3), wherein, The plurality of filaments (120) are wetted with a first liquid (27) by the preparation nozzles (42.1 - 42.3), and the device is provided with a winding device (100) for winding the yarn (12) from the spinning device onto a winding bobbin (13), wherein the winding device (100) has a winding mandrel (3.1, 3.2), a traversing device (8) for forming the winding bobbin (13), and a yarn end fixing application device (15), characterized in that the preparation nozzles (42.1 - 42.3) are supplied with the first liquid (27), and the yarn end fixing application device (15) is supplied with the second liquid (28).

11. The device according to claim 10, characterized in that, The first liquid (27) is continuously supplied to the preparation nozzles (42.1 - 42.3) through a first supply line (50), and the second liquid (28) is discontinuously supplied to the yarn end fixing application device (15) through a second supply line (51).

12. The device according to at least one of the preceding claims 10 or 11, characterized in that, The first liquid (27) and the second liquid (28) are arranged in a common liquid dispenser (33) of the preparation nozzle (42.1-42.3) and / or the yarn end fixing application device (15), or in different liquid dispensers (33, 34).

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