JP2008522048A - Device for guiding and interlacing multifilament yarns during melt spinning - Google Patents

Abstract

  The present invention relates to a method and apparatus for guiding and interlacing multifilament yarns during multifilament melt spinning. In this case, the yarn is entangled in a yarn section stretched between two godets. In order to maintain a predetermined yarn tension for entanglement, the yarn segment before entanglement and the yarn segment after entanglement are each guided in a smooth circumferential region of the guide mantle. The smooth circumferential region has a surface with an average roughness value <0.2 μm. In this case, the entanglement device is arranged corresponding to the smooth circumferential region of the guide mantle.

Description

  The invention relates to a method for guiding and entanglement of multifilament yarns during melt spinning as described in the superordinate concept of claim 1 and to an apparatus for carrying out the method as described in the superordinate concept of claim 9.

  A method of this type and a device of this type are known from EP 0 940 485 A2.

  In the case of producing a synthetic yarn by melt spinning, a polymer melt is extruded into a strand-shaped filament by a spinning nozzle having a number of nozzles. After the very thin filament cools, it is collected into a synthetic yarn. Depending on the desired yarn type, yarn processing is performed, for example, by drafting, relaxing or crimping. At the end of melt spinning, the synthetic yarn is wound on a bobbin. It is known to entangle multifilament yarns in order to ensure that the individual filaments are held together in the yarn during the treatment and in subsequent processing. During entanglement, as is known in the name of tangling, a compressed air stream is directed to the yarn, causing entanglement of individual filaments, and thus yarn bonding is achieved with the yarn. The number and uniformity of the confounding nodes given per thread section is a measure of the quality of the thread connection.

  In the known method and the known apparatus, the yarn connection required for subsequent processing is performed by the interlacing of a yarn section stretched between two godets. This allows the yarn to be led directly to the take-up device after leaving the last godet. In an advantageous manner by the godet guide of the yarn arranged between the entanglement device and the winding device, the yarn tension for the entanglement is not affected by the winding tension generated on the yarn by the winding device. In this case, when the godet is wound multiple times, the entanglement device is used for the last thread wrapping to prevent the draft tension from affecting the tangle tension and to allow easy operation of the method. It is advantageous to be left. However, in particular when making so-called full draft yarns (FDY) in which the yarn is drafted between two godet pairs with a high draft tension, the individual yarn tension for entanglement is independent of the draft tension and wound up. It can hardly be realized regardless of the tension.

  The object of the present invention is therefore to improve the method of entanglement and guidance of multifilament yarns of the type mentioned at the outset and to improve the apparatus for carrying out the method so that a predefined yarn tension is obtained as much as possible. Is to do so.

  Another object of the present invention is to provide a method and apparatus for guiding and entanglement of multifilament yarns so that as many entanglement nodes as possible are reproducibly produced in the yarns.

  The object has been solved by a method having the features of claim 1 and an apparatus having the features of claim 9.

  Advantageous configurations of the invention are defined by the features and combinations of features of the dependent claims.

  The solution to the above problem is that, in the device for drafting a synthetic yarn as disclosed in DE 19909073 A1, a number of surface zones located one after the other where the draw godet and the draft godet have different surface roughnesses. It is different from having In this case, the drawer godet has a relatively smooth surface zone, especially in the region of the last wrap and the draft godet in the region of the first wrap, so as to form the highest draft tension possible. It is intended. However, this condition is completely unsuitable for allowing the multifilament yarns to be entangled simultaneously.

  The present invention has the advantage that the yarn tension for entanglement is kept independent of the draft tension and independent of the winding tension, especially when producing a fully drafted yarn. The yarn tension adjusted during the spun yarn section stretched during the godet is maintained. This is because the yarn guided in the smooth circumferential region of the guide mantle can hardly perform relative movement with respect to the surface of the guide mantle. In addition, the yarn segment that leads to a uniform entanglement result with a reproducible number of entanglement nodes based on the fixed length of the yarn segment by guiding the yarn segment before and after entanglement by a smooth circumferential region The tightening length is determined. In this case, sufficient adhesion between the yarn and the smooth circumferential region of the guide mantle is ensured with the surface having an average roughness value <0.2 μm. In this case, generally, the smaller the average roughness value obtained by polishing or other processing of the peripheral surface, the greater the adhesion of the yarn to the guide mantle.

  In this case, the godet for guiding the yarn can be constituted by a godet having a guide mantle having the same diameter or a godet having a guide mantle having a different diameter. Accordingly, the godet for guiding the yarn by a plurality of windings is advantageously constituted by a godet having a guiding jacket having a large diameter and a godet having a guiding jacket having a small diameter. In this case, a godet with a small guide mantle is also called an overrunning roller or a co-running roller in the specialized area. Therefore, in order to guide and entangle the multifilament yarn, it does not matter whether the godets have the same guide jacket or different diameter guide jackets.

  According to the configuration of the invention according to claims 2 and 10, it is particularly advantageous to change the yarn tension for entanglement. This gives the possibility of adjusting the yarn tension during the entanglement and provides a suitable operating point for adjusting the entanglement nodes as large as possible.

  The yarn tension is advantageously adjusted by changing the peripheral speed of the guide mantle arranged in front of the entanglement device. Based on the high adhesion between the smooth circumferential area of the guide mantle and the yarn, the altered circumferential speed directly increases or decreases the yarn tension in the yarn section between both godets. In order to reduce the yarn tension during entanglement, the peripheral speed of the guide mantle is slightly increased. In order to obtain a higher yarn tension, the peripheral speed of the godet can be reduced accordingly.

  In order to avoid as much as possible the return action from the trailing yarn guide to the winding device, it is advantageous for the yarn to be guided in a smooth circumferential region of the guide mantle in order to run out of the godet. For this purpose, each smooth circumferential region is formed at the free end of the guide mantle.

  In the case where the yarn is guided by a plurality of windings in the godet, the guide mantle is constituted by a plurality of circumferential regions arranged side by side in a zone according to an advantageous configuration of the present invention. In this case, a non-smooth circumferential region having a large average roughness value above 0.2 μm is formed beside the smooth circumferential region. As a result, it is possible to realize a compensation process in the case of guiding the yarn without affecting the yarn tension in the case of entanglement.

  In this case, the influence of the pre-treatment in the process is avoided by the fact that the yarn is fed to the godet and is likewise guided in the smooth circumferential region of the guide mantle.

  In order to change the yarn tension for entanglement more greatly, the yarn is preferably guided in a circumferential area with a small diameter of the guide mantle for running out of the godet at the last winding. As a result, the peripheral speed of the guide mantle placed behind is reduced, and as a result, the yarn tension is reduced. This configuration of the present invention is particularly suitable for winding yarns with as low a yarn winding tension as possible despite the presence of pre-entanglement. As a special measure to increase the number of entangled nodes per unit length, the modified embodiment of the invention in which the yarn is heated to a temperature between 80 ° C. and 250 ° C. before entanglement is advantageous. In principle, the yarn can be heated by any type of yarn heating.

  In the case of producing a synthetic yarn, usually a plurality of yarns, for example, 8, 10, 12 or 16 yarns, are produced simultaneously at one spinning site. In order to avoid processing differences as much as possible, the yarns are preferably guided side by side and processed simultaneously. In order to keep the overhanging length of the godet on the one hand as short as possible and on the other hand to avoid as much as possible the influence of adjacently guided yarns, according to a further configuration of the invention, the stretched adjacent yarn sections are from 3 mm Guided at intervals of up to 8 mm. For this purpose, the entanglement device has a number of yarn passages each having an interval of 3 to 8 mm.

  In each yarn passage, at least one yarn guide arranged on the entry side is arranged correspondingly. This defines important support points for the entanglement of the yarn in front of and in some cases behind the entanglement device.

  The method and apparatus according to the invention are in principle particularly suitable for the entanglement of a single yarn or a plurality of side-by-side yarns in parallel in a melt spinning process. The method according to the invention can be integrated into all known spinning processes, for example for producing POY, FDY, BCF or technical yarns.

  Hereinafter, the present invention will be described in detail based on embodiments of the accompanying drawings.

  FIG. 1 schematically shows a melt spinning apparatus in which the apparatus according to the invention for carrying out the method according to the invention is integrated.

  FIG. 2 is a diagram schematically showing an embodiment of the apparatus of the present invention shown in FIG.

  FIG. 3 shows another embodiment of the device according to the invention.

  FIG. 4 shows a further embodiment of the device according to the invention.

  FIG. 1 shows a complete spinning device with a device according to the invention, which is schematically integrated. The spinning device includes a spinning mechanism 1 for producing a synthetic yarn, a processing device 2 disposed on the downstream side of the spinning mechanism 1, and a winding device 3 provided for winding the yarn. .

  In the spinning mechanism 1, a large number of filaments 9 are extruded from a thermoplastic material by a spinning nozzle 7. For this purpose, the thermoplastic material is melted by the extruder 4 and fed to the spinning bar 6 via the spinning pump 5. The spinning bar 6 is configured to be heatable, and has a large number of spinning nozzles 7 held on the lower surface thereof in an array. FIG. 1 shows one of the spinning nozzles 7. A thin filament 9 is extruded by the spinning nozzle 7. The filament 9 is guided through a cooling device 8 arranged below the spinning bar 6. In the cooling device 8, the filaments are preferably cooled by an air stream. The filaments 9 are combined into a single thread 11 just below the cooling device 8. For this purpose, the filament 9 is loaded with the preparation agent by the preparation device 10.

  The processing device 2 is provided for drafting the yarn 11. For this purpose, the processing device 2 has two godet pairs 12.1 and 12.2 arranged one above the other. The first godet pair 12.1 is formed of a drawer godet 13 and a parallel godet 14. The second godet pair 12.2 is formed by a draft godet 15 and a parallel godet 16. The godet pair 12.1 is wound with the yarn 11 a plurality of times, and the godet Dios 12.1 pulls the yarn 11 out of the spinning mechanism 1. Since the rear godet pair 12.2 is driven at a higher peripheral speed than the godet pair 12.1, the yarn 11 is drafted between the draw godet 13 and the draft godet 15.

  An entanglement device 22 is arranged between the draft godet 15 and the parallel godet 16 in order to interlace the yarn section 29 of the yarn 11 stretched between the draft godet 15 and the parallel godet 16. The configuration and operation of the device formed by the draft godet 15, the parallel running godet 16, and the entanglement device 22 will be described in detail below.

  The yarn 11 is drawn from the processing device 2 by the winding device 3 and enters the winding zone via the head yarn guide 17. The yarn 11 from the head yarn guide 17 reaches the traverse triangle and the traverse device 20 disposed at the end of the traverse triangle. The yarn 11 reaches the pressure roller 21 from the traverse device 20, and the yarn 11 is pressed against the surface of the bobbin 18 by the pressure roller 21. The bobbin 18 is fastened to the bobbin spindle 19 and driven by a spindle motor.

  The spinning device shown in FIG. 1 is merely illustrative of the process steps that are performed to produce melt spun synthetic yarn. In this case, the individual device parts and the process device can be configured differently depending on the type of yarn. In particular, the processing device 2 can be individually equipped with a process device according to the yarn type. However, what is important in this case is that the confounding device 22 arranged on the upstream side of the winding device 3 is arranged between two godets arranged corresponding to the processing device. In order to increase the yarn bonding of the yarn 11 for processing in the processing device 2, another entanglement device may be arranged between the spinning mechanism 1 and the processing device 2.

  FIG. 2 schematically shows the godet pair 12.2 with the confounding device 22 arranged together. This embodiment of the device according to the invention is shown in plan view in FIG.

  The draft godet 15 has a guide mantle 23 coupled to a godet driving device 24. The guide mantle 23 is divided into two circumferential regions 25.1 and 25.2. In this case, the circumferential region 25.1 is constituted by a smooth surface at the free end of the guide mantle 23. The smooth circumferential region 25.1 has a surface roughness value with an average roughness value <0.2 μm. The second circumferential region 25.2 extending to the bearing end of the guide mantle 23 is configured with a greater roughness and the surface has an upper average roughness value of 0.2 μm.

  A parallel godet 16 is disposed at a distance from the draft godet 15, and the parallel godet 16 has a guide mantle 26 having a small diameter. The guide mantle 26 is connected to a godet driving device 27. The guide mantle 26 is formed with two zone-shaped circumferential regions 28.1 and 28.2. The circumferential region 28.1 at the free end of the guide mantle 26 is likewise configured as a smooth surface region, and the surface roughness has an average value below 0.2 μm. The circumferential region 28.2 extending to the bearing end at the guide mantle 26 is configured as a non-smooth surface region and has an average roughness value of the upper region of 0.2 μm.

  Each godet driving device 24 and 27 has a corresponding control device 33.1 and 33.2, respectively. These control devices 33.1 and 33.2 are connected to a control unit 34, and each godet driving device is controlled by this control unit 34.

  The entanglement device 22 is arranged between the guide mantles 23 and 26 in the areas of smooth peripheral surface areas 25.1 and 28.1. The entanglement device 22 has a plurality of yarn passages 30, and the yarn sections stretched between the guide mantle 26 and the guide mantle 23 can be guided by these yarn passages 30. The yarn passage 30 is connected to a compressed air supply device, and the yarn section 29 is entangled in the yarn passage 30 by this compressed air supply device.

  In accordance with both godets 15 and 16, a total of three yarns are simultaneously arranged in parallel with each other and wound around and guided. The last wrap in the godets 15, 16 is formed by a thread section 29 guided between the circumferential regions 25.1 and 28.1. In doing so, the yarn segments 29 are guided by the respective yarn passages 30 of the entanglement device 22 and are loaded with compressed air. In order to guide the yarn, the guide mantles 23 and 26 are first driven at equal circumferential speeds by godet drive devices 24 and 27. The last winding of the godets 15 and 16 is formed by a thread section 29 guided between the circumferential regions 25.1 and 28.1. In this case, the yarn section 29 is guided through the corresponding yarn passage 30 of the entanglement device 22 and is loaded with compressed air flow. In order to guide the yarn, the guide mantles 23 and 26 are driven at equal circumferential speeds by godet drive devices 24 and 27. In order to finely adjust the thread tension at the last winding of the godets 15 and 16, the godet driving device 27 is changed via the control unit 34 and the control device 33.2 to finely adjust the peripheral speed of the guide mantle 26. Be made. Since the yarn winding in the front guide mantle 26 is guided with a large roughness in the circumferential region 28.2, a slight difference in the peripheral speed of the guide mantle 23 with respect to the peripheral speed of the guide mantle 23 is a slip phenomenon. Can be compensated. On the other hand, in the final winding between the circumferential region 28.1 of the guide mantle 26 and the yarn section 29, a high adhesion force is generated between the yarn and the yarn guide mantle 26. Fine adjustment of the circumferential speed of 26 directly results in a change in yarn tension of the yarn entanglement. Due to the tightening of the yarn section 29 between the smooth circumferential region 25.1 of the guide mantle 23 and the smooth circumferential region 28.1 of the guide mantle 26, a slip phenomenon between the yarn and the godet surface is not possible. . In so far as the thread tension defined for the interlacing in the thread section 29 is adjusted. There is no impact on the pre-process and post-process.

  In order to minimize the overhanging length of the godet or to guide as many yarns as possible over the short godet at the same time, in this embodiment the distance between two adjacent yarns is as large as 5 mm. It has been adjusted. On the one hand, in order to eliminate the mutual influence of the yarns when the distance is too small, and on the other hand to avoid the godet that is long overhanging and thus susceptible to vibration, the distance between two adjacent yarns is from 3 mm. It can be composed of an area of 8 mm.

In the embodiment, the circumferential region 25.1 in the guide mantle 23 is produced by a polished surface. The average roughness value _Ra was in the region of 0.1 ± 0.25 μm. On the other hand, the cylindrical region 25.2 of the guide mantle 23 is configured to be dull with a surface roughness of R _a = 0.65 ± 2 μm. The circumferential region 28.1 of the guide mantle 26 is composed of a correspondingly smooth surface and an average roughness value of R _a = 0.1 ± 0.025 μm, and the cylindrical region 28.2 has R _a = 0.65 ±. It is composed of a roughness value of 0.25 μm.

  FIG. 3 schematically shows another embodiment of the apparatus of the present invention for carrying out the method of the present invention. The embodiment according to FIG. 3 is substantially the same as the embodiment of FIG. 2, so that the spinning mechanism shown in FIG. 1 can be used. Only the differences will be described in detail below in relation to the previous description. In this case, the same reference numerals are given to components having the same function.

  Both godets 15 and 16 are spaced apart from each other in order to guide a plurality of yarns extending in parallel. In this case, the yarn is guided in the guide jackets 23 and 26 of the godets 15 and 16 by a plurality of windings. The number of three yarns arranged in parallel is one example. In practice, 16 or more yarns are guided on the circumference of the godet. The guide mantle 23 and the guide mantle 26 have the same outer diameter. In this case, the guide mantle 23 has a total of three different circumferential regions, which are arranged side by side in a zone shape and the guide mantle 26 has two circumferential regions 28.1 and 28.2, respectively. And have. The configurations of the circumferential regions 28.1 and 28.2 in the guide mantle 26 are the same as those in the embodiment of FIG. 2 described above. The guide mantle 23 has one smooth circumferential region 25.1 and 25.3 at the bearing end and the free end, respectively. Since the smooth circumferential region 25.1 is formed in the diameter step 31, the final winding of the yarn by the yarn section 29 comes into contact with the circumferential region having a small outer diameter. Depending on the diameter step 31, it is achieved that the entanglement of the yarn in the preceding entanglement device 22 is carried out at a low yarn tension level. This allows further growth of the confounding nodes per unit length in the yarn. The thread section 29 is fixed between the smooth circumferential areas 25.1 and 28.1 of the guide mantles 23,26. In order to guide the yarns, one running yarn guide 32 is placed in front of the entanglement device 22 per yarn passage 30. As a result, the short support length is adjusted for confounding regardless of the distance between the guide mantles 23 and 26. In order to adjust the yarn tension at the last winding of the yarn, the godet drive 17 is preferably controlled via the control device 33.2. In order to achieve the compensation state with the front thread winding, the circumferential region 28.2 of the guide mantle 26 and the central circumferential region 25.2 of the guide mantle 23 have a suitable degree of roughness. Constructed with a dull surface. A heating device 36 is provided inside the guide mantle 26, and the guide mantle 26 can be heated by the heating device 36. In this case, the guide mantle 26 is heated so that the yarn section 29 for entanglement has a temperature that can be in the region from 80 ° C. to 250 ° C. In particular, it has been found that the number of nodes per unit length in the yarn grows by confounding the heated yarn.

  In principle, the yarn can also be heated by other additional heating means, not shown, constructed between the godets.

  For example, to allow the yarn to be pre-drafted in a defined draft condition, the godet 15 is similarly circular for yarn introduction and has a maximum average roughness value of 0.2 μm. It has a peripheral region 25.3.

  Therefore, the embodiment shown in FIG. 3 is particularly suitable for being placed in a draft field as a running galette.

  FIG. 4 shows a schematic perspective view of another embodiment of an apparatus for carrying out the method according to the invention. The device has two godets 15, 16 spaced apart from each other. Each of these godets 15 and 16 has guide mantles 23 and 26 which are driven at a predetermined peripheral speed by a driving device (not shown). In the guide mantles 23 and 26, three yarns extending in parallel with each other are guided by partial winding. For this purpose, the guide mantles 23, 26 have a smooth circumferential area indicating the surface roughness of the area where Ra ≦ 0.2 μm. The yarn 11 is thereby guided by the guide jackets 23 and 26 with relatively good adhesion.

  Between the godets 15 and 16 is an entanglement device 22 having a plurality of yarn passages 30 assigned to the yarn section 29. In each yarn passage 30, a run-in yarn guide 32 is assigned to the run-in side, and a run-out yarn guide 35 is assigned to the run-out side. This provides individual support for the entanglement of the yarn sections tensioned between the godets 15 and 16. The position of both the running-in yarn guide 32 and the running-out yarn guide 35 can be changed, for example, to improve the strength of the entanglement node.

  The method according to the invention as well as the device according to the invention are suitable for allowing strong entanglement to be carried out when the synthetic yarn is produced in a melting process. The special advantage in this case is that the yarn tension for the entanglement is adjusted individually, and the reaction from the subsequent process or the influence from the pre-process is almost avoided.

1 schematically shows a melt spinning apparatus integrated with an embodiment of the apparatus according to the invention for carrying out the method of the invention. FIG. FIG. 2 is a schematic plan view of one embodiment of the present invention shown in FIG. 1. Fig. 3 is a schematic view of another embodiment of the device according to the invention. Figure 3 is a schematic diagram of yet another embodiment of the apparatus of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Spinning mechanism 2 Processing device 3 Winding device 4 Extruder 5 Spinning pump 6 Spinning bar 7 Spinning nozzle 8 Cooling device 9 Filament 10 Preparation device 11 Yarn 12.1, 12.2 Godet vs. 13 Pulling godet 14 Parallel godet 15 Draft Godet 16 Parallel godet 17 Bed yarn guide 20 Traverse device 21 Pressure roller 22 Entangling device 23 Guide mantle 24 Godet drive device 25.1, 25.2, 25.3 Circumferential region 26 Guide mantle 27 Godet drive device 28.1 , 28.2 Circumferential region 29 Yarn section 30 Yarn passage 31 Diameter step 32 Yarn guide bar 33.1, 33.2 Control device 34 Control unit 35 Running yarn guide 36 Heating device

Claims (18)

  A method for guiding and interlacing multifilament yarns during melt spinning, wherein the yarns are guided by a guide sheath of two godets, partially or multiple times, and the yarns are stretched between the godets In the method of entanglement in sections, the yarn sections are guided in a smooth circumferential region in the guide mantle having a surface with an average roughness value smaller than 0.2 μm before and after entanglement. A method of guiding and interlacing multifilament yarns during melt spinning.   The method of claim 1, wherein the godets are driven independently of each other and the peripheral speed of the guide mantle is controlled independently of each other.   3. A method according to claim 2, wherein the peripheral speed of the guide mantle that is pre-entangled with the yarn path is varied to adjust the yarn tension in the yarn section.   4. A method as claimed in claim 1, wherein the yarn is guided in a smooth circumferential region of the guide mantle to draw the yarn from the godet.   In order to guide the yarn to the godet when the yarn is wound a plurality of times, it is guided in one smooth circumferential region of the guide mantle and guided in the non-smooth circumferential region of the guide mantle. In this case, the smooth circumferential region and the non-smooth circumferential region are arranged in a zone shape in the guide mantle, and the method according to any one of claims 1 to 4.   6. A method according to claim 5, wherein the yarn is guided over a reduced diameter circumferential region of the guide mantle to draw the yarn from the godet at the last wrap.   7. A method as claimed in claim 1, wherein the yarn is heated before entanglement so that the yarn section stretched between the guide mantles has a temperature in the region of 80 to 250 [deg.] C. during entanglement.   A plurality of yarns are simultaneously arranged in parallel with each other and guided to the godet, wherein the yarn sections stretched for entanglement between the guide mantles are guided at intervals of a region of 3 mm to 8 mm. The method according to any one of the above.   Two godets (15, 16) spaced apart from each other, having a guide jacket (23, 26) rotatably supported, for guiding and entanglement when melt spinning multifilament yarns ) And an entanglement device (22) disposed between the godets (15, 16), and a guide mantle (23) in which at least one godet (15) is driven. In the type in which the book thread (1) is guided by the guide mantle (23, 26) by partial winding or multiple times of winding, the guide mantle (23, 26) is smaller than 0.2 μm, respectively. Characterized in that it has at least one smooth circumferential region (25.1, 28.1) with a surface of average roughness and is arranged corresponding to the entanglement device (22) at the yarn path. Multifilament yarn Device for guiding and and entangled when melt spinning.   Each godet (15, 16) has one controllable godet drive device (24, 27), and the guide jacket (23, 26) can be driven at a predetermined peripheral speed by the godet drive device (24, 27). 10. The apparatus of claim 9, wherein   Device according to claim 9 or 10, wherein the smooth circumferential region (25.1, 28.1) is constructed at the free end of the guide mantle (23, 26).   The guide mantle (23, 26) has a non-smooth circumferential area (25.2, 28.2) with a surface having an average roughness value greater than 0.2 μm, said circumferential area (25. 2, 28.2) is configured in the guide mantle (23, 26) in the form of a transverse zone of a smooth circumferential region (25.1, 28.1). The device described.   A godet (15) placed in advance for running the yarn is provided in the guide mantle (23) in a second smooth circumferential region (25.25) constructed at the supported end of the guide mantle (23). 13. The apparatus of claim 12, comprising 3).   A godet (15) placed behind for running the yarn has a diameter step (31) in the guide mantle (23), and the diameter step (31) is formed at the free end of the guide mantle (23). 14. The device according to claim 12 or 13, wherein:   15. Any one of claims 9 to 14, wherein at least one of the godets (15, 16) has a heating device (36) by which the guide jacket (23, 26) can be heated. The device described.   The device according to any one of claims 9 to 15, wherein the guide mantle (23, 26) of the godet (15, 16) is configured to have a length capable of guiding a plurality of yarns side by side simultaneously.   17. The device according to claim 16, wherein the entanglement device (22) has a plurality of yarn passages (30) for guiding a plurality of yarns, each forming an interval of a region of 3 mm to 8 mm.   18. The device as claimed in claim 17, wherein one thread guide (32) is arranged corresponding to each thread passage (30) at least on the entry side.

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