EP1844186A1 - Method and device for producing a crimped composite thread - Google Patents

Abstract

The invention relates to a method and a device for producing a crimped composite thread, wherein the inventive method consists in extruding, cooling and in drawing several yarns in the form of a plurality of strand filaments and in jointly crimping them in order to obtain a crimped composite thread. The aim of said invention is to make it possible to pre-treat the threads in a manner adaptable to each treatment step. The aim is attained by that at least one multi-treaded yarn is whirl-tangled many times during several operations prior to crimping. For this purpose, a whirl-tangling device provided with a plurality of whirl-tangling units following each other in a direction of the yarn displacement is used.

Description

 Method and device for producing a crimped composite thread

The invention relates to a method for producing a crimped composite thread according to the preamble of claim 1 and to an apparatus for carrying out the method according to the preamble of claim 12.

In producing a crimped composite yarn in a one-step manufacturing process, a plurality of synthetic monofilaments are first extruded as a plurality of strand-like filaments, cooled and drawn. The individual threads have different properties, preferably different colors, so that the color of the composite thread is determined by mixing the individual threads. Depending on the application for the composite thread, this results in different requirements in the color image of the composite thread. There is a desire to produce a mixing of the individual threads, which leads neither to a dominant emergence of the individual threads, nor to a complete mixing of the individual threads in the composite thread. In particular, the dominant emergence of a color component in the composite thread can - if this is too long - lead to so-called "flames" as elongated portions of the same color are named. However, such flames are desirable in most cases.

•. EP 0 485 871 A1 discloses a method and a device for producing a multicolored composite thread which has proven particularly useful in the production of so-called tricolor threads for carpet application. Here, the multifilament monofilaments are guided by a common crimping to form a composite thread. For this purpose, the monofilaments are guided together with the aid of a delivery nozzle in a stuffer box. Within the stuffer box, the filaments of the monofilaments lay to loops and bows and form a common thread plug. Here, on the one hand, a crimping of the filaments and, on the other hand, a mixing of the filaments of the individual filaments is achieved. testifies. To set a certain color separation in the composite thread each of the monofilament is vortexed separately before the common crimping, so that the entanglement of the filaments within the monofilament form a Teilfaden- circuit. Thus, the mixing of the individual threads in the composite thread could be improved with regard to a color separation. In practice, there is a desire for color design in the composite thread such that both composite threads in a mixed color with strong mixing of the individual threads or with strong thread separation without intensive mixing of the monofilament can be produced.

From EP 0 874 072 A1 a method and a device are known in which the monofilaments are vortexed separately and crimped separately prior to merging into the composite thread. However, this method basically has the disadvantage that excessive separation occurs in the composite thread, but these are undesirable for avoiding flames in a carpet. In addition, there is the disadvantage that each individual thread must be crimped separately, so that a very large amount of equipment is required. In particular, the handling is particularly problematic in a multi-thread system.

From DE 42 02 896 Al a further method and a device is known in which the monofilaments imprinted before feeding into the crimping a false twist. However, there is a risk that the monofilaments will emphasize too much in the composite thread and, moreover, this hinders the curling effect in the monofilaments.

It is an object of the invention to develop a method and a device of the generic type such that the composite thread with the highest possible flexibility in the color design of a mixed color to a color separation can be produced. Another object of the invention is to provide a reproducible adjustability for the color image of the composite thread.

This object is achieved by a method with the features of claim 1 and by a device having the features of claim 12.

Advantageous developments of the invention are defined by the features and feature combinations of the respective subclaims.

The invention is based on the finding that the swirling of multifilament threads can be used with very different effects. Thus, the swirling of a multifilament yarn can be used to create a blending or knotting of the filaments of the yarn. Thus, the intensity of the thread conclusion, which is essentially also directed to the respective treatment step on the thread, determined. This is where the invention begins, which provides for multiple turbulences of at least one of the multifilament yarns. In this way, the treatment steps carried out, in particular, until the individual threads have been crimped, can be carried out with individually adjusted turbulences to form a thread end. For this purpose, at least one of the multifilament monofilaments is vortexed several times before crimping in several preliminary stages. A further advantage of the invention is given by the fact that the common texturing of the monofilaments can be maintained to the composite thread. The multiple turbulence of the individual threads alone allows a flexible design of the color in the composite thread. Thus, to set a high color separation, each of the individual threads can be swirled in several preliminary stages. In order to obtain mixing phenomena in the composite thread, preferably only one of the multifilament monofilaments is swirled into a plurality of precursors.

The method variant, in which each of the multifilament monofilaments is vortexed separately in a first precursor before being drawn, is characterized from that the individual threads in the drawing device with high smoothness and small distance from each other by the drawing device are navigable. In this case, the swirling of the monofilament introduced in the first preliminary stage can be exclusively geared to obtaining a thread interleaving optimal for the stretching of the monofilaments.

In order to obtain special color mixtures or color separations in the composite thread, the method variant is preferably used, in which at least one of the monofilament or all monofilaments in a second precursor are separately entangled after stretching. In this case, the thread closure produced by the turbulence on the individual threads can be turned off solely on the subsequent common crimping of the individual threads.

The adjustability and the bandwidth of the coloring of the composite thread can also be improved by swirling the individual threads in at least one of the preliminary stages, each with different compressed air control values of a compressed air supply. Thus, different Verwirbelungsgrade can be adjusted at the parallel guided individual threads. If, for example, a composite thread is desired which, in addition to a dominant single color, should have a second component as a mixed color, the color-determining individual thread can be swirled with relatively high compressed-air control values. Here, the height of the compressed air control values is proportional to the braiding node produced in the thread.

However, it is also possible to carry out the turbulence of the individual threads in the preliminary stages, each with different compressed air control values of the compressed air supply lines. Thus, a lesser thread closure is needed to stretch the threads, so as not to hinder the individual distortion of the filaments. In contrast, a parked on the color position swirling is desired for the common crimping of the individual threads. Likewise, for example, in the second preliminary stage, a pulsation of the pressure to turbulence can be carried out in order to vary the color mixture. This makes it possible to produce special yarn effects for the production of fancy yarns.

To intensify the Verwirbelungsbehandlung before crimping the monofilaments, the process variant has proven particularly useful in which the multifilament monofilaments are swirled by a heated compressed air. Alternatively, however, it is also possible to heat the monofilament before swirling. In this case, it was possible to determine influences on the generated entanglement of the filaments in the monofilaments as well as effects on crimping of the composite thread.

In order to adjust the decisive for the Krausem the monofilaments thread tensions independently of the thread tensions of the upstream turbulence, the process variant is particularly advantageous in which the monofilaments before curling with multiple wrapping led to a godet unit and in a piece of thread of the wraps before the expiry of the Galetteneinheit be swirled.

When using heated godets can thereby advantageously simultaneously perform a tempered turbulence on the monofilament.

In order to obtain the thread closure required for the final further processing of the composite thread, the composite thread is tufted after the crimping of the individual threads and before winding into a coil, wherein the coloring of the composite thread produced by the turbulence in the precursors and by the crimping of the individual threads essentially preserved.

The inventive method is particularly suitable for the production of a composite thread, which is formed from a plurality of preferably different partial thread. However, the invention is not restricted to partial filaments. Different nature, since in particular an individual pretreatment of the monofilaments can also be used advantageously in composite thread, which are formed of identical partial threads. In particular, structural features of the monofilaments are in the foreground, which can be generated by the different Vorverwirbelung carried out in two stages.

The inventive method is also suitable, after a separate turbulence in a first stage to swirl all the individual threads together in the second precursor. Due to the multi-stage turbulence before texturing, the invention offers a very high degree of flexibility in the pretreatment of the monofilaments before texturing. Thus, it is also possible that the monofilaments in the first precursor are mixed together and in the second precursor are vortexed separately.

Furthermore, the inventive method is not limited to that the individual threads are crimped together. In principle, there is also the possibility that each of the individual threads is textured separately before merging the individual threads. A further variant of the method can also be carried out in such a way that, after a common or separate texturing and merging of the individual threads into the composite thread, the composite thread is separated again into partial threads after cooling, which are subsequently swirled together before being wound up into the final composite thread. Such a variant of the method can be used with differently dyed individual threads in order to obtain additional color settings.

To carry out the method according to the invention, the device according to the invention has a turbulence device formed from a plurality of turbulence units, the turbulence units being arranged one behind the other in the yarn path of the individual filaments. In order to be able to carry out treatment steps on the monofilament between the individual swirling stages, a first swirling unit of the stretching unit is advantageously arranged upstream, wherein the first swirling unit has a swirling nozzle for each of the individual threads.

A second turbulence unit with a plurality of fluidizing nozzles is advantageously arranged between the drawing device and the curling device.

In order to be able to carry out the swirling of the monofilaments in the individual precursors with different compressed air control values, the swirling nozzles are each assigned a controllable Drackluftzuführung. In this case, the compressed air supply both simultaneously supply a plurality of swirling nozzles or can be used for the separate supply of a swirling nozzle.

In order to obtain the special effects previously caused by thermal turbulence, the device according to the invention can be expanded in such a way that at least one of the turbulence units is assigned a heating means by which compressed air can be heated.

Alternatively, however, the turbulence unit could be preceded by a heating device, by means of which the individual filaments can be heated.

In order to carry out an independent thread tension adjustment during curling and during swirling of the monofilaments, the device according to the invention is preferably used, in which the stretching device has a godet unit upstream of the curling device, on which the monofilaments are guided with multiple wrapping, and in which the swirling nozzles of the second turbulence unit of the godet unit are assigned such that the individual threads are vortexed before expiry of the godet unit. In the arrangement of the Verwirbelungsdüsen the second turbulence in a belt between two godets can be set in the arrangement of the Verwirbelungsdüsen in the last wrap a lowering of the thread tension in the turbulence that the individual threads at expiration of the godet unit to a step jump of the godet with reduced Diameter to be guided. In principle, however, with the arrangement of the swirl nozzle, each looping branch between the pair of godets is suitable in order to be able to carry out swirling in the second preliminary stage.

In order to obtain additional thermal effects in the swirling of the filaments, the godet unit according to an advantageous development of the device can be formed at least by two driven godets, in which at least one of the godets is designed to be heatable.

For the final production of a thread closure in the composite thread a Tangeleinrichtung is arranged between the crimping device and a winding device provided for winding the composite thread.

In order to produce an intensive and uniform crimping of the monofilaments, the device variant in which the crimping device has a stuffer box and a delivery nozzle assigned to the delivery nozzle has proved particularly useful. The individual threads are conveyed together by means of the delivery nozzle in the stuffer box and popped up to a yarn plug.

The method according to the invention is explained in more detail below with reference to some embodiments of the device according to the invention with reference to the attached figures.

They show: Fig. 1 shows schematically a first embodiment of the device according to the invention for carrying out the method according to the invention

Fig. 2 shows schematically a further exemplary embodiment of the invention

FIG. 3 schematically shows an embodiment of the exemplary embodiment from FIG. 1. FIG

4 shows schematically a variant of the embodiment of FIG. 2

FIG. 5 schematically shows a variant of the embodiment of FIGS. 1 and 2

Fig. 6 shows schematically an embodiment of a Separierfadenführers

In Fig. 1, a first embodiment of a device according to the invention for carrying out the method according to the invention is shown schematically. The device has a spinning device 1, which is connected to one or more melt generators (not shown here). The spinning device has a heated spinning beam 2, which carries a plurality of spinnerets 3.1 to 3.3 next to each other. The spinnerets 3.1 to 3.3 each have on their undersides a plurality of nozzle bores through which the spinnerets 3.1 to 3.3 each supplied polymer melt streams are extruded under pressure to a plurality of individual filaments. Below the spinning device 1, a cooling device 4 is provided, through which the extruded filaments are guided, so that the emerging at approximately melt temperature individual filaments are cooled. For this purpose, the cooling device 4 could be formed, for example, by an injection, through which a cooling air is blown substantially transversely onto the filaments. After the filaments have cooled, the filament strands 13.1, 13.2 and 13.3 associated with each of the spinnerets 3.1, 3.2 and 3.3 are brought together in each case at a single filament 6.1, 6.2 and 6.3 at the outlet of the cooling device 4. For this purpose, at the output of the cooling device 4, a preparation device 7 and the yarn guide 5.1, 5.2 and 5.3 associated with the monofilament 6.1, 6.2 and 6.3 are provided.

In order to subtract the monofilaments 6.1, 6.2 and 6.3 from the spinnerets 3.1, 3.2 and 3.3, a stretching device 10 is provided, which contains at least one peeling-off electrode unit 18 (shown in dashed lines). In this case, the individual threads 6.1, 6.2 and 6.3 are guided in parallel run through the stretching device 10. The individual threads can be pulled off together by a take-off godet unit or, alternatively, by individual deliveries, which are assigned to the individual threads.

After stripping and stretching the individual threads 6.1, 6.2 and 6.3 by the stretching device 10, the individual threads 6.1, 6.2 and 6.3 are combined in a crimping device 11 and joined together to form a composite thread 21.

The crimping device 11 is formed in this embodiment by a delivery nozzle 15 and a stuffer box 16 cooperating with the delivery nozzle 15. The delivery nozzle 15 is connected to a pressure source (not shown) through which a delivery medium of the delivery nozzle 15 is supplied. Due to the pumped medium, the monofilaments 6.1, 6.2 and 6.3 are drawn into the delivery nozzle 15 and then popped up in the stuffer box 16 to form a thread stopper. In this case, partial mixing of the individual threads 6.1 to 6.3 occurs. The yarn plug 22, preferably produced by a hot conveying medium, is subsequently guided to a cooling drum 17 and cooled.

For the pretreatment of the monofilament threads 6.1 to 6.3, a first swirling unit 8.1 and a second swirling unit 8.2 between the stretching device 10 and the cooling device 11 are arranged between the preparation device 7 and the stretching device 10. The first turbulator 8.1 has several Vortex nozzles 9.1, 9.2 and 9.3, which are each assigned to the individual threads 6.1, 6.2 and 6.3. Each of the swirl nozzles 9.1, 9.2 and 9.3 contains a thread channel through which the monofilament is guided. A pressure channel opens laterally in the thread channel in order to introduce a fluid, preferably a pressure ring, into the thread channel at high energy. The pressure channels are connected via a compressed air supply 12.1 and a pressure actuating means 14.1 with a pressure source. To set a compressed air control value, the pressure actuating means 14.1 is coupled to a control device 24.

The construction of the swirl nozzles 9.1, 9.2 or 9.3 is basically known and described for example in DE 10 2004 007073 A1.

The second turbulence unit 8.2 upstream of the crimping device 11 likewise has a plurality of turbulence nozzles, which are identified by the reference numerals 9.4 to 9.6. The structure of the Verwirblungsdüsen 9.4 to 9.6 of the second Verwirbelungseinheit 8.2 is substantially identical to the structure of the Verwirbelungsdüsen 9.1 to 9.3 of the first Verwirbelungseinheit 8.1. The swirl nozzles 9.4 to 9.6 are connected via the DnicMuftzuführung 12.2 and the Drackstellmittel 14.2 with a pressure source, not shown here. The pressure adjusting means 14.2 is coupled with the control device 24 for setting and changing a compressed air control value. The swirling units 8.1 and 8.2 can thus be operated independently of each other for swirling the individual threads 6.1 to 6.3.

For post-treatment of the crimped composite thread 21 formed by the monofilaments 6.1 to 6.3, the crimping device 11 is followed by a tangeling device 19. Within the Tangeleinrichtung 19 of the composite yarn 21 receives a last required for further processing thread closing treatment.

After Tangein the composite thread 21 is taken up by the winding device 20 and wound into a coil 23. In this case, the take-up device 20 simultaneously serves as a take-off member to remove the crimped composite yarn 21 from the yarn plug 22. In order to be able to set the thread tensions for winding and tying in the composite thread 21, the composite thread 21 can also be pulled off the thread stopper 22 by a withdrawal godet and lead to the takeup device 20 through a further godet unit arranged downstream of the Tangeleinrichtung 19. However, the configuration of the devices in the aftertreatment zone does not affect the method according to the invention, so that any desired processing units and treatment stages can be executed on the composite thread 21 until it has been wound up into a coil 23.

In the embodiment of the device according to the invention shown in FIG. 1, three parallel filament bundles 13.1, 13.2 and 13.3 are spun by the spinnerets 3.1, 3.2 and 3.3, each with a plurality of filament strands. The filament bundles 13.1, 13.2 and 13.3 in this case have different properties, preferably a different coloring of the base polymer. However, it is also possible for the filament bundles to contain different base polymers or different additive additions in each case.

Each of the filament bundles 13.1, 13.2 and 13.3 is merged into a single thread 6.1, 6.2 and 6.3. For this purpose, the filament bundles 13.1, 13.2 and 13.3 are each supplied with a preparation medium by the preparation device 7 and connected by the thread guides 5.1, 5.2 and 5.3 to the respective monofilaments.

For the further treatment of the monofilaments 6.1 to 6.3, a first turbulence is carried out by the vertebration unit 8.1 in a first preliminary stage immediately after preparation. For this purpose, each of the individual threads 6.1 to 6.3 is guided through a swirl nozzle 9.1 to 9.3. The turbulence unit 8.1 in this case has a pressure control value of the supplied compressed air, which leads to an interlinkage. tion of the filaments forming the monofilament leads. On the one hand, a homogenization of the preparation application is achieved, and on the other hand, a minimum thread closure required for the subsequent godet guidance in the stretching device 10 is produced. When adjusting the pressure setting value, it must be ensured that there is no excessive knotting of the filaments of the monofilament.

After the monofilaments 6.1 to 6.3 are pulled out and stretched, a second swirling of the monofilaments 6.1 to 6.3 in the second preliminary stage by the swirling 8.2. In the turbulence unit 8.2, the individual fences 6.1 to 6.3 are each guided and swirled separately through the swirling nozzles 9.4 to 9.6. In this case, the entanglement of the filaments introduced in the individual threads 6.1 to 6.3 is selected such that a certain mixing occurs during the crimping of the individual threads 6.1 to 6.3 to form the composite thread 2.1. In particular, in the production of a multi-color crimped composite thread so that the color of the composite yarn 21 can be influenced within wide limits. Thus, for example, a composite thread 21 with strong color separation can be produced in that, during the swirling in the second swirling unit 8.2, a relatively high pressure control value of the supplied compressed air is inserted. This produces an intensive interweaving of the filaments of the monofilament, which can be loosely dissolved even during the subsequent crimping treatment. Conversely, by setting a low pressure set value in the swirling unit 8.2, it is possible for the composite thread 21 to have a more or less strong mixed color.

After vortexing in the second preliminary stage, the individual threads 6.1 to 6.3 are co-crimped together and combined to form the composite thread 21. For this purpose, the monofilaments 6.1 to 6.3 are required by the delivery nozzle 15 with a delivery fluid into an adjacent stuffer box 16. Within the stuffer box 16, the filaments of the individual threads 6.1 to 6.3 wrap themselves in loops and sheets to form a thread stopper 22, which is dissolved after thermal treatment to form the crimped composite thread 21. For producing a final thread Finally, the composite thread 21 is dangled prior to winding to a coil 23 in the Tangeleinrichtung 19.

With the method according to the invention and the device according to the invention, it is possible in particular to produce multicolored, crimped composite threads which have a high degree of uniformity in their coloring. Here, depending on the desire and requirement for the visual properties special settings of the pretreatment can be made.

FIG. 2 shows a further exemplary embodiment of a device according to the invention for carrying out the method according to the invention. The embodiment is essentially identical to the preceding exemplary embodiment, so that reference is made to the preceding description and only the differences will be explained at this point. The components with identical functions have been given identical reference numerals.

In the embodiment according to FIG. 2, the drafting device 10 can be formed, for example, by two godet units 18 and 27. In this case, each godet unit is formed by two driven godets or a driven godet with overflow roller, wherein the monofilaments 6.1, 6.2 and 6.3 are guided in parallel over the godets. The godet unit 18 and 27 are driven at a differential speed, so that a stretching of the threads 6.1 to 6.3 occurs.

In order to prepare the individual threads 6.1 to 6.3 for the crimping in a second preliminary stage, a second swirling unit 8.2 is arranged between the stretching device 10 and the crimping device 11. The swirling unit 8.2 has a plurality of swirling nozzles 9.4 to 9.6. In each case a vortex nozzle is assigned to one of the individual threads. The swirl nozzles 9.4 to 9.6 are independently controllable. For this purpose, each swirl nozzle 9.4 to 9.6 is a DnicMuftzuführung 12.3, 12.4 and 12.5 with one each Pressure adjusting 14.3, 14.4 and 14.5 assigned. The pressure actuating means 14.3 to 14.5 are coupled to the control device 24 in order to be able to set a pressure control value at each of the swirling nozzles 9.4 to 9.6. It should be expressly mentioned that the Druckstelhnittel 14.3 to 14.5 are such that a complete shut-off of the compressed air supply is adjustable. Thus, a high flexibility in the pretreatment of the individual threads 6.1 to 6.3 can be selected immediately before crimping.

The exemplary embodiment shown in FIG. 2 for carrying out the method according to the invention thus has an even higher flexibility in order to obtain certain effects in a composite thread by bringing together the differently swirled individual threads 6.1 to 6.3. For example, it is possible to produce a multicolored composite thread in which the appearance is characterized by a strongly separated single color and by a second mixed color. Such effects can be achieved, for example, by swirling one of the threads in the second precursor in the case of three differently dyed individual threads 6.1 to 6.3 and the other threads receiving no additional turbulence in the second precursor.

The exemplary embodiments of the device according to the invention shown in FIGS. 1 and 3 can be varied by additional means or combinations in order to achieve particular effects, in particular during the pretreatment for the crimping of the monofilaments. Thus, for example, a modification of the exemplary embodiment of FIG. 1 is shown in FIG. In this case, only the stretching device 10, the Verwirbelungseinheit 8.2 and the crimping device 11 is shown schematically in Fig. 3. Since both the devices not shown and the devices shown are substantially identical to the embodiment of FIG. 1, reference is made to the above description and explained at this point only the differences. The Verwirbelungseinheit 8.2 has to each of the individual threads 6.1, 6.2 and 6.3 each have a swirl nozzle 9.4, 9.5 and 9.6. The swirl nozzles 9.4 to 9.6 are connected via the compressed air supply 12.2 and the pressure actuating means 14.2 with a pressure source. In addition, the compressed air supply 12.2 has a heating means 26, by means of which the fluid supplied to the swirling nozzles 9.4 to 9.6 is previously heated. The heating means 26 and the pressure actuating means 14.2 are connected to a control device 24.

In the exemplary embodiment shown in FIG. 3, the swirling of the individual threads 6.1 to 6.3 in the second preliminary stage takes place by means of a heated fluid. As a result, heating of the filaments of the monofilament is achieved which, on the one hand, influences the interweaving of the individual filaments and, on the other hand, leads to a more intensive ruffling. The Vorverflechtung the filaments in the monofilament is essentially retained during subsequent treatments.

4, a further embodiment of the device according to the invention according to the exemplary embodiment of FIG. 2 is shown in a cutaway view. In this case, the structure of the process items not shown here is essentially identical to the aforementioned embodiment, so that no further explanations are given here. In the detail shown in FIG. 4, the drafting device 10, the swirling unit 8.2 and the crimping device 11 are shown in a view. The stretching device 10 is formed by a first withdrawal godet unit 18 and a second draw godet unit 27. Each of the godet units 18 and 27 has two godets which are looped around several times by the individual threads 6.1 to 6.3. The godets 28.1 and 28.2 of the draw godet unit 27 are designed to be heated so that the monofilaments 6.1 to 6.3 guided on the circumference of the heated godets 28.1 and 28.2 are heated. Between the heated godets 28.1 and 28.2, the turbulator 8.2 is arranged. The swirling unit 8.2 is in this case identical to the embodiment shown in FIG. 2, so that each of the individual threads 6.1 to 6.3 is associated with a swirling nozzle. The turbulence 8.2 is here arranged in a Umschlingungsast between the godets 28.1 and 28.2. Thus, the turbulence unit 8.2 can be arranged, for example, in the last loop of the single thread 6.1 to 6.3.

After expiration of the monofilament 6.1 to 6.3 of the heated godet 28.1 these are performed together in the crimping device 11 and upset to a yarn plug 22.

In the variant of the device according to the invention according to FIG. 4, the swirling on a heated monofilament can be carried out on the one hand and on the other hand the thread tension for texturing of the monofilament in the crimping device 11 can be set to swirl the monofilament in the second precursor independently of the thread tension become. Thus, for example, a diameter step can also be introduced on the heated godet 28.1 in order to achieve specific stress ratios for the turbulence. The diameter steps 33 of the godet 28.1 in the last loop of the monofilament is shown by dashed lines in FIG. 4 and is arranged downstream of the swirling unit 8.2. A further advantage of the variant illustrated in FIG. 4 is that the individual threads receive a defined drainage point from the godets 28.1. The individual threads run with high smoothness of the last godets in the crimping.

The arrangement shown in Fig. 4 can also be advantageously carried out by non-heated godets, so that a turbulence takes place at ambient temperature.

5, a further embodiment of a method and device variant is shown, as it would be used, for example, alternatively in the exemplary embodiment of FIGS. 1 and 2.

5, between the cooling drum 17 and the take-up device 20, a first take-off godet 29.1, a separating godet Thread guide 30, a Tangeleinrichtung 19 and a second Abzugsgalette 29.2 arranged. The cooling drum 17 upstream components may be formed as in the embodiment of FIG. 1 or 2, so that reference is made to the above description.

In the embodiment variant shown in Fig. 5, the composite thread 21 is withdrawn after crimping and cooling on the circumference of the cooling drum 17 through the first Abzugsgalette 29.1. The withdrawal godet 29.1 is shown here as a driven godet with associated auxiliary role. For subsequent treatment, the composite thread 21 is separated into the individual threads 6.1, 6.2 and 6.3. For this purpose, the individual threads 6.1, 6.2 and 6.3 are guided by a Separierfadenführer 30 before entering the Tangeleinrichtung 19. Within the tangling device 19, the separately incoming individual threads 6.1, 6.2 and 6.3 are again vortexed and combined to form the composite thread 21. The composite yarn 21 is withdrawn by the Abzugsgalette 29.2 and the take-up device 20 fed. In the winding device 20, the composite thread 21 is wound to the coil 23. By separating the composite thread before the aftertreatment special visual effects can be created again. There is the possibility that prior to the aftertreatment at least one of the single filaments after the separation receives an additional treatment in the form of turbulence.

In the embodiment variant shown in FIG. 5, the composite thread 21 is separated into the individual threads 6.1, 6.2 and 6.3. In this case, preferably a separating yarn guide 30 is used, which is preferably designed according to the embodiment illustrated in FIG. 6. The Separierfadenführer 30 has a disc-shaped carrier 32 which is attached to one side of a machine frame. At the periphery of the carrier 32 a plurality of guide eyelets 31.1, 31.2 and 31.3 are arranged at intervals. In the embodiment shown in Fig. 6, the thread guide eyelets 31.1, 31.2 and 31.3 form the vertices of an equilateral triangle. The guide eyelets 31.1, 31.2 and 31.3 preferably have a ceramic insert. This allows the individual threads 6.1, 6.2 and 6.3 separately stir in the Tangeleinrichtung 19 in the exemplary embodiment shown in Fig. 5.

The exemplary embodiments described for carrying out the method according to the invention are exemplary in their arrangement and in their choice of treatment devices. Thus, further pretreatment or post-treatment steps and means may be introduced to, for example, be able to perform additional treatments on the monofilaments before texturing or on the composite strands after texturing or other treatments on the composite strands. Likewise, the nature and design of the crimping device is exemplary. To set certain crimps, the individual threads can also be textured in each case with different parameters. In the case of separate crimping, it is also possible to use different crimping methods in order to subsequently combine the crimped individual threads to form a composite thread. The number of individual threads shown in the embodiments is also exemplary. Thus, a composite thread of at least two individual threads or several individual threads can be produced.

LIST OF REFERENCE NUMBERS

1 spinning device

2 spinning beams

3.1, 3.2, 3. .3 spinnerets

4 cooling device

5.1, 5.2, 5. .3 thread guides

6.1, 6.2, 6. 3 Monofilament

7 preparation device

8.1, 8.2 first turbulence unit

9.1, 9.2, 9. 3 Swirl nozzle

10 stretching device

11 crimping device

12.1, 12.2 Compressed air supply

13.1, 13.2, 13.3 filament bundles

14.1, 14.2 Pressure control means

15 delivery nozzle

16 stuffer box

17 cooling drum

18 take-off godet unit

19 Tangeleinrichtung

20 take-up device

21 composite thread

22 thread plugs

23 coil

24 control device

26 heating means

27 draw godet unit

28.1,, 28.2 heated galette

29.L, 29.2 Deduction godet

30 guide loops 1.1, 31 ■ 2, 31.3 Guide eyelet 2 Carrier

Diameter step

Claims

claims A method of making a crimped composite yarn in which a plurality of monofilaments are each extruded, cooled, drawn and coextensive with each other as a plurality of rope-shaped filaments Composite thread are crimped, wherein the multifύen monofilaments are vortexed separately before crimping, characterized in that at least one of the multifilen monofilament is vortexed several times before crimping in several stages. 2. The method according to claim 1, characterized in that each of the multifilament monofilament is vortexed separately in a first precursor prior to drawing. 3. The method according to claim 1 or 2, characterized in that at least one of the monofilaments or all monofilaments are vortexed separately in a second precursor after stretching. 4. The method according to any one of claims 1 to 3, characterized in that the monofilaments are swirled in at least one of the precursors, each with different Druckluftstellwerten a compressed air supply. 5. The method according to any one of claims 1 to 4, characterized in that the turbulence of the monofilaments is carried out in the precursors, each with different Druckluftstellwerten the Druckluftzufuhrungen. 6. The method according to claim 5, characterized in that the compressed air actuating value of the compressed air feeds for swirling the monofilament before stretching is lower than the compressed air control value of the compressed air supply lines for swirling the monofilament after stretching. 7. The method according to any one of claims 1 to 6, characterized in that the multifilen monofilaments before curling in at least one of Precursors are swirled by a heated compressed air. 8. The method according to any one of claims 1 to 6, characterized in that the multifilen monofilaments are heated before crimping in at least one of the precursors immediately before swirling. 9. The method according to any one of claims 1 to 8, characterized in that the monofilaments are guided before crimping with multiple wrapping on a godet unit and vortexed in a thread piece of Umschlin- conditions before the expiry of the godet unit. 10. The method according to claim 9, characterized in that the individual threads are guided by at least one heated galette of the godet unit. 11. The method according to any one of claims 1 to 10, characterized in that the composite thread is teased after Krausem the monofilaments and before winding into a coil. 12. Device for carrying out the method according to one of claims 1 to 11 with a spinning device (1), a cooling device (4) and a drawing device (10) for producing a plurality of multifilar individual filaments (6.1, 6.2, 6.3), with a crimping device (11 ) for merging the monofilaments (6.1, 6.2, 6.3) into a composite thread (21) and with a vortex device (8.1, 8.2) arranged upstream of the crimping device (11) for separate swirling of the monofilaments (6.1, 6.2, 6.3), characterized in that the Verwirbelungseinrich- tion several in the yarn path of the monofilaments (6.1, 6.2, 6.3) successively arranged turbulence units (8.1, 8.2) for multiple vortexing of at least one of the individual filaments (6.1, 6.2 , 6.3). 13. The apparatus according to claim 12, characterized in that a first Verwirblungseinheiten (8.1) of the drawing device (10) is arranged upstream, wherein the first Verwirblungseinheit (8.1) to each of the individual filaments (6.1, 6.2, 6.3) each have a Verwirblungsdüse (9.1, 9.2 , 9.3). 14. The apparatus of claim 12 or 13, characterized in that a second Verwirblungseinheit (8.2) of the drawing device (10) is arranged downstream and that the second Verwirblungseinheit (8.2) a plurality of Verwirblungsdüsen (9.4, 9.5, 9.6). 15. The apparatus of claim 13 or 14, characterized in that the Verwirblungsdüsen (9.1, 9.2, 9.3) of the first Verwirblungseinheit (8.2) is associated with a controllable compressed air supply (12.1). 16. Device according to one of claims 13 to 15, characterized in that the Verwirblungsdüsen (9.4, 9.5, 9.6) of the second Verwirblungseinheit (8.2) a plurality of separately controllable compressed air supply (12.1, 12.4, 12.5) are assigned. 17. Device according to one of claims 12 to 16, characterized in that at least one of the Verwirblungseinheiten (8.1, 8.2) is associated with a heating means (26) through which a compressed air can be heated. 18. Device according to one of claims 12 to 16, characterized in that at least one of the Verwirblungseinheiten (8.1, 8.2) a Heating device (28.1, 28.2) is arranged upstream, by which the monofilaments (6.1, 6.2, 6.3) are heated. 19. Device according to one of claims 12 to 18, characterized marked, that the drafting device (10) has a crimping device (11) upstream godet unit (27) on which the individual threads (6.1, 6.2, 6.3) out with multiple wrapping are, and that the Verwirblungsdüsen (9.4, 9.5, 9.6) of the second Verwirblungseinheit (8.2) of the godet unit (27) are assigned such that the individual filaments (6.1, 6.2, 6.3) before expiration of the godet unit (27) are swirled. 20. Device according to claim 19, characterized in that the godet unit (27) is formed by two driven godets (28.1, 28.2), wherein at least one of the godets (28.1, 28.2) has a diameter step 33 downstream of the swirling nozzle (8.2) , 21. The apparatus according to claim 19, characterized in that the godet unit (27) by two driven godets (28.1, 28.2) is formed, wherein at least one of the godets (28.1, 28.2) is formed heatable. 22. Device according to one of claims 12 to 21, characterized in that the crimping device (11) is arranged downstream of a winding device (20) for winding up the composite thread (21) and that between see the crimping device (11) and the winding device (20) a Tangeleinrichtung (19) is arranged to Tangein of the composite thread (21). 23. Device according to one of claims 12 to 22, characterized marked, that the crimping device (11) by a delivery nozzle (15) and one of the delivery nozzle (15) associated with stuffer box (16), wherein the monofilaments (6.1, 6.2, 6.3) by means of the delivery nozzle (15) together in the Stauchkarnrner (16) are required.