EP2406417B1 - Method and apparatus for the production of a turf yarn - Google Patents

Description

The invention relates to a method for producing a grass yarn for artificial turf and a device for carrying out the method.

In the production of artificial grass so-called grass yarns are used, which have a composite of several monofilaments or multiple tapes. The grass yarn is processed in a tufting process to an artificial grass carpet. Within the artificial turf, the artificial grasses are formed by the monofilaments or the ribbon. The aim is that the artificial fibers emulate properties of the natural grasses as possible. Thus it is known to influence the cross sections, coloring as well as the structure of the monofilaments or ribbons according to the natural grasses. In order to improve the properties of artificial turf, in particular in the elasticity and the Wiederaufrichtvermögen of the individual fibers, it has been found that this can be made possible in particular by grass yarns, which are made by a combination of several monofilaments of different polymer materials.

So is out of the EP 0 996 781 B1 a grass yarn formed of monofilaments or tapes of different polymer materials produced in two parallel extrusion processes. In the known method, however, only the different properties of the polymer materials are used to obtain certain improvements on the artificial turf. This affects in particular the visual properties and wear resistance.

From the EP 1 961 865 A In addition, an artificial turf grass yarn is known which has a composite of crimped monofilaments and smooth Having monofilaments. Also the US Pat. No. 3,940,522 describes a similar composite.

Further, the JP 2000 178824 A the production of a grass yarn from only crimped monofilaments and the US 2 145 346 A a weaving yarn, in which smooth monofilaments and crimped monofilaments are connected with a binding thread.

In contrast, the invention has for its object to provide a method for producing a grass yarn for synthetic turf of the generic type and an apparatus for performing the method, with which a grass yarn is provided, which causes a high turf elasticity in an artificial turf.

This object is achieved by a method having the features of claim 1 and by a device having the features of claim 9.

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 properties of the grass yarn within the synthetic turf can be influenced in particular by structural differences in the fiber composite. Thus, the monofilaments or ribbons of one of the extrusion processes are crimped before being combined, whereby the crimped monofilaments or ribbons and the smooth monofilaments or ribbons are produced parallel to one another and combined together in a wrapping station with a composite thread. This allows the monofilaments or ribbons produced on two separate extrusion lines to be produced parallel to one another and finally combined to form the grass yarn. Each grass yarn thus contains crimped monofilaments or ribbons and smooth monofilaments or ribbons in different polymer materials. By the winding of the monofilaments, on the one hand, sufficient cohesion is ensured for a subsequent tufting process and, on the other hand, the dissolution of the composite within the synthetic-grass carpet is facilitated.

Thus, after tufting in the tension-free state, it was found that the crimped monofilaments retreat due to their crimping, thus forming a ground pile in the artificial turf. This leads to a high permanent elasticity of the artificial turf. The smooth monofilaments, however, form the grass fiber and stand out in their softness. In addition, the re-erection behavior of the smooth monofilaments is supported by the crimped monofilaments in the bottom pile. This results in longer useful lives of such artificial turf.

The method according to the invention and the devices according to the invention are particularly advantageous for producing such a grass yarn in a single process sequence.

In order to continuously merge the crimped monofilaments and the smooth monofilaments regardless of the crimping process, the process variant in which the crimped monofilaments or ribbons are produced in the extrusion process prior to crimping at a higher production speed than the smooth monofilaments or ribbons is preferred. The crimped monofilaments or ribbons are crimped by a stuffer box texturing, so that the speed difference between the extrusion processes can be used to obtain an intensive crimping of the crimped monofilaments.

In this case, the speed difference of the production speeds of the two extrusion processes depending on the stuffer box texturing can be selected such that after the stuffer box texturing the crimped monofilaments or tapes and the smooth monofilaments or tapes can be taken off at the same production speed and fed to a wrapping station.

In the case where the grass yarn is formed in conjunction with crimped ribbons, the method variant in which the crimped ribbons are fibrillated before crimping in an additional treatment step is particularly advantageous. The fibrillation creates a net-like structure on the ribbon, which in the further processing leads to special effects leads. It has been shown that in a tufting process for the manufacture of a lawn carpet, such net-like structures dissolve and the blades of grass appear as monofilaments.

The grass yarn produced by combining the crimped and smooth monofilaments or ribbons is wound up into a bobbin after being wound up. The grass yarn can thus be fed directly to a subsequent tufting process. At this point, it is expressly pointed out that the grass yarn is formed not only by merging monofilaments or by merging ribbons, but can also be advantageous by merging monofilaments and ribbons. For example, extrusion processes of monofilaments and ribbons can be combined to make grass yarn without any problems.

The yarn properties required of a grass yarn, such as wear resistance, flexibility, and erectability, are further enhanced by providing the crimped monofilaments or tapes of the polymeric material polyamide and the smooth monofilaments or tapes of the polymeric material polyethylene, particularly a linear low density polyethylene (LLDPE) are generated. Of course, other material combinations are possible in which the crimped monofilaments or ribbons are not extruded from a polyamide but from another polymer.

The smooth monofilaments or ribbons, which form the actual grass fiber in the artificial turf, can advantageously be produced by the process variant in which the smooth monofilaments or ribbons are produced by coextrusion from two polymer materials based on polyethylene in different colors. Thus, for example, the visual appearance of two different colored pages on the monofilament or ribbon can be such that, for example a grass fiber with a dark green side and a light green side arises.

In addition to monofilaments with two differently colored sides, a mixture of differently colored monofilaments can also be used. Here are some of the monofilaments or ribbons in the composite z. B. dark green and the remaining monofilaments or ribbons of the composite z. B. light green.

Furthermore, it is possible to produce the monofilaments from two different raw materials to produce a core-shell construction. In addition, a profile of the monofilaments improves the resistance to reversal in all of the above variants.

In order to produce the grass yarn in a large amount, the method variant is preferably used, in which the crimped monofilaments or ribbons are divided into a plurality of fiber bundles each having a certain number of crimped monofilaments or ribbons, wherein the smooth monofilaments or ribbons in a Are divided into a plurality of fiber bundles, each with a certain number of smooth monofilaments or tapes, and wherein in each case a fiber bundle with crimped monofilaments or ribbons and a fiber bundle with smooth monofilaments or ribbons are performed together for winding and winding. Thus, several grass yarns can be produced in parallel.

The division of the crimped monofilaments or ribbons into a multiplicity of fiber bundles can take place here before the crimping or after the crimping, depending on the crimping method. In principle, it is possible to crimp the plurality of fiber bundles in each case by means of crimping devices, which texture the fiber bundles independently of each other. However, there is also the possibility to curl the flock of monofilaments or ribbons together by means of a crimping device.

The device according to the invention for carrying out the method according to the invention has two juxtaposed extrusion systems for the production of monofilaments or ribbons, which immediately downstream of a composite device for merging a plurality of monofilaments or ribbons to a grass yarn. To crimp the monofilaments or tapes of one of the extrusion lines, one of the extrusion lines is followed by a crimping device. Thus, it is advantageous to produce a grass yarn from a composite of smooth and crimped monofilaments or ribbons in one process step. The composite of the individual monofilaments is ensured by a composite thread, so that the composite device has a Umwindungsstation.

To set the production speeds in the extrusion plants, a godet delivery plant is provided in each case, wherein the godet delivery systems of the two extrusion plants are independently drivable and controllable. Thus, production speed differences between the extrusion lines can be adjusted in order to subsequently perform different treatments on the monofilaments or ribbons.

In that regard, crimping of the monofilaments or ribbons is preferably done using stuffer box texturing in which the monofilaments or ribbons are conveyed into a stuffer box. Depending on the design of the crimping device, the monofilaments or tapes can here be guided jointly into a stuffer box via a nip of two crimping rollers or, alternatively, each as a single fiber bundle can be guided through a delivery nozzle into a stuffer box. As a conveying means then preferably a heated compressed air is used, which are conveyed by means of the delivery nozzles together with the monofilaments or ribbons in the stuffer box and dammed into a plug. In principle, however, other crimping are possible to to create a crimped structure on the monofilaments or ribbons. Thus, for example, an air texturing could be used in certain cases, in which the crimping is generated by a turbulence of the monofilaments or ribbons by means of compressed air.

For winding up the grass yarn, the composite device is arranged downstream of a take-up device.

In the event that a group of monofilaments or ribbons must be formed from a plurality of polymer materials, it is provided according to an advantageous development of the device according to the invention that one of the extrusion lines or both extrusion lines has one or two extruders for melting in front of polymer materials. Thus, both monofilaments and films can be produced by coextrusion.

To produce many grass yarns parallel to one another, the extrusion equipment is preferably assigned a composite device and a winding device with several wrapping stations and wind-up stations. This makes it possible to produce a large number of bobbins with grass yarn in parallel.

The method according to the invention and the device according to the invention will be described in more detail below with reference to some embodiments of the device according to the invention.

Fig. 1

schematisch eine Ansicht eines ersten Ausführungsbeispiels der erfindungsgemäßen Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens

Fig. 2

schematisch eine Draufsicht der Umwindungsstationen und Aufspulstationen des Ausführungsbeispiels aus Fig. 1

Fig. 3

schematisch eine Seitenansicht einer Umwindungs- und Aufspulstation des Ausführungsbeispiels aus Fig. 1

Fig. 4

schematisch eine Ansicht eines weiteren Ausführungsbeispiels der erfindungsgemäßen Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens

They show:

Fig. 1

schematically a view of a first embodiment of the device according to the invention for carrying out the method according to the invention

Fig. 2

schematically a plan view of the Umwindungsstationen and Aufspulstationen the embodiment of Fig. 1

Fig. 3

schematically a side view of a winding and Aufspulstation of the embodiment of Fig. 1

Fig. 4

schematically a view of another embodiment of the device according to the invention for carrying out the method according to the invention

In the Fig. 1 to 3 a first embodiment of the device according to the invention for carrying out the method according to the invention for producing a grass yarn is shown schematically. In Fig. 1 is the embodiment in an overall view, in Fig. 2 in a plan view of the Umwindungsstationen and Aufspulstationen and in Fig. 3 shown schematically in a partial view of the Umwindungsstationen and Aufspulstationen. The following description applies to all figures, insofar as no explicit reference is made to one of the figures.

In Fig. 1 the embodiment of the device according to the invention is shown in an overall view. The exemplary embodiment has two juxtaposed extrusion lines 1.1 and 1.2 in order to produce a plurality of monofilaments each from a thermoplastic polymer material. In this exemplary embodiment, the extrusion systems 1.1 and 1.2 are equipped, for example, with the same device parts, so that the structure of the extrusion systems 1.1 and 1.2 is explained below using the example of the extrusion system 1.1.

The extrusion plant 1.1 has an extruder 2.1 and an extrusion head 3.1 connected to the extruder 2.1. The extrusion head 3.1 is associated with a cooling bath 4.1. To deduct and stretch the extruded monofilaments several godets 7.1 and 9.1 are arranged with driven godets in a row. The monofilaments are guided on the circumference of the driven godets of the godet delivery 7.1 and 9.1 in parallel run side by side with simple wrap.

Between the cooling bath 4.1 and the first godet 7.1 a diversion is 5.1 provided with a plurality of pulleys, at the periphery of the monofilaments are performed with simple wrap. The deflection 5.1 is immediately downstream of the cooling bath 4.1 to strip off the adhering to the monofilaments cooling liquid of the cooling bath 4.1. The drying of monofilaments can usually be improved by additional suction, which are formed as suction slots on stationary deflection cylinder. Thus, the pulleys can also be replaced in the deflection 5.1 by deflection with integrated suction.

Between the Godet 7.1 and 9.1 a heater 8.1 is arranged. The heating device 8.1 could be formed for example by a convection oven, in which the monofilaments are heated to a stretching temperature. To stretch the monofilaments, the godets of godets 7.1 and 9.1 are driven with a speed difference.

This construction of in Fig. 1 extrusion systems 1.1 and 1.2 shown for the preparation of two monofilament shares 27.1 and 27.2 is exemplary. In principle, in both extrusion lines or only one of the extrusion lines, a heat-setting zone can be arranged downstream with another godet supply plant.

Regardless of the design of the extrusion systems, however, the extrusion systems 1.1 and 1.2 associated godet delivery 7.1, 7.2 and 9.1, 9.2 with their godets independently drivable and controllable. Thus, the monofilament share 27.1 can be produced in the extrusion line 1.1 with a comparison with the monofilament share 27.2 of the second extrusion line 1.2 with different production speeds. Essential here is the intended after-treatment on the monofilaments.

Like from the Fig. 1 and 2 shows, the extrusion line 1.2 downstream of the after-treatment of the monofilaments a crimping device 11. The crimping device 11 is formed in this example by a plurality of texturing stations 12, in each of which a fiber bundle of monofilaments is crimped. So is from the top view in Fig. 2 to recognize that the monofilament share 27.2 is divided on the outlet side of the extrusion line 1.2 by means of the guide bar 10.2 in a plurality of fiber bundles 29.2. Each of the fiber bundles contains a certain number of monofilaments, so that, for example, three, four, five or six monofilaments of the monofilament bundle 27.2 can be combined to form a fiber bundle 29.2. The fiber bundle 29.2 is crimped in one of the following texturing stations 12 and fed to a composite device 15.

The monofilament share 27.1 produced in the extrusion plant 1.1 is likewise divided into a plurality of fiber bundles 29.1. The fiber bundles 29.1 are fed directly to the composite device 15, so that in each case a fiber bundle 29.1 converge with smooth monofilaments and a fiber bundle 29.2 with crimped monofilaments.

The composite device 15 is formed by a plurality of Umwindestationen 16, in each of which two together guided fiber bundles 29.1 and 29.2 are wrapped with a composite thread. This creates the desired grass yarn. The grass yarn 21 thus contains smooth monofilaments and crimped monofilaments. For example, the grass yarn 21 can be formed from four individual smooth monofilaments and four individual crimped monofilaments. The smooth monofilaments and the crimped monofilaments are guided in the fiber bundles 29.1 and 29.2 and are brought together before winding to a total bundle.

The yarn path is in particular from the illustration in Fig. 3 refer to. Thus, the fiber bundle 29.2 is guided for curling by the godet unit 14.2 and 14.3. Between the godet units, the texturing station 12 is shown, exemplified by a texturing unit 24 and a drainage roller 25. The texturing unit 24 could be formed, for example, by a texturing nozzle and a downstream stuffer box.

The fiber bundle 29.1 with the smooth monofilaments is fed directly to the wrapping station 16 via a third godet unit 14.1. Before the wrapping station 16, the fiber bundles 29.1 and 29.2 are brought together and fed to the wrapping station 16 via a deflection roller 19. Within the Umwindestation 16, the fiber bundles 29.1 and 29.2 are wound with a composite thread 32. For this purpose, the Umwindestation 16 a driven hollow spindle 36, at the periphery of a composite coil 37 is held with the composite thread 32.

Like from the FIGS. 1 . Fig. 2 and Fig. 3 As can be seen, the winding device 17 is formed for winding up the grass yarns 21 by a plurality of Aufwickelstationen 18. In each of the wind-up stations 18, the grass yarn 21 is wound into a bobbin 22 held on a driven bobbin holder. For thread guidance, the winding station 18 has a dancer arm control 33, a traversing 34 and a pressure roller 35.

In the in the Fig. 1 to 3 illustrated embodiment, a grass yarn 21 is produced, which is processed in a further processing process to an artificial turf. The grass yarn formed from smooth monofilaments and crimped monofilaments may be formed by different polymeric materials and combinations of polymeric materials. Thus, for example, various thermoplastic materials such as PP, LLDPE, HDPE or PA can be processed in the extrusion processes of the extrusion plants 1.1 and 1.2. However, the combination in which smooth monofilaments are produced from a polyethylene in the extrusion process of the extrusion installation 1.1 is particularly advantageous. In the parallel extrusion process of the extrusion line 1.2, however, a granulate of polyamide or similar types of polymers is melted and extruded to produce the crimped monofilaments.

In order to obtain no speed differences between the fiber bundles 29.1 and 29.2, in particular when winding and winding up the grass yarn 21, the extrusion process of the extrusion plant 1.2 is operated at a higher production speed than the extrusion process of the extrusion plant 1.1. Thus, in particular the last godet delivery 9.1 and 9.2 of the extrusion systems 1.1 and 1.2 are operated at a differential speed. Thus, the godet delivery 9.2 is compared to the godet 9.1 with a higher peripheral speed of the godets driven, so that the monofilament share 27.2 the extrusion line 1.2 is performed at a higher production speed. The difference in the production speeds between the extrusion lines 1.1 and 1.2 is advantageously set such that after the crimping of the fiber bundles 29.2, the subsequent treatment steps on both fiber bundles 29.1 and 29.2 can be performed at the same guide speeds.

In Fig. 4 a further embodiment of the device according to the invention for carrying out the method according to the invention for producing a grass yarn is shown schematically. The exemplary embodiment is essentially identical to the exemplary embodiment according to FIG Fig. 1 , so that only the differences will be explained below and otherwise reference is made to the above description.

At the in Fig. 4 illustrated embodiment, in the extrusion lines 1.1 and 1.2 each extruded a flat sheet and cut into ribbons. Thus, the extrusion systems 1.1 and 1.2 each have extrusion heads 3.1 and 3.2, through which a flat film is extrudable.

In the extrusion system 1.1, two polymer materials are extruded into the flat film by coextrusion in the extrusion head 3.1. For this purpose, the extruder 2.1 and 2.3 are assigned to the extrusion head 3.1. For example, the extruders 2.1 and 2.3 could extrude a polymer material in different colors, for example, to extrude a two-color flat film. However, it is also possible to extrude two different polymer materials through the extruder 2.1 and 2.3.

In order to cut the extruded in the extrusion lines 1.1 and 1.2 flat sheets to each a ribbon of 28.1 and 28.2 to the first godet 7.1 and 7.2 each have a foil cutting device 23.1 and 23.2 upstream. In the film cutting devices 23.1 and 23.2, respectively, a supplied flat film is cut into a plurality of individual ribbons.

The subsequent treatment of the band of ribbons 28.1 and 28.2 in the extrusion lines 1.1 and 1.2 is identical to the aforementioned embodiment, so that the ribbon share 28.1 between the godet deliveries 7.1 and 9.1 and the band of ribbons 28.2 between the godet deliveries 7.2 and 9.2 be stretched.

In order to produce a crimping on the ribbon share 28.2 of the extrusion line 1.2, is in the in Fig. 4 illustrated embodiment, the crimping device 11 formed by crimping rollers 31 and a stuffer box 30 which are immediately downstream of the second godet 9.2 supply. As a result, all the bands of ribbon share 28.2 can be curled together. The strip of ribbons 28.2 is guided for this purpose through a nip between the crimping rollers 31 and conveyed into the stuffer box 30.

On the outlet side of the crimping device 11, the ribbon share 28.2 is attracted by a third godet delivery unit 26 with a plurality of driven godets and fed for wrapping and winding the subsequent composite device 15 and take-up device 17.

On the outlet side of the extrusion line 1.1, the ribbon of ribbons 28.1 is divided by means of the guide strip 10.1 and on the outlet side of the extrusion line 1.2, the strip of ribbons 28.2 by means of the guide bar 10.2 to a plurality of fiber bundles. The bundles of fibers 28.1 associated fiber bundles are each formed of several smooth ribbon. The fiber bundles of the band of ribbons 28.2, in contrast, contain several crimped ribbons. Both fiber bundles are each fed to a wrapping station 16 for merging with the grass yarn. After winding both fiber bundles with a composite thread, the grass yarn is wound up in a subsequent winding station 18 into a coil.

At the in Fig. 4 illustrated embodiment of the device according to the invention, the ribbon share 28.1 and 28.2 are prepared with such adjustment of Galettenlieferwerke that the peripheral speed of the second godet delivery unit 9.1 of the extrusion plant 1.1 is equal to the peripheral speed of the third godet delivery plant 26 on the outlet side of the extrusion plant 1.2. Thus, the post-treatment of both bands of bands 28.1 and 28.2 can be performed with the same guide speeds.

The construction of in Fig. 4 extrusion systems shown for the production of the ribbon shares 28.1 and 28.2 is exemplary. In principle, additional treatment stages, such as, for example, a heat fixing or a further drawing stage, can be provided. Particularly advantageous for producing special effects in the grass yarn is fibrillation of the ribbon share 28.2 before curling. Thus, the extrusion system 1.2 could have a fibrillation device, which is arranged upstream of the curling device 11, by means of which a net-shaped structure is produced on each individual strip of the ribbon of fibers. This structure remains intact during crimping and only opens in a tufting process during the manufacture of a lawn carpet. This is how monofilament properties of the grass yarn are expressed.

The extrusion systems shown in the embodiments are used in pairs for the production of monofilaments or ribbons. These designs are also exemplary only. Basically, a combination of the embodiments according to Fig. 1 and Fig. 4 in such a way that in one of the extrusion lines only monofilaments are produced and produced in the second extrusion line only tapes so that the grass yarn is formed from a composite of monofilaments and ribbons.

In the embodiments shown, the number of Umwindestationen and Aufwickelstationen are exemplary. So it is common in large systems to arrange a plurality of such stations side by side along a machine longitudinal side.

LIST OF REFERENCE NUMBERS

1.1, 1.2

Extruders

2.1, 2.2, 2.3

extruder

3.1, 3.2

extrusion head

4.1,4.2

cooling bath

5.1, 5.2

Umlenkwerk

7.1, 7.2

first godet delivery

8.1,8.2

heater

9.1,9.2

second godet delivery

10.1, 10.2

guide rail

11

crimping

12

texturizing

14.1, 14.2, 14.3

galette

15

Connecting device

16

Umwindestation

17

takeup

18

coiling

19

idler pulley

21

grass yarn

22

Kitchen sink

23.1, 23.2

Foil cutter

24

texturing

25

delivery rolls

26

third godet delivery plant

27.1, 27.2

Monofilamentschar

28.1, 28.2

group of tapes

29.1, 29.2

fiber bundles

30

stuffer

31

crimping

32

composite thread

33

Tänzerarmregelung

34

traversing

35

pressure roller

36

hollow spindle

37

composite coil

Claims (14)

1. A method for the production of a turf yarn (21) for artificial turf, wherein in a first extrusion process, multiple monofilaments or ribbons (29.1) are produced from a first polymer material, wherein in a second extrusion process multiple monofilaments or ribbons (29.2) are produced from a second polymer material, and wherein the turf yarn is formed by a composite of multiple monofilaments or ribbons from the first extrusion process and multiple monofilaments or ribbons from the second extrusion process,
   characterized in that
   the monofilaments or ribbons (29.2) of one of the extrusion processes are crimped prior to being brought together with the other monofilaments or ribbons, wherein the crimped monofilaments or ribbons (29.2) and the flat monofilaments or ribbons (29.1) are produced in parallel next to each other, and are brought together in a winding station (16) with a composite thread (32).
2. A method according to claim 1,
   characterized in that
   the crimped monofilaments or ribbons are produced in the extrusion process prior to the crimping with a higher production speed than the flat monofilaments or ribbons.
3. A method according to claim 2,
   characterized in that
   the crimped monofilaments or ribbons are crimped by means of texturing in a compression chamber or by means of air texturing, wherein the production speed of the crimped monofilaments or ribbons following the crimping is the same as the production speed of the flat monofilaments or ribbons.
4. A method according to one of the claims 1 to 3,
   characterized in that
   the crimped ribbons are fibrillated in an additional treatment step prior to the crimping.
5. A method according to one of the claims 1 to 4,
   characterized in that
   the turf yarn (21) is wound into a spool (22) following the bringing together of the monofilaments and/or ribbons.
6. A method according to one of the claims 1 to 5,
   characterized in that
   the crimped monofilaments or ribbons are produced from the polymer material polyamide, and the flat monofilaments or ribbons are produced from the polymer material polyethylene, particularly from the type of polyethylene known as LLDPE.
7. A method according to one of the claims 1 to 6,
   characterized in that
   the flat monofilaments or ribbons are produced by coextrusion from two polymer materials based on polyethylene and having different colors.
8. A method according to one of the claims 1 to 7,
   characterized in that
   the crimped monofilaments or ribbons are divided into a number of fiber bundles each having a certain number of crimped monofilaments or ribbons, in that the flat monofilaments or ribbons are divided into a number of fiber bundles each having a certain number of flat monofilaments or ribbons, and that one fiber bundle with crimped monofilaments and/or ribbons, and one fiber bundle with flat monofilaments and/or ribbons are guided together for the purpose of winding and spooling.
9. An apparatus for carrying out the method according to one of the claims 1 to 8, having two extrusion devices (1.1, 1.2) arranged next to each other, for the purpose of producing monofilaments or ribbons (29.1, 29.2), and having a tie device (15) for bringing together multiple monofilaments and/or ribbons into a turf yarn (21),
   characterized in that
   a crimping device (11, 12) for crimping the monofilaments or ribbons (29.2) is arranged behind one of the extrusion devices (1.2), wherein the extrusion devices (1.1, 1.2) and the tie device (15) are arranged in a continuous process sequence and that the tie device (15) has a winding station (16) in which a tie thread (32) is wound around the monofilaments and/or the ribbons (29.1, 29.2) which have been brought together.
10. A device according to claim 9,
    characterized in that
    the extrusion devices (1.1, 1.2) each have at least one godet assembly (9.1, 9.2), and in that the godet assemblies (9.1, 9.2) of both extrusion devices (1.1, 1.2) can be driven and controlled independently of each other.
11. A device according to claim 10,
    characterized in that
    the crimping device (11) is designed as a compression chamber texturizer (12, 24, 25) in which a fiber bundle (29.2) or a fiber grouping (28.2) can be crimped.
12. A device according to one of the claims 9 to 11,
    characterized in that
    a spooling device (17) is arranged behind the tie device (15), and the turf yarn (21) can be wound into a spool (22) by means of said spooling device (17).
13. A device according to one of the claims 9 to 12,
    characterized in that
    the extrusion devices (1.1, 1.2) each have one or two extruders (2.1, 2.2, 2.3) for melting polymer materials.
14. A device according to one of the claims 9 to 13,
    characterized in that
    the tie device (15) has a plurality of winding stations (16), and in that a plurality of spooling stations (18) of the spooling device (17) are arranged behind the winding stations (16).

Images