EP0784109A2 - Method and apparatus for the manufacture of a multi-coloured yarn composed of differentially dyed continuous filament yarns - Google Patents

Abstract

To produce a multi-coloured yarn, using threads and filaments of different colours, the threads/filaments are gathered after they have been compacted, to be wound as a yarn. Also claimed is an apparatus with a common gathering /compaction stage (9) for all the threads/filaments (11.1, 11.2), a winder (10) for the assembled yarn (12) and a compacting unit (3) for each thread/filament, which is in before the gathering/compacting stage.

Description

The invention relates to a method and a device according to the preamble of the independent claims.

A method is already known from a European patent publication No. 0485871 B1 (Barmag), in which differently colored partial threads, each coming from a spinning shaft, are passed over a preparation and each through a pre-compaction, in order to subsequently stretch them by means of a pair of godets, in textured in a texturing nozzle, cooled on a cooling drum, compacted together in a swirling nozzle and then wound up.

The compacting between the preparation and the stretching godets are swirling nozzles per thread, which cause the known swirling constrictions. Such narrow points, which are inherently disadvantageous for texturing, are resolved again in this process by stretching by means of the stretching godets before the partial threads reach the texturing nozzle.

The present invention relates to the improvement of a method for producing yarn as published in U.S. Patent No. 4,025,595. Such a yarn contains at least two different filament bundles, each bundle being swirled separately and later the bundles being swirled together to form the yarn. The obvious "difference" between the two bundles of filaments affects their color by producing a multicolor yarn. It is therefore advantageous to explain this type of process with reference to two bundles of filaments of different colors, the color difference not being the essential feature of the invention. Effects "in relation to yarn structures and appearance of the yarn can be combined from filament bundles which have other "differences", for example those mentioned in US 4,025,595.

The process explained in US Pat. No. 4,025,595 was intended for relatively low spinning speeds in comparison with the modern spinning processes today. Furthermore, textured products could only be obtained by means of successive processes with intermediate products, in the so-called "spin-stretch-rinse process" as mentioned in the aforementioned US patent.

The production of similar yarns using modern on-line processes has proven difficult, in that a texturing step is included in the continuous process line. The swirling step published in U.S. Patent 4,025,595 tends to interfere with a texturing step. An attempt to solve this problem can be found in EP-B-485 871 and in EP-A-434 601. In these cases the filament bundle is treated above the texturing step to ensure that the two steps can be separated from each other with the aim of maintaining the "induvidiality" of the two filament bundles in the end yarn. These processes have achieved a degree of success, but they do not give yarn manufacturers the reliability and flexibility they need, given that "yarn manufacturers" form a different group of organizations with different marketing and product strategies.

The new invention includes a method of making a yarn with a plurality of different filament bundles, the method including the step of uniting the filament bundles, for example by intermingling, to thereby form a yarn. The method is characterized by the method step in which at least one bundle of filaments is treated individually above the connecting step and below all the preceding stretching, texturing and combining steps. The individual treatment can be provided to measure the degree of induvidiality of the treated filament bundle after the bundle has been joined obtained yarn product to increase. The individual treatment can include (for example) a treatment which increases the compactness of the fibril bundle (for example by swirling) at the entrance of the connecting step. In the preferred embodiment, each bundle of fibrils is treated individually and immediately prior to entering the joining step.

Insofar as previous treatment steps which brought the filament bundles together (for example texturing in a common texturing chamber) were used, it is necessary to separate the filament bundles again, if this is required in order to enable an individual treatment according to the present invention. In the preferred embodiment, the filament bundles are kept separate until the uniting step. On the other hand, it is not always possible for economic reasons to achieve this goal of "separate treatment until union", which is why various measures can be adopted to improve the keeping of the filament bundles separately, even if they are brought together before the union. Such measures include swirling and incorrectly rotating the individual bundles, for example before texturing together.

• Farbe
• Titer
• Anzahl der Fibrillen im Filamentbündel
• Polymertyp
• Anfärbbarkeit
• Querschnitt der Fibrillen
• Additive in den Fibrillenbündeln

The "difference" between two filament bundles which are processed according to the invention contain differences in

• colour
• Titer
• Number of fibrils in the filament bundle
• Polymer type
• Dyeability
• Cross section of the fibrils
• Additives in the bundles of fibrils

The invention provides a highly controllable method for influencing the structure and / or appearance of the yarn product, that is, it is a highly efficient method for creating "effects". This is thanks to the fact that the uniting step is immediately after the individual Treatment step follows because there are no intermediate process steps which tend to reduce the effect or which have to be considered to determine the degree of individual treatment, for example one type of individual treatment includes the step of "bringing the fibrils together" locally of a fibril bundle (by forming "bottlenecks"), the "local" connections being provided at intervals along the length of the filament bundle In a method according to the invention, the number of local connections per unit length of the filament can determine the tightness of the connection in the loc The uniformity and uniformity of the connection steps along the length of the filament bundle can be controlled with reference to the desired effect and without restrictions, given by other process steps besides the connection. As already proposed in US Pat. No. 4,025,595, it is possible to produce desired “effects” by “balancing” the individual treatment with the collective treatment in the connecting step.

With reference to the methods described in WO 96/09425 (Obj. 2509), an embodiment of the invention is described as an example, the main elements being shown in FIG. For the sake of simplicity, only two filament bundles I and II are shown. After the filament bundles have been spun separately (spinning beam and nozzle arrangement not shown), they are stretched by means of a first roll G1 and a second roll G2 before they are wound up in a winding machine W. (The illustration in Fig. A is only schematic). In the modification according to the invention, the filament bundles are treated individually at T1 and T2 and the treated filament bundles are combined in J to form a yarn.

B shows schematically an untreated filament bundle - fibrils from untreated filament bundles are free to "combine" with those from another untreated filament bundle when the two filament bundles are brought together. One way to limit the freedom of such fibrils to "join" is to provide "compact spots" S in each bundle, as shown in FIG. Such compact spots can be formed, for example, by swirling. Such compact places arise during the swirling when an air jet is blown across the running fibril bundle, which divides the fibril bundle into two parts and then causes an oppositely directed twist in both parts, which is released again after leaving the air jet, whereby the Mix the fibrils of the two bundles of fibrils together during this untwisting and thereby cause the bottlenecks. After the passage of the rear constriction, seen in the running direction, the same begins anew. Another method to limit the freedom of said "union" is to twist the filament bundle incorrectly, as shown, for example, in Fig. D. It is generally known that it is not possible to have a "real twist" in a running yarn ( Filament bundle) by means of false twist between two ends of the yarn, on the other hand, it is possible to form a kind of "reversal twist", as shown in FIG. D, in which the filament bundle has a first twist direction in the region R1 and a second twist direction in region R2 shows - it is also possible to "fix" this twist pattern by introducing twist stops into the yarn structure. The introduction of "twist stops" can be achieved by combining a treated bundle with another bundle to form a yarn, as is shown by J in FIG. A.

FIG. E schematically shows a device by means of which "compact places" S can be introduced on a filament bundle. The device comprises a common inlet (shown with the arrow P) and three exits (shown with small arrows within the figure). The filament bundle is passed one after the other at the three exits and is swirled in the process can be used in the "unification step" for bringing fibril bundles together to form a yarn, the air pressure used in the merging phase probably being much higher than in the individual swirling, for example 0.3 bar in the individual swirling (e.g. T ₁ and T ₂ ) and about 6 bar in the union vortex (J). The distance between the units T ₁ and T ₂ from the unit J should be sufficiently large. to avoid mutual interference, unless such interference is acceptable in relation to the effect to be achieved (accidental influences).

The arrangement shown in Fig. A is "simple" in that the filament bundles can be kept clearly separate from each other (with a distance between the filament bundles) up to the merging step J. However, this is not always possible, as is the case, for example, in FIG Arrangement of EP-A-434 601. In such cases, it is desirable to provide additional means to avoid "fusing" the fibrils of the filament bundles before (controlled) intermingling in stage J. The term "fusing" is intended to the tendency is pointed out, which exists when two originally separately guided filament bundles mix in an uncontrolled manner by the two filament bundles coming into contact with one another if no measures are taken to avoid this mixing. However, suitable measures are from the known prior art.

The invention is not restricted to the treatment of the filament bundles by means of air nozzles. The treatment of the individual filament bundles and the joining of the bundles can also be carried out, for example, by using adhesive material or by forming "welds". Depending on the effect that is to be achieved in the yarn, it may also be desirable to leave a bundle of filaments untreated before forming the yarn by combining the bundles of filaments - the untreated bundle gives the yarn a "fluffy" effect.

The advantage of the invention is that by compacting the individual partial threads (T1 and T2 in FIG. A) after texturing (FIGS. 1-8) and before compacting the combined partial threads (J in FIG. A), which will be referred to as collective compacting later. the quality ie the safety in the color separation and thus the color detection of the individual partial threads in the yarn is repeatedly improved over the prior art.

Before the description of the figures, reference is made to a number of further detailed solutions for carrying out the compacting or texturing, to which reference is made in the course of the description of the other figures.

"Compacting" is to be understood to mean the compression of the fibril bundle, either over the entire length of the fibril bundle by means of a false twist or selectively by means of a swirling nozzle.

For example, swirling nozzles which can be used as compacting agents are known from US Pat. No. 4,025,595 or US Pat. No. 3,364,537 or US Pat. No. 3,426,406, and false twist nozzles are known from EP-0434601 A1, which can also be used as compacting agents in the manner described therein .

In addition, a texturing nozzle is known from EP-0039763, EP-0110359 A1, EP-0123072 A1, EP-0123829, which can advantageously be opened to allow 16 one or more partial threads to be inserted for texturing, the texturing after closing again Texturing nozzle takes place. Since such texturing nozzles in the conveying part work according to the injector principle, they are not only able to continue feeding the partial threads after the nozzles have been closed, but can also suck them in if necessary, so that non-opening texturing nozzles can also be used to bring the threads into the texturing nozzle. Another possibility is to bring the threads into and through the texturing nozzles using a suction gun.

Likewise, a texturing nozzle is known from CH-680140 A5, which has injection nozzles at the entrance, which eccentrically lead into the yarn guide channel in order to generate a protective twist in the partial thread.

In the texturing nozzles known from EP-0039763 A1, EP-0123072 A1, EP-0123829 A1, the partial thread is heated and conveyed in a heating and conveying element designed as a channel or chamber, and grafting or crimping or Texturing in a second chamber, in which the injected heated gas can escape again, so that a plug can be removed from the chamber. To cool the plug, it is placed on a transporting cooling element, for example a rotating cooling drum.

Another texturing device is known from EP-310890 A1 (Rolltex), which is composed of a heating and conveying channel for heating and conveying the partial thread, or the yarn, and a needle roller connected thereto for forming the yarn plug, the plug following the Needle roller is placed on a cooling drum to cool the graft.

Also known from US Pat. No. 3,255,508 (Mitsubishi) are texturing agents which are composed of a heating and conveying nozzle and a subsequent cooling drum, the formation of plugs resulting from the impact of the heated and conveyed thread on the cooling drum.

Fig. 1

eine Vorrichtung zur Erzeugung eines erfindungsgemässen mehrfarbigen Garnes aus anders anfärbenden oder unterschiedlich farbigenTeilfäden, schematisch dargestellt,

Fig. 2

eine Variante eines Teiles von Fig. 1,

Fig. 3

eine Variante der Vorrichtung von Fig. 1,

Fig. 4

eine Variante eines Details der erfindungsgemässen Vorrichtung,

Fig. 5 bis 9

je Varianten eines Teiles der Fig. 1,

Fig. 10

ein Querschnitt von Fig. 9 entsprechend den Schnittlinien I-I (Fig. 9) und

Fig. 11

eine Variation des Querschnittes von Fig. 10.

The invention will now be further explained on the basis of further exemplary embodiments. It shows:

Fig. 1

an apparatus for producing a multi-colored yarn according to the invention from partially colored or differently colored partial threads, shown schematically,

Fig. 2

a variant of a part of Fig. 1,

Fig. 3

a variant of the device of Fig. 1,

Fig. 4

a variant of a detail of the device according to the invention,

5 to 9

each variant of a part of FIG. 1,

Fig. 10

a cross section of Fig. 9 corresponding to the section lines II (Fig. 9) and

Fig. 11

a variation of the cross section of FIG. 10.

1 shows a device for producing a multicolored yarn with here, for example, three spinning shafts, each of which produces differently colored partial threads 11 or 11.1 or 11.2. These partial threads 11, 11, 11, 2 are each guided over a preparation agent 2, which is usually an oiling agent.

Such yarns can also consist of two or more threads.

After the preparation means 2, the partial threads 11-11.2 each arrive separately in an associated compacting means, referred to as precompacting means 3, which is either a swirling means known per se or preferably a false twisting means known per se, both means having already been mentioned at the beginning as prior art.

After the precompacting means, the partial threads 11-11.2 are stretched on stretch godets 4 to a predetermined dimension, or heated, ie brought into the area of the glass transition point or into the thermoplastic area. When using swirling agents as precompacting agents, the swirling becomes provided in such a way that, when the interlaced partial threads 11-11.2 are stretched, the interlacing constrictions, depending on the interlacing type, are at least partially removed again in order to avoid any loss in the texturing quality of the yarn.

After the stretching godets 4, the partial threads 11-11.2 are textured together in a texturing nozzle 5, the partial threads primarily being sucked into a heating and conveying element 6 on the basis of a conveying system acting on the injector principle, heated and conveyed into a crimping element 7 in order to be there due to the Escaping the heating and conveying gases between fins 32 or other equivalent air-permeable elements and the resulting reduction in the conveying speed and further resulting friction of the individual fibrils of the threads on the wall of the cooling and crimping element 7 are compressed into a plug, which is then placed on a cooling drum 16 is given. The plug before or after the cooling drum 16 is divided by the operator into crimped partial threads 11.3-11.5, which also applies to FIGS. 2 to 6 and 8 to be described later, and via a take-off roller 33 and, if necessary, via deflecting thread guide 31 each an associated compacting means, referred to as post-compacting means 8 - in connection with FIG. A as T1 or T2 -, here also the post-compacting means 8 either being a known twist means or a false twist means mentioned in connection with FIG. D, or preferably being known per se Is a swirler. Said detection by the operator takes place with the aid of a suction pistol known per se, the separation into the partial threads being done manually and with the help of thread guides (not shown here) per partial thread.

After the post-compacting means 8, the partial threads 11.3-11.5, if necessary, are combined on a godet 34 via deflecting thread guides 31, then compacted together in a compacting means referred to as collective compacting means 9 or in connection with FIG. A, that is, preferably preferably together with swirled in known means or rotated wrongly together, in order to be passed over a godet 35 again as yarn 12 and then wound up in the winder 10. Since these godets are conveyor rollers, one or both godets 33 or 34 before or godet 35 after compacting means 9 or all three godets 33, 34 and 35 can be dispensed with, if necessary, depending on the material must be determined.

In the latter case, the threads are drawn directly from the winder 10 from the cooling drum 16 and through the post-compacting means 8 and collective compacting means 9.

FIG. 2 shows a heating and conveying element 15 with the same functions as element 6 and then a cooling drum 16 known per se from US Pat. No. 3,255,508 as a variant compared to FIG. 1 for texturing the partial threads 11-11.2 after the stretch godets 4 with the additional function of element 7, ie the plug is formed on the cooling drum 16 and cooled. The other elements correspond to the elements already described for FIG. 1 and are therefore not mentioned again.

Fig. 3 shows as a variant of Fig. 1 instead of the spinning shafts 1 individual bobbins with colored partial threads, also called colored bobbins 13, and as a further variant for texturing the partial threads marked here with 14-14.2, after the stretch godets 4 a heating and Conveying element 17, which corresponds functionally to the aforementioned elements 6 and 15, with a subsequent needle roller 18 and subsequent cooling drum 16 and a plug deflection element 30 provided between them, the combination of the elements 17, 18, 16 and 30 being described in EP-0310890 A1, which is why reference is made to this EP document for further details. The remaining elements correspond to the elements of the aforementioned figures and are therefore not mentioned again.

On the other hand, it should be mentioned that the use of supply spools 13 (e.g. colored spools) instead of spinning chutes 1 is possible for all variants of the other figures.

FIG. 4 shows a combination of stretch godets 4.1 with a surface heating element 19 known per se, which is provided between the two stretch godets and additionally serves for heating by means of godets 4 or solely for heating the partial threads 11-11.2 or 14-14.2 sliding thereon.

Fig. 5 shows a variant of a part of Fig. 1, insofar as a texturing nozzle 20, which has a suction part 21 for each thread 11-11.2 or 14-14.2, which gives the corresponding thread a protective twist, followed by the Partial threads in the heating and conveying element 21.1 are heated and conveyed by means of the conveying medium and crimped into a plug in the subsequent crimping element 22. The individual heating and delivery channels of the partial threads open together in the crimping element, i.e. that imaginary planes of symmetry of the individual heating and delivery channels intersect in front of the crimping element. The other elements correspond to the elements already described and are therefore not mentioned again.

6 shows, compared to FIG. 5, a further variant of a texturing nozzle in which a texturing nozzle 23 for the partial threads has a heating and conveying element 24 and also a common crimping element 25 in order to heat and convey the individual partial threads separately, and to texture together. The individual heating and delivery channels of the partial threads open next to one another in the crimping element, i.e. that imaginary planes of symmetry of the individual heating and conveying channels intersect outside the heating and conveying element 24, the intersection not being shown.

The other elements correspond to the elements already described and are therefore not mentioned again.

FIG. 7 shows a variant compared to FIG. 6 insofar as there are three individual texturing nozzles 28, each with a heating and conveying element 26 and a crimping element 27 connected thereto per thread, the three plugs either from the corresponding crimping element can be placed next to one another on a common cooling drum 16 via conveyor rollers 29 or directly, ie according to the arrangement, so that the division into partial threads mentioned for FIGS. 1-6 and 8 is no longer necessary here. The other elements correspond to those described so far and are therefore not mentioned again.

FIG. 8 shows a variant of FIG. 3 in that the cooling drum 16 is dispensed with and in its place a cooling air application element 36 and a cooling air suction element 37 are provided around a predetermined area of the needle roller 18, by means of which the plug located on the needle roller is provided cooled and then guided over a deflecting thread guide 31 onto the godet 33 and further as previously described. The variations in the use of the godets 33, 34 and 35 described for FIG. 1 can also be used for the arrangement of the described elements of this figure, as well as for the arrangement of the described elements of all other figures.

FIG. 9 shows a texturing nozzle 38 which can be used in the devices of FIGS. 1 to 8 and which is provided with a heating and conveying element 39 which contains a separate heating and conveying channel for each part thread as well as a separate crimping channel in the crimping element 40.

The advantage of this design compared to the three individual texturing nozzles of FIG. 7 is that the compact embodiment is thermally and production-wise, which can lead to cheaper manufacturing and operating costs.

In Fig. 10 the cross section of the crimping element 40 is shown, which is Crimping element composed of the two outer walls 41 and the intermediate walls 42 and the lamellas 43 located between them. A free space is provided for the plug formation, which is shown with the thread tangle 45 shown. Furthermore, the outer walls 41, the intermediate walls 42 and the fins 43 are fastened to the heating and conveying element 39 by means of an upper ring flange 46, while the outer walls 41. of the intermediate walls 42 and the fins are held together at the outlet of the crimping element 40 by means of a lower ring flange 47 he follows.

44 shows the manner in which the air can escape from the individual channels (only shown for one channel) of the crimping element.

Advantageously, the thread-surrounding parts of the texturing nozzles, in order to be able to insert the part threads easily, can be opened in accordance with the aforementioned EP-0039763 etc., which is why the texturing nozzle 38, as mentioned earlier, can be separated into two halves, which is indicated by the imaginary plane of symmetry 48 .

FIG. 11 shows a variant of the cross section of FIG. 10 in that lamellae 49 are arranged in a radial manner compared to the parallel arrangement of lamellae 43 in FIG. 10. The other elements correspond to the elements of FIG. 10 and are not repeated.

It should also be mentioned that in the figures, the partial threads still to be crimped up to and with the texturing agent with 11-11.2 or 14-14.2 and the partial threads crimped after the texturing agents up to the collective compacting agent 9 with 11.3-11.5 or 14.3-14.5 and subsequently are marked as yarn 12.

Likewise, in all variants of FIGS. 1-11 either partial threads can be processed by the spinning chutes 1 or by the bobbins 13.

Where necessary, deflecting thread guides 31 are also provided in the figures, which is shown schematically in the figures.

It goes without saying that for all elements provided with an injector principle, a twist distribution principle shown with CH-680140 A5 can advantageously be used in order to impart a protective twist to the threads guided through the texturing nozzle, which, in addition to the otherwise mentioned compacting of the part threads, ensures that in the case of multiple guiding of threads through a texturing nozzle, the individual partial threads become less entangled in one another, but essentially remain side by side, the upper twist stop of the corresponding partial thread being the godet of the pair of godets 4 preceding in the thread running direction.

A protective twist is particularly useful if the threads are textured in a common texturing nozzle, as shown in FIGS. 1-5.

It should also be mentioned that when the false twist principle is used to compact the part threads after the preparation means 2, these preparation means 2 can be used as a twist stop if no deflecting thread guides 31 are used for any reason, and that the term “part thread with a different color” also applies It is to be understood that such threads in the color process, when using, for example, the same color, contain different, but desirable, color effects.

It should also be mentioned that in the post-compaction using swirling nozzles, the compacting effect is changed by means of pressure (bar) and / or quantity (kg / h) and / or the temperature of the gas, for example air or steam, by changing the number of swirls per unit length of the thread turns out to be more or less selectable. This is used according to the invention in order to vary the color effect of the finished yarn in addition to the variation of the color effect through the selection of the colors.

In addition, these parameters (pressure, quantity, temperature of the gas) can be selected differently for each thread, so that there is a difference in the interlacing and therefore in the intensity of the color separation or color detection in the yarn from thread to thread.

Legend

1

Spinning shaft with or without subdivisions

2nd

Preparation agent

3rd

Precompacting agent

4-4.2

Stretch godets

5

Texturing nozzle

6

Heating and conveying element

7.1-7.3

Curling element

8th

Post-compaction agent

9

Collective compacting agents

10th

Winder

11-11.2

Partial threads

11.3-11.5

crimped threads

12th

yarn

13

colored coils

14-14.2

Partial threads

14.3-14.5

crimped threads

15

Heating and conveying element

16

Cooling drum

17th

Heating and conveying element

18th

Needle roller

19th

Surface heating element

20th

Texturing nozzle

21

Heating and conveying and swirl element

22

Curling element

23

Texturing nozzle

24th

Heating and conveying element

25th

Curling element

26

Heating and conveying element

27

Curling element

28

Texturing nozzle

29

Conveyor rollers

30th

Deflecting element

31

Deflection thread guide

32

Slats

33

Godets

34

Godets

35

Godets

36

Cooling air application element

37

Cooling air extraction element

38

Texturing nozzle

39

Heating and conveying element

40

Curling element

41

Outer wall

42

Partition

43

Slats

44

Air outlet direction

45

Thread tangle

46

upper flange

47

lower flange

48

Plane of symmetry

49

Slats

I, II

Bundle of fibrils

G1, G2

Godets

T1, T2, J.

Compacting agent

S

Eugstellen

R1, R2

Rotation in the bundle of fibrils

P

Gas pressure

Claims (14)

Process for producing a multi-colored yarn from partial threads with different coloring or different colors, the partial threads being subjected to a collective compaction before they are fed together as a yarn to a spin-up,
characterized in that the individual partial threads are subjected separately to a compaction called post-compaction before the collective compaction. A method according to claim 1, characterized in that the partial threads are subjected to at least one of the following treatments before the post-compaction: - a stretch - a texturing. A method according to claim 1, characterized in that a pre-compaction is carried out separately for each thread before stretching or texturing. A method according to claim 1, characterized in that said compaction is carried out either by means of a vortex compaction and / or by means of a false twist compaction. A method according to claim 1, characterized in that the collective compaction takes place before the winding. A method according to claim 1, characterized in that the part threads are textured together. A method according to claim 1, characterized in that the individual part threads are textured separately. Method according to claim 3, characterized in that the pre-compaction is a false twist compaction and the post-compaction and the collective compaction are each a swirl compaction. A method according to claim 1, characterized in that a change in the color effect of the finished yarn (12) is carried out by varying at least one of the following parameters when swirling in the post-compaction, namely: - the pressure (bar) - the amount (kg / h) - the temperature (° C) of the gas used for the swirling, for example air and / or steam. Device for producing a multicolored yarn from differently colored or differently colored partial threads - With a common compacting agent, also called collective compacting agent (9), for all part threads (11.3 - 11.5, 14.3 - 14.5) - and a winding (10) for a yarn (12) composed of the partial threads, - characterized, - That in front of the collective compacting means one compacting means named as post-compacting means (8) is provided per thread. Apparatus according to claim 10, characterized in that at least one of the following treatment agents are provided before the post-compacting agent: - an extender - a texturing agent Apparatus according to claim 10, characterized in that precompacting means (3) per thread are provided in front of the texturing agent. Apparatus according to claim 10, characterized in that the compacting means are optionally swirling means and / or false twist means. Device according to claim 13, characterized in that the precompacting means are each a false twist means and the postcompacting means or the collective compacting means are each a swirling means.

Images