EP0362214A1

EP0362214A1 - Sewing yarn, and process and device for manufacture thereof.

Info

Publication number: EP0362214A1
Application number: EP88903225A
Authority: EP
Inventors: Karl-Heinz Butzheinen
Original assignee: ACKERMANN-GOEGGINGEN AG; ACKERMANN GOEGGINGEN AG
Current assignee: ACKERMANN-GOEGGINGEN AG; ACKERMANN GOEGGINGEN AG
Priority date: 1987-05-27
Filing date: 1988-03-30
Publication date: 1990-04-11
Anticipated expiration: 2008-03-30
Also published as: KR890701813A; AU606154B2; FI85291B; NO171283C; EP0362214B1; NO890177D0; DE3875734D1; NO171283B; FI85291C; FI895600A0; AU1621588A; DK166691B1; WO1988009403A1; ATE82023T1; DE3717921A1; DK588989A; NO890177L; DE3717921C2; DK588989D0; CA1330411C

Abstract

In the case of yarns consisting of at least two basic yarns bounded together by a hot-melt adhesive yarn, it is difficult to achieve satisfactory bonding while maintaining the required yarn properties. In particular, this type of yarn requires very strong twisting. To overcome these drawbacks, it is proposed that the basic yarns consisting of multiple thread filament yarns are swirled with at least one multiple thread adhesive yarn, so that as a result of the formation of loops and curves along the yarn cross-section during swirling, strong bonding is obtained together with other excellent yarn properties.

Description

Yarn, in particular sewing thread, and method and device for the production thereof

The invention relates to a yarn, in particular

Sewing thread, with at least one basic thread and at least one hot-melt adhesive thread serving to glue the thread composite, and to a method and a device for producing this thread.

The adhesive thread provided in such yarns has the purpose of strengthening and gluing the yarn composite or the twisted composite. In particular, the twists or twists of the threads should be fixed so that they cannot move against one another during sewing, for example. However, this adhesive bonding or bonding must be sufficiently elastic and flexible so that no wire yarn or wire thread is produced.

A known method of the type mentioned at the outset

REPLACEMENT LEAF I rests on the idea of twisting the thermoplastic adhesive thread with the base threads in such a way that it comes to lie in the twisting center as far as possible and the base threads twisted under increased tension to seal the adhesive thread from the outside.

5 close so that the adhesive thread plasticized for the purpose of gluing by heat treatment cannot escape to the outside. However, this requires a very high yarn twist, which means that the manufacturing outlay is undesirably high. Nevertheless, the seal is not complete, so that some of the _Q plasticized material can come out of the yarn composite. The yarns and twists bonded in this way also prove unsatisfactory with regard to a homogeneity of the bonding or bonding.

5 In addition to bonding by melting adhesive threads, bonding methods are also known which work with a chemical adhesive which is applied to the threads to be bonded and then solidified. The herge¬ by these methods presented yarns or threads, however, prove to _Q in terms of the durability of the probe in need of improvement.

The invention has for its object to provide a yarn of the type mentioned, despite which increased

Stability of the yarn composite, no yarn twist is required 5, and to specify a method and a device for producing such a yarn.

According to the invention, this object is achieved in that the base thread formed by a multifilament base filament yarn and the adhesive thread formed by a multifilament adhesive filament yarn are intermingled with one another.

The swirled structure provided in the yarn according to the invention, as can be achieved, as is known, by air-blast texturing in a texturing nozzle, creates particularly favorable conditions for the l Bonding, ie the mutual gluing of the individual filaments of the fila forming the basic threads, which are therefore referred to as basic filament yarns, by means of the adhesive filament yarns added. By means of the 5 intermingling of the individual filaments of the multifilament basic filament yarn and the individual filaments of the multifilament adhesive filament yarn at least one of the base or adhesive filament yarns loops and bows of its individual filaments, which are distributed over the cross-section of the Q yarn composite, which leads to a very stable and homogeneously distributed bonding by means of the adhesive filaments melted during the bonding process. Because of the high stability of the bonding of the yarn composite achieved thereby, a yarn twist can be dispensed with in the yarn according to the invention. If only a single Grundfilamentgarn is provided in the inventive yarn, the loops and bows of the single filaments of the case extend Klebefilamentgarnes across the individual filaments of this ein¬ Zigen Grundfilamentgarnes therethrough and holding a result of their fusion caused by _Q adhesive effect of the individual filaments Grundfilamentgarnes together. The individual filaments of the base filament yarn can run parallel to one another essentially without intermingling. A further increase in cohesion in the yarn composite is obtained, however, by the fact that the individual filaments of the base filament yarn also interlock with one another with loops and bows obtained during the interlacing. In the event that the yarn according to the invention is made up of a plurality of base filament yarns, the loops and arches of the individual filaments of the adhesive filament yarn penetrate the individual filaments of the various base filament yarns.

In one embodiment of the yarn according to the invention, in which at least two base filament yarns are provided, 5 it proves to be particularly advantageous that the individual filaments of the base filament yarns with loops and bows l are intermingled with each other. Since the individual base filament yarns with the bows and loops of their individual filaments penetrate each other and this constricted structure is thus affected by the adhesive filament yarn or yarns

5 very many places is glued together, a particularly solid yarn composite is created.

In such an embodiment of the yarn according to the invention, in which at least two multifilament _Q base filament yarns are provided, there is an advantageous one

Further training in that the individual filaments of the one as

Core serving basic filament yarn run approximately parallel and from the loops and arches formed by the interlacing

the individual filaments of the other 5 basic filament yarn serving as an effect are interspersed. In this embodiment, essentially no loops and arches are formed on the base filament yarn serving as the core, so that the core gives the yarn composite a high tensile strength. However, since the loops and arches of the basic filament yarn serving as an effect cross the approximately parallel individual filaments of the basic filament yarn serving as the core, a very well-bonded yarn composite is also produced here by means of the adhesive filament yarn or yarns. 5

In a preferred embodiment of the yarn according to the invention it is provided that loops and arches of the base filament yarn or yarns formed by the intermingling, viewed in cross-section of the yarn composite, _{Q are contracted} to a size corresponding approximately to the cross-sectional size of the non-intermingled yarn composite. The thread formed in this way is particularly suitable as a sewing thread because, because of the contracted loops and bows, the compact structure of the surface of the thread required for sewing purposes is created, which nevertheless brings about sufficient entrainment of cooling air during sewing.

REPLACEMENT LEAF l One possible choice of material is that the

Basic filament yarns consist of a higher melting point than the adhesive filament yarns of polyamide or polyester. In particular, it is advantageous that the

5 base filament yarns and / or adhesive filament yarns have a large number of filaments. This large number of filaments or capillaries achieves a particularly good interlacing effect.

The adhesive filament yarns advantageously consist of one

Copolymer, a copolyamide being particularly suitable as a copolymer. In this case, the melting point of the adhesive filament yarns, which must be below that of the base filament yarns to be bonded, can be selected between 60 and 160 ° C and thus be adapted to different types of use. The proportion of the copolymers forming the adhesive filaments depends on the desired composite and the intended use. With high proportions of adhesive filaments there is a strongly bonded yarn character, while with low proportions of the adhesive filaments a textile structure of the yarn composite is obtained, which is, however, very well bonded.

A method provided in the context of the invention for producing the yarn according to the invention, in which at least one base filament yarn is combined with at least one melt-adhesive adhesive filament yarn to form a yarn composite and bonded to one another by a heat treatment which triggers the adhesive effect, is characterized in that the multifilament base filament yarn and the multifilament adhesive filament yarn is swirled together by air-blast texturing and then fixed lengths of the swirled yarn composite are each subjected to the heat treatment.

While loops and arches of the base filament yarns and the adhesive filament yarns are initially distributed over the cross-section of the yarn composite by air-blasting texturing,

REPLACEMENT LEAF this filament yarn composite shrinks during heat treatment, so that it solidifies by shortening the loops and arches. Simultaneously with the shrinking process wi d by the heat at the level of the melting temperature

5 adhesive filaments acting temperature triggers their adhesive effect. The tensions occurring in the yarn composite during the heat treatment favor a permanent and compact bonding, because the bonding process takes place in the manner of a pressure bonding. The airblast textured single yarns or single yarns produced by the process according to the invention achieve properties which are at least the same as those of comparable yarns. In terms of sewing properties, the conventional threads are even surpassed. 5

In a further embodiment of the invention

The method provides that the base filament yarns and the adhesive filament yarns are fed to the air-blast texturing process with different advance deliveries. Due to the possibility of the selective setting of this pre-delivery, i. H. If the feed speed exceeds the discharge speed, the shape and size of the loops and arches formed during the air blowing texturing process can be controlled. 5

In this context, one way of carrying out the process is that the base filament yarn with a low pre-delivery, in which the individual filaments only open to one another, and the adhesive filament yarn with a higher pre-delivery θ are fed. This ensures that the individual filaments of the base filament yarn or yarns diverge during the air-texturing process, but essentially remain parallel without the formation of loops and arches, while the individual filaments of the adhesive filament yarn, which has a higher initial delivery, cross the yarn direction between the individual filaments of the or the

REPLACEMENT LEAF Base filament yarns are blown in and when the adhesive effect is subsequently triggered, the individual filaments of the base filament yarn or threads bond to one another.

A variant of this type of process management then consists in the fact that at least one further base filament yarn is supplied with a higher advance delivery. This further base filament yarn, which can be, for example, an effect filament yarn, thus also forms loops and arches similar to the adhesive filament yarn, which penetrate between the individual filaments of the other base filament yarn supplied with little advance delivery. In this way, a well-bonded core-effect yarn structure is achieved with the method according to the invention.

Another embodiment, however, consists in that the base filament yarn and the adhesive filament yarn are supplied with approximately the same advance delivery, in which the individual filaments of the base filament yarn and the adhesive filament yarn are swirled evenly among one another. This also creates a loop structure on the base filament yarn, which leads to particularly good adhesion.

A particularly advantageous embodiment of the method according to the invention is characterized in that the intermingled yarn composite is stretched before the heat treatment. As a result of this stretching following the air blast texturing, a controlled shortening and reduction of the loops and bows is achieved, which contributes to a further consolidation of the yarn composite and to a compact structure of the outer surface of the yarn composite, which is particularly important for sewing threads.

Finally, in a further embodiment of the method according to the invention it is also provided that the yarn composite is cooled after the heat treatment. This immediate

REPLACEMENT LEAF *! Coolable after the gluing or bonding accelerates the gluing process and the hardening of the bonding.

5 Even though no yarn twist is required because of the flawless bonding achievable with the invention, in a further embodiment of the method according to the invention it can additionally be provided that the yarn composite is twisted before the heat treatment. This can be done in the same process by • 10 false wires, or by twisting and subsequent processing in a separate process.

Alternatively, in another variant, however, a post-treatment of the yarn is also possible by rotating the γc heat-treated yarn composite.

A device provided within the scope of the invention for carrying out the method according to the invention has an input side with at least one multifilament

_2Q base filament yarn and at least one multifilament adhesive filament yarn feedable air blast texturing device and a fixing device downstream of the air blast texturing device, in which the adhesive effect has a lower melting point than the base filaments

2g of adhesive filaments can be triggered by heat treatment of fixed lengths of the yarn composite that can be fed from the air blowing texturing device.

The device according to the invention is characterized by ei¬

30 NEN simple structure and can be easily achieved by conventional components of air texturing systems. The structure according to the invention leads to a trouble-free process with a high production output.

35 In an expedient embodiment of the device according to the invention, the

REPLACEMENT LEAF Air blast texturing device upstream of a feeder, through which the delivery speed for the individual filament yarns can be selectively adjusted. Due to the different supplies or leads of the base and adhesive filament yarns to the air-blasting texturing device, the yarn character of the yarns produced can be adapted to the desired field of application.

In this context, it proves to be expedient from a constructional point of view that the supplying plant has two pairs of pinch rollers connected in series for each basic filament yarn to be fed, the conveying speed of which can be selectively adjusted. With this simple construction, not only can the supply or advance of the base filament yarns fed to the texturing device be individually adjusted, but, if necessary, the feed of the base filament yarns can be drawn between the pairs of pinch rollers connected in series, which effect the conveyance of the base filament yarns . Such drawing is necessary on the one hand when using pre-oriented base filament yarns (POY yarns) in order to achieve the final drawing suitable for their processing. Another purpose is, on the other hand, to give the base filament yarns a drawing which serves to trigger shrinkage during the heat treatment.

In a preferred embodiment of the device according to the invention, a stabilizing device for stretching the yarn composite supplied by the air blowing texturing device is provided between the air blowing texturing device and the fixing device. As a result, the stretching process which is advantageous for the desired yarn structure and which leads to a shortening and reduction of the loops and arches produced in the air blast texturing can be carried out simply with the device according to the invention.

REPLACEMENT LEAF In this connection it is expedient from a structural point of view that the stabilizing device has two pairs of clamping rollers spaced apart in the conveying direction, of which the pair of clamping rollers arranged downstream in the conveying direction has a higher conveying speed than the pair of clamping rollers arranged upstream. With this arrangement, the yarn composite is held in a conveying manner by each of the pairs of pinch rollers and, at the same time, is stretched in the desired manner because of the different conveying speed between the pairs of pinch rollers. Since the stabilizing device is arranged upstream of the fixing device, the downstream pair of pinch rollers of the stabilizing device can simultaneously form the entrance of the fixing device and can be used to determine the length of the yarn lengths located in the fixing device on the input side.

Provided for the implementation of the erfindungsgeraäßen in one embodiment of the process _Q cooling operation is provided in a further embodiment of the device according to the invention in that the fixing device is on the output side downstream of a cooling device. It is particularly expedient here that the cooling device is arranged between a pair of clamping rollers on the input side and a winding device having a clamping roller and a winding roller. This pair of clamping rollers on the input side of the cooling device can be formed, for example, by a pair of clamping rollers on the output side of the fixing device, which thus θ on the one hand defines the yarn length provided in the fixing device on the output side and at the same time determines the supply for the yarn length passing through the cooling device on the input side.

5 Further features, details and advantages of the invention result from the following description and the drawing.

REPLACEMENT LEAF to which express reference is made to the disclosure of all details not mentioned in the text which are essential to the invention. Show it:

₎ Figure 1 is an apparatus for performing a driving Ver¬ for producing a Garnverbundes of two Grundfilamentgarnen and an adhesive -. Filament yarn. which has an air texturing device and a fixing device,

10

Fig. 2 shows the use of the device of Fig. 1 for the production of a yarn composite from only a base filament yarn and an adhesive filament yarn.

According to FIG. 1, a device for producing a sewing thread has a feeder 1, which in the exemplary embodiment shown is provided with three mutually parallel conveying paths for three filament yarns to be combined into a yarn composite. The number of funding routes shown can be in

2o be different from other embodiments. However, the minimum number is given by at least two funding channels.

A multifilament, which is a core of a number of individual filaments, runs along one of the conveying paths.

25-pointing, basic filament yarn 2, which is drawn off from a bobbin 3. The conveying path intended for the basic filament yarn 2 has in particular two clamping roller pairs 4, 4 'connected in series in the conveying direction, through which respective clamping gap the basic filament yarn 2 runs practically without slip and is conveyed as a result of a drive acting on the clamping roller pairs 4, 4' . A further conveying path having the same structure is intended for a further multifilament base filament yarn 5 which serves as an effect and is drawn off from a spool.6. The reference numerals 7,7 'denote the

REPLACEMENT LEAF Pinch roller pairs 4, 4 'of the pinch roller pairs of the feed path corresponding to the base filament yarn 2 of the feed path for the base filament yarn 5. The third feed path is intended for a multifilament adhesive filament yarn 10 drawn off a bobbin 8, only a single, driven pinch roller pair 9 being provided in this feed path is.

The conveying speed of the pinch roller pairs 4,4 'of the base filament yarn 2 can be adjusted independently of one another, so that by choosing a conveying speed for the downstream pinch roller pair 4 * which exceeds the conveying speed of the upstream pinch roller pair 4 *, the base filament yarn 2 can be stretched between the pinch roller pairs 4,4'. The same adjustability of the conveying speed is present with respect to the pairs of pinch rollers 7, 7 ', whereby a stretching of the base filament yarn 5 is also possible. In contrast, such a stretching is not provided for the adhesive filament yarn 10.

The stretching which takes place between the pairs of pinch rollers 4, 4 'and 7, 7' can be a stretching of the kite desired for later triggering of shrinkage. On the other hand, however, when using pre-oriented or POY base filament yarns, a hot drawing is provided, by means of which the strength is increased and the final drawing of the POY base filament yarns is brought about.

The feeder 1 feeds the base filament yarns 2.5 and the adhesive filament yarn 10 to an air blast texturing device 11, in which the filament yarns 2, 5 and 10 are brought together to form a yarn composite and are intermingled by the air flow blown into the air blast texturing device 11 by the texturing nozzle. The basic filament yarn 2 serving as the core passes through water before entering the air flow. This type of swirl is well known

REPLACEMENT LEAF and is therefore not explained in more detail here. However, it is pointed out that the conveying speeds of the pairs of pinch rollers 4 ', 7' and 9 are set to a specific advance delivery depending on the desired type of swirling.

5 den. The intermingling in the texturing nozzle means that the adhesive filament yarn 10 and the base filament yarns 2.5 mix with one another and devour each other by causing loops and arches on the individual filaments during the intermingling.

10

For example, the multifile serving as the core

Basic filament yarn 2 by means of the pair of pinch rollers 4 '

Air-blasting texturing device 11 can be supplied by means of a relatively small pre-delivery, which is just sufficient to enable mutual opening of the individual filaments of the base filament yarn 2, whereas the base filament yarn 5 serving as an effect is supplied with a higher pre-delivery. Then the loops and arches essentially form on the individual filaments of the one serving as an effect

20 base filament yarn 5 and penetrate the cross-section of the substantially parallel individual filaments of the base filament yarn 2 serving as the core. The adhesive filament yarn 10 can also be made with a corresponding delivery or an even higher one with the base filament yarn 5 serving as an effect

25 pre-delivery can be supplied in order to achieve an intensive distribution of its individual filaments over the cross-section of the base filament yarns 2.5. Alternatively, however, the base filament yarns 2.5 can also be supplied with the same high pre-delivery, whereby the two base

30 filament yarns 2.5 are blown together to approximately the same extent.

A stabilizing device 12 downstream of the air blowing texturing device 11 for the yarn composite 13 leaving the _g5 air blowing texturing device 11 has two spaced apart in the conveying direction

REPLACEMENT LEAF _ Pairs of pinch rollers 14, 14 ', between whose respective nips the yarn composite 13 is conveyed practically without slippage. A free-running roller 15 provided between the pairs of clamping rollers 14, 14 'serves only to deflect the length of yarn clamped between the pairs of clamping rollers 14, 14'. The conveying speed of the pinch roller pair 14 * downstream in the conveying direction is set higher than the conveying speed of the upstream pinch roller pair 14, which determines the rate at which the yarn composite 13 is drawn off from the air blast texturing device 11. As a result, the airblast textured yarn composite 13 is stretched to a degree determined by the choice of the conveying speeds, as a result of which the loops and arches are reduced and partially tightened. As a result, there is a solidification of the

• l base filament yarns 2.5 and the adhesive filament yarn 10 formed yarn composite instead.

The already more compact yarn composite leaving the pinch roller pair 14 'then enters a fixing device

20 16 a, on the output side of which the yarn composite, after deflection via a free-running roller 17, is clamped between a pair of clamping rollers 18 used for conveying. A heat treatment of the yarn composite takes place in this fixing device 16, under the influence of which the base filament yarns 2.5 shrink, so

25 that a tension is built up in the yarn length clamped between the clamping roller pairs 14 'and 18. The size of this tension is determined by a suitable setting of the conveying speeds of the pinch roller pairs 14 'and 18. Due to heat shrinkage, a delivery of the

2 _Q pinch roller pair 14 ', ie a conveyor speed exceeding the conveying speed of the pinch roller pair 18, may be required. At the same time, the temperature of the heat treatment is set such that the melting temperature of the adhesive filament yarn 10 is reached in the yarn composite, so

2g that this melts in contrast to the basic filament yarns 2.5 which have a higher melting temperature. This will

REPLACEMENT LEAF 1 entire yarn composite glued under tension. As a result of this adhesive bonding under tension, a compact, well-bonded yarn composite is produced from the yarn composite 13 leaving the air-blast texturing device 11 with a certain bulk.

Downstream of the pair of clamping rollers 18 on the output side of the fixing device 16, the yarn is fed via free-running deflection rollers 19, 20 to a take-up roller 22 which interacts with a clamping roller 21. In the area of the yarn length extending between the pinch roller pair 18 and the pinch gap formed by the pinch roller 21 and the take-up roller 22, a cooling device 23 is arranged behind the pinch roller pair 18. The yarn is cooled as it runs along this cooling device 23, which accelerates the full onset of the adhesive effect and the hardening of the bonding.

The method explained above with reference to the device

20 can simultaneously rensverlauf the structure of the. ^'The Luftblastexturiervorrichtung 11 leaving, 13 Garnverbundes fluidized recognize. As a result, the loops and arches caused by the intermingling of the filament yarns 2, 5 and 10 penetrate the yarn composite 13 in the direction of it

₂ g cross-section and therefore cause a somewhat irregular, bulky outer surface of the yarn composite. In contrast, the yarn composite after the heat treatment in the fixing device 16 has an essentially compact outer surface structure. As can also be seen from the course of the method, the

_ ₀ base filament yarns 2.5 of the finished yarn composite have no mutual twist.

2 shows the process sequence of the device for the case in which only a single multifilament _g _ base filament yarn 2 is interwoven with a single adhesive filament yarn 10, with the clamping roller pairs 7,7 '

REPLACEMENT LEAF formed conveyor remains unused. Here too, the process can be carried out with alternative pre-deliveries for the base filament yarn 2 and the adhesive filament yarn 10. For example, the base filament yarn 2 is fed with a relatively small g pre-delivery, which is sufficient just for the mutual opening of its individual filaments in the air texturing device 11, while the adhesive filament yarn 10 is supplied with a pre-delivery sufficient for forming loops and arches of its individual filaments, so that the adhesive filament yarn 0 10 is distributed over the cross section of the base filament yarn 2. Alternatively, however, it can be provided that the base filament yarn 2 and the adhesive filament yarn 10 are supplied with approximately the same relatively high pre-delivery, so that the individual filaments of the base filament yarn 2 as well as the adhesive filament yarn 10 form mutually penetrating and overlapping loops and arches, so that the whole cross section is blown evenly. In this case, in contrast to the illustration in FIG. 2, it can be provided that the base filament yarn 2 and the adhesive filament yarn 10

20 are fed parallel to one another through a single pair of pinch rollers through the air blowing texturing device 11.

As from the procedure explained with reference to FIGS. 1 and 2. there is no twisting of the yarn. However, should this be desirable for any reason, the twisted yarn already glued in the fixing device 16 can, for example, be twisted in a separate process. Alternatively, however, the air-blasting texturing device 11 or the

The yarn leaving the stabilizing device 12 is twisted and then bonded in a separate process by triggering the adhesive effect. Finally, it is also possible to give the yarn a false wire in the same process as it passes through the fixing device 16.

35

According to the description above, this relies on the

REPLACEMENT LEAF The method described above for the device only requires that the adhesive filament yarn (s) 10 have a lower melting point than the base filament yarn (s) 2,5. With regard to the choice of material in detail, for example a copolymer, in particular a copolyamide, is suitable for the adhesive filament yarns. In this case, the melting point of the adhesive filament yarns can be selected between 60 and 160 ° C. The basic filament yarns suitably consist of polyamide or polyester. It is particularly expedient if the base filament yarns have a large number of filaments, because then many loops and arches are formed during the air blast texturing and thus a particularly strong yarn composite is achieved.

REPLACEMENT LEAF

Claims

P ate ri t claims

1. Yarn, in particular sewing thread, with at least one basic thread and at least one hot-melt adhesive thread serving to bond the yarn composite, characterized in that the basic thread formed by a multifilament base filament yarn and the adhesive thread formed by a multifilament adhesive filament yarn are intermingled with one another.

2- Yarn according to claim 1 with at least two

Base filament yarns, characterized in that the individual filaments of the base filament yarns are interlaced with loops and bows.

3. Yarn according to claim 2, in which at least two multifilament base filament yarns are provided, characterized in that the individual filaments of the one base filament yarn serving as the core run approximately parallel and from the loops and arches of the individual filaments formed by the intermingling of the other, basic filament yarns serving as an effect are interspersed.

4. Yarn according to one of claims 1 to 3, characterized in that loops formed by the intermingling - u cE arcs of the or the base filament yarns, seen in the cross section of the yarn composite, are drawn together to a size corresponding to the cross-sectional size of the non-intermingled yarn composite.

5- Yarn according to one of claims 1 to 4, characterized in that the base filament yarns consist of a higher melting point than the adhesive filament yarns having polyamide or polyester.

6. Yarn according to one of claims 1 to 5, characterized in that the base filament yarns and / or adhesive

REPLACEMENT LEAF 1 filament yarns have a large number of filaments.

7. Yarn according to one of claims 1 to 6, characterized in that the adhesive filaments are a copolymer.

5

8. Yarn according to claim 7, characterized in that the

Copolymer is a copolyamide.

9. Yarn according to one of claims 1 to 8, characterized in that the melting point of the adhesive filaments between

. see 60 and 160 ° C.

10. A method for producing a yarn according to one of claims 1 to 9, in which at least one base filament yarn is combined with at least one melt-adhesive adhesive filament yarn to form a yarn composite and are bonded to one another by a heat treatment triggering the adhesive action, characterized in that the multifilament base filament yarn and the multifilament adhesive filament yarn is swirled together by air-blast texturing and then fixed lengths of the swirled yarn composite are each subjected to the heat treatment.

11. The method according to claim 10, characterized in that the base filament yarns and the adhesive filament yarns

Air bubble texturing process with different pre-delivery are supplied.

12. The method according to claim 11, characterized in that the base filament yarn with a low pre-delivery, in which the individual filaments only open to each other and the adhesive filament yarn is supplied with a higher pre-delivery.

13. The method according to claim 12, characterized in that 5 that at least one further base filament yarn is supplied with a higher advance delivery.

ERS _A TZBLATT

14. The method according to claim 11, characterized in that the base filament yarn and the adhesive filament yarn are supplied with approximately the same pre-delivery, in which the individual filamentβ of the base filament yarn and the adhesive filament yarn are swirled evenly among one another.

15. The method according to any one of claims 10 to 14, characterized in that the intermingled yarn composite is stretched before the heat treatment.

16. The method according to any one of claims 10 to 15, characterized in that the yarn composite is cooled after the heat treatment.

17. The method according to any one of claims 10 to 16, characterized in that the yarn composite is rotated ge prior to the heat treatment.

18. The method according to any one of claims 10 to 17, characterized in that the heat-treated yarn composite is rotated. -

19. Apparatus for carrying out the method according to one of claims 10 to 18, characterized by an air-texturing device (11) which can be loaded with at least one multifilament base filament yarn (2,5) and at least one multifilament adhesive filament yarn (10) on the input side ¬ blastexturiervorrichtung (11) downstream Fixiervorrich- _Q tung (16), in which the adhesive effect of a lower Schmelz¬ ilamentgarne point than the foundation-(2,5) having adhesive (10) by a heat treatment, respectively fe¬ edge lengths of from Luftblastexturiervorrichtung (11) feedable yarn composite (13) can be triggered. 5

20. The apparatus according to claim 19, characterized

REPLACEMENT LEAF 1 shows that the air blowing texturing device (11) is connected upstream of a feeder (1) on the input side, by means of which the delivery speed for the individual filament yarns (2, 5, 10) can be selectively adjusted.

5

21. The apparatus according to claim 20, characterized gekennzeich¬ net that the feeder (1) for each to be fed basic filament yarn (2.5) each have two series-connected clamping roller pairs (4,4 ', 7,7'), the conveyor 0 speed selectively is adjustable.

22. The device according to one of claims 19 to 21, characterized in that between the air blast texturing device (11) and the fixing device (16) a g stabilizing device (12) for stretching the air blowing texturing device (11) supplied by the air blasting device Yarn composite (13) is provided.

23. The apparatus according to claim 22, characterized gekennzeich¬ 0 net that the stabilizing device (12) has two spaced apart in the conveying direction pairs of clamping rollers (14,14 '), of which the downstream in the conveying direction arranged pair of clamping rollers (14) has a higher Conveying speed has as the upstream g pinch roller pair (14).

24. Device according to one of claims 19 to 23, characterized in that the fixing device (16) is followed by a cooling device (23) on the output side. 0

25. The apparatus according to claim 24, characterized gekennzeich¬ net that the cooling device (23) is arranged between a pair of input pinch rollers (18) and a pinch roller (21) and a take-up roll (22) having winding device.

REPLACEMENT LEAF