CH656899A5 - METHOD FOR BLENDING YARNS AND DEVICE FOR CARRYING OUT THE METHOD. - Google Patents

Description

The invention relates to a method with the features specified in the preamble of claim 1 and an apparatus for performing this method.

Devices for producing twist-free, holding yarns or for combining several yarns into a coherent single yarn, in which the filaments of the different yarns are mixed together, are known and e.g. in U.S. Patent 3,364,537. The filaments in such yarns can be mixed to varying degrees from "light" to "extensive" depending on the nature of the component yarns, the apparatus structure and the intensity of the blending conditions, which is why these methods are suitable for very different applications, e.g. from combining finer yarns to make coarser yarn, i.e. Doubling, up to 1 combining differently colored or differently dyeable yarns to produce different types of mixed-colored fashion yarns, such as melange and speckle yarns, using bulked or non-bulked yarns.

US Pat. No. 4,069,565 describes a method for producing a textured (bulged) multifilament yarn, which alternately has more compact parts and more open parts distributed over its length; for this purpose, a running bundle of filaments is brought into contact with two curved elements of a device which are located at a longitudinal distance from one another, the thread path undergoing a bend at each point of contact. A filament passage occurs under tension in the entire space between the two elements. At least one fluid stream is directed against the bundle in the passage from one side of the filament bundle in such a way that the individual filaments of the bundle are subject to vibration and an irregular and intermittent crossing in the direction of the flow of the fluid. For effective operation, the thread path must be bent at each point of contact upstream and downstream of the mixing zone. According to US Pat. No. 4,069,565, the position of the fluid flow between the points of contact is also critical and is preferably located in the middle between the points of contact.

US Pat. No. 4,059,873 describes a process for producing a bulk yarn in which a plurality of crimped filament yarns of different colors and / or dyeability are first unraveled practically until the yarn cohesion is released and then introduced into a blending zone from which the combined yarn slows down subtracted as is fed. The fluid flow not only mixes the filaments, but also carries the yarn out of the mixing zone. As shown in US Pat. No. 4,059,873, the yarn is bent practically at right angles to the yarn passage both when entering and leaving the blending zone.

The method according to the present invention is characterized by the features mentioned in the characterizing part of claim 1; preferred embodiments of the method according to the invention have the features mentioned in claims 2-14.

The device according to the invention has the characteristic features specified in claim 15; preferred embodiments of the device according to the invention have the features specified in claims 16-27.

The method according to the invention generally enables the production of cohesive yarns, in particular bulk yarns, with a fluid jet device which does not require the filament or yarn path to be bent when entering or leaving the blending zone; the new method and the device for its implementation offer a better use of energy when combining yarns, in particular for the production of speckled dyeable carpet construction yarns, and an economical process control which can be carried out at higher yarn speeds.

The method according to the invention offers particular advantages with regard to effectiveness and economy if a single jet of compressible fluid, the cross-sectional area of which is smaller than that of the yarn passage, is allowed to impact vertically on the yarn or yarns in the passage, in particular at yarn speeds of over 1370 m / min (1500 yards).

The method offers particular advantages when a number of yarns with little or no cohesion is combined to form a single yarn with greater cohesion and coarser titer, i.e. relocated. A preferred application of such an embodiment is the combination of bulk yarns, which can be dyed relatively differently, for the production of mixed-colored yarns, such as melange or speckle yarns, with practically any degree of blending between very strong and very fine. To produce speckled construction yarns with a high degree of blending, the yarns entering the blending zone preferably have a cohesion or coherence factor of less than 6.0. Edible yarns with greater cohesion lead to less blending and stronger mixed color effects.

In the method according to the invention, the tubular enclosure extends upstream over a distance of 75 mm (3 inches) or more; Particularly good results and more uniform yarns can generally be achieved with an inclusion distance of at least 125 mm (5 inches), in particular of at least 250 mm (10 inches).

To facilitate filament intermingling, the yarn is preferably withdrawn from the intermingling zone at a rate which is 2 to 15% and preferably 5 to 15% less than the rate of advancement of the yarn to that zone; this applies in particular to bulked yarns that tend to disentangle or detangle under tension.

It may be possible to improve the procedure and the appearance of the yarn by using lateral Vibra5

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ions in the treated yarn are also limited or suppressed on the downstream side of the mixing zone by means of tubular enclosures. This additional enclosure is e.g. applicable to edible yarns which are colored and accordingly usually contain less than about 0.3% by weight of yarn finishing agent. A substantially cylindrical shape of the yarn passage is generally preferred.

The longitudinal opening or bore of the device according to the invention preferably has a length of at least 125 mm (5 inches), in particular of at least 250 mm (10 inches). Normally, the ratio of the diameter of the passage to the longitudinal opening of the tube should be at least 1.3: 1.0 and preferably not greater than 4.0: 1.0. The device is particularly effective when the outlet end of the upstream pipe is within a range of 3 to 13 mm (0.125 to 0.50 inches) from the inlet end of the passage.

For bulky yarns of conventional carpet titer, i.e. In the 1100 to 17,000 dtex (1000 to 15,000 den) range, effective tube opening diameters range from 1.5 to 6.4 mm (0.06 to 0.25 inches).

The device can be provided with a guide tube of comparable dimensions and relative spacing dimensions between the exit end of the yarn passage and the pulling means coaxially along the yarn path.

By applying water to the yarn from the blending, the procedure and the blending effect of the process can be improved; Applicators, i.e. Water application devices for such purposes are known as such. Water application should generally be at such a rate that 5 to 25% by weight is obtained on the yarn, but the amount of water is not critical.

The invention is further explained in preferred embodiments with reference to the drawings. Show it:

1 shows the schematic elevation of a preferred device for carrying out the method according to the invention with a tubular yarn guide which is arranged coaxially on the upstream and downstream sides of a fluid jet filament mixing device, and

Fig. 2 shows the schematic elevation of a further preferred embodiment of the device with a tubular yarn guide provided only upstream of the jet device, which is preceded by a tension zone and brake rods for removing filament tangle from the feed yarns.

The device shown in FIG. 1 is shown in an exemplary application for the combination of three bulky, multifilament feed yarns into a single, cohesive, speckled dyed bulk yarn and has a carrier plate 10 on which a yarn guide 12 is fastened. As a result, a water application device 14, a change of direction roller 16 and a means for advancing the yarn in the form of a pair of driven rollers - the roller 18 and the associated entangled roller 20 - are arranged on the plate 10. The upstream pipe guide 30 and the optional downstream pipe guide 36 (openings not shown) are held coaxially aligned by supports 32 and 38, respectively. The cylindrical yarn passage 33 is located in the nozzle body 34. In cross section, the nozzle body 34 shows the passage 33 cut perpendicularly by the smaller fluid line 35. The fluid line 35 is supplied with a compressible fluid under pressure from a source (not shown). The length of the mixing zone created by the action of the fluid jet device is determined by the space between the pipe guides 30 and 36. The means for withdrawing the blended yarn from the blending zone is formed by the idling take-off roller 40. The roller 40 is followed by a roller (not shown) for opening on conical cross-wound bobbins or other appropriate roller and winding arrangement. The position of the roller 40 is held by the carrier 42 such that a straight yarn path from the roller 18 to the roller 40 is defined, which runs coaxially to the tubes 30 and 36 and the passage 33.

As shown in FIG. 1, differently dyeable, multifilable edible yarns 50, 52, 54 are separated packs on a creel (not shown) under the action of the rollers 18, 20 through the guide 12 and water application device 14 and around the roller 16 pulled and then advanced in the converged, abutting state into the upstream end of tube 30 and through body 34 and tube guide 36. The take-off roller 40 draws off the yarns as a mixed, speckled dyeable, cohesive bulk yarn 58.

The device shown in FIG. 2 corresponds to that of FIG. 1 with modifications: the optional downstream pipe guide 36 has been omitted; In addition, a driven tension roller 24 with the associated entangled roller 22 was provided together with parallel brake rods 28 fastened in a base 26 for untangling filaments of the feed yarns prior to being mixed.

The tubular guides stabilize the yarn and apparently allow for more effective blending by the jet in the blending zone. One also obtains a minimization of the formation of single filament loops, which occurs when "unbalanced" filaments are fixed in position by the tangling process. If desired, the entrance to the yarn passage can be narrowed slightly, e.g. by an eccentric yarn gate of the type shown in Figure 2 of U.S. Patent 4,059,873, or by a concentric constriction, such as a smaller diameter hole in a metal plate attached to the entrance to the yarn passage, but such a constriction tends to decrease the effectiveness of the blending zone, resulting in less confusion in the knot areas. If the tangle is more than sufficient anyway, such a constriction can be used to exert a slight nozzle-promoting effect on the yarn as it exits the mixing zone or to form a more uniform, less knotty structure along the yarn.

The feed yarns for the purposes of the invention can be compact or bulk. As the bulked feed yarns, the game is preferably used, which is created by a hot fluid jet bulk process, e.g. of the type described in U.S. Patent No. 3,781,949. Such yarns are superior in bulk and usually somewhat cohesive due to the filament blending, but this blending is usually found anywhere along the yarn in only a portion of the filaments and rarely in all filaments at a given location. For this reason, when two or more of these yarns are combined according to the invention without first removing this mixture, the filament bundles open to a limited extent, so that the filaments of different yarns can mix to a certain extent, but if the resulting yarn is mixed then mixed-dyed, the yarn mainly shows a vigorous mixture of the individual yarn colors with only a slight mixture of the colors.

If you remove this cohesion by setting the tension in the bed and braking the feed yarns before mixing them together, the filaments of the yarns become

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the ability to open and mix more freely and frequently, creating more zones of mixed colors.

The term "bulged" or "bulge ..." as used here refers to yarns with permanently crimped filaments, i.e. Filaments that retain their crimp when removed from the yarn.

The term “differently dyeable” refers to yarns that can be mixed-dyed in a common dyeing liquor to form different colors or shades. The term also includes differently colored yarns, since such yarns remain differently "dyed" by nature when dyeing - even when dyeing with a common dye - i.e. continue to show different colors.

The testing of yarns used for the purposes of the invention for filament blending on the basis of the cohesion or coherence factor is carried out in the known manner by clamping a yarn sample in a vertical position under the action of the tensile stress exerted by a weight the size of which in grams Corresponds to 0.20 times the yarn denier, but is not more than 100 g. A weight-loaded hook is inserted through the bundle of yarn, the total weight in grams of which is numerically equal to the average individual filament denier of the yarn but not more than 10 g, and can be moved downwards at a speed of 1 to 2 cm / s, until the hook weight is carried by the yarn. The parameter for the extent of the filament mixture in the yarn is the distance over which the hook has moved along the yarn until its weight has been borne by the yarn. The result is expressed as the coherence factor, which by definition is equal to 100 divided by the distance traveled in centimeters above. Since the filament mixture is statistically unordered, a sufficient number of samples are tested to arrive at a representative average value for the tested yarn.

In the case of coarsely blended coarse-titer yarns, such as carpet yarns, which are produced according to the invention, a more distinctive measure of the yarn cohesion is available with the test for lateral pulling apart. To carry out this known test, two hooks are introduced at an arbitrarily chosen point in approximately the middle of the yarn bundle sample in order to divide the bundle into two filament groups. The hooks are pulled apart at a speed of 12.7 cm / min (5 inches per minute) at an angle of 90 ° to the gar axis, which is done using a tensile testing machine, such as an Instron machine, which measures resistance to hook separation . Use the hooks to pull the yarn apart until the force applied is 454 g (1 pound). At this point the machine is stopped and the distance between the two hooks is measured as the value to be recorded. 10 determinations are carried out on each yarn and the average is determined as the pull-apart value. The yarn samples for the test should be at least 10 to 15 cm (4 to 6 inches) long and should be taken from the entire yarn package to be tested in a statistically disordered manner.

example 1

This example explains the importance of yarn guides in the method or the device according to the invention in an experiment using bulky feed yarns which already have a moderate amount of filament mixing (yarn cohesion), as is usually presented in nylon bulk filament yarns are intended for commercial use as yarns for direct scenting of carpets. Such yarns usually have a coherence factor in the range of about 25 to 50.

The method and device corresponded to FIG. 1.

The body of the blasting device had a yarn passage 2.540 + 0.00254 cm in length and with a constant diameter of 0.58 ± 0.00254 cm (1,000 or 0.228 + 0.001 inches) that was perpendicular to its center from a cylindrical one Fluid line of 0.32 ± 0.00254 cm was cut. The center line of the fluid line cut the center line of the passage to within 0.00254 cm. The edges of the yarn inlet and outlet ends of the culvert were smoothed by rounding to a radius of 0.76 mm.

The blasting device was made from a metal block made of stainless steel (type 416) 3.81 cm wide, 2.54 cm high and 2.86 cm deep. The passage ran through the block in a vertical direction between the head and bottom ends and in the middle of both ends. The centerline of the passage was 1.27 cm from the front of the block and the fluid line entered from the back of the block. The block body was designed to be screwed to a distributor for feeding the fluid line with compressed air.

Air was fed to the fluid line at a pressure Pu of 150 pounds per square inch gauge, which flowed through the passage at a rate of 1.02 N-m3 / min at ambient temperature.

The conveyor rollers 18, 20 operated in accordance with a delivery of the yarns at 914 m / min, the yarns rotating around the rollers in at least 8 loops in order to ensure a reproducible feed rate. With the water application device 14, water was applied to the yarns at 3.79 l / h. The speed of the take-up roller for a conical package was set according to a yarn advance from the conveyor rollers to the take-up roller of 3%.

For peripheral suppression of lateral vibrations in the yarn on the upstream side of the jet device, a piece of seamless trading tube made of stainless steel 27.9 cm long and 2.13 mm inside diameter was arranged so that it coaxially aligned with the yarn passage and between its exit end and the entrance to the yarn passage there was a space of 0.64 cm. The inlet end of the tube was approximately 13.97 cm from the point at which the feed yarns left the surface of the conveyor roller on their way to the blasting device.

Using this device, trials were carried out with three feed yarns in each of the following ways:

A) Ais feed yarns - 1361 dtex (1225 den) each - nylon commercial filament bulk yarns (DuPont) made in a hot fluid jet screen bulk process. The yarns could be dyed differently; one yarn could be dyed with cationic dye (type 854), another with light dye (type 855) and the third dyeable with acid dye (type 857). The yarns contained a conventional producer spin size within the standard quantities of an average of 0.7% size on the yarn and packing limits in the range of 0.4 to 1.35% size on the yarn.

A single yarn having cohesion was formed from the three yarns under the above conditions. A visual examination of mixed-dyed strands showed a structure with periodic interlacing knot areas (nodal interlace structure) with the presence of a considerable amount of filament intermingling (despite the intermingling that was already present in each of the feed yarns). The yarn

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gave a pull-apart value of about 3.18 cm.

Another yarn was made from the same three feed yarns under the same conditions but with the addition of a tubing that had the same dimensions as above and was placed coaxially aligned downstream of the nozzle body yarn pass, with the distance between the pass exit and the Entrance to the downstream guide tube was 0.64 cm. A visual examination of mixed dyed strands of the resulting yarn and also the coherence values obtained in the pull-apart test showed that the yarn essentially corresponded to the yarn obtained without the downstream tube.

B) Under the same process conditions as in A), three runs of draw-dyed nylon filament yarn (1820T-497) were knitted to form a cohesive single yarn. The yarns had been dyed in the random space dyeing process, giving a beige / brown spotted appearance on the food package wraps. Because of the dyeing, the spin size on the yarn was reduced to about 0.25% by weight. Using the upstream as well as the downstream pipe routing as produced above showed a desired, periodic interlacing structure (interlace structure) along the yarn, from which a pull-apart value of 4.06 cm resulted. Working under the same conditions with the modification that no water was applied to the yarn resulted in a low degree of blending, for which the pull-apart test was not meaningful. In a third experiment, only the upstream pipe guide was used while applying water. The resulting yarn showed an undesirable structure with interwoven knot areas at statistically disordered intervals along the yarn with an average pull-apart value of 5.84 cm. From this it can be concluded that when twisting feed yarns with low yarn size values, such as 0.3%, the best results are obtained with water application and with the use of pipe guides both upstream and downstream of the nozzle device.

Example 2

This example shows the effectiveness of tube guides using the same feed yarns and conditions as in Example 1A, with the modification that first of all the moderate cohesion present in the feed yarns (coherence factor 25 to 50) with the formation of a coherence factor of less than 6.0 Will get removed. For this purpose, the filaments are subjected to a detangling under tension using a device of the type shown in FIG. 2 by means of a series of parallel brake rods. Four steel brake rods with a diameter of 6.35 mm arranged at center distances of approximately 1.27 cm were used. The speed of the tensioning rollers (24, 22) was set according to the formation of a tension on the yarns between the rollers and the conveyor rollers of approximately 1.06 dN / tex (1.2 g / den). The use of these low cohesion feed yarns allows the advance between the conveyor rollers and the take-off roller to be increased to 10%. Mixed-dyed strands of yarn obtained in this way have produced a desired, regular structure with periodic interlacing knot areas, between which sections of heavily mixed threads were present. The pull-apart test gave a value of 2.29 cm.

This procedure was repeated under the same conditions with the modification that no water was applied to the yarn with the water application device. The product was again a heavily mixed, strongly tangled yarn with a pull-apart value of 2.54 cm, but the periodic, heavily tangled areas were less dense than above. Under these conditions, therefore, no water application is required to achieve a good product.

The procedure was repeated (using water) with the modification that the speed of the feed twine was increased to 1828 m / min and the advance rate to 12%. Mixed-dyed strands of yarn produced in this way showed a pronounced difference in the tangle structure in comparison with the yarn obtained at the lower speed. The structure of the yarn produced at a lower speed with its periodic interlacing knot areas was replaced by the character of a statistically disordered mixed filament bundle with a more uniform density along the yarn. Taking into account the high yarn speed and relatively slow air flow in the nozzle (1.02 N-m3 / min), the degree of filament mixing was very good.

From these experiments it can be concluded that standard filament bausch feed yarns containing normal amounts of spinning size (i.e. at least about 0.75%) only require an upstream guide tube for effective work.

Similar results have been obtained in a series of tests using guide tubes with inner diameters of 1.52, 3.05 and 3.86 mm and lengths of 15.24 and 27.94 cm. Differences in color mixing and degree of confusion were small in the entire test series. The space between the end of the guide tube and the yarn passage entrance was always 6.35 mm for all tube sizes. Otherwise the conditions were kept essentially constant.

Example 3

In this example, the first experiment of Example 2 was essentially repeated under the following conditions: the feed yarns were the same and the device again corresponded to the type shown in FIG. 2. The speed of the conveyor roller was 1023 m / min. The feed yarns were untangled at a tension of 1.01 dN / tex (1.14 g / den) to a coherence factor of less than 6.0. The device was provided with a single guide tube 27.94 cm in length and 3.86 mm in inner diameter on the upstream side of the nozzle, its downstream end being at a distance of 6.35 mm from the yarn passage entrance. The nozzle was designed with the modification as in Example 2 that the diameter of the fluid line was 3.96 mm. The fluid line was fed with air at a pressure Pü of 5.17 bar at 25 ° C., which gave a flow rate of 0.64 N-mVmin. A 3-slot applicator was used to apply water at a flow rate of 3.79 l / h. The product yarn take-off speed was controlled to 920 m / min with a package winding roller, resulting in an advance of 11%. The cohesive product yarn was wound into the package at a winding tension of 225 g. These conditions resulted in a product throughput of 25.4 kg / position / h.

Despite the lower air pressure used here compared to Example 2, a dyed knitted fabric from the yarn showed that the yarn was more mixed than a control yarn, under appropriate conditions, but at much higher air pressure and flow rate after the process and apparatus was obtained according to US Pat. No. 4,059,873.

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Example 4

This example explains the effects of the length of the guide tube on the working behavior and the appearance of the yarn under the working conditions of example 3.

There were identical attempts with the modification,

that tubes with lengths of 2.54, 7.62, 12.7 and 27.94 cm as well as a textile thread guide with a length of 0.64 cm were tested and that finally no work was carried out between the conveyor rollers and the thread passage.

The working behavior was best with the 27.94 cm tube. The yarns entering the shorter tubes showed an unstable vibration process, which was particularly noticeable with the 7.62 cm and 12.7 cm tubes.

Mixed dyed strands from the yarns were evaluated for their appearance: It was found that a tube length of at least 7.62 cm was necessary to produce a uniform, well-mixed yarn. With shorter tubes as well as without tube, yarns with less blending and a less even knot distribution were obtained.

Based on both the working behavior and the appearance of the yarn, a tube length of at least 12.7 cm is preferred.

Example 5

This example illustrates the application of the invention for the production of a very high titer speckled yarn for carpets.

The device corresponded to FIG. 2, the feed yarns having been untangled to a coherence factor of less than 6.0 by means of the brake rods. Hot-fluid jet-blown nylon 66 commercial parliamentary yarns of three types were combined into a single yarn, using two yarns of each yarn type (a total of six yarns). The yarn types were a cationically dyeable, medium-blunt 1361-dtex yarn (type 494), an acidic light-dyeable, medium-blunt 1361-dtex yarn (type 495) and an acid-dyeable, medium-blunt 2744-dtex yarn (type 497A). The nozzle body structure corresponded to the above examples with the modification that the passage diameter was 0.79 cm and the air line had a diameter of 0.54 cm. The line was fed with air at a pressure Pu of 6.90 bar at a flow rate of 1.12 N-mVmin. The speed of advancing the yarn was 416 m / min; Water was applied at a flow rate of 7.57 l / h. The upstream single guide tube had a length of 27.94 cm and an inner diameter of 0.39 cm. Its exit end was 0.64 cm from the entrance of the culvert. The yarn take-off speed was controlled to 377 m / min with a conical opening roller, which resulted in an advance of 10% 5. The resulting yarn had a total titer of 11556 dtex and had a structure with periodic interlacing knot areas with a significant amount of filament intermingling between the component yarns. A mixed-dyed carpet made of io yarn showed a direction-independent speckled appearance, with the deeply dyed component yarn predominating.

Example 6

This example shows the application of the invention for duplicating compact (non-bulky) yarns for the purpose of producing a coherent, compact yarn of coarser denier.

Three runs of a drawn, untwisted, roofed nylon 66 yarn of 1111 dtex with 68 20 filaments, which had not been subjected to interlacing and was essentially free of filament entanglement, served as feed yarns. The yarn contained 0.8% of a conventional size.

The device corresponded to Example 3 with the modification that the tension rolls and brake rods were not used, since the feed yarns were essentially free of filament tangle.

Air with a pressure Pü of 6.90 bar and a flow rate of 0.84 N-m3 / min was used as the compressible fluid. The winding tension was 200 g. 30 The yarns obtained had a titer of approximately 3444 dtex.

Tests were carried out with two different leads, each with the single pipe guide upstream of the mixing zone and without the same. Otherwise, the working conditions corresponded to example 3. Results:

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As can be seen from these results, the 45 tubing significantly improves the filament entangling efficiency of the blending zone.

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Claims (27)

656 899 2nd PATENT CLAIMS 1. A method of blending filaments of a multi-filament yarn or multifilament yarns while advancing the yarn or yarns through a zone having an enclosed yarn passage with yarn entrance and exit, and loading the yarn or yarns in the yarn passage with at least one high Speed-bearing jet of compressible fluid to vibrate and mix filaments of the yarn or yarns, preventing lateral filament vibrations in the yarn or yarns upstream of the blending zone, characterized by advancing and withdrawing the yarn or yarns to or from from the zone along a path substantially coaxial with the yarn passage, and by peripheral limitation of lateral vibrations in the yarn or in the yarns immediately upstream of the blending zone through a tubular enclosure extending from the beginning of the zone at a point near the yarn entrance and leads coaxially along the above-mentioned path over a distance of at least 75 mm upstream from the yarn inlet. 2. The method according to claim 1, characterized in that the yarn or yarns in the yarn passage are acted upon with a single jet of compressible fluid in the direction perpendicular to the longitudinal axis of the yarn passage. 3. The method according to claim 1 or 2, characterized in that the yarn passage is fed several yarns. 4. The method according to claim 3, characterized in that one feeds at least two yarns which can be dyed comparatively differently. 5. The method according to claim 3 or 4, characterized in that at least one of the yarns is a colored and bulked yarn. 6. The method according to any one of claims 1 to 5, characterized in that the tubular enclosure leads upstream from the yarn inlet over a distance of at least 125 mm. 7. The method according to claim 6, characterized in that the tubular enclosure leads upstream of the yarn entrance over a distance of at least 250 mm. 8. The method according to any one of claims 1 to 7, characterized in that the yarns, in particular the differently dyeable yarns, are introduced into the yarn passage with a coherence factor of less than 6.0. 9. The method according to any one of claims 1 to 8, characterized in that the yarns are introduced into the yarn passage at a speed of at least 1370 m / min. 10. The method according to any one of claims 1 to 9, characterized in that coherent yarn is withdrawn from the zone at a speed which is 2 to 15% less than the speed at which the yarn is fed to the zone. 11. The method according to any one of claims 1 to 9, characterized in that lateral filament vibrations in the blended yarn downstream of the yarn outlet of the yarn passage through a tubular enclosure from a point near the yarn outlet and are continued peripherally limited over a considerable distance downstream from the yarn outlet. 12. The method according to claim 11, characterized in that the blended yarn is withdrawn from the zone at a speed which is 2 to 15% less than the speed at which the yarn is fed to the zone. 13. The method according to any one of claims 1 to 12, characterized in that a yarn is used as yarn or as at least one of the yarns. 14. The method according to any one of claims 1 to 13, characterized in that the yarn passage between the yarn inlet and the yarn outlet has a substantially cylindrical shape. 15. The apparatus for performing the method according to claim 1 with a fluid jet filament Vermengungskör-per, through which a yarn passage with a yarn inlet and a yarn outlet extends, wherein at least one fluid line leads through the body and into the yarn passage, the axis of which is the longitudinal axis of the passageway, means for delivering compressible fluid under high pressure to the fluid conduit, means for advancing yarn or yarn at a controlled rate to the entrance of the yarn passage, means for withdrawing blended yarn from the yarn exit and one between the means for advancing Yarn and the yarn inlet arranged yarn guide, which defines a straight yarn path between itself and the yarn inlet, which runs coaxially to the yarn passage, characterized in that the yarn guide (30) is essentially formed by a tube, the longitudinal opening of which is practically coaxial with the yarn passage (33) and which is arranged along a straight path between the device (18, 20) for conveying yarn forward and the entrance of the yarn passage (33), the diameter of the longitudinal opening being smaller than that of the yarn passage (33), but sufficiently large for a free one Yarn pass is and lanternal filament vibrations as well as lateral yarn movement in the longitudinal opening are peripherally limited, and wherein the exit of the longitudinal opening is close to the entrance of the passage (33) and the longitudinal opening is of sufficient length to accommodate lateral filament vibrations in the yarn or yarns caused by the fluid jet to prevent upstream of the exit of the longitudinal opening substantially. 16. The apparatus according to claim 15, characterized by a single fluid line (35) which intersects the passage (33) vertically and has a smaller cross-sectional area than the passage (33). 17. The apparatus of claim 15 or 16, characterized in that the longitudinal tube opening has a length of at least 125 mm. 18. The apparatus according to claim 17, characterized in that the longitudinal tube opening has a length of at least 250 mm. 19. Device according to one of claims 15 to 18, characterized in that the ratio of the diameter of the yarn passage (33) to the diameter of the longitudinal tube opening is at least 1.3: 1.0. 20. Device according to one of claims 15 to 19, characterized in that the distance of the outlet of the tube longitudinal opening from the entrance of the yarn passage (33) is 3 to 13 mm. 21. Device according to one of claims 15 to 20, characterized in that the diameter of the longitudinal tube opening is 1.5 to 6.4 mm. 22. Device according to one of claims 15 to 21, characterized in that the device for the forward conveying of yarn or yarns (18, 20) is capable of producing a yarn speed of at least 1370 m / min. 23. Device according to one of claims 15 to 22, characterized in that the device for pulling the yarn is intended for operation at a yarn take-off speed which is 2 to 15% less than the speed for which the device (18, 20) for Feeding the yarn forward is determined. 5 10th 15 20th 25th 30th 35 40 45 50 55 60 65 3rd 656 899 24. Device according to one of claims 15 to 23, characterized in that the yarn conveying device (18, 20), the tube longitudinal opening, the yarn passage (33) and the yarn withdrawal device together define a continuous straight yarn path. 25. Device according to one of claims 15 to 23, characterized in that a second tube (36) for guiding the yarn is arranged between the passage outlet and the yarn take-off device, the second tube (36) also being coaxial to the yarn passage (33) and to the yarn path Has longitudinal opening, the diameter of which is smaller than that of the yarn passage (33), but is sufficient to allow free passage of the bulky, blended yarn and to limit lateral yarn and filament movement peripherally, the yarn entrance of the second tube (36) close to that Output of the passage (33) is arranged. 26. The apparatus according to claim 25, characterized in that the means for pulling the yarn is intended for operation at a yarn take-off speed which is 2 to 15% less than the speed for which the device (18, 20) for feeding the yarn forward determines is. 27. Device according to one of claims 15 to 26, characterized in that the yarn passage (33) has a substantially cylindrical shape.