DK160210B - PROCEDURE AND APPARATUS FOR MIRROR MIRRORS IN ONE OR MORE MULTIFILAM YARN IN A GAS RADIATION MIRROR ZONE - Google Patents

Description

DK 160210 B

The present invention relates to a method and apparatus for wrapping filaments in at least one multifilament yarn, whereby a plurality of yarns can be joined to produce a larger continuous yarn. The apparatus 5 and method utilize a tubular guide means which guides the yarn into a gas jet device in which the filaments are swirled together.

Gas jet devices for filament swirling have been used for a long time to produce twistless, coherent yarns and also for combining a large number of single coherent yarns with the filaments of the various yarns swirled together, cf. eg. U.S. Patent No. 3,364,537. The filaments in such yarns can be whirled together to varying degrees from a light coil to an extensive coil, depending on the nature of the component yarns, the design of the apparatus, and the rigorous coil conditions used. The processes are therefore suitable for many different applications from joining smaller yarns to larger yarns, ie.

20, for joining different colored or differently colored yarns to produce various types of mixed color fashion yarns, such as combs and milled yarns, with either bulk yarns or non-bulk yarns.

US Patent No. 4,069,565 discloses such an apparatus and method for producing textured (bulk) yarns with many filaments in which compact and open portions are distributed alternately in length of the yarn. The method involves contacting a forward moving filament bundle with two curved portions spaced longitudinally apart from each other and with the wire direction deflected at each contact point. The filaments pass forward under tension throughout the gap between the two curved parts. At least one gas stream is then discharged to the filament bundle in the above web from one side of the bundle, so that the individual filaments in the bundle are vibrated and crossed at random intervals. through in the direction of it

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2! outflow gas flow. To make the method effective, the wire direction must be deflected at each contact point both before and after the collapse zone. The position of the gas flow between the contact points is also described as being critical, preferably at the midpoint between them.

U.S. Patent No. 4,059,873 discloses a method of producing rich, continuous, floured filament yarn in which a large number of rippled, continuous filament yarns of different color and / or color receptivity, the filaments of which have been investigated to such an extent as far as possible to remove the yarn coherence, is directed to a swirling zone from which the combined yarn is removed at a rate less than the feed rate to the zone. The gas stream not only coils the filaments, but also carries the resulting yarn away from the coiling zone. It has been shown that the yarn deflects at practically right angles to the vapor passage, both when it enters and when it leaves the swirling zone.

The present invention has for its object to provide a method (and apparatus) for producing a coherent yarn, in particular a bulk yarn, by means of a gas jet device which superficially deflects the web of the yarn as it enters or leaving the collapse zone.

The present invention further aims to provide a more energy efficient method for combining yarns, in particular for the production of full-bodied, dyed, colorful carpet yarns and an economical process that can be carried out at higher yarn rates.

In FIG. 1 is a schematic side view of a device according to the invention with a tubular yarn guide member arranged coaxially both before and after a gas jet device for coiling the filaments.

In FIG. 2 is a schematic side view of a preferred apparatus according to the invention, in which a tubular yarn guide means is placed only before the beam device, and in front of which is a tension zone and needles with which

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3 which is tightened to remove filament entanglement from the food yarn.

According to the present invention, there is provided a method of coiling filaments into at least one multifilament yarn, wherein at least one multi-filament yarn in a substantially rectilinear web is advanced through a tubular yarn guide means adapted to prevent lateral filament vibrations, a gas jet coiling zone having a closed, preferably cylindrical, yarn passage coaxial with the yarn guide tube and located between a yarn entrance and a yarn outlet, the yarn or yarns in the yarn passage being hit by at least one jet of high compressible gas so that its filaments vibrate and blend, and thereafter it is moved away from the zone along a path substantially coaxial with the passage, characterized in that the yarn guide tube is at least 7.62 cm in length and disposed in distance from the yarn passage entrance.

The present method is particularly effective and economical when a single jet of a compressible gas and with a cross-sectional area smaller than the cross-sectional area of the yarn passage is caused to collide with the yarn or yarns in the passage perpendicular thereto, and especially at yarn velocities above about 100 psi. 1371 meters / min.

The method is particularly effective and useful for combining a large number of non-coherent or less coherent yarns into a single more coherent yarn with larger deniers, ie. duplication. A preferred use of such a process is for combining bulk yarns which differ in colorability relative to each other, for producing mixed color yarns, such as combs or milled yarns, of almost any degree from very powerful to very fine. In the preparation of rich, high-grade blended yarns, it is preferred that the yarns entering the mixing zone have a coherence factor of less than 6.0 m (1).

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coherence results in less mixing and stronger effects of the mixed colors.

The process is carried out satisfactorily when the tubular yarn guide member before the swirling zone has a length of 7.62 cm or more. More satisfactory results and more uniform yarns of at least 12.7 cm in length can be obtained, and in particular, an even better appearance of the yarn is obtained when the tubular yarn guide member has a length of at least 25.4 cm.

In order to facilitate filament coalescence, it is preferred that the yarn be pulled from the zone at a rate of from 2 to 15% less than the rate at which it advances towards the zone, preferably from 5 to 15% when bulk yarn is fed directly from the zone. a zone in which the filament filament of the feed yarn is investigated by tightening.

The performance of the method and the appearance of the yarn are also improved by peripherally suppressing lateral vibrations in the treated yarn as it is pulled away from the swirling zone (i.e., by a tubular yarn guide member after the zone corresponding to the member before the zone). This additional means may e.g. is used on food yarns that are colored and therefore contain less than approx. 0.3 wt% yarn finishing agent.

According to the present invention, there is also provided an apparatus for coiling filaments in at least one continuous multifilament yarn, which apparatus comprises a yarn guide member, a gas jet coiling zone having a closed yarn passage, preferably cylindrical in shape, through the zone of a yarn entry end. and a yarn exit end, at least one gas channel leading to the passage through the zone having an axis intersecting the longitudinal axis of the passage, means for supplying high pressure compressible gas to the channel, means for feeding the yarn or the yarns at a controlled rate to the passage. entrance, 35 means for removing the blended yarn (s) from the yarn exit end where the yarn control means is positioned

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5 between the yarn feeder means and the yarn entrance end of the passageway and provides the yarn or yarns a straight path between the guide member and the yarn entrance end, which web is coaxial with the passageway, which apparatus is peculiar in that the guide member consists of a tube with a longitudinal bore coaxially directed. after the yarn passage and disposed along a straight yarn path between the yarn feeders and the yarn entrance end, which bore has a diameter substantially smaller than the diameter of the passage but large enough to allow free passage of the yarn or yarns through the bore having an exit end disposed near at, but at a distance from the entrance end to the passage and a length of at least 7.62 cm.

The control means has a length of at least 7.62 cm, preferably at least 12.7 cm, especially at least 25.4 cm, according to the method of the present invention.

Normally, the ratio of the diameter of the passage to the bore should be at least approx. 1.3: 1.0, preferably it should not be greater than approx. 4.0: 1.0. The apparatus is particularly effective when the outlet end of the countercurrent tube is disposed at a distance from the input end of the passage in the range of from ca. 0.32 to 1.27 cm.

For bulk yarns with ordinary rugs, ie.

1,000 to 15,000 deniers, the effective bore diameters of the control means range from about 10 1.52 to 6.35 mm.

The apparatus may include a guide tube of similar dimensions and relative distance disposed between the outlet end of the yarn passage and the means which pull the yarn coaxially along the yarn web.

30 Applying water to the yarn prior to blending improves the feasibility and swirling efficiency of the process. Water supply devices are known. The water should be supplied at a rate to obtain from approx. 5 to approx. 25% by weight of the yarn, but the amount is not 35 critical.

With respect to the figures. 1 more 6

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in detail, an apparatus according to the invention used to combine three full multifilament yarns into a single coherent, full, floured, dyed yarn. The apparatus comprises a mounting plate 10 on which is provided a yarn guide mechanism 12 followed by a water supplying device 14, a direction change roller 16, means for feeding yarns consisting of a pair of driven rollers, namely a roller 18 and an associated, inclined roller 20. For example, a tubular yarn guide member 30 and, optionally, a corresponding guide member 36 (the bores thereof are not shown) are arranged coaxially by supports 32 and 38 with a cylindrical yarn passage 33 in a gas jet swirling zone 34. Zone 34 is shown in cross-section to expose the passage. 33, in which perpendicularly a smaller gas duct 35 opens. The gas duct 35 is passed through a compressible gas under pressure from a source (not shown). The distance between the controls 30 and 36 determines the length of the swirling zone produced by the action of the gas jet device. Means for pulling off the tangled yarn from zone 34 consists of a 20 pull-down roller 40. Roll 40 is followed by a taper roller (not shown) or other suitable roller and a winding arrangement. The roller 40 is held in place by a support 42 so that from the roller 18 to the roller 40 a rectilinear yarn web is obtained which is coaxial with the members 30, 36 25 and with the passage 33.

As shown in FIG. 1, variously colorful, multifilament feed yarns 50, 52 and 54 are pulled from separate packages, held on a coil rack (not shown), by the rollers 18 and 20 through the guide mechanism 12 and the water supply device 14, around the roll 16 and then passed in converged, continuous state into the input end of member 30, through zone 34 and guide member 36. They are removed therefrom by means of peel roller 40 as a mixed, milled, colorable, coherent bulk yarn 58.

The apparatus illustrated in FIG. 2 is the same as shown in FIG. 1, but modified by omitting it

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7, tubular yarn guide means 36 and by insertion of a driven tensioning roller 24 and an associated inclined roller 22 together with parallel tensioning pins 28 arranged on a plate 26 which needles to expel the filament of the food body 5 before swirling together.

The tubular guide members stabilize the yarn and thus apparently allow a more efficient tangling by means of the jet in the swirling zone. The formation of single filament loops that occur when 10 filaments that are not in place are locked in place by the coalescence effect is also diminished. If desired, the entrance to the yarn passage 33 may be narrowed slightly, e.g. either by an eccentric yarn of the type shown in FIG. 2 of U.S. Patent No. 4,059,873 or by a concentric constriction such as a hole with a smaller diamond in a metal plate positioned against the entrance to the yarn passage. However, such constrictions tend to reduce the efficiency of the collapse zone, resulting in less entanglement in the node regions. In cases where the entanglement is more than sufficient, such a narrowing can be used to provide a small beam feeding effect on the yarn as it emerges from the tangling zone or to provide a more uniform yarn with less knot structure.

The weft yarns for use in the method of the invention may be compact or full. Bulk feed yarns are preferably those which are made full by a hot gas jet bulking process, e.g. of the type disclosed in U.S. Patent No. 3,781,949. Such yarns have an excessively high density and usually have some coherence due to the interweaving of the filaments. This coalescence is usually found only among a portion of the filaments at any location along the yarn and rarely among all filaments at a given location. When two or more of these yarns are joined by the method of the invention without first removing this blend, filament 8

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the bundles therefore, to a certain extent, so that the filaments from different yarns can be swirled together to some extent.

However, if the resulting yarn is then cross-stained, the yarn will mostly appear as a clear blend of the 5 individual yarn colors with little mix of the colors. When this coherence is removed, by feeding the tension yarns before mixing, tensioning and tightening, the filaments in the yarns can then open and swirl together more freely and frequently to produce several zones of mixed colors.

The term "bulk" used in the specification refers to yarns with permanently rippled filaments, i.e. that the filaments retain their ripple when removed from the yarn.

The term "different colorable" refers to yarns that can be cross-dyed in a common dye bath in different colors or shades of color. The term also includes differently colored yarns, since such yarns, when dyed, even with a common dye, will naturally remain differently "colored", ie. get different color.

The coherence factor testing of filament coil in a yarn used herein is determined in known manner by clamping a yarn sample vertically under tension produced in grams of a weight of 0.20 times the yarn but not greater than 100 grams. A weighted hook having a total weight of 25 grams in numerical equals the average denier per filament in the yarn, but weighing no more than 10 grams, is inserted through the yarn bundle and lowered at a rate of 1 to 2 cm / sec until the weight of the hook is supported by the yarn.

The distance the hook has moved along the yarn until the weight is supported characterizes the degree of filamentous tangling in the yarn. The result is expressed as a "coherence factor", which is defined as 100 divided by the distance traveled above in centimeters. Since filamentous coalescence is not random, a sufficiently large number of samples are tested to define a representative average value for the sample yarn.

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9

For high denier yarns, which are more coiled, such as carpet yarns made by the method of the invention, the lateral pull-apart test provides more fine-grained targets for the yarn coherence. In this known test, two hooks are placed at a randomly selected point approximately at the center of the yarn bundle to be tested to separate it into two groups of filaments. The hooks are pulled apart at a speed of 12.7 cm per second. per minute at a 90 ° angle to the yarn axis 10 by means of a tensile tester which measures the resistance at the separation of the hooks, such as an "Instron" machine. Pull the yarn with the hooks until a force of 454 g is applied, at which time the machine is stopped and the distance between the two hooks is measured and recorded. 15 ten determinations are made for each yarn and the average is called the separation value. The length of the sample yarn sample should be at least 10-15 cm and randomly selected from the entire yarn package to be tested.

Example 1

This example demonstrates the importance of tubular controllers in the apparatus and in the method of the invention using full feed yarn already having a moderate amount of filament coalescence (yarn coherence) 25 commonly found in full continuous filament nylon yarns for commercial use as carpet yarn with direct yarn . Such yarns generally have a coherence factor in the range of from ca. 25 to approx. 50th

The apparatus and method correspond to the description 30 of FIG. First

The jet device has a yarn passage 33 which is 2,540 ± 0.00254 cm long with a constant diameter of 0.58 ± 0.00254 cm, and in the center of which perpendicularly opens a cylindrical gas channel with a diameter of 0.32 ± 0.00254 cm.

35 The centerline of the channel opens within approx. 0.00254 cm from the centerline of the passage. The edges of the passage's yarn entrance

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10 and yarn exit ends are smoothed by rounding to a radius of 0.76 mm.

The beam device is made from a type 416 stainless steel block which is 3.81 cm wide and 2.54 cm high and with a depth of 2.86 cm. The passage runs through the block perpendicular from top to bottom and is centered between each of the sides of the block. The center line of the passage is located 1.27 cm 'from the front of the block and the channel enters from the back of the block. The device is designed to be bolted to a manifold for supplying pressurized air to the duct.

The duct is supplied with air at 10.5 kg / cm2, which flows through it at a rate of 1.02 m3 / min. at ambient temperature.

The feed rollers 18 and 20 feed the yarn at 15 914 meters / min. The yarns are wound at least eight times around the rollers to ensure a uniform feed rate. Water is supplied through the water supply device 14 to the yarns at 3.79 liters / hour. The speed of the tapered pull roller is set to provide a 3% yarn overfill from the forward rollers.

A commercial, seamless, stainless steel tube with an internal diameter of 2.13 mm and a length of 27.9 cm for peripheral suppression of lateral vibrations in the yarn before the coiling zone is placed coaxially with the yarn passage and at a free distance between its exit end and the entrance to the the yarn passage of 0.64 cm. The entrance end of the tube is approx. 13.97 cm from the place where the feed yarn leaves the feed roller surface on the road to the beam device.

Runs are performed using this apparatus with three feed yarns for each of the following points.

(A) The food gamers are each 1225 denier. The yarns are commercial (Du Pont), rich, continuous nylon filament yarns made by the hot gas jet sieve bulking method. The yarns can be dyed differently - one can be dyed cationically (type 854), one is brightly acid dyed (type 855) and one is dark acid dyed (type 857). The yarns inside-

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Figure 11 maintains a generally available spinning post-finishing agent within the standard of 0.7%, on average, of yarn finishing and packing limits ranging from 0.4 to 1.35% finishing of yarn.

5 The three yarns are processed into a single coherent yarn under the above conditions. A visual examination of cross-colored dolls shows a periodic knot joint structure with a considerable amount of filamentous interweaving (despite the interweaving already present in all the food yarns). The yarn gives a separation value of approx. 3.18 cm.

A second yarn is made from the same three feed yarns under the same conditions, but with the insertion of a tubular guide member of the same dimensions as above 15 and coaxially disposed after the yarn passage with a 0.64 cm free distance between the passage outlet and the guide tube entrance.

A visual examination of the cross-colored dolls of the resulting yarn and the separation coherence values show that the yarn is practically the same as that produced without guide tubes.

(B) The same process conditions as in (A) are used and three ends of the spacer-colored 1820T-497 full-length continuous filament nylon yarn are entangled to make a single coherent yarn. The yarns are randomly spaced, giving the wrapped food yarns a variegated beige / brown appearance.

Due to the dyeing, the spinning finishing agent applied to the yarn has been reduced to approx. 0.25% by weight. Yarns made using pipe guide means both before and after the swirling zone as above exhibit a desirable periodic interlocking structure distributed regularly on the yarn, resulting in a separation value of 4.06 cm. Under the same conditions, except that no water is added to the yarn, little tangling is noted and it is meaningless to subject it to a separation test. A third test is performed using only the guide tube before the radiation zone and i

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12 in with water supply. The resulting yarn exhibits a less desirable knot joint structure randomly spread over the yarn with an average separation value of 5.84 cm. From this it is concluded that the best results 5 are obtained for entanglement of food yarns with low amounts of yarn finishing agent, such as 0.3%, using water and tubular guides both before and after the swirling zone.

Example 2

This example demonstrates the efficiency of the guide tubes using the same feed yam and the same conditions as in Example 1A, except that the moderate coherence of the feed yams (cf 25-50) is first removed from every 15 yarns, giving a coherence factor of less than 6.0.

This is accomplished by tearing the filaments under tension by means of a series of parallel tensioning pins using an apparatus as described in FIG. 2. Four 6.35 mm diameter steel tightening pins are used. The needles 20 are disposed at a distance of approx. 1.27 cm between their centers. The speed of the tightening rollers (24 and 22) is adjusted so as to provide a tightening of the yarns between them and the feed rollers of approx. 1.2 g / d. By using these low-coherent feed yarns, the feed rate can be increased to 25% between the feed rollers and the peel roll. Cross-dyed dolls of yarn made in this way exhibit a desirable regular periodic interlock knot structure separated by sections of heavily mixed filaments. A separation test gives a value of 2.29 cm.

The process is repeated under the same conditions except that no yarn water is supplied via the water supply device. The product is again strongly mixed, strongly entangled yarn with a separation value of 2.54 cm, but the periodic, strongly entangled areas 35 are less dense than before. Under these conditions, therefore, it is not necessary to add water to obtain a good

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13 product.

The process (using water) is repeated except that the feed yarn speed is increased to 1,828 meters / min and the feed rate is increased to 12%. Cross-colored yarn dolls 5 made in this way show a marked difference in entanglement structure as compared to the yarn made at a lower speed. The periodic knot jointing structure of the yarn, produced at the lower speed, is replaced by a structure of randomly mixed filament bundles of more uniform density along the yarn. The filament blend level is very good for the yarn, given the high velocity and relatively low air flow in the jet (1.02 m3 / min).

From these tests, it is concluded that conventional 15 commercially-packed continuous filament feed yarns containing normal amounts of spin finishing agent (i.e., at least about 0.75%) require only one guide tube before the gas jet to achieve efficient operation.

Similar results are obtained in a series of tests, using guide tubes having an internal diameter of 1.52 mm, 3.05 mm and 3.86 mm in lengths of 15.24 and 27.94 cm.

This series of tests shows only a slight difference in color mixing and entanglement level. For each tube size, a free distance of 6.35 mm is maintained between the end of the guide tube 25 and the entrance to the yarn passage. Moreover, the conditions used are practically constant.

Example 3

This example is practically a repeat of the first run of Example 2 under the following conditions. The feed yarns are the same and the apparatus is again the one in fig. 2. The speed of the feed roller is 1023 m / min. The feed yarns are investigated to a coherence factor of less than 6.0 under a voltage of 1.14 g / d. A single 35 guide tube is used before the gas jet with a length of 27.94 cm and with an internal diameter of 3.86 mm. The outlet end of the tube is disposed

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14 I

in

at a distance of 6.35 mm from the yarn passage entrance. Radiation I

the member is of the same construction as in Example 2 except that the diameter of the liquid channel is 3.96 mm. The liquid duct is supplied with air at a pressure of 5.27 kg / cm 3 at 25 ° C, which gives a flow rate of 0.64 m3 / min. A 3-column water supply device with a flow rate of 3.79 liters / hour is used. With the help of a tapered roller, the pull-off speed is adjusted to 920 meters / min, giving an 11% overfeeding. The coherent yarn product is wound up to one unit under a winding tension of 225 g. With these conditions a product quantity of 25.4 kg / position / hour is obtained.

Despite the lower air pressure used in this method relative to Example 2, colored, knitted fabric of the yarn shows that it is more blended than a control range made under similar conditions, but at a much higher air pressure and current in use. of the method and apparatus of U.S. Pat.

4059873.

20

Example 4

This example demonstrates the effects of the guide tube length on operation and the appearance of the yarn under the method conditions described in Example 3.

25 Identical runs are performed except that pipes are tested in lengths of 2.54 cm, 7.62 cm, 12.7 cm and 27.94 cm as well as a 0.64 cm long textile yarn control mechanism, and in addition without any guide member at all between the feed rollers and the yarn passage.

30 The best operating performance is achieved with the 27.94 cm long pipe. Yarns entering the shorter tubes exhibit an unstable vibration effect, which is particularly noticeable at the tubes with lengths of 7.62 cm and 12.7 cm.

Cross-colored yarn dolls are judged by their appearance.

35 It is seen that a pipe length of at least 7.62 cm is required to obtain a uniform, well-wound yarn. Application

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15 of shorter pipes and no pipes at all provide yarns with less tangling and a less uniform distribution of knots.

Based on the performance and the appearance of the yarn, it is concluded that the preferred pipe length should be at least 12.7 cm.

5

Example 5

This example demonstrates the use of the method of the invention for the production of very high denier yarn for carpets.

10 The apparatus used is shown in FIG. 2, where tightening pins are used to determine the feed yarn to a coherence factor of less than 6.0. A combination of three types of commercial full-length continuous filament - 66 nylon yarns, made by hot liquid jet, is made into a single single yarn, using two ends of each yarn type (a total of six yarns). The types used are a cationic 1225 denier (type 494), semi-matte yarn, a 1225 denier bright acid dye (type 495), semi-matte yarn and a 2470 denier dark acid dye (type 497A), semi-matte yarn. The structure of the jet device 20 is as in the previous examples except that the diameter of the passage is 0.79 cm and the air duct has a diameter of 0.54 cm. The duct is supplied with air at 7 kg / cm 2 at a flow rate of 1.12 m3 / min. The feed rate is 416 meters / min and the water is supplied at a flow rate of 7.57 liters / hour. The individual guide tube before the passage is 27.94 cm long with an inner diameter of 0.39 cm.

Its exit end is located at a distance of 0.64 cm from the passage entrance. The speed at which the yarn is pulled off is adjusted by means of a tapered roller to 377 meters / min, 30 thereby obtaining a 10% overfeeding. The resulting yarn has a total denier of 10400 and a periodic knot joint structure with a considerable amount of filament coalescence among the component yarns. A cross-colored rug made from the yarn has a non-directional, mottled appearance, with the dark colored component yarn dominating.

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16 j

Example 6

This example demonstrates the use of the method of the invention for doubling compact (non-full) yarns to form a coherent compact yarn 5 with larger denier. j The yarn consists of three ends of a stretched 1000 denier 68 filament-O-twisted, flat 66 nylon yarn which is not! tangled and practically without filament entanglement. The yarn contains 0.8% of ordinary yarn finishing agent.

The apparatus used is the same as used in Example 3 except that the tension rollers and the tensioning needles are not used since the feed yarns are already practically without filament entanglement.

The compressible liquid is air at 7 kg / cm 2 and the speed is 0.84 m 3 / min. A winding tension of 200 g is used and the resulting yarns have a denier of approx.

3100th

Runs with two different feedings are performed, each with and without a single guide tube prior to the swirling zone. The process conditions are otherwise the same as in Example 3. The following results are obtained:

With tube Without tube 25% Overfeeding 2.1 7.6 2.1 7.2

Separation, cm 3.56 3.12 5.92 7.16

It is clear from these results that the guide tube substantially improves the efficiency of filament entanglement in the swirling zone.

Claims (17)

A method of coiling filaments into at least one multifilament yarn, wherein at least one multi-filament yarn in a substantially rectilinear web is fed through a tubular yarn guide means (30) adapted to prevent lateral filament vibrations, a gas jet swirling zone (34) having a closed, preferably cylindrical yarn passage (33) coaxial with the yarn guide tube (30) and located between a yarn entrance and a yarn outlet, the yarn or yarns in the yarn passage being hit by at least one beam of a compressible high-velocity gas so that its filaments vibrate and mix, then it is removed from the zone along a path substantially coaxial with the passage, characterized in that the yarn guide tube has a length of at least 7.62 cm and is disposed at a distance from the yarn passage entrance. Method according to claim 1, characterized in that the yarn is hit by a single jet of a compressible gas from a direction perpendicular to the longitudinal axis of the passage. Method according to claim 2, characterized in that a large number of yarns are introduced into the passage. Method according to claim 3, characterized in that at least 2 of the yarns are different in color to one another. Method according to claim 3, characterized in that at least one yarn is spacer colored and is a bulk yarn. Method according to claim 1, 2, 3 or 4, characterized in that the yarns are introduced into the passage at a speed of at least 1371 meters / min. Method according to claim 2, 3 or 4, characterized in that the blended yarn passes from the yarn outlet of a passage a tubular yarn guide member 35 which is arranged close to, but spaced from the outlet and continues coaxially with the yarn passage over a considerable stretch. DK 160210B Method according to claim 7, characterized in that the blended yarn is pulled from the zone at a rate which is from 2 to 15% less than the speed at which it is advanced to the zone. Apparatus for tangling filaments in at least one continuous multifilament yarn, comprising an yarn guide member (30), a gas jet tangling zone (34) having a closed yarn passageway (33), preferably of cylindrical shape, through the zone (34) having a yarn entry end and a yarn exit end, at least one gas duct (35) leading to the passage (33) through the zone (34) with an axis intersecting the longitudinal axis of the passage, means for supplying compressible gas under high pressure to the duct (35) means (I) (18, 20) for advancing the yarn or yarns at a controlled rate to the entrance of the passage, means (40) for removing the interlaced yarn (s) from the yarn exit end, wherein the yarn control means (30) is disposed between the yarn feed means (18,20) and the yarn entrance end of the passage (33) and provides the yarn or yarns a straight path 20 between the guide member and the yarn entrance end, which web is coaxial with the passage (33), one in that the guide means (30) consists of a tube with a longitudinal bore coaxially aligned with the yarn passage (33) and disposed along a straight yarn path between the yarn feeders (18,20) and the yarn entrance end, which bore diameter which is substantially smaller than the diameter of the passage but large enough to allow free passage of the yarn or yarns through the bore having an exit end disposed proximate but at a distance from the entrance end to the passage (33) 30 and a length of at least 7.62 cm. Apparatus according to claim 9, characterized in that it has a single gas duct (35) which intersects the passage (33) perpendicular thereto and which has a cross-sectional area substantially smaller than the cross-sectional area of the passage. Apparatus according to claim 10, characterized in that the ratio of the diameter of the passage to the diameter of the bore DK 160210 B is at least approx. 1.3: 1.0. Apparatus according to claim 11, characterized in that the outlet end of the yarn guide tube (30) is arranged at a distance from the entrance end of the passage between 0.32 and 5.27 cm. Apparatus according to claim 11, characterized in that the diameter of the bore is between 1.52 and 6.35 mm. Apparatus according to claim 9, characterized in that the means (18, 20) for feeding the yarn are arranged to be capable of being operated at a feed rate of at least 1371 meters / min. Apparatus according to claims 9 and 10, characterized in that the means (40) for pulling the yarn (or yarns) are arranged to be able to operate at a speed 15 which is from 2 to 15% less than the speed of the feeding means (18). , 20). Apparatus according to claim 9, characterized in that it includes a second tube (36) for guiding the yarn arranged along the yarn path between the outlet end 20 of the passage and of the pulling means, which second tube also has a bore which is coaxial with the passage and with the yarn web. and has a diameter smaller than the diameter of the passage, but sufficient to allow free passage of the full blended yarn, and having a yarn entrance end disposed near 25, but at a distance from the yarn passage of the yarn passage. Apparatus according to claim 17, characterized in that the extraction means (40) are operated at a speed of from 2 to 15% less than the speed of the feeding means (18,20).