DE3140069A1 - METHOD FOR MIXING MULTIFILAMENT YARN FILAMENTS AND DEVICE FOR IMPLEMENTING IT - Google Patents

Description

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The invention relates to a method and a device using a fluid jet device for interlocking or mixing of filaments in a filament yarn or in filament yarns, including the union of a Number of yarns to form a coarser, cohesive one Yarn, in particular using a tubular guide for introducing yarn into a fluid tr ahl -FiI agglomeration facility '.

Fluid jet filament blending devices have long been used to produce more twist free, / cohesive Yarns and also to combine a number of yarns into a single cohesive yarn in which the filaments of the different yarns are mixed together, have been used (see, for example, US Pat. No. 3,364,537). the Filaments in such yarns can depend on the nature of the component yarns and the structure of the equipment and the strength of the blending conditions can be blended to varying degrees from light to extensive. Accordingly, there is a wide variety of processes of applications from combining finer yarns into a coarser yarn, i.e., doubling, to combining differently dyed or differently dyable yarns for the production of different types of mixed-colored, fashionable yarns such as melange and mottled yarns

Use of bulked or non-bulked yarns.

To such a device and such a method ' for the production of a textured (puffed), multifilament Yarn, which has compact parts and open parts distributed alternately over its length, is the US-PS 4 069 565 directed »According to this procedure, a running filament bundle with two curved, im Organs located longitudinally apart in

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Touch, with the grain at each point of contact experiences a bend. In the entire space between the a continuous filament passage under tension is formed in both organs. Then from one side of the Bundle ago at least one fluid flow is discharged against the bundle in the passage that individual filaments of the bundle of vibration and random and intermittent crossing in the direction of the flow of the discharged Fluids are subject. To work effectively, the grain must run at every point of contact both upstream and downstream of the blending zone be turned. As stated in the patent, the position of the fluid flow between the points of contact is also critical, preferably at the midpoint between the points of contact.

U.S. Patent 4,059,873 describes a method of making a bulk speckled filament yarn in which a number crimped filament yarns that differ in their color and / or their dye absorption capacity and in which the filaments have been disentangled for the purpose of substantially removing yarn cohesion, the Is subjected to the action of a mixing zone from which the combined yarn is withdrawn more slowly than it is introduced into the zone. The fluid flow mixes not only the filaments, but also the resulting yarn from the blending zone. As in the patent specification shown, the yarn is both entering and exiting the blending zone bent at essentially right angles to the yarn passage.

The present invention provides a method of making a cohesive yarn, in particular a bulk yarn, with a fluid jet device that does not allow the yarn path to turn when entering requires the mixing zone or leaving it, as well as a device for its implementation

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Disposal. To further advantages and purposes of the invention include a more energy efficient process of uniting of urine, in particular for the production of a carpet bulk yarn that can be dyed with speckles, and a economic process that works at higher yarn speeds is feasible.

In the drawings, FIG. 1 shows

schematically in elevation a device according to the invention with a tubular yarn guide, the coaxially upstream and also downstream of a fluid jet filament mixing device is arranged, and Fig. 2 is a schematic elevation of a preferred device according to the invention with only one of the upstream Jet device provided, tubular yarn guide, which has a tensile stress zone and brake rods for removal upstream of filament entanglement from the edible yarn.

The method according to the invention for interlocking or Intermingling filaments of a multifilament yarn or yarns to form a more cohesive one Yarn from the same with advancing the yarn or yarns through a fluid jet filament blending zone, which have an enclosed yarn passage with a yarn inlet and a yarn outlet, the yarn passage therebetween preferably having a substantially cylindrical shape, and impinging at least one high velocity jet of compressible fluid onto the Yarn or the yarns in the passage to vibrate and mingle filaments thereof during lateral filament vibrations in the yarn or the Prevents yarns upstream of the blending zone

* "*, and then peeling off the more cohesive yarn out of the zone is characterized in that the yarn or yarns are fed to and withdrawn from the zone along a path which is essentially

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RH 33OO -ΙΟΙ is coaxial with the passage, and lateral filament vibrations in the urine or the yarns immediately upstream of the zone by tubular enclosing peripherally restricts or suppresses that extends from the beginning of the zone to a point near the yarn entrance and continues upstream along the path coaxially for a distance of at least 3 inches (7.6.2 cm).

The invention proves to be particularly effective and economical when looking at the yarn or yarns in the passage a single jet of compressible fluid, the cross-sectional area of which is smaller than that of the yarn passage, can bounce vertically, especially at yarn speeds of over about 1500 yards / min (1371 m / min).

The method shows particular effectiveness and utility when dealing with a number of unrelated Yarns or less cohesive yarns into a single yarn of greater cohesion and from coarser titer combined, d. H. doubled. A preferred application of such a process is union of bulk yarns that differ in relation to each other are dyed, practical for the production of mixed-colored yarns, such as melange or speckled yarns any degree between very vigorous and very fine. For the production of bulky speckled yarns 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 a stronger cohesion lead to less mixing? other stronger mixed color effects.

The procedure is when working with a tubular. Enclosure upstream of the mixing zone a distance of 3 inches or more is satisfactorily feasible and advantageous. Even more satisfactory Results and more even yarns can be achieved with

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• a circumference of at least 12.7 cm (5 inches). An even better feasibility and an even better appearance of the yarn are with one Continuation of the tubular Ilm closure upstream

C of the blending zone over a distance of at least 25.4 cm (10 inches).

To facilitate filament blending, the yarn is preferably withdrawn from the zone at a rate 2 to 15 % less than the rate at which it is advanced to the zone, preferably 5 to 15 % less when bulk yarns are fed directly from a zone in the untangling of the filaments of the feed yarn or the feed yarn takes place by means of underdrawing "

Under certain circumstances, it may be feasible and the appearance of the yarn can be improved by also eliminating lateral vibrations in the treated yarn, while this is being withdrawn from the blending zone, peripherally suppressed (i.e. by tubular enclosure downstream of the zone in a type comparable to the upstream tubular enclosure and Way). This additional enclosure is z. B. applicable to edible yarn that are colored and accordingly contain less than about 0.3% by weight of a yarn finish.

The invention further provides a device for blending of filaments of multifilament yarn or yarns with a fluid jet filament commingling body a yarn passage, which is preferably an im substantially cylindrical in shape, with a yarn input end and a yarn output end extending, wherein at least one fluid line leads through the body and into the passage, the axis of which is the longitudinal axis of the Passage, a means for supplying compressible fluid under high pressure to the conduit,

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means for advancing yarn or yarns at a directed speed to the entrance end of the passage, a means for pulling off commingled yarn from the yarn exit end and one between the means for feeding it forward of yarn and the yarn input end arranged yarn guide, which has a straight yarn path between itself and the Defined yarn inlet end, which runs coaxially to the passage, available, which is characterized by that the guide is essentially formed by a tube, the Lfingsaufnahme substantially coaxial with the Passage is aligned and along a straight path between the means for advancing yarn and the Entrance end of the passage is arranged, the diameter of the longitudinal opening smaller than that of the Passage, but large enough to allow the yarn or yarns to pass freely through the longitudinal opening to allow, while lateral filament vibrations and lateral yarn movement are limited in its periphery or suppressed, and wherein the longitudinal opening with its exit end near the entrance end of the Yarn passage is and a substantial length, d. H. of at least 3 inches (7.62 cm).

The longitudinal opening or bore is preferably at least 12.7 cm (5 inches) in length, more preferably At least 10 inches (25.4 cm) according to the procedure described above.

Usually the ratio of the diameter of the Passage to the ring opening of the pipe at least approximately 1.3: 1.0, and preferably no greater than about 4.0: 1.0. The device is particularly effective when the exit end of the upstream tube is a distance from the entrance end of the passage im Range is about 0.32 to 1.27 cm (0.125 to 0.50 inches).

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For bulk yarns, conventional carpet denier, i. H. in the Range from 1100 to 17,000 dtex (1000 to 15,000 denier), effective tube opening diameters are in the range of about 1.52 to 6.35 mm (0.06 to 0.25 inches).

The device can be compared to a guide tube \ ron Dimensions and relative spacing dimensions between the exit end of the yarn passage and the withdrawal means coaxially along the yarn path "IO be equipped.

f ~ - Application of water to the yarn prior to blending improves the feasibility and the blending efficiency of the process. Water application devices for such purposes are known as such. The water application is to take place at such a rate that one about 5 to 25 ^percent.? ₀ on the yarn, but the amount of water is not critical.

1 shows a device according to the invention applied to the union of three puffed, multifilament edible yarns into a single, cohesive, speckled, dyed bulky yarn. The apparatus is provided with a machine support plate 10 on which a yarn guide 12 is mounted, onto which a water applicator 14, a direction changing roller 16 and a means for feeding the yarn in the form of a pair of driven rollers. - the roller 18 and the associated her folded roll 20 - follow ,, Further, the upstream guide tube 30 and a Optionally measure ^ performing downstream pipe guide 36 (not shown whose openings are) held coaxially in alignment of carriers 32 or ₀ 38, wherein the cylindrical yarn passage 33 is located in the nozzle body 34. In its cross-sectional view, the nozzle body 34 shows the passage 33 cut perpendicularly by the smaller fluid line 35. The fluid line 35

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becomes a compressible fluid under pressure from a Source not shown. Pie length of the jet device generated by the action of the fluid The blending zone is defined by the space between C the pipe guides 30 and 36. The means to pull off of the commingled urine from the commingling zone is formed by the idling take-off roller 40. The roller 40 is followed by a roller (not shown) for presentation on conical packages or, Q other appropriate roller and take-up arrangements. The position of the roller 40 is held by the carrier 42 so that a straight yarn path from the roller 18 to the Roller 40 is defined, which is coaxial with the. Pipes 30 and 36 and the passage 33 runs.

As shown in Fig. 1, differently dyeable, multifilament food cotton yarn 50, 52, 54 from separate packages on a creel (not shown) below the action of the rollers 18, 20 through the guide 12 and Water application device 14 and drawn around the roller 16 and then in the converged, abutting one another Condition into the upstream end of tube 30 and through body 34 and tube guide moved forward. The take-off roller 40 pulls the yarns as a blended, speckled, dyeable, cohesive one Bulky thread 58 off.

The device shown in FIG. 2 corresponds to that of FIG. 1 with modifications: The one as an optional measure the provision of the downstream pipe guide 36 has been omitted. A powered one was also provided Tension roller 24 with the interlaced roller 2 2 assigned to it, together with fastened in a base 26, parallel brake rods 28 for untangling filaments of the edible yarns before being blended.

The tubular guides stabilize the yarn and apparently allow a more effective way in this way

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Blending by the jet in the blending zone. Man also minimizes the formation of single filament loops, which occurs when "unlayered" filaments are fixed in position by the tangling process. If desired, you can easily narrow the entrance to the yarn passage, z. B. through »in eccentric yarn gate the in Fig. 2 of HS-PS 4 n.59 873 shown type or by a concentric narrowing, like a hole smaller Diameter in one .in the entrance to the yarn passage attached metal plate, but such a narrowing tends to lower its effectiveness the confusion zone, resulting in less confusion in the nodal areas results. If the confusion is more than sufficient anyway, such a narrowing can be achieved use a slight jet delivery effect on the yarn as it exits the blending zone exercise or to develop a more even, less knotty structure along the yarn.

The edible yarns for the purposes of the invention can be compact or puffed. As bulked feed yarns are preferably employed, the yarns have been bulked a _s the "through a hot fluid Strahlbauschprozessj ζ example of the type described in U.S. Patent No. 3,781,949. Sol-e yarns have superior bulk and usually some cohesion due to intermingling of the filaments, but such intermingling is usually only a portion of the filaments at any point along the yarn and rarely all of the filaments in a given location. For this reason, when two or more of these yarns are combined according to the invention without prior removal of this intermingling, the filament bundles open to a limited extent _? so that the filaments of different yarns can mix to a certain extent , but if you then mix-dye the resulting yarn , the appearance of the yarn mainly shows a strong mix of the individual yarn colors with only a slight mix of colors.

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If you can achieve this cohesion by tensioning the beams and slowing down the feed yarns before they are able to work together removed, the filaments of the yarn acquire the capacity /, to open and mingle more freely and more frequently, whereby

c more zones of mixed colors are formed.

The term "bulked" or "intoxication ..." as used here refers to yarns with permanently crimped filaments, ie filaments that retain their crimp ^{when they are removed from the yarn.}

The term "differently dyeable" refers to yarns which can be mixed dyeing in a common dye liquor to form different colors or shades. The term also includes differently colored yarns, since such yarns remain "colored" differently by their nature during dyeing - even when dyeing with a common dye - that is, they continue to show different colors.
20th

The testing of yarns used for the purposes of the invention for filament intermingling on the basis of cohesion or Coherence factor is carried out in the known manner by placing a yarn sample in a vertical position under the action the tension exerted by a weight whose size in grams is 0.20 times the Garndenier corresponds to, but does not exceed 100 g. A weight-loaded one becomes through the yarn bundle Hook introduced whose total weight in grams is numerically equal to the average single filament denier of the yarn, but not more than 10g, and down at a speed of 1 to 2 cm / s Let it move until the hook weight is borne by the twine. The characteristic value for the degree of filament intermingling in the yarn is the distance the hook has moved along the yarn until its weight is off Yarn was worn. The result is expressed as the coherence factor, which by definition is equal to 100,

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divided by the distance covered in centimeters above. Because the filament mixing is statistically disordered a sufficiently large number of samples is tested, in order to arrive at a representative average value for the tested yarn.

In the case of more strongly blended coarse denier yarns, such as carpet yarns, which have been produced according to the invention, stands with the check for lateral separation a more distinguishable measure of the cohesion of the yarn to disposal. To carry out this known test, one leads roughly at an arbitrarily chosen point Place two hooks in the center of the yarn bundle sample to divide the bundle into two filament groups. The hook are fed at a speed of 12.7 cm / min (5 in per minute) pulled apart at an angle of 90 ° to the axis of the sea, which is determined by means of a tensile strength testing machine, such as an Instron-type machine that measures resistance to hook separation. Man pulls the yarn apart by means of the hooks until the force exerted equals 454 g (1 pound) and sets at this point the machine comes to a standstill and measures the distance between the two hooks as the value to be recorded. 10 determinations are carried out on each yarn and determined the average as the pull-apart value. The yarn samples for the test should have a length of at least 10 to 15 cm (4 to 6 inches) and taken randomly from the entire package of yarn under test

will.
30th

example 1

This example explains the importance of yarn guides in the method and device according to the invention in an attempt using bulked edible yarn that already has a massive amount of filament intermingling (Yarn cohesion), as it is usually found in

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Nylon bulky filament yarn is submitted for commercial use Use as G; irne for direct buffing of Carpets are provided. 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 jet device had a thread passage with a length of 2.540 + _ 0.00254 cm and with a constant diameter of 0.58 + _ 0.00254 cm (1.000 or 0.228 + _ 0.001 inches) that is perpendicular in its center was cut by a cylindrical fluid conduit of 0.32 + _ 0.00254 cm. The cut Fluid line center line the center line of the passageway to within 0.00254 cm. The edges: the yarn entry and -exiting ends of the passage were smoothed by rounding to a radius of 0.76 mm.

The jet was made from a block of stainless steel metal (Type 416) 3.81 cm wide by 2.54 cm Height and 2.86 cm depth. The passage ran through the block in a vertical direction between the head and bottom end and in the middle at both ends. The throat centerline was 1.27 cm away from the front of the block and the fluid line entered from the back of the block. The block body was for screwing formed with a distributor for feeding the fluid line with compressed air.

The fluid line was supplied with air at a pressure P .. of 10.34 bar (150 pounds / square inch gauge), which flowed through the passage at a speed of 1.02 N-m / min at ambient temperature.

The conveyor rollers 18, 20 worked according to one Delivery of the yarns at 914 m / min, with the yarns revolving around the rollers in at least 8 loops to get one to ensure reproducible feed speed. With

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RD 3500 -ΙΟΙ the water application device 14 was applied to the yarns water at 3.79 l / h. - The speed of the take-up roller for a conical package winding-, was according to a yarn advance from the conveyor}: 5 rollers to the take-up roller of 3 % set.

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"For peripheral suppression of lateral vibrations in

I the yarn upstream of the jet device was a

j piece of seamless stainless steel commercial pipe from

4 10 27.9 cm. Length and 2.13 mm inner diameter arranged so

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ι that it was aligned coaxially with the yarn passage and between

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leave a space of 0.64 cm. The entrance end of the tube was about 13.97 cm from the point at which the feed yarns left the surface of the feed roller I on their way to the jet device.

j Using this device, experiments were carried out with

, ^} three edible yarns according to each of the following working methods:

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1 A) As edible yarn - each of 1361 dtex (1225 den) -

nylon commercial filament bulky yarns (DuPont) were used, the

prepared in a hot fluid jet-to-wire Bausch Process 1 f "- were The yarns were different dyeable; ',, 25 having a yarn was with cationic dye (type 854) Toggle ·: dyeable, another (with acidic dye type 855th ) bright

• can be dyed and the third with acid dye (type 857)

> i. · Can be dyed deeply. The yarns contained a conventional one I producer spinning layer within the framework of the standard quantities

-. ³⁰ of an average of 0.7 % size on the yarn and of

Packing limits in the range from 0.4 to 1.35 % size

on the yarn.

A cohesive single yarn was formed from the three yarns under the above conditions. A visual examination of mixed colored ^ strands showed _overall: add with periodic entanglement node regions (Nodal

Interlace Structure) with a considerable

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Retraces «in Filamentvcrmcnj'.uirp (despite the confusion, the the edible yarn was already present in each). The yarn yielded a pull-apart value of about 3.18 cm.

Another yarn was made from the same three edible yarns under the same conditions but with an additional one Using a pipe guide made that had the same dimensions as above and coaxially aligned downstream of the nozzle body yarn passage, the distance between the passage outlet and the entrance to the downstream guide tube 0.64 cm fraud. A visual examination of mixed-colored strands of the resulting yarn as well as the pull-apart test Coherence values obtained indicated that the yarn was essentially that obtained without the downstream pipe Yarn corresponded.

B) Using the same process conditions as in A), three runs of draw-dyed nylon filament bulky yarn (182OT-497) were entangled to form a single yarn exhibiting cohesion. The yarns had been randomly space dyed which gave a beige / brown speckled appearance on the food pack reels. On the basis of dyeing textile producers size was reduced on the yarn to about 0.25 wt.%. Using the upstream as well as the downstream pipe guide, the yarn produced as above showed a desired, regular, periodic interlacing structure (interlace structure), which resulted in a pull-apart value of 4.06 cm. Working under the same conditions, with the modification that no water was applied to the yarn, produced a low degree of intermingling for which the pull-apart test was not conclusive.

In a third experiment, water was applied only the upstream pipe guide is used. The resulting yarn showed an undesirable structure

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ι present with disordered in statistically intervals l.'inc-s of the urine Verflechtunj'.sknotenbereichen at an average pull-apart value of 5.84 cm. From this it can be concluded that when tangling spelled yarns with "low yarn size values such as 0.3 %, the best results are obtained with water application and using pipe guides both upstream and downstream of the nozzle device.

Example 2

This example shows the effectiveness of pipe guides on the basis of the same snow yarns and conditions as in Example 1, A, with the modification that initially the massive cohesion present in the edible yarns (coherence factor 25 to 50) with formation of a coherence factor of less than 6 from each yarn , 0 is removed. For this purpose, the filaments are subjected to untangling under tension using a device of the type shown in FIG. 2 by means of a series of parallel brake rods. Four brake rods of 6.35 mm diameter made of steel were used, spaced about 1.27 cm from the center. The speed of the tension rollers (24, 22) was set in accordance with the development of a tension acting on the yarns between the rollers and the conveyor rollers of about 1.06 dN / tex (1.2 g / den). The use of these feed yarns of low cohesion allows an increase in the lead between the conveyor rollers and the take-off roller to 10 %. Mixed-colored strands of yarn obtained in this way have produced a desired, regular structure with periodic interlacing knot areas between which sections of strongly intermingled threads were present. The pull-apart test showed a value of 2.29 cm.

This procedure was repeated under the same conditions with the modification that no application water onto the yarn with the water application device

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was carried out. The product was again a heavily mixed, heavily tangled yarn with an pull-out value from an inch on, but the periodic, highly tangled areas were less dense than above. One needs hence no water application under these conditions to achieve a good product.

The process was repeated (using water) with the modification that the speed of the feed yarn was increased to 1828 m / min and the overfeed to 12%. Mixed-colored strands of yarn produced in this way showed a marked difference in the tangle structure compared 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 randomly randomly mixed filament bundle with a more even density along the yarn. Taking into account the high yarn speed and the relatively slow air flow in the nozzle (1.02 Nm
very good.

(1.02 Nm ³ / min) was the degree of filament intermingling

From these experiments it can be concluded that filament bulk standard commercial feed yarns, which contain normal amounts of dope (i.e. at least about 0.75 liters) only upstream for effective operation Require guide tube.

Similar results are 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 have been obtained. Differences in color mixing and in the degree of confusion were low 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 essentially kept constant.

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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 a tension of 1.01 dN / tex. (T, 14 g / den) untangled to a coherence factor of less than 6.0 The device was upstream of the nozzle with a single guide tube 27.94 cm long and 3.86 mm inside diameter with its downstream end being at a distance of 6.35 mm from the yarn passage inlet.The nozzle was designed with the modification as in Example 2 that the diameter of the fluid line was 3.96 mm with a pressure P. of 5.17 bar at 25 ° C., which resulted in a flow rate of 0.64 Nm "/ min. A 3-slot applicator at a flow rate of 3.79 l / h is used to apply the water. The product yarn take-off speed was controlled with a cheese make-up roll at 920 m / min, which resulted in an overfeed of 11 % . The cohesive product yarn was wound up 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 in comparison with Example 2, a dyed knitted fabric showed off the yarn that the yarn was more mixed than a control yarn, which under the appropriate conditions, but at a much higher air pressure and a much higher flow rate according to the method and with the device according to U.S. Patent 4,059,873.

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Example 4

This example explains the effects of the Führunrsrohrl the work behavior and the appearance of the Urine under the working conditions of Example 3.

Identical attempts were made with the modification that Tubes with lengths of 2.54, 7.62, 12.7 and 27.94 cm as well as a textile yarn guide of 0.64 cm lengths were tested and finally without any guidance at all between the Conveyor rollers and the yarn door was worked.

Work behavior was best with the 27.94 cm pipe. The yarns entering the shorter tubes exhibited an unstable vibration process that occurred on the 7.62 cm and 12.7 cm pipes were particularly noticeable.

Mixed-dyed strands from the yarns were evaluated for their appearance: It was found that for production an even, well-blended yarn one tube length of at least 3 inches was necessary. With shorter tubes as well as without tubes, yarns with less blending were made and a less uniform nodal distribution.

Based on both work behavior and 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 to the manufacture of a very high denier mottled yarn for

Carpets.
35

The device corresponded to FIG. 2, whereby by means of the brake rods the edible yarn was erroneous to a coherence factor of less than 6.0. There were hot fluid jets

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Nylon-66-Handel sf i lamentf.arnc three Τλ'ροη to one Hinze! Yarn combined, two yarns of each yarn type (a total of six yarns) were used. The types of yarn were a cationically dyeable, medium blunt 1361 dtex yarn (Type 494), a sour, light-colored, medium-blunt 1361 dtex yarn (type 4 95) and a deeply dyeable acid, medium-sized tips of 2744 dtex yarn (Tvp 497Λ). The nozzle body construction corresponded to the above examples with the modification that the passage diameter Was 0.79 cm and the air line was 0.54 cm in diameter. The pipe was with air.

with a pressure P .. of 6.90 bar with a herring -

u,

fed at a speed of 1.12 N-nT / min. The feed rate of 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 throat. The yarn take-off speed was controlled at 377 m / min with a conical make-up roller, which resulted in an overfeed of 10 % . The resulting yarn had a total denier of 11556 dtex and had a structure with periodic interlacing knot areas with a considerable amount of filament intermingling between the component yarns. A mix-dyed carpet made from the yarn exhibited a non-directional mottled appearance, with the deeply dyed component yarn predominating.

Example 6

This example demonstrates the application of the invention to doubling compact (non-bulked) yarns for manufacture a cohesive, compact yarn of a coarser denier.

Three runs of a drawn, non-twisted, flat nylon 66 yarn of 1111 dtex were used as the edible yarn

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68 filament that had not been subjected to entanglement and was essentially free of filament entanglement. The Ciarn contained 0.8 % of a conventional yarn size.

The device corresponded to Example 3 with the modification that the tension rollers and brake rods were not used because the edible yarn was already essentially free of filament tangles.

The compressible fluid was air with a pressure P .. of 6.90 bar at a flow rate of

τι 4
0.84 N-nf / min used. The winding tension was 200 g. The yarns obtained had a linear density of about 3444 dtex.

: Attempts were made with two different leads, in each case with the one upstream of the mixing zone Single pipe guide and without the same. Otherwise the working conditions corresponded to example 3. Results:

With tube Without tube

Lead, % 2.1 7.6 2.1 7.2

Expanding 3.56 3.12 5.92 7.16 value, cm

As can be seen from these results, the tubing improves the VeroQ's filament entangling efficiency confluence zone in a significant way.

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Claims (25)

Claims 1. A method of intermingling filaments of a multifilament yarn or of multifilament yarns under feeding the yarn or yarns through a fluid jet filament blending zone, which have an enclosed yarn passage with a yarn inlet and a yarn outlet, where the yarn passage between these preferably has a substantially cylindrical shape, and impinging on at least one high velocity jet of compressible fluid the yarn or yarns in the passage for the purpose of vibrating and mingling filaments of the same, while preventing lateral filament vibrations in the yarn or yarns upstream of the blending zone characterized in that the yarn or yarns are advanced along a path to the zone and withdraws therefrom, which is substantially coaxial with the passage, and lateral filamentary vibrations in the yarn or yarns directly upstream ".""" · ^: · 3UO069 Rn 33on - 2 - since in the zone peripheral tubular enclosing restricts that extends from the beginning of the "•» up to pihfin point nabe dein ilarnetnganp and upstream of the same length of the path coaxially across a distance of at least 3 inches is enough. 2. The method according to claim 1, characterized in that on the yarn or yarns in the passage oinon Hinzolstrnhl compressible fluids? from eim-r IHchtung Ulngsnchse perpendicular to the passage brings to impinge. 3. The method according to claim 1 or 2, characterized in that several yarns are fed to the passage. 4. The method according to claim 3, characterized in that there is at least two yarns in the plurality of yarns which can be colored differently in relation to each other. 5. The method according to claim 3 or 4, characterized in that one in the plurality of yarns at least nin draw-dyed and bulked yarn is used. 6. The method according to one or more of the preceding claims, in particular according to claim 3 or 4, characterized characterized in that the tubular enclosing continues from that point upstream for a distance of at least 12.7 cm. 7. The method according to claim 6, characterized in that the tubular enclosing from that point upstream of the same · continues over a distance of at least 25.4 cm. 8. The method according to one or more of the preceding claims, in particular according to claim 4, characterized in that that you can make the yarns, especially the 3H0069 RD 3300 - 3 - differentially dyeable yarns, into the passage with a coherence factor of less than 6 _s 0. 9. The method according to one or more of the preceding claims, in particular claim 1, 2, 3 or 4, characterized characterized in that one the yarns in the passage with a speed of at least 1371 m / min. 10. The method according to one or more of the preceding claims, in particular claim 2, 3, 4, 7 or 8, characterized in that yarn exhibiting cohesion is withdrawn from the zone at a speed which is 2 to 15% less than the speed, with which the yarn is fed to the zone. 11. The method according to one or more of the preceding claims, in particular claim 2, 3 or 4, characterized characterized by having lateral filament vibrations in the commingled yarn downstream of the exit the passage through tubular IJmschliessen, the starting from a point near the exit, downstream of the exit over a substantial distance continues, peripherally restricted. 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 one or more of the preceding claims, in particular claim 3, 4 or 8, characterized characterized in that a bulked yarn is used as the yarn or at least one of the yarns = * "· 3H0Q69 Rl) 33OD _ 4 _ 14. Apparatus for intermingling filaments of multifilament yarn or yarns with a fluid jet filament mixing body, through which a yarn passage, der_v.or preferably one that is essentially close to the cylinder, extends Has shape, with a yarn input end and a yarn output end, extending through the body and at least one fluid line leads into the passage, the axis of which is the longitudinal axis of the passage cuts, a means for supplying compressible fluid under high pressure to the conduit, a means for forwarding yarn or yarns at a controlled speed to the entrance of the passage, a means for withdrawing commingled yarn from the exit yarn end and one between the means for feeding it forward of yarn and the yarn inlet end arranged yarn guide, which has a straight yarn path between defines itself and the yarn entry end which is coaxial with the passage, characterized in that that the guide (30) is essentially formed by a tube, the longitudinal opening of which is essentially coaxially aligned with the passage (33) and along a straight path between the means (18, 20) for advancing yarn and the entrance end of the passage (33), the diameter the longitudinal opening is much smaller than that of the passage (33), but large enough to to allow a free passage of the yarn or yarns through the longitudinal opening, while lateral Filament vibrations and lateral yarn movement are limited in it peripherally, and where the »Longitudinal opening with its exit end near the entrance end of the passage (33) and has a sufficient length to beam-induced, lateral Filament vibrations in the yarn or yarns upstream to prevent the exit end of the longitudinal opening substantially. ■ ϊ- i : · - "" - 3U0069 . RD 3/500 - 5 - 15. The device according to claim 14, characterized by a fluid injection line (35) which connects the passage (33) cuts perpendicularly and has a significantly smaller cross-sectional area than the passage (33). 5 . '' ' 16. The device according to claim 14 or 15, characterized shows that the longitudinal opening of the pipe has a length of at least 12.7 cm. 17. The apparatus according to claim 16, characterized ^in: that the pipe longitudinal opening has a length of at least 25.4 cm. 18. Device according to one or more of claims 14 to 17, in particular 16 or 17, characterized in that that the ratio of the diameter of the passage (33) to the pipe longitudinal opening is at least approximately 1.3: 1.0. 19. Device according to one or more of the claims 14 that the distance of the output end of the longitudinal tube opening lies to 18, in particular claim 18, characterized cm from the entrance end of the passage (33) in the range of about 0.32 to 1 _a 27th - 25th 20. Device according to one or more of claims 14 to 19, in particular claim 18, characterized in that that the diameter of the pipe's longitudinal opening ranges from about 1.52 to 6.35 mm. 30th 21. Device according to one or more of the claims 14 to 20, characterized in that the means for guiding the yarn or yarns (18, 20) forward works with a feed speed of at least 1371 m / min. 22. Device according to one or more of claims 14 to 21, in particular claim 15, 16 or 17. RI) 3300 - 6 - characterized in that the urine evacuating means operates at a speed 2 to 15 % less than the speed of the means for advancing the yarn (18, 20). 23. The device according to one or more of claims 14 to 22, in particular according to claim 15, characterized characterized in that the means for guiding yarn (18, 20) forward, the pipe longitudinal opening, the passage (33) and the means for drawing off yarn between the means for feeding forward and for drawing off Define a continuous, straight yarn path of yarn. 24. Device according to one or more "of claims 14 to 23, in particular according to claim 23, characterized in that that a second tube (30) for guiding the yarn between the passage outlet end and the means for Withdrawal of yarn along the yarn path is provided, this second tube also being one for has passage (33) and to the yarn path coaxial longitudinal opening, the diameter of which is smaller than that of the passage (33) is, but sufficient for a free passage of the puffed, intermingled yarn to allow during lateral yarn and filament movement be peripherally restricted in the longitudinal opening, and with its yarn inlet end close to the passage outlet is arranged. ³ ^ 25. The device according to claim 24, characterized in that the means for drawing off yarn operates at a speed which is 2 to 15 % less than the speed of the means for guiding forward Yarn (18, 20) is.
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