TW201623713A - Machine and method for the production of fancy yarns - Google Patents

Abstract

The machine comprises a core yarn (FC) feeding path; an effect yarn (FE) feeding path and an elastomer yarn (FL) feeding path. The machine also comprises a texturing and interlacing jet (51), where the paths of the core yarn (FC), the effect yarn (FE) and the elastomer yarn (FL) converge. The texturing and interlacing jet is configured and arranged to join together, in a single operation, the core yarn, the effect yarn and the elastomer yarn.

Description

Machine and method for producing fancy yarn

The present invention relates to the production of wire and yarn, in particular to the field of synthetic threads and yarns. More specifically, the present invention relates to the production of so-called composite yarns in which core yarns, fancy yarns and elastomer yarns are combined to obtain a predetermined use in the clothing, decoration, and automotive industries. And composite yarns for the production of textiles for other applications.

In the textile industry for the production of textiles of various types in the two fields of clothing and decoration, and in the automotive industry for the interior decoration of motor vehicles or the like, so-called composite or fancy yarns are Use frequently. These yarns are obtained by combining at least one core yarn and at least one fancy yarn. Core yarns and fancy yarns typically comprise a plurality of fibers or so-called filaments produced by extruding a molten polymer. The combination of the core yarn and the fancy yarn can occur in a false twist forming process in which the fine threads are individually subjected to false twisting and heating steps to induce curling in the filaments forming the two yarns by mechanical and thermal effects. Subsequently, the core yarn and the fancy yarn are combined to obtain a fancy yarn. The fancy yarn is mainly arranged around the core yarn. Stretching, heating, and false twisting processes are often referred to as texturing processes.

An alternative method for producing fancy yarns provides a combination of core yarns and fancy yarns without heating and false twisting, as opposed to by means of air nozzles. In this case, air or jet deformation processing (so-called Taslanizing) will be mentioned.

An example of an air texturing machine is described in EP 1544333. In such air texturing machines, at least one fancy yarn and at least one core yarn are combined by means of a high velocity air nozzle which crimps the filaments forming the two yarns. To this end, the two yarns are fed via an air nozzle. Fancy yarns are typically fed at a higher speed than core yarns such that the filaments of the fancy yarn are primarily disposed outside of the core yarn and surround the core yarn.

The textured yarn is used as a covered yarn of an elastomeric yarn or an elastomer (for example, Lycra®) under certain conditions. In some known embodiments, the elastomeric yarn coated with a fancy yarn obtained by combining a fancy yarn with a core yarn is obtained in another so-called interlaced nozzle. The fancy yarn coats the elastomer yarn to obtain a composite yarn, and the textile is manufactured by means of the composite yarn.

The interlacing of the elastomeric yarn and the fancy yarn typically takes place in a separate machine relative to the texturing machine (which is an air texturing machine or a false twisting machine and a heat deforming machine). In certain situations, in particular in a false twist texturing machine, the combination of the textured yarn and the elastomeric yarn occurs in the same machine that performs false twisting and heating, but is placed in the deformation process along the yarn feeding path. Occurs in a separate workstation downstream of the component.

EP-A-0161572 describes a method for producing a composite yarn in which three yarns are fed into an interlacing nozzle. The first yarn is fed from the bobbin and formed by a yarn that was previously subjected to a false twist process in the upstream and by means of a different machine. The second yarn is also a yarn obtained by rotationally cutting the fibers in an upstream process. The third yarn is an elastomer yarn. In the interlaced nozzles, the three yarns are simply combined by means of a stream of air without further processing.

WO-A-88/09403 describes a method and a machine for producing yarns, in particular sewing threads. The wire is formed from at least two yarns bonded to each other by means of a third adhesive yarn. No deformation processing is provided in this case.

WO-A-2013164791 describes a method and machine for producing a composite yarn. The yarn is unwound from the first spool and is subjected to deformation by passing through an oven and then through a false twisting spindle. The yarn thus treated is fed into an interlacing nozzle which is combined with the elastomeric yarns and the third inelastic yarns from the respective spools in the interlacing nozzle. The third yarn is a yarn that was previously subjected to an air deformation process in a separate machine.

US-A-4,615,167 describes a method of making a bellows yarn by bonding one or more fancy yarns to a core yarn by means of an interlacing nozzle, which does not provide for the use of elastic yarns.

EP-A-0269184 describes a machine for producing composite yarns by means of air interlacing. The machine provides a single path for inelastic yarns and a single path for elastic or elastomeric yarns. The two yarns are unwound from two separate spools and fed via interlaced nozzles. The interwoven nozzle is constructed and configured for bonding the inelastic yarn to the elastic yarn. The composite yarn thus obtained is collected on a spool. In addition to the two paths mentioned above, this known machine does not provide any other yarn path and does not provide any type of deformation processing.

The operations involved in the manufacture of fancy yarns or composite yarns comprising elastomers and coated yarns are complex, difficult to manage, and costly.

Therefore, there is a need for a simpler and less expensive machine for making composite yarns. There is also a need for new manufacturing methods that overcome, in whole or in part, the shortcomings of the known methods described above.

According to a first aspect, a core yarn for producing a combination of yarns is described A machine of a composite yarn comprising a thread, a fancy yarn and an elastomeric yarn comprising a core yarn feed path, a fancy yarn feed path and an elastomeric yarn feed path. In addition, the machine includes a deformed and interlaced nozzle in which the core yarn path, the fancy yarn path, and the elastomer yarn path are separated from one another (i.e., prior to bonding). The deformation and interlacing nozzle is constructed and configured to bond the core yarn, the fancy yarn, and the elastomer yarn together in a single operation. Furthermore, the nozzle performs a deformation process on the yarn fed through it.

The fancy yarn and the core yarn and the elastomer yarn are thus obtained in a single deformation and interlacing nozzle and thus utilize a single operation of a jet deformation and interlacing process. The machine is more compact, economical and easier to control than existing machines.

It has to be noted that the interlaced and deformed nozzle has a shape which is known per se from a simple interlaced nozzle which does not perform any type of deformation of the yarn. According to the present invention, by using an interlacing and deforming nozzle instead of simply interlacing the nozzle, it is possible to perform a number of processes on the yarn moving through the nozzle, thereby obtaining a more streamlined procedure and a smaller, cheaper and more productive Machine. It is not necessary to provide a deformation system, such as a false twist, in the path upstream of the deformation and interlacing nozzle. It is also not necessary to use a yarn that has been subjected to a deformation process in the previous step.

A single or multiple ovens may be disposed upstream of the deformation and interlacing nozzles, the fancy yarn path and the core yarn path passing through the oven prior to being fed through the deformation and interlacing nozzles.

In some embodiments, the machine also includes a wetting head upstream of the deforming and interlacing nozzle. The wetting head can be configured with the core yarn passing through the wetting head while other yarns are not passed through the wetting head relative to the paths of the yarns. In other specific examples, the elastomer The yarn and/or the fancy yarn can also pass through the wetting head.

In an advantageous embodiment, the machine can include a godet disposed between the deformed and interlaced nozzle and the crimping unit for crimping the composite yarn. The composite yarn exiting the deformation and interlacing nozzle is conveyed around the godet. In some embodiments, the godet is heated.

The machine can include one or more ovens. The path of the fancy yarn and the path of the core yarn pass through an oven or through two different ovens. Along the fancy yarn path and/or the core yarn path, individual stretching devices can be configured, such as a pair of rollers. In some embodiments, the stretching devices are constructed and controlled to stretch the core yarn and the fancy yarn at different draw ratios.

In some embodiments, the stretching devices are configured such that the yarn is stretched in a portion of the path comprising the oven.

According to still another aspect, a method for producing a composite yarn having a core yarn, a fancy yarn, and an elastomer yarn combined together includes the following steps: - along a flower a yarn feed path feeding a preferably non-deformed fancy yarn; - feeding a preferably non-deformed core yarn along a core yarn feed path; - feeding along a feed path for one of the elastomer yarns The elastomer yarn; the elastic yarn, the core yarn and the fancy yarn separated from each other are conveyed into a deformation and interlacing nozzle; - the core yarn is deformed by means of the deformation and interlacing nozzle The fancy yarn is joined together by the elastomer yarn, the core yarn, and the fancy yarn.

According to an advantageous embodiment, the fancy yarn and the core yarn can be heated in an oven along one of their respective feeding paths. A single oven can be used for both yarns or two Different ovens.

Features and specific examples are disclosed herein below and will be further elaborated in the accompanying technical solutions which form an integral part of the description. The above brief descriptions set forth the features of the various embodiments of the present invention in order to provide a better understanding Currently, there are other features of the invention which will be described hereinafter and will be set forth in the accompanying claims. In this regard, it is to be understood that the specific embodiments of the present invention are not limited to the details of the construction illustrated in the following description or . The invention is capable of other specific embodiments and of various embodiments. Also, it will be understood that the phraseology and terminology used herein is for the purpose of description

Thus, those skilled in the art will appreciate that the conception of the present invention can be readily utilized as a basis for the design of other structures, methods and/or systems for the purpose of practicing the invention. Therefore, the technical solutions are considered to be important in the scope of the technical solutions without departing from the spirit and scope of the invention.

1‧‧‧ Machine

2‧‧‧Working unit or location

3‧‧‧ creel

5‧‧‧Support

7‧‧‧Channel/Path

9‧‧‧Support structure

11‧‧‧Oven/furnace

11A‧‧‧Inlet guiding element

11B‧‧‧Export guiding elements

13‧‧‧ box

Upper wall of the 13S‧‧ box

15‧‧‧Guide elements

16‧‧‧Guide elements

17‧‧‧Roller

18‧‧‧Roller

19‧‧‧Roller

20‧‧‧Roller

21‧‧‧Guide elements

23‧‧‧Roller

24‧‧‧Roller

25‧‧‧Roller

26‧‧‧Roller

29‧‧‧Guide elements

31‧‧‧ Third guiding element

33‧‧‧ Arm

35‧‧‧Electric roller

37‧‧‧Collection zone/collection location/collection unit

39‧‧‧Electric roller

41‧‧‧Distribution device

51‧‧‧Deformation processing and interlacing nozzle

53‧‧‧Guiding elements/pipes

53A‧‧‧ entrance

53B‧‧‧Export

55‧‧‧Guide roller / intermediate zone

57‧‧‧埠

61‧‧‧ Wetting head

61F‧‧‧ slot

63‧‧‧ pole

65‧‧‧Connector

69‧‧‧Guide elements

A-A‧‧‧Vertical plane

B‧‧‧ spool

BC‧‧‧ spool

BE‧‧‧ spool

BL‧‧‧ spool

F‧‧‧Composite yarn

FC‧‧‧core yarn

FE‧‧‧Fancy yarn

FL‧‧‧elastomer yarn

O‧‧‧Operator

X-X‧‧‧ axis

The invention will be better understood from the following description, taken in conjunction with the accompanying drawings. More specifically, in the drawings: Figure 1 shows a section of a vertical plane according to the front of the work comprising a machine for making a plurality of stages or positions of a composite yarn; Figure 2 shows a box containing a deformed and interwoven nozzle The enlargement of the conveying zone of the yarn; Figure 3 shows the section of the box containing the deformed and interlaced nozzles; Figure 4 shows a schematic cross section of a deformed and interlaced nozzle; Figure 5 shows a section similar to Figure 1 in a different embodiment.

The following detailed description of the exemplary embodiments is referred to the accompanying drawings. The same reference numbers in different figures identify the same or similar elements. In addition, the drawings are not necessarily drawn to scale. Further, the following detailed description does not limit the invention. Indeed, the scope of the invention is defined by the scope of the accompanying claims.

The phrase "a specific example" or "an embodiment" or "an embodiment" or "an embodiment" or "an" . Thus, appearances of the phrases "in a particular embodiment" or "in a particular embodiment" Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

1 shows a section of a vertical plane of a working front portion according to a machine (indicated generally by the numeral 1) comprising a plurality of work units or positions 2 that are equal to one another and configured according to one front or two opposite front faces. Figure 1 shows a half section of the machine 1 with the other half section being substantially symmetrical about the vertical plane A-A. In other embodiments, machine 1 may have a single unit of work unit or position 2.

The machine 1 is associated with one or more creels 3, and the yarn spools BC, BE are disposed on the one or more creels. The spools BC and BE may be the same or different from each other, for example, the spools may contain different types of yarns. Figure 1 shows only one part of the creel 3, which may have a large number of supports 5 for a corresponding number of spools BC, BE. A creel can contain spools BC, BE as a machine 1 One or more work units 2 are fed.

In other embodiments, between the creel 3 and the front portion where the work unit 2 is aligned, the operator 7 can be provided with a passage 7, which can thus be accessed to various working positions 2. Above the channel 7, the support structure 9 can be extended, to which a plurality of elements can be connected, which define a feed path for the core yarn and a feed for the fancy yarn for each work unit or position 2. Paths from the spools BC, BE of the creel 3.

In the embodiment shown in Figures 1 and 2, one or more ovens 11 are associated with the structure 9, the fancy yarn path from the bobbins BE, BC of the creel 3 and the core yarn path are passed through the one or Multiple ovens. In some embodiments, at each working location or unit 2, the core yarn FC and the fancy yarn FE are fed along two feed paths that may partially coincide with one another. In the particular embodiment shown, the core yarn FC and the fancy yarn FE are fed via a single oven 11 towards a working position or unit 2, which is supplied with inlet guide elements 11A for yarns FC and FE, respectively. The outlet guiding member 11B. The single oven can be sized such that a number of pairs of yarns FC and FE that are destined for the front party of the machine 1 or a number of pairs of yarns FC and FE of the work position 2 pass. In other embodiments, a separate oven may be provided for each pair of yarns FC, FE destined for a single work unit or position 2.

The core yarns and fancy yarns can be, for example, polyamide 6 yarns, polyamide 66 yarns, polyester yarns, or other yarns suitable for the processes described herein.

In some embodiments, each working position 2 includes a bin 13 in which the air-deformed and interwoven elements of the core yarn FC, the fancy yarn FE, and the elastomeric yarn FL are placed. The elastomer yarn is from the spool BL. In the particular example shown (see Fig. 2 for details), the spool BL of the elastomer yarn FL is placed close to the box 13. The spool BL can also be further away from the box 13 Place. The deformation and interlacing elements contained in the case 13 will be described below with particular reference to Figures 3 and 4.

In some embodiments, the bin 13 can contain several deformation and interlacing elements for a number of working positions.

In some embodiments, the path from the core yarn FC of the spool BC can extend along the guide member 15 and one of the pair of rollers 17, 18 that are electrically compressed, at least one of which is electrically The upstream of the inlet 11A of the furnace 11.

Downstream of the outlet 11B of the oven 11, the path of the core yarn FC continues through a nip point defined between the other pair of rollers 19, 20 that are pressed against each other, at least one of which is electrically powered. Self-defining the nip point between the rollers 19, 20, the path of the core yarn FC extends as far as the box 13, and the core yarn FC is schematically indicated by the guiding element (for example, by numeral 21 in Fig. 3) The ceramic piece) enters the box.

In a known manner, the rollers 17, 18 stretch the yarn FC from one of the spools BC positioned on the creel 3 and feed the yarn towards the oven 11 at a speed corresponding to the peripheral speed of the rollers 17, 18. . The rotational speed of the rollers 17, 18 can be variable and controllable.

The rollers of the pair of rollers 19, 20 also have a peripheral speed that is variable and controllable. In the specific example of the machine described herein, the peripheral speed of the drums 19, 20 is higher than the peripheral speed of the drums 17, 18 such that the core yarn FC is in the section between the drums 17, 18 and the drums 19, 20. Stretched. In the zone where the yarn is stretched due to the difference in peripheral speed between the rolls 17, 18 and the rolls 19, 20, the oven 11 heats the yarn FC.

The path of the fancy yarn FE extends along the guiding element 15 or along another guiding element separate from the guiding element 15 and through a nip point defined by a pair of rollers 23, 24 in the pair of rollers At least one of them is electrically powered. The rollers 23, 24 are upstream of the inlet 11A of the furnace 11.

Downstream of the outlet 11B of the furnace 11, another pair of rollers 25, 26 may be provided, at least one of which is electrically powered. Downstream of the drums 25, 26, the path of the yarn FE continues as far as the tank 13. Another guiding element 29 is associated with the box (for example a ceramic piece), the path of the fancy yarn FE extending through the guiding element and thus penetrating the inside of the box 13.

Similar to the rollers 17, 18 and 19, 20 already indicated, the rollers 23, 24 may also have a peripheral speed different from the speed of the rollers 25, 26, and the two pairs of rollers 23, 24 and 25, 26 may have a variable Controllable speed.

In order to obtain the desired degree of stretching of the two yarns FE, FC, the rolls 25, 26 preferably have a peripheral speed higher than the peripheral speed of the rolls 23, 24. In this way, the fancy yarn FE is between the pair of rollers 25, 26 and the pair of rollers 23, 24, and in particular the yarn FE extending through the oven 11 which thus heats the section of the stretched yarn FE The section of the path is subjected to stretching. The difference between the peripheral speeds of the rolls 23, 24 and 25, 26 may be equal to the difference between the peripheral speeds of the rolls 17, 18 and 19, 20. However, in general, the two speed differences defining the degree of stretch imparted to the two yarns FE and FC can be different from each other such that the two yarns FE and FC are subjected to different stretch percentages. For example, fancy yarn FE can withstand a higher degree of stretch.

The degree of stretching (i.e., the percentage of elongation imposed on the yarns FE and FC) may depend on the final characteristics desired to be obtained by the yarn and/or the characteristics of the source yarn wound around the bobbins BE and BC. In this case, the source yarn is usually a so-called Partially Oriented yarn (POY). The stretching experienced by the yarn completes the orientation of the yarn, i.e., changes the molecular structure of the polymer forming the yarn. The fancy yarn FE is typically subjected to a higher degree of stretch, i.e., the fancy yarn is extended more than the core yarn FC.

If the yarn used is Fully Drawn yarn (FDY), then It is possible to avoid the use of the oven 11, even if the oven remains switched or kept at a low temperature. Furthermore, the pair of rollers arranged along the path of the yarn can be rotated at the same peripheral speed without stretching the yarn.

In some embodiments, it is possible to use an oven in conjunction with the use of FDY. In some embodiments, it is possible to, for example, a minimum stretch percentage of 0.2%. FDY provides advantages in the interweaving step through the oven.

In the specific example shown in Figures 1 and 2, the spool BL of the elastomer yarn FL is supported in a very close proximity to the box 13 and in any case respectively than the spool BE of the fancy yarn FE and the core yarn FC And BC is closer to the position of the box 13. Although the latter actually follows the path formed by the plurality of pairs of rollers 17, 18; 19, 20; 23, 24; 25, 26 and the oven 11 (the paths extend around the operator's channel 7 and the tensile and thermal stabilization elements Re-feeding along these paths, but the spool of elastomeric yarn FL is as close as possible to the inlet of the tank 13. The oven has a third guiding element 31, such as a ceramic piece, for passing the elastomeric yarn FL inside the tank 13.

It is also possible to arrange the bobbin BL of the elastomer yarn FL at a greater distance from the box 13, for example above the structure 9, below the structure and above the path 7, or even on the creel 3. However, the configuration of the bobbin BL of the elastomer yarn FL close to the box 13 allows for a more regular effect and better control of the tension of the elastomer yarn FL to be obtained.

In some embodiments, the spool BL can be carried by an arm 33 that allows movement of the spool to replace the empty spool with a new spool. In the position where the bobbin BL of the elastomer yarn FL is disposed, it is possible to provide the drum 35 on the outer cylindrical surface of the bobbin BL. In this manner, the rotation of the appropriately motorized drum 35 controls the unwinding of the spool BL and the feeding of the elastomeric yarn FL toward the tank 13 and inside the tank.

Inside the box 13, the three types of yarns FC, FE and FL are used in this way and The combination of elements described in detail below with reference to Figure 3 is such that composite yarn F is obtained on the exit side of tank 13 and in any working position 2 of machine 1. The latter is then sent to a respective collection zone 37 to form a bobbin or spool B by means of a winding system that can include a motorized drum 39 and a dispensing element 41, all as known per se to those skilled in the art.

In the particular example shown, along the front portion where the working position 2 is located, the machine 1 has a plurality of locations 37 for collecting the composite yarns F and winding the composite yarns one upon another. In the illustrated example, the collection location 37 is configured at three overlapping levels to reduce the overall size of the machine 1 and the length of the front portion along which the working position 2 configuration is located. It is also possible to arrange a plurality of collection positions larger than or smaller than three, or even to arrange the collection positions 37 at the same height instead of overlapping each other.

The collection system of the composite yarn F on the spool B can be configured, for example, as described in US 7426820, the contents of which are incorporated herein by reference or in any other appropriate manner.

Figure 3 shows a possible specific example of the components contained inside the box 13. In a preferred embodiment, the tank 13 contains a deformed processing and interlacing nozzle 51 at which the paths of the core yarn FC, the fancy yarn FE and the elastomer yarn FL converge. Deformation processing and staggered nozzles 51 (which may be configured as shown in Figure 4 and better described below by means of injection of pressurized air) perform a dual function on the three yarns FC, FE and FL, ie the deformed core yarn FC and fancy yarn FE and the yarns are interwoven around the elastomer yarns over the elastomer yarns.

On the exit side of the deformation processing and interlacing nozzle 51, a composite yarn F is thus obtained, which can be processed from the tank 13 via a guiding element 53 (for example a ceramic piece) to feed towards the corresponding collecting position 37.

As shown in Figure 1 of the specific description, the guide roller can also be arranged downstream of the tank 13. 55, the yarn F is wound around the godet to form a plurality of turns. The godet roller 55 can be heated or used to stabilize the composite yarn prior to collecting the composite yarn F on the corresponding spool B. If the overlapping collection positions 37 are disposed under the box 13, a plurality of godet rollers 55 arranged side by side may be disposed in the extending direction of the front portion of the machine, one collecting roller per collecting unit 37. Only one of the godet rollers 55 is visible in FIG.

The single deformation and interlacing nozzles can be disposed in a single box 13. In this case, a bin 13 will be provided for each work unit or location 2. It is also possible to arrange several deformation processing and interlacing nozzles 51 for a plurality of working positions or units 2 in the same tank 13.

Referring to Figure 4, the main component of the deformed processing and interlacing nozzle 51 is a conduit 53 having an inlet 53A and an outlet 53B. The inlet 53A is turned toward the entry zone of the yarns FL, FC and FE. The yarn is guided inside the conduit 53 in a zone having a gradually decreasing transverse section which extends from the inlet 53A as far as the intermediate zone 55 of the deformation processing and interlacing nozzle 51. In this intermediate zone 55 where the conduit 53 can have a substantially constant cross section, the gas vent is channelized via a variable number of inlets 57 and is disposed along an axis X-X along which the conduit 53 extends. The end section of the duct 53 towards the outlet 53B has a gradually increasing cross section. In the thus shaped pipe 53, the three kinds of yarns FL, FC and FE are bonded to each other to form the composite yarn F due to the compressed air injected through the crucible 57. In the deformation processing and interlacing nozzle 51, there is a combined deformation operation of the yarns FC and FE and an interlacing operation of the yarns and the elastic yarns FL.

The configuration of the deformation processing and interlacing nozzle 51 shown in Fig. 4 is merely an example, as other specific examples are possible depending on, for example, the production speed, the size of the yarn used, the number of yarn filaments, and the like.

Deformation and interlacing nozzles can be, for example, as in US 7,752,723 or EP 1.541.727 (The content of which is incorporated herein by reference).

In some embodiments, a wetting head to which water or another suitable liquid is supplied may be disposed between the guiding elements 21, 31 and 29 of the yarns FC, FL and FE and the inlet of the deforming and interlacing nozzle 51. 61, to wet one or more of the yarns FC, FL, FE fed into the deformation and discrimination box 13. In other embodiments, the wetting head 61 can be omitted.

In the particular embodiment shown, the wetting head 61 is supported on the upper wall 13S of the tank 13 by means of a rod 63. A pipe (not shown) may be connected to the coupler 65 to supply water inside the wetting head 61, and in more detail, water is supplied into the groove 61F through which one or more of the yarns FE, FC, FL may be fed.

In the particular example shown, only the core yarn FC is fed along the groove 61F via the wetting head 61 to be wetted by the water supplied to the wetting head 61. In other embodiments, the fancy yarn may be fed into the trough 61F along with the core yarn FC or only the fancy yarn FE.

Preferably, the elastomer yarns FL are not transferred into the wetting head 61. In the particular example shown in Figure 3, the elastomeric yarn FL is guided outside the wetting head 61 along a path as close as possible to the path of the core yarn FC, which in turn passes through the wetting head 61. . In some embodiments, for this purpose, the elastomeric yarn FL can be guided by a guiding element 69, such as a ceramic piece. The guiding element can have an open U-shaped section to facilitate the entry of the elastomeric yarn FL by laterally approaching the guiding element 69.

The fancy yarn FE can be moved along a path that is slightly distant relative to the wetting head 61, and in this possible embodiment, is therefore not guided along any guiding elements that are fixed to or on the wetting head 61.

With the machines described so far, it is possible to manufacture core yarns The composite yarn F of the elastomer yarn Y covered by the FC, the fancy yarn FE and the textured yarn obtained by combining the yarns FC and FE. By combining the three yarns FC, FE and FL in a single deformation and interlacing nozzle 51, a substantial simplification of the machine is obtained, with a smaller number of yarn guiding elements, a shorter path of the yarn and a smaller total of the machine. size. In addition, with a single deformation and interlacing nozzle, compressed air consumption is reduced, resulting in a consequent and substantial savings in energy and also reduced machine noise. Thanks to the presence of a smaller number of yarns through the components, the adjustment of the machine can also be simplified.

As already mentioned, the core yarn FC and the fancy yarn FE may be so-called partially oriented yarns (POY) or so-called fully drawn yarns (FDY). In the first case, the FC and FE yarns are preferably stretched along the path from the creel 3 to the box 13, and more precisely, with respect to the core yarn FC between the pair of rollers 17, 18 and 19, 20. Stretching and stretching between the rollers 23, 24 and 25, 26 with respect to the fancy yarn FE. As already mentioned, thanks to the fact that the feed and draw rolls are independent of the two paths of the yarns FC and FE, the stretch percentages for the two yarns may be the same or different. In general, the yarns and FEs may be identical or different from one another at the outset. The structure of the yarn is changed under any conditions due to stretching and possibly by heating of the oven 11, so that when leaving the pair of stretching rolls 19, 20 and 25, 26, respectively, the two yarns FE and FC will typically have Features that are partially different from each other. It is also possible to apply the same stretch percentage to both the yarns FE and FC, thereby obtaining the same yarn.

In some embodiments, core yarn FC and fancy yarn FE can be stretched with the same stretch percentage and then fed to subsequent deformation and weaving steps at different overfeed percentages.

However, in general, the fancy yarn FE is higher than the speed of other yarns. The speed (i.e., with a larger overfeed) is fed to the deforming and interlacing nozzles to be more disposed on the outer portion of the final composite yarn F to form a coating.

In some embodiments, a dual oven 11 can be provided, one for the fancy yarn FE and the other for the core yarn FC. In this way, it is possible to adjust the temperature at which the drawn yarn is stable, which is different for the yarns FE and FC. However, in a preferred embodiment, as shown in the figures, the oven 11 can be singular and its temperature can be adjusted to fit the compromise of both the yarns FC, FE, even when such yarns are in essence When different and/or subject to different stretch percentages.

When the yarn FC and/or the yarn FE is a fully drawn yarn (FDY), no further stretching is required, and thus the feed and stretching rolls 17, 18; 19, 20; 23, 24 and 25 are not required. The peripheral speeds of 26 may be adjusted accordingly such that the yarns themselves are not further stretched along the respective sections of the path of the yarns FE and/or FC. The starter oven 11 can be revoked.

In other embodiments, as illustrated in FIG. 5, when the use of the oven 11 and the stretching of the core yarn and the fancy yarn are not necessary, the machine may have a simplified structure in which the flower from the creel 3 The yarns FE and the core FC yarns are fed directly to the tank 13 by means of a feeding unit. In FIG. 5, the same numerals indicate the same or equivalent components as those described with reference to FIG. 1.

In the specific example shown in FIG. 5, no oven 11 is mounted on the support structure 11. The path of the yarns FE and FC from the creel 3 along the guiding element 15 and along the other guiding element 16 towards the pair of feed rollers 17, 18 for the core yarn FC and for the fancy yarn One of the lines FE extends to the feed rolls 23, 24. From this pair of rollers 17, 18 and 23, 24, the core yarn FC and the fancy yarn FE are fed directly to the inlet of the tank 13. The elastomer yarns FL from the bobbin BL (preferably disposed in the winding unit which is also positioned adjacent to the tank 13 in this case) are fed to the tank 13 However, it should be understood (as indicated with reference to Figure 1) that the winding unit of the spool BL of the elastomer yarn FL may also be on the side of the creel 3.

Downstream of the tank 13, elements equivalent or identical to those described with reference to Figure 1 are also arranged.

The specific examples described above and illustrated in the drawings have been described in detail as examples of specific examples of the invention. It is obvious to those skilled in the art that modifications, variations, additions and omissions are possible, however, without departing from the scope and teachings of the invention as defined in the appended claims. The scope of the invention is therefore to be determined solely by the broadest description of the scope of the accompanying claims, and such modifications, variations, additions and omissions are included. The term "comprising" or "comprises" does not exclude the presence of elements or steps other than those specifically recited in the claims. The use of the terms "a" or "an" or "an" If the technical solution of the device claims a plurality of "components", some or all of the "components" may be activated by a single component, component or structure. The elucidation of a given element, feature, or component, which is different from the scope of the application, does not exclude the possibility of combining the elements, features, or components. When a method of designing a series of steps, if a particular sequence is not indicated as being fixed, the sequence used to enumerate such steps is not fixed and can be changed. Any reference numbers in the accompanying claims are provided to facilitate the reading of the scope of the claims and the scope of the claims.

13‧‧‧ box

Upper wall of the 13S‧‧ box

21‧‧‧Guide elements

29‧‧‧Guide elements

31‧‧‧Guide elements

51‧‧‧Deformation processing and interlacing nozzle

53‧‧‧Guiding elements/pipes

61‧‧‧ Wetting head

61F‧‧‧ slot

63‧‧‧ pole

65‧‧‧Connector

69‧‧‧Guide elements

F‧‧‧Composite yarn

FC‧‧‧core yarn

FE‧‧‧Fancy yarn

FL‧‧‧elastomer yarn

Claims (23)

A machine for producing a composite yarn having a core yarn, a fancy yarn and an elastomer yarn combined together, comprising: a core yarn feeding path; a fancy yarn feeding path An elastomeric yarn feeding path; a deformation processing and interlacing nozzle, wherein the core yarn feeding path, the fancy yarn feeding path, and the elastomer yarn feeding path are concentrated; the deformation processing and interlacing nozzle is designed and The core yarn, the fancy yarn, and the elastomer yarn are configured to be joined together in a single operation. The machine of claim 1, wherein at least one of the ovens is disposed along at least one of the fancy yarn feed path and the core yarn feed path. A machine according to claim 1 or 2, comprising a wetting head upstream of the deformation processing and interlacing nozzle, wherein the core yarn feeding path passes through the wetting head. The machine of claim 3, wherein the elastomer yarn feeding path comprises a guiding element adjacent to the wetting head such that the elastomer yarn is adjacent to but outside the wetting yarn One of the path segments moves. A machine according to one or more of the preceding claims, comprising a box, the deformed processing and interlacing nozzles being disposed in the box, and wherein three separate guiding elements are associated with the box, the guiding elements are Along the core yarn feed path, along the fancy yarn feed path and along the elastomeric yarn feed path. A machine according to one or more of the preceding claims, comprising: An interlacing nozzle is coupled to a godet between the collection unit for collecting the composite yarn, and the composite yarn exiting the deformation processing and interlacing nozzle is conveyed around the godet. A machine as claimed in claim 6 wherein the godet is heated. A machine according to one or more of the preceding claims, wherein the core yarn feed path and the elastomer yarn feed path have at least one substantially matching portion. The machine of claim 2, wherein along the fancy yarn feed path and the core yarn feed path, the respective stretching devices are configured to point at a point upstream of the oven and one of the downstream of the oven The yarn is stretched between. A machine according to one or more of the preceding claims, comprising an unwinding unit for unwinding a reel elastomer yarn adjacent to the deformation processing and interlacing nozzle. A method for producing a composite yarn having a core yarn, a fancy yarn and an elastomer yarn combined together, comprising the steps of feeding the flower along a fancy yarn feeding path Yarn; feeding the core yarn along a core yarn feeding path; feeding the elastomer yarn along an elastomer yarn feeding path; separating the elastomer yarn, the core yarn, and the The fancy yarn is conveyed into a deformation processing and interlacing nozzle; the core yarn and the fancy yarn are deformed by the deformation processing and interlacing nozzle, and the elastomer yarn, the core yarn and the fancy The yarns are bonded together. The method of claim 11, wherein the fancy yarn fed along the fancy yarn feeding path is a non-deformed fancy yarn. The method of claim 11 or 12, wherein the core yarn is fed along the core The core yarn fed by the diameter is a non-deformed core yarn. A method of claim 11, wherein the method of heating the core yarn along the core yarn feeding path is as described in claim 11, claim 12, or claim 13. A method of claiming one or more of clauses 11 to 14, comprising the step of heating the fancy yarn along the fancy yarn feed path. The method of one or more of clauses 11 to 15, wherein the core yarn is wet prior to insertion into the texturing and interlacing nozzle. The method of claim 16, wherein the core yarn passes through a wetting head, and the fancy yarn and the elastomer yarn pass outside the wetting head. A method of claiming one or more of clauses 11 to 17, comprising stretching the fancy yarn between the fancy yarn and the respective core of the core yarn and the deformation processing and interlacing nozzle a step of at least one of a yarn and the core yarn, wherein the fancy yarn and the core yarn are unwound from respective rolls. The method of claim 18, wherein at least one of the fancy yarn and the core yarn is stretched along a path portion between a point upstream of an oven and a point downstream of the oven. The method of claim 18, wherein the fancy yarn and the core yarn are stretched at different stretch ratios to each other. The method of claim 20, wherein the core yarn is stretched at a lower draw ratio than the fancy yarn. The method of one or more of clauses 18 to 21 wherein the core yarn is drawn and then wetted prior to being fed into the texturing and interlacing nozzle. The method of any one or more of clauses 11 to 22, wherein at least one of the core yarn and the fancy yarn is tensioned upstream of the deformation processing and interlacing nozzle, the core yarn The fancy yarn is preferably subjected to a higher tension than the fancy yarn.