JPS6314103B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a method for producing fancy yarn having a large number of loops, tangles, slacks, knots, etc., bulkiness, yarn irregularities, slabs, etc. by a fluid agitation process, and further relates to Specifically, we manufacture fancy yarns with arbitrary shapes, such as the so-called spindle shape where the thickened portions of the threads, such as thread irregularities and slabs, are thinner at both ends and thicker at the center, or several tens of centimeters long. It's about how to do it. Although ordinary multifilament yarns have various excellent functional characteristics such as spinnability, they have the disadvantage of being poor in variation. Conventionally, in order to solve this problem, a method has been known in which the excessive amount of yarn supplied to the jet nozzle is rapidly increased intermittently to produce a yarn having thickened portions and thinned portions. There is. However, according to this method, the retained portion of the yarn is supplied at once by the strong propulsive force of the jet nozzle, so the thickened portion is extremely thick at one end and has a tail from the center to the other end. Only yarns with a shape that became thin as if pulled were obtained, and in particular, it was not possible to obtain yarns with long thickening parts such as slab parts of 20 cm or more. Further, according to the above method, since the excessive supply amount of yarn is rapidly increased, the shape of the loop is rough and entanglement tends to be insufficient. The present invention has been made to eliminate such conventional drawbacks, and its purpose is to maintain the functionally excellent characteristics of the filament yarn, and to create an elegant natural structure that has spindle shapes, long yarn irregularities, slabs, etc. in the longitudinal direction of the filament yarn. The object of the present invention is to provide a method for producing flavorful Huangshi yarn. That is, the present invention provides a processing method in which bulkiness is imparted to one or more multifilament yarns by causing a large number of loops, entanglements, or slacks using a jet nozzle (fluid agitation device). Resistance is temporarily applied to the running yarn between the jet nozzle and the position where the resistance is applied, and the excessively supplied yarn is sucked in by a negative pressure suction flow between the position where the resistance is applied and the supply roller, and the yarn is retained. The amount of supply to the jet nozzle is reduced by forming a path, then releasing the resistance from the yarn and advancing the stagnant yarn using the ejection force of the jet nozzle to restore the yarn path to its original state. The gist of this is a method for producing fancy yarn, which is characterized by applying braking to the yarn to return the yarn path to its original state when changing the degree of loops, tangles, and slack. be. The present invention will be explained in more detail. A multifilament yarn running at a constant supercharging rate formed by a pair of supply rollers and a take-off roller is provided with a negative pressure yarn suction device, The yarn is fed to a processing area equipped with a yarn resistance device and a jet nozzle (jet fluid agitation device). A yarn running path is formed across the entrance of the negative pressure yarn suction device, and although the suction device is always kept in an air suction state,
When the yarn resistance device does not work, the yarn is maintained at a constant nozzle pressure and yarn traveling speed without being suctioned by the yarn traveling driving force of the jet nozzle, against the suction force of the suction device. , and certain loops, slack, etc. are formed. When the yarn resistance device operates, the yarn is supplied between the supply roller and the take-up roller in a constant supercharging state, so the supercharging rate between the yarn resistance device and the jet nozzle decreases. The yarn between the supply roller and the yarn resistance device becomes slack, and this slack yarn is sucked into the yarn suction device which is in a constantly suction state to form a stagnant yarn path. Next, the resistance is released and the yarn path of the stagnant yarn is returned to its original state, but at this time, braking is applied to the yarn to return the yarn path to its original state and the yarn path of the yarn is restored. Extend the recovery time. In order to apply braking to the yarn, methods such as applying resistance that is lower than the resistance when forming the yarn path that is retained in the yarn, or temporarily applying resistance to the yarn are adopted, as described later. be done. For example, when the resistance by a yarn resistance device is removed, a portion of the resistance is removed, or at the same time as all of the resistance is removed, a resistance smaller than the resistance is applied to gradually remove the retained yarn. to move forward. Or by applying a resistance greater than, less than, or equal to the resistance for a short period of time after the resistance is removed and the retained yarn begins to return to its original yarn path, until it completely returns to its original path. By extending the time required for the retained yarn to return to its original yarn path, the substantial amount of supercharging is gradually increased. In this way, the shape of the slab part of the yarn is thin at the tip and rear end and thick in the center, so-called anti-weight type, or the slab part is quite long, for example, about 40 cm in length. form is obtained. On the other hand, in the method of the present invention, by removing a part of the resistance, the yarn that was once stuck starts to return to the original yarn path, but because some of the resistance remains, the yarn As a result of the path not returning suddenly but gradually returning under braking, a spindle-shaped slab can be obtained in which the slab part is strongly intertwined and the center of the fanciful part is thickest. Furthermore, by applying a resistance that is less than the resistance at almost the same time as all of the resistance is removed, the retained yarn begins to return to its original path, but at the same time, a resistance that is less than the resistance is applied. As expected, Itomichi's return will be gradual. In addition, by removing the resistance and applying a resistance that is greater than, less than, or equal to the resistance for a short period of time until the accumulated yarn returns to its original yarn path, the accumulated yarn can be removed. The return time to the original thread path is also extended. In this case, when applying resistance for only a short period of time, when applying resistance that is greater than or equal to the resistance for yarn retention, the time should be extremely short, and when applying a small resistance, the time should be relatively long. do it. That is,
To obtain a certain return time, if the resistance is large, the resistance addition time should be shortened, and if the resistance is small, the resistance addition time should be lengthened.The relationship is as follows: This is a relationship that results in a value. As mentioned above, the magnitude of the resistance applied to retain the yarn is such that the supercharging rate between the yarn resistance device and the jet nozzle decreases and the yarn is slackened between the supply roller and take-up roller. It is necessary that the amount of resistance is such that it occurs, and it is preferable to set the resistance so that it does not become too large and cause extreme thread thinning and poor interlacing. If the excess supply between the yarn resistance device and the take-up roller, that is, the overfeed amount to the jet nozzle, which occurs as a result of applying resistance, is substantially less than 5%, the entanglement will be extremely reduced, and each yarn will have no loop slack locally. The filament becomes a yarn with loose parts. Furthermore, the yarn must be sufficiently thickened, and one factor that contributes to the thickening is a large yarn path accumulated in the suction device, but depending on the purpose of use, The size of the thread path may be selected appropriately. In the method of the present invention, two or more yarns, at least one of which is a multifilament, are fed to a jet nozzle at the same speed or different speeds, and at least one of the multifilament yarns is given resistance, and then fed out from a supply roller. forming a stagnant yarn path such that the yarn is sucked into a negative pressure suction device, and further removing part of the resistance from the yarn, or removing all of the resistance and simultaneously providing a resistance smaller than the resistance. By doing so, it is possible to gradually move the retained yarn forward and return the yarn to its original path. In other words, when forming locally thick portions in the longitudinal direction of the yarn,
Rather than the intertwined state of a thick yarn intertwined part where the supercharging rate is partially increased, which is formed by simply releasing the yarn path that has accumulated in one yarn, it is preferable to supply multiple yarns and use one of the yarns. The yarn is always run at a constant supercharging rate without change, and resistance is applied to at least one other multifilament yarn, and the yarn sent out from the supply roller is sucked into a negative pressure suction device, and the yarn is retained. The supercharging rate is increased by forming a path and then gradually advancing the retained yarn by removing part of the resistance from the yarn or removing all of the resistance and simultaneously applying a resistance smaller than the resistance. The intertwined state of the thick thread intertwined portion obtained by bringing about an increase in is more tightly formed. Furthermore, if each group of two or more multifilament yarns is fed to the jet nozzle at different feeding speeds,
It is preferable that the feeding speed of the yarn that partially increases the supercharging rate by releasing the stagnant yarn path is higher than the feeding speed of other fed yarns. In other words, adding yarn resistance causes a temporary decrease in the supply speed, but if yarn resistance is applied to a yarn with a small feeding speed, the supercharging rate at which the yarn is supplied to the jet nozzle will increase. This will be significantly different from the supercharging rate of other yarns with high feeding speeds, resulting in poor intertwining conditions. However, if the yarn is drawn out at a high feeding speed, it is possible to perform the interlacing process without making the supercharging rate significantly different from that of other yarns, and it is possible to perform the interlacing process without making a large difference in the supercharging rate from other yarns. formation can be avoided. In this way, the present invention does not intermittently reduce or increase the amount of yarn supplied to the jet nozzle by changing the rotational speed of the supply roller or take-up roller, but instead applies resistance to the running yarn. By forming a stagnant thread path such as by applying a thread and drawing it into a negative pressure suction device, and further removing a part of the resistance from the thread, or removing all of the resistance and simultaneously providing a resistance smaller than the resistance, Either the stagnant yarn is gradually advanced to return the yarn to its original path, or the resistance is greater than the resistance after the resistance is removed and the stagnant yarn returns to its original path. , by applying a small or equal resistance for only a short period of time, the time required for the retained yarn to return to its original yarn path is extended. The slab part of the yarn can be controlled into a spindle shape with good entanglement or any useful shape, and the mechanical device does not require a mechanically complex conduction part, has excellent durability, and has a low processing speed. It has the advantage of being able to be raised sufficiently. The loops and slack yarns obtained by the method of the present invention do not have the uniform surface condition characteristic of filament yarns, but instead have a natural-looking thin fan. Becomes Siyaan. Synthetic fiber multifilaments are suitable as these yarns to be supplied, and drawn yarns or semi-drawn yarns (so-called POY) can be used, and yarns that have been subjected to false twisting and crimping, or forced crimping, It is possible to use a material that has been subjected to a crimping process such as gear crimping. Furthermore, recycled cellulose fibers such as rayon can also be used. Next, the present invention will be explained with reference to the drawings. In FIG. 1, a multifilament yarn 1 is supplied to a jet nozzle 3 via a supply roller 2,
It is sent out to the next process by a take-up roller 4. When resistance is applied to the yarn 1 by the yarn resistance devices 6 and 7, the yarn becomes slack between the supply roller 2 and the yarn resistance devices 6 and 7, and the slack yarn is subjected to negative pressure. As a result of being sucked in from the inlet ends A and B of the suction device 5, a yarn path ACB retained in the negative pressure suction device 5 is formed. The yarn resistance devices 6 and 7 are each composed of tensors of different weights, and the resistance of the yarn resistance device 6 is released here, while the resistance of the yarn resistance device 7 is not released. Here, as the load of the yarn resistance device 7, a load that does not form a yarn path retained in the negative pressure suction device is used when only the load is applied to the running yarn. By releasing the yarn resistance device 6, the retained yarn begins to be supplied, but since the yarn resistance device 7 continues to apply resistance, the supercharging rate is gradually increased, and the loop , tangles, tangles, etc. increase, forming thick threads that are locally highly entangled. FIG. 2 shows another embodiment in which the multifilament yarns 1, 1' are simultaneously fed to the jet nozzle 3 by supply rollers 2, 2' and the take-off roller 4
is sent to the next process. Yarn 1'
is always running at a constant supercharging rate by the supply roller 2' and the take-up roller 4. On the other hand, when the yarn 1 is given resistance by the yarn resistance device 6,
The yarn is slack between the supply roller 2 and the yarn resistance device 6, and the slack yarn is transferred to the inlet end A of the negative pressure suction device 5,
As a result of being sucked in from B, a thread path ACB is formed that remains in the negative pressure suction device 5. Next, at the same time as releasing the resistance of the yarn resistance device 6, a yarn resistance device 7 lighter than the resistance is added. The yarn resistance device 7 alone has such a load that it does not form a yarn path that remains in the negative pressure suction device. The resistance of the yarn resistance device 6 is released, the retained yarn is supplied with the resistance of the yarn resistance device 7 added, the supercharging rate gradually increases, and a thick yarn portion with strong entanglement is formed. be done. Next, when the heavier yarn resistance device 6 is added, the lighter yarn resistance device 7 is released, and this operation is repeated to partially form thick yarn portions (slab portions). At this time, it is preferable that the supply roller 2 is rotating at a faster surface speed than the supply roller 2'. Furthermore, another embodiment will be described using FIG. The yarn 1' is always running at a constant supercharging rate by a supply roller 2' and a take-off roller 4. When resistance is applied to the yarn 1 by the yarn resistance device 6, the yarn becomes slack between the supply roller 2 and the yarn resistance device 6, and the slack yarn is transferred from the inlet ends A and B of the negative pressure suction device 5. As a result of being sucked in, a thread path ACB is formed that remains inside the negative pressure suction device 5. Next, after the resistance of the yarn resistance device 6 is released, the resistance of the yarn resistance device 7 with the same load as the resistance is applied from the time when the stagnant yarn path starts to return to the original yarn path until the return is completed. Add for a very short time. By applying the resistance of this yarn resistance device 7 for a very short time, the retained yarn is not supplied suddenly but gradually, so the return time is extended and the supercharging rate increases over time. , thick threads with strong interlacing are formed. Further, switching between resistance application and resistance release of the yarn resistance devices 6 and 7 in FIG. 1 or 2 is controlled by programming by an automatic control device (not shown). The present invention intermittently increases or decreases the amount of yarn supplied to the jet nozzle, and uses a yarn resistance device and a negative pressure suction device to increase or decrease the amount of yarn supplied.
By skillfully combining the characteristics of this jet nozzle, yarn resistance device, and negative pressure suction device, by using the method of the present invention, fancy yarns such as slub yarns, which have conventionally had extremely low productivity, can be obtained at high speed. Can be done. Moreover, the yarn has loops and slack, and can be obtained in any useful form, such as a spindle shape or a long slab part of about 40 cm, and has a soft texture. A fancy yarn with good shape is obtained. Next, the present invention will be specifically explained by giving examples. Example 1 Processing was carried out according to the processing steps shown in FIG. 1 under the conditions shown in Table 1. The yarn resistance device 6 used a yarn tensioner with a load of 50 g, and the yarn resistance device 7 used a yarn tensioner with a load of 10 g. Resistance was applied using yarn resistance devices No. 6 and No. 7, resistance was released only from yarn resistance device No. 6, and yarn resistance device No. 7 was kept in a constantly applied state. By controlling the time interval of repeating resistance addition and release, thick yarn portions were made to appear at predetermined length intervals in the longitudinal direction of the yarn. The obtained thick threads had an average length of 24 cm and a maximum thickness of 3 mm, and were spindle-shaped. Although the loops of each flyment in the fine yarn part were hardly seen, the entanglement was strong.

[Table] Example 2 Processing was carried out according to the processing steps shown in FIG. 2 under the conditions shown in Table 2. Resistance is applied for 0.1 seconds by a yarn resistance device 6 consisting of a yarn tensioner with a load of 50g, and after the resistance of 6 is released, until the stagnant yarn path returns (0.01 seconds later), a yarn tensioner with a load of 40g is applied. The resistance of the yarn resistance device 7 becomes 0.01
Granted for seconds. The thick yarn portion of the obtained yarn had an average length of 40 cm and a maximum thickness of 2 mm, and both had a spindle shape. Structure 2/2 twill, density (warp 65 threads/inch, weft
64 yarns/inch) under the weaving conditions of polyester multi-flimented yarn 150D/36F/2 (regular type/cationic dyeable yarn blended yarn), the above invention was applied at a ratio of 2 out of 10 yarns in both warp and warp. When the fancy yarn obtained by the above method was inserted and woven, and dyed in two colors with cationic dye (brown) and disperse dye (beige), the narrow part was dyed with cationic dyeable yarn 1.
The intertwining of regular yarn 1' and regular yarn 1' resulted in a good heather, so the brown color did not appear streaky.
The brown spindle-shaped slabs stand out on the beige fabric, creating a textile rich in elegance.

【table】 [Brief explanation of the drawing]

FIG. 1 is a process explanatory diagram showing one embodiment of the method of the present invention, and FIG. 2 is a process explanatory diagram showing another embodiment of the method of the present invention. 1, 1'... Supply yarn, 2, 2'... Supply roller, 3
...Jet nozzle, 4...Take-up roller, 5...Negative pressure suction device, 6, 7... Yarn resistance device.

Claims (1)

[Claims] 1. One or more multifilament yarns,
In a processing method that uses a jet nozzle (fluid agitation device) to create a large number of loops, entanglements, or slack to impart bulkiness, resistance is temporarily applied to the running yarn between the yarn supply roller and the jet nozzle. The excessively supplied yarn is sucked in by a negative pressure suction flow between the position where the resistance is applied and the supply roller to form a retained yarn path, and then the resistance is released from the yarn and the yarn is transferred to the jet nozzle. By using the ejection force to advance the stagnant yarn and return the yarn path to its original state, the amount of supply to the jet nozzle can be changed to increase or decrease the degree of loops, tangles, and slack. A method for producing fancy yarn characterized by applying braking to the yarn to restore the yarn path to its original state. 2. The method for producing fancy yarn according to claim 1, wherein the yarn is braked by applying resistance that is lower than the resistance when forming the yarn path accumulated in the yarn. 3. A method for manufacturing fancy yarn according to claim 1, wherein resistance is temporarily applied to the yarn to apply braking to the yarn. 4. The method for manufacturing fancy yarn according to claim 1, wherein a yarn path is formed in which some of the multifilament yarns are retained among the plurality of multifilament yarns. 5. The fan yarn manufacturing method according to claim 4, wherein the feeding speed of the multifilament yarn forming the retained yarn path to the jet nozzle is higher than the feeding speed of other multifilament yarns.