JPS60110917A - Manufacture of polyester fiber - Google Patents

Abstract

PURPOSE:To obtain a uniformly and highly intertwined polyester fiber, by carrying out the intertwining treatment between the oiling device and the first take-up roll group, and between the latter take-up roll group and the winder. CONSTITUTION:The yarn Y is intertwined with the interlace nozzle 5a between the oiling device 3 and the first take-up roll 6, and transferred to the second take-up roll 7 keeping the length constant or under tension. The yarn is then intertwined with the interlace 5b between the second take-up roll 7 and the winder 10, and wound at a speed of >=5,000m/min. The yarn can be wound even under a low tension without causing single yarn breakage or whole yarn breakage.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an improved method for producing polyester m-fibers. More specifically, in the melt spinning method for polyester polymers, the occurrence of fluff and single filament breakage is suppressed, and a high level of uniform and stable yarn interlacing is performed.
The present invention relates to a method for producing polyester fibers by winding uniform threads.

[Prior art and its problems] A melt spinning method has been proposed in which the spinning process is equipped with an interlacing nozzle, compressed air is injected onto the yarn, the yarn is entangled, and then the yarn is wound.

However, with the recent increase in spinning speed, the next two major
Two problems have become apparent. First, as the spinning speed increases, it becomes difficult to impart the desired entanglement in the spinning process. Therefore, in order to provide sufficient entanglement, a method is generally adopted in which the interlacing nozzle is used at a higher pressure to inject compressed air onto the yarn. This causes problems such as fuzzing and single thread breakage. The second problem is that as the spinning speed increases, the accompanying airflow generated around the take-up roll increases, so unless the winding tension is set high, the yarn will wind backwards around the take-up roll and become stable. It will no longer be possible to carry out the same operations as before. However, when winding is carried out with such high winding tension, differences in yarn quality occur between the inner and outer layers of the wound package or between the center and end surfaces of the package, resulting in large differences in the yarn quality in the subsequent process. This has become a problem.

The present inventors proposed a melt spinning method to solve these problems. (Japanese Patent Application No. 57/98436, Japanese Patent Application No. 57/98437) That is, a polyester polymer is melt-spun, an oil agent is applied to the spun yarn by an oil agent applying device, and then it is wound up via a take-up roll. At this time, while taking off the spun yarn at a spinning speed of 5000 m/min or more, an effective length of 10~ 501111 is an interlace nozzle.

According to these methods, 1. there is less fuzz and single yarn breakage, and advanced interlacing treatment is possible; however, for example, there is a problem with the occurrence of fuzz in fine denier varieties, and there are applications that require higher interlacing. However, it turned out that it was still not completely satisfactory.

Furthermore, in high-speed warping and high-speed weaving that have been practiced in recent years, there is a strong desire for more stable passing properties. For this purpose, a yarn with good high-speed unwinding properties and high-speed flying properties (for example, in water jet loom [hereinafter abbreviated as WJL] weaving) is required. It has been found that such a yarn should have a yarn characteristic value of 20 entanglements/m or more on water, which will be described later, and be free of fuzz. As a result of further intensive studies, the present inventors have found a method that can sufficiently solve the above-mentioned problems, resulting in the present invention.

[Object of the Invention] That is, the present invention suppresses the occurrence of fuzz and single yarn breakage in the polyester melt spinning process.

Therefore, we propose a method for producing polyester fibers in which a uniform, stable, and advanced yarn interlacing process is performed and a uniform yarn is wound.

[Structure of the invention] In other words, the present invention melt-spun a polyester polymer,
After the yarn is cooled and solidified, an oil agent is applied, and then
When winding through at least two take-up roll groups,
The yarn is interlaced with at least one interlacing nozzle between the lubricant application device and the first group of take-up rolls, and then run between the take-up rolls for a long time or under tension, and then passed between the take-up rolls and the first take-up roll. This is a method for producing polyester fibers, which is characterized by performing an entangling process using at least one inklace nozzle between devices, and winding the fibers at a spinning speed of 5000 m/min or more.

The present invention will be described in more detail below.

The polyester polymer referred to in the present invention is primarily a polyethylene terephthalate homopolymer, but a polyester copolymer containing 85 mol% or more of polyethylene terephthalate can also be used.

In the present invention, at least one or more interlaced nozzles perform an interlacing process between the lubricant application device and the first take-up roll (hereinafter referred to as pre-entanglement process), and further between the subsequent take-up roll and the take-up roll (hereinafter referred to as pre-entanglement process). (referred to as post-confounding processing). As the spinning speed increases, the accompanying airflow generated around the take-up roll increases, so it is necessary to increase the winding tension in order to ensure stable yarn running and obtain good operability. For this reason, differences in yarn quality occur between the outer layer part and the inner layer part Jj of the wound package, and between the end face part and the middle heat part. In order to solve this problem, low tension winding is required, and it is important to obtain stable yarn running even at low tension.

The inventors found this point 1! As a result of various studies, it was discovered that by converging the yarns in the pre-entanglement treatment, there is no winding around the take-up roll, and stable operability can be obtained. In other words, the main reason for the instability of the running yarn is that the yarn comes apart due to the accompanying airflow generated around the take-up roll, making it easier for the yarn or the single yarns that make up the yarn to wrap around the take-up roll. It is important to focus to prevent this from happening.

Furthermore, in the focused state, the energy of the compressed air flow can be efficiently linked to imparting entanglement, and by performing a post-entanglement treatment, even higher entanglement can be achieved, resulting in stable operability even when winding at low tension. I found out.

Furthermore, by separating the chance of entanglement, there is no need to increase the pneumatic pressure excessively, and single yarn breakage and fluffing can be suppressed, which is also preferable from this point of view. However, although this method alone can reduce the generation of fuzz, it is still not sufficient, and because the yarn runs through the interlacing nozzle at high speed and under high tension, the migration between single yarns and the entanglement processing device That is, problems such as fuzzing due to abrasion of the yarn on the inner wall of the yarn path of the interlacing nozzle and partial stretching of the single yarn occur.

However, by increasing the spinning speed to over 5000 lllZ and combining it with the above-mentioned entanglement method,
It has been found that even when subjected to high-pressure entangling treatment under high tension, no single yarn breaks or fuzz occur, and no single yarns are even partially stretched. This is because when the spinning speed exceeds 5,000 m/min, the internal structure of the discharged yarn becomes extremely dense, and as the boiling water shrinkage rate decreases to 10% or less, crystallization is promoted and friction with the outside of the yarn occurs. This is thought to be due to the increased toughness against.

When the entanglement treatment is performed at a spinning speed of less than 500011/min,
During spinning, the entangling treatment equipment becomes so fluffy that it cannot be used for the spinning process. The spinning speed is preferably 5500 m/min or more.

Further, it is necessary that an oil agent be applied to the spun yarn before the interlacing treatment using the inklace nozzle. If no oil agent is applied and the above-described entanglement treatment is performed, even if the spinning speed is 50,001/min or more, single yarn breakage and fuzz will occur in the entanglement treatment device, and the object of the present invention will not be achieved. I can't.

The spinning speed in the present invention is the take-up speed determined by the first take-up roll after spinning from the spinneret.

In the present invention, running the yarn at a constant length or under tension between the take-up rolls prevents the running yarn from shaking, reverse winding, or slipping on the take-up rolls, and improves the uniformity of entanglement. improve. The stretch rate described below is preferably in the range of 0 to 1-0%, more preferably in the range of 0 to 8%. If it is less than 0%, yarn shaking, reverse winding, slipping of the yarn on the roll, etc. will occur, resulting in instability, which is not preferable. Moreover, if it exceeds 10%, the entanglement in the pre-entanglement process will come undone, and even if the post-entanglement process is performed, no entanglement will occur, which is not preferable. This is not preferable because it may cause rough fuzz and thread breakage.

The stretch rate referred to in this specification B is calculated from the following formula.

Stretch rate (%) An example of an embodiment of the present invention will be explained with reference to the drawings.

FIG. 1 is a schematic diagram showing an example of a preferred manufacturing apparatus according to the present invention. The polyester yarn Y melted and discharged from the spinneret 1 is cooled and solidified while passing through a cooling device 2, and is applied with a predetermined oil agent in an oil supply device 3. Thereafter, the interlace nozzle 58 imparts entanglement to form a bundled yarn, which is passed through a first take-up roll 6 at a speed of 5000 n+/min or more, and then passed through a second take-up roll 7 while slightly stretching the yarn. A higher degree of entanglement is applied by the interlacing nozzle 5b, and the yarn is wound into the winding v4 position 10 via the tension detector 8 and the yarn guide 9. Note that 4 is a vibration propagation prevention guide that prevents yarn vibration propagation due to the interlace nozzle 5a and ensures uniform oil supply.

In FIG. 1, the first take-up roll 6 is illustrated as the first take-up roll group, and the second take-up roll 7 is illustrated as the subsequent take-up roll group. In addition, in Fig. 1, there is one each for the first and second take-up rolls, but for the purpose of securely gripping the yarn, either one of the take-up rolls or each take-up roll may be made into a plurality of rolls. It is also possible.

As mentioned above, in the present invention, it is important to use one or more interlace nozzles in each of the pre-entangling process and the post-entangling process. Use a nozzle.

FIG. 2 is a schematic diagram of the main part of FIG. 1, showing an example in which two interlace nozzles are used for the name and post-entanglement processing. In FIG. 2, interlace nozzles 5 a l and 591 are installed before the first take-up roll and after the second take-up roll.
and two interlaced nozzles each.

In the present invention, it has been stated that it is important to use at least one inklace nozzle in the pre-entanglement and post-entanglement processes, but if more than one interlace nozzle is used in each or either of them, t4 in FIG. It is preferable that the interval between the individual interlaced nozzles shown in is 20 cm or more, and more preferably 3 Q cm or more.

This is because, if it is less than 200111, the string vibration motions, which can be said to be the source of interlacing, generated by each interlace nozzle interfere with each other, so the interlacing ability of each interlace nozzle decreases, and the interlacing is not sufficiently applied. This is not desirable because it tends not to be done. Incidentally, the increment nozzle interval t4 refers to the distance from the 6th center point in the longitudinal direction of the yarn path of one nozzle to that point of the other nozzle.

The oiling device used in the present invention may be any conventionally known oiling roller system, guide oiling system, etc.
In order to improve the uniformity of oil adhesion, a guide oil supply system is preferable.

In addition, as shown in FIG. 1, the distance tx between the oil supply device 3 and the interlace nozzle 5a increases the uniform lubricant adhesion effect in the oil supply device 3, so that the vibration propagation of the yarn by the interlace nozzle 5a is 3, preferably 50C1l1 or more, more preferably 1m or more, or refuel i! ! i position 3 and interlace nozzle 5a
It is preferable to install a vibration propagation prevention guide 4 to prevent the vibration propagation of the yarn between the yarn and the yarn. It is a sectional view taken along the line A-A' in Figure a. Figure 4 is a schematic diagram of the nozzle when it is passed through the yarn path, and the nozzle is seen from the direction of the arrow in Figure 3 a. The thread path, 11 is a compressed air inlet, 12 is a thread hook, and 13.13' is a nozzle front and rear guide.

In the present invention, the effective length, which will be described in detail later, is preferably 10+cm or more and 50IllIl or less,
More preferably, it is preferable to use an interlaced nozzle having a diameter of 15111 to 4011 Il.

The effective length as used in the present invention is the length shown in t2 in Figure 3, which is the area where the yarn path through which the yarn passes is substantially surrounded by a wall surface, and where the area is This refers to the length along the yarn path where the compressed air flow actually acts effectively on the yarn.

If the effective length is less than 101!1 m, there will be many opportunities for intertwining, but the threads will not be entangled enough, resulting in weak intertwining, and the intertwining will come undone during running under high tension after exiting the nozzle. This results in low confounding, which is not preferable. If the effective length exceeds 5Qnua, it is possible to provide strong entanglement, but the entanglement bit becomes too long, which is not preferable. (This means that the number of entanglements per unit length is reduced). Further, the entanglement may unravel due to abrasion on the nozzle wall surface, resulting in low entanglement, which is not preferable.

The relationship between the interlace nozzle and the yarn path (the angle θ will be described later) is preferably 3 degrees or less, and should be as small as possible, but it is necessary to prevent the chordal vibration motions of the yarn in each nozzle from interfering with each other. No.

Note that the angle θ in the present invention is θ shown in FIG. 4, and refers to the inclination of the center line of the interlace nozzle in the longitudinal direction of the yarn path with respect to the yarn path.

If θ exceeds 3°, it is not preferable because the entanglement will be significantly unraveled due to abrasion caused by bending at the front and rear guides of the nozzle.

Incidentally, there are two types of inclace nozzles: one in which the yarn is in contact with the yarn path of the nozzle and the other in non-contact type.The h of the contact type nozzle is higher than that of the non-contact type nozzle. Although it is well known that this is the case, since the threads run in contact with each other, the structure is likely to cause fuzz. However, as mentioned above, the spinning speed was
When the speed is 00 m/min or more, it is possible to obtain a yarn that does not generate fuzz or white powder, and in the present invention, it is possible to effectively utilize a contact type interlace nozzle.

In order to more effectively prevent the generation of fuzz and white powder, it is preferable to use ceramics such as high-purity alumina, zirconium oxide, silicon carbide, or silicon nitride for the yarn path of the interlace nozzle, and to cover the entire inner peripheral wall of the yarn path. It is more preferable to use ceramics.

In addition, in order to improve the centering performance of the interlaced nozzle used in the present invention and to apply the effective action of compressed air flow to the yarn, it is necessary to provide exhaust holes and grooves for the compressed air flow in areas other than the open ends at both ends of the yarn path. It is preferable not to provide. Normally, in interlaced nozzles with a long effective length name 2, it is said that providing a discharge hole for pressurized air flow is effective in improving the entangling performance. In order to enhance the above-mentioned centering performance and effective action of compressed air flow, and to impart high entanglement to the yarn,
It has been found that it is effective not to provide a JJI outlet for compressed air flow.

Moreover, it is preferable that the incline nozzle used in the present invention has the following configuration.

(2) The inner circumferential wall of the yarn path should be parallel to the longitudinal direction and symmetrical to the plane A-A' in Fig. 3a.

(2) It has a plurality of injection holes, and the surface facing the injection holes is flat.

(2) The injection holes should be arranged so that the pressurized air flows ejected from the injection holes meet on opposing planes or before reaching the planes.

In addition, the cross-sectional shape of the thread path is triangular as shown in Figure 3a,
It is preferable that the shape is a polygon such as a quadrangle or a pentagon, a shape in which one side of a quadrilateral is replaced with an arc, or a shape consisting of a circular arc, and by making it a shape that includes such a plane,
It is possible to prevent continuous rotation of the yarn in one direction and provide sufficient opening to the yarn.

-Furthermore, as shown in Figure 3', there is a nozzle front and rear guide 13.
It is preferable that the distance t3 is (effective length t2) + (10 to 50IIIll) in order to improve the interlacing performance, and more preferably (effective length tz>+(15 to 401 + 1111).Of course, Preferably, the thread path of the nozzle front and rear guides is made of ceramics.

Furthermore, in the present invention, since the spinning tension increases as the spinning speed increases, in order to reduce the spinning tension, the distance from the spinneret surface to the first take-up roll is increased by 5 mm.
mJy is preferably below, more preferably 4IIIl or less.

The winding device of the present invention is designed to avoid applying distortion as much as possible when winding up 5000M or more of high-speed spun yarn.
Further, it is preferable to use a spindle drive type winding device that winds the film in a winding method that does not cause a difference in the winding position between the layers.

Further, it is preferable that the package be wound up in a state where the package is completely not in contact with other objects. Even if the winding device is a spindle drive type, for example, in order to control the winding speed, a roller veil that comes into contact with the package may be used, or a roller that comes into contact with the package may be used for other purposes. If there is such a thing, the package will be held down by a certain amount of blood pressure, and the wound threads will be pressed against each other, giving extra strain during winding, and at the same time, the threads will overlap the scars, making it difficult to unwind. It is not desirable because it will worsen the sex. In other words, it is preferable that the package is not brought into contact with any other object during winding. Therefore, in order to control the winding speed, it is necessary to detect the winding tension and reduce the spindle rotation speed according to the amount of winding to maintain a constant tension, or to memorize the decreasing pattern of the spindle rotation speed in advance. , program control l that reduces the number of rotations according to the winding time, etc. is applied.

In the present invention, such a spindle drive type winding device is used, and the spindle itself, on which the bobbin is attached, is caused to reciprocate, so that the yarn to be wound around the bobbin moves along its yarn path in a traverse motion. Therefore, the vehicle always travels in a substantially constant position. For this reason, there is almost no variation in the winding tension depending on the winding position of the package.
In the case of ultra-high speed winding of 00 m/min or more, since the strain imparted to the yarn is extremely small, a uniform package can be obtained.

Here, the winding device according to the present invention will be explained in detail with reference to FIG. The winding device 110 is of a spindle drive type and is driven solely by the drive motor 11. Drive motor 1
1 is controlled via a tension detector 8 that detects the winding tension and a control panel 14. A control consisting of a power controller 13 and a tension setting device 12 so that the winding tension is constant! At step 1114, the drive motor is controlled so that the winding tension is always constant.

The winding device (spindle) 10 is connected to a hydraulic cylinder 15, and the movement of the hydraulic cylinder causes the winding device 10, that is, the package 16 itself, to reciprocate. Therefore, the yarn does not reciprocate but always travels in substantially the same position and is wound into the package. The rotating package 16 is rotated without contacting anything.

The condition of the surface of the take-up roll used in the present invention in contact with the yarn is that the first take-up roll determines the spinning speed, so the yarn needs to be securely gripped by the take-up roll, and the surface is mirror-like. Preferably. It does not need to be in a mirror state as long as the yarn can be gripped. The next take-up roll is preferably one with grooves so that the yarn can be reliably gripped by the take-up roll and the yarn can be easily separated even when the yarn is wound at low tension. A mirror-like material will not easily separate the threads, and a satin-like material will cause slippage, both of which are undesirable.

[Effects of the Invention] As described above in detail, the manufacturing method of the present invention exhibits the following extremely favorable effects.

■ It is possible to provide stable and straight entanglement without fluff or thread breakage. Therefore, not only the unwinding property of the yarn from the package is good, but also the passability to higher-order processes (for example, WJL weaving) is extremely good.

■ Since the yarn can be entangled 8 degrees, a stable running yarn can be obtained without the single yarn coming loose from the yarn, and even when winding is performed at low tension, the single yarn does not reach the take-up roll. There is no single thread breakage or gold thread breakage due to reverse winding.

■ Since low tension winding is possible, a uniform package can be obtained with no difference in yarn quality between the inner layer and outer layer of the package or between the end surface and the center.

The present invention will be explained in more detail below with reference to Examples.

In the present invention, the degree of entanglement is determined by the number of entanglements on water obtained by the following measuring method.

<How to measure the number of meters above water> First, length i m, middle 10-20 cm, depth 2-3 c
Prepare a container where you can constantly supply fresh water and drain excess water. The container is then filled with water, and a small amount of fresh water is constantly supplied and a valve is used to ensure that a small amount of water overflows. (This is to prevent the oil agent adhering to the yarn from spreading on the water surface when the polyester yarn is immersed, making it difficult for the yarn to open when a new yarn is immersed next time.)

That is, this is to constantly supply new water to remove the oil film that has spread on the water surface. ) Next, the polyester yarn is unwound from the package obtained by the present invention, and 2
Measure the length of 11 by applying the weight of 0011Ig. This yarn is relaxed by 1% and floats on the water surface of the container. Next, read the number of entangled points where the yarn is substantially converged and calculate the number per 1 m.

The above measurement is repeated 10 times, and the average value is defined as the number of entanglements on water (pieces/+n).

The degree of entanglement has conventionally been determined by C
It is generally expressed as F i + ti, and in this method, a metal needle is inserted into the traveling yarn, and the yarn tension generated between the metal needle and the take-up roll is sensed with a strain gauge, and the yarn tension is measured up to the intertwining point. Since this is a method to find out the opening length of the fibers, if lζ yarns are measured under the same conditions with oils having different coefficients of friction against metals, yarns with the same degree of entanglement will have different 0F(
There is an inconvenience that li is given. Therefore, in this example, the number of entanglements on water was used as the degree of entanglement. Example 1 Polyethylene terephthalate chips containing titanium oxide were spun with [η]=0.64 using the apparatus shown in FIG. 1 with a spinning length of 3IIl at a spinning temperature of 290'C1, a spinneret with a number of discharge holes of 18 balls, and a discharge hole diameter of 0.231+11Rφ. Melt spinning J3 and winding were carried out under the conditions of level No. 1 to 5 shown in Table 1.

Note that the interlace nozzle shown in Figure 3 aSb is used, and the air pressure 6 is set to 9/cIl11 injection hole diameter (0,
The diameter was 95 mm, the effective length (J2) was 20 mm, and the nozzle front and rear guide length (f?3) was 45+am. In addition, the entire circumference of the thread path is carved with ceramics.

The results are shown in Table 1.

Table 1 1) *1 mark 1stR: 1st take-up roll 2ndR: 2nd take-up roll 2) *2 mark WJL weaving... Loom rotation speed 600 rl) II 3) Q: II is broken 0: Good Δ : Slightly inferior ×: Inferior The levels using the method of the present invention are No. 3, No. 5.

N003 was equipped with one interlacing nozzle before the first take-up roll and one after the second take-up roll, and N005 was equipped with two interlace nozzles each to perform the interlacing process. In both cases, the yarn running properties were stable, the number of entanglements on water was high, and no fuzz was observed on the package surface. Furthermore, the weavability in WJL was also excellent.

On the other hand, No. 4 used a spinning speed outside the range of the method of the present invention. In this case, there is a lot of white powder and fuzz on the inklace nozzle portion and the guide portion, resulting in poor stability. In addition, there is a lot of fluff on the surface of the package, and WJL
The weavability was also poor. Furthermore, NO, 1, No
, 2 is a method using the number of interlace nozzles outside the range Uu of the method of the present invention. No. 0.1 uses only one interlace nozzle before the first take-up roll, and No. 2 uses only one interlace nozzle after the take-up roll. In both cases, some fuzz is seen on the surface of the bag, and the number of entanglements on the water is low compared to N013 and N025.
WJL weavability was also slightly inferior.

Example 2 A test was conducted under the same conditions as in Example 1 except for the conditions shown in levels Nos. 096 to 10 in Table 2, and the results shown in Table 2 were obtained.

Table 2 1) *l mark 1stR: 1st take-up roll 2ndR: 2nd take-up roll 2) *a mark WJL weaving...II
l! Machine rotation speed 6Orpm3) ◎: Wire
O: Good △: Slightly inferior X: Poor N006, No. 7
is the level at which the nozzle inversion θ was changed, and No. 6 and No.
8 is a level at which the nozzle spacing is changed. Level N006~
Both No. 8 satisfy the present invention, but No. 006 with nozzle angle θ = 3° and nozzle spacing of 20 cl has a higher number of entanglements on water and has good fuzz on the package surface.
WJL weavability was even better and at a more preferable level.

Note that N009, No., and 10 are interlaced nozzles.
This is a level that does not satisfy the method of the present invention that was used individually. Although the fluff on the surface of the package was good, the number of entanglements on water and WJL
The weavability was slightly inferior compared to No. 6.

Example 3 A test for changing the stretch rate between take-up rolls was conducted under the same conditions as in Example 1 except for the 1c condition shown in levels No. 0.11 to 15 in Table 3.

Results of 11 to 15 were obtained.

Table 3 1) *1 mark 1stR: 11 take-up roll 2ndR: 2nd take-up roll 2) *2 mark WJL m・---・IM
Machine rotation speed 600 rpm3) ◎: Excellent 0: Good Δ: Slightly poor ×: Poor In Table 13, all standards satisfy the present invention, and the thread runnability, fluff on the package surface, and water The number of entanglements, WJL weavability, etc. were good. Among them, the WJL weavability of Nos. 12 to 14 was even better.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a preferred manufacturing apparatus used in the present invention, and FIG. 2 is a schematic diagram of a main part showing the names in FIG. 1 and an example of using two interlace nozzles for post-entangling processing. FIG. 3a is a schematic sectional view of a preferred interlaced nozzle used in the present invention, and FIG. 3 is a sectional view taken along the line AA' in FIG. 3a. FIG. 4 is a schematic view of the nozzle when it is threaded through the yarn path, and the nozzle is seen from the direction of the arrow in FIG. 3a. 1: Spinneret 2 = Cooling device 3: Oil supply device 4: Vibration propagation stopper guides 5a, 5a',
5b, 5b': Interlace nozzle 6: First take-up roll 7: Second take-up roll 8: Tension detector 9: Yarn path guide 10: Winding device 11: Drive motor 12 Tension setting device 13: Power controller 14 : Control panel 15: Hydraulic cylinder 16: Package 17: Compressed air inlet 18: Threading slit 19: Yarn path 20.20': Nozzle front and rear guide Y: Yarn patent applicant Azuma Shi Co., Ltd. Figure 1

Claims (1)

[Claims] After the polyester polymer is melt-spun and the yarn is cooled and solidified, an oil agent is applied thereto, and then, when the yarn is wound through at least two take-up roll groups, the yarn is passed between an oil agent application device and the first take-up roll group. At least one interlace nozzle is used between the take-up rolls to run the interlace nozzle, the take-up rolls are run at a constant length or under tension, and then at least one interlace nozzle is used between the take-up roll and the winding device. 1. A method for producing poly-1 stellate fiber, which is characterized by subjecting it to an interlacing treatment and producing it at a spinning speed of 500,011/min or more.