KR20050016507A - Device and method for manufacturing thread line - Google Patents

Abstract

The present invention relates to a yarn manufacturing apparatus and method. The yarn manufacturing apparatus includes a spinneret having a plurality of spinnerets having a plurality of spinnerets arranged in a straight line, and a spinneret having a filament passage formed below the spinneret at predetermined intervals and having a long side direction in an array direction of the spinnerets and a cross section having a rectangular cross section. Includes; The yarn manufacturing method is provided on both sides of the filament passage injecting the gas to the filament from the injection hole for injecting the gas obliquely downward, arranging a plurality of filaments in a row and forming an air flow directed below the filament passage Wherein the velocity of air directed below the filament passage is at least 60% of the acceptance rate of the plurality of filaments, or a plurality of filaments are sucked out of the system between the spinneret and the spinneret and discharged out of the system, thereby Even at high speed, yarns with high elongation can be provided.

Description

Yarn manufacturing method and apparatus {DEVICE AND METHOD FOR MANUFACTURING THREAD LINE}

The present invention provides a method of forming a plurality of filaments by discharging a flowable polymer from a plurality of spinning holes formed in a spinneret, and forming a plurality of filaments, and forming a filament passage that satisfies a specific airflow condition of a spinning tube installed under the spinneret. A method and apparatus for making a thread of a plurality of filaments, comprising passing through, taking over a plurality of filaments through a filament passage, and winding up a plurality of filaments.

A representative example of the polymer used in the yarn preparation method is a polyester polymer (eg, polyethylene terephthalate). Moreover, this yarn manufacturing method can be used suitably for manufacturing partial stretched yarn.

In order to produce yarns such as polyester, in particular partially drawn yarns (POY), the apparatus shown in FIG. 1 is generally used. In FIG. 1, the spinneret 1 has a plurality of spinnerets 6. Many of the filaments F discharged from the spinning hole 6 are cooled by the cooling air 3a supplied by the cooling means 3 and are solidified. A plurality of solidified filaments F are taken over by the gode roller 4 to form the thread Y. A thread Y made of a plurality of filaments F is wound around a bobbin by a winding device 5 to produce a thread thread package.

In order to improve the production efficiency of thread, it is common to test the increase of the speed of production. In the case where the apparatus shown in FIG. 1 is used, if the thread feed speed of the roller roller 4 is increased, the printing tension T acting on the filament F upstream of the roller roller 4 is increased. As a result, the elongation of the manufactured yarn Y falls. That is, for example, when yarns of polyethylene terephthalate are produced at a take-up speed of 3,000 m / min, the elongation of the yarns produced is 135%. When the takeover speed is increased to 4,000m / min, the stretch of yarn is 90%, and when the takeover speed is increased to 5,000m / min, the stretch of yarn is 65%. At high speed, the elongation of the manufactured yarn is reduced.

Moreover, in the apparatus shown in FIG. 1, the circular spinneret 1 shown in FIG. 2 is used. The spinneret 1 has a plurality of spinnerets 6. The polymer discharged from the plurality of spinning holes 6 forms a plurality of filaments F. The plurality of filaments F travels downward. The cooling air 3a is supplied only from one side with respect to the many filament F which travels. In particular, when the take-up speed is high, the amount of cooling air 3a is also increased. Therefore, the filament F shakes very much. In addition, since the distance of each of the plurality of filaments F is different from the cooling means 3, each filament F is cooled in a different state. Yarn Y consisting of a plurality of filaments F produced in this manner has irregularities of the filaments.

As described above, high production efficiency is achieved with the yarn elongation maintained at the same level as achieved at the slow take-up speed without generating any difference among the filaments constituting the yarns (without causing irregularities of the filaments). It is difficult to manufacture thread at high speed acquisition speed to achieve.

Attempts to overcome this difficulty and to obtain high-speed CS at high speed are described in US-A-5,824,248. An overview of this approach is shown in FIG. 3. The spinning apparatus shown in FIG. 3 has a cylindrical cooling means 55 under the spinneret 1 and a tube 73 having a diameter smaller than the diameter of the cylindrical cooling means 55. The cooling air 55a of the cylindrical cooling means 55 generates a downdraft in the tube 73 located downstream thereof. It is proposed to provide air flow in the tube 73 to the plurality of filaments F discharged from the plurality of spinning holes 6 of the spinneret 1.

In JP-A-08-506393, it is proposed to reduce the take-up tension T acting on the filament by adjusting the flow rate of the air flow moving in the tube at the same speed as the traveling speed of the polymer. This configuration is described as being able to stably manufacture thread even though the speed of threading is maintained at high speed.

However, in these methods, as in the apparatus shown in FIG. 1, the polymer is discharged from the plurality of spinning holes 6 formed in the spinneret 1 shown in FIG. 2, forming a plurality of filaments F. . Thus, the distance of each of the plurality of filaments F from the cylindrical cooling means 55 is different. Further, due to the diameter difference between the cylindrical cooling means 55 and the tube 73, the state of the cooling air 55a is different between the outside and the inside of the plurality of filaments. Therefore, the cooling state of the filament F which travels outside and the filament F which travels inside is different. Yarn Y consisting of a plurality of filaments F produced in this manner has irregularities of the filaments.

In JP-A-2001-262427, it is proposed to inject a heating fluid obliquely downward to a traveling filament from a heating fluid ejection hole formed around a spinning hole of a spinneret. The filaments discharged from the spinning holes are maintained at a high temperature by the flow of the heating fluid and are made thinner. In such a configuration, even if the spinning speed is increased, that is, even if the filament take-up speed is increased, high yarn thread can be obtained. In addition, when the suction means is installed downstream of the heating fluid ejection hole, the discharged filament can be made substantially thinner.

In the spinning apparatus, however, the heating fluid injected from the heating fluid ejection hole flows toward the suction means. Therefore, there is a problem that the heating medium heats the suction means. In addition, there is another problem that the heating fluid introduced into the suction means destabilizes the temperature of the air flow running in the suction means. Unstable temperature conditions affect the filaments running on the suction means. Yarn produced after this state has a filament irregularity.

In addition, since the heating fluid ejection hole is formed directly in the spinneret, the ejected heating fluid does not pass through a predetermined flow path on the discharge surface of the spinneret of the spinneret, but only opens to the space between the spinneret and the suction means. For this reason, there arises a problem that the force of the heating fluid acting on the filament is different between the center portion and the end portion of the plurality of radiation holes arranged along a straight line. The yarn made of a plurality of filaments thus prepared has irregularities of the filaments.

On the other hand, gas is generated by the polymer flow immediately after being discharged from the spinning hole of the spinneret. This gas includes low polymers of the intended polymer, ie monomers, oligomers (hereinafter, referred to as volatiles) and the like. Volatiles are deposited on and near the spinneret. This deposit causes the filament during spinning to be cut. Once the filament is cut, the spinning operation must be stopped to correct the failure and interrupt the continuous operation of the spinning process. This gas is generated not only when polyethylene terephthalate is spun, but also when other polymer is spun. In particular, polymers which are susceptible to thermal decomposition, such as polyamides, polypropylenes, aliphatic polyesters (polylactic acid, etc.) generate a large amount of gas. The deposition of volatiles due to gas generation prevents the continuous operation of the spinning process.

JP-B-50-13924 and JP-A-9-250022 disclose devices for sucking gas generated under spinnerets. This apparatus sucks gas from the side of the polymer flow (filament F) immediately after discharge from the spinning hole of the spinneret.

However, according to the suction method, when the filament F is discharged from a plurality of spinning holes 6 substantially evenly distributed in the circular spinneret 1 shown in FIG. 2, the filament F located outside Only gas in the vicinity can be sufficiently aspirated. Therefore, the gas present in the vicinity of the filament F located inside cannot be sufficiently removed. A state in which the filament F to travel is carried in the traveling direction of the filament F with gas occurs.

Even in the spinning process disclosed in US Pat. No. 5,824,248, above, gas is generated under the spinneret. In this case, however, since the cylindrical cooling means 55 keeps the area under the spinneret 1 airtight, the cooling air 55a supplied therefrom is located downstream of the gas containing the volatiles. It is conveyed toward the tube 73 and discharged from the lower end of the tube 73. Therefore, no gas remains near the spinneret surface, and deposition of deposits on the spinneret surface due to gas is unlikely to occur. Therefore, in such a spinning apparatus, it is not necessary to provide suction means as described in JP-B-50-13924 or JP-A-09-250022 described above in order to reduce contamination of the spinneret surface.

On the other hand, US-A-5,824,248 mentioned above suggests that the inner diameter of the tube should be 25 mm or more. Thus, in this spinning apparatus, because a tube having a large inner diameter is used, even if volatiles in the gas passing through adhere to the inner wall of the tube, it does not affect the filament traveling in the tube.

1 is a schematic diagram of a conventional thread production apparatus.

FIG. 2 is a schematic diagram illustrating the bottom surface of the spinneret used in the apparatus of FIG. 1. FIG.

3 is a schematic diagram of a conventional thread production apparatus different from the apparatus of FIG.

It is a schematic diagram of embodiment of the yarn manufacturing apparatus of this invention.

5A, 5B and 5D are schematic diagrams showing the bottom surface of three representative embodiments of spinnerets used in the apparatus of FIG. 5C is a front projection view of the spinneret of FIG. 5B. 5E is a front projection of the spinneret of FIG. 5D.

FIG. 6 is a schematic vertical cross-sectional view illustrating the spinning tube used in the apparatus of FIG. 4. FIG.

FIG. 7 is a schematic X-X cross-sectional view showing the spinning tube of FIG. 6.

8 is a schematic perspective view showing a partial top of the spinning tube of FIG. 4.

9 is a schematic vertical cross-sectional view showing another mode of the spinning tube of FIG. 4.

10 is a schematic vertical cross-sectional view showing the bottom of another mode of the radiation tube of FIG. 4.

FIG. 11 is a partial schematic vertical cross-sectional view showing a mode in which the outlet flow suction means is provided below the spinning tube in the apparatus of FIG. 4.

12 is a partial schematic vertical cross-sectional view showing a mode in which the rectifier is installed on the top of the spinning tube in the apparatus of FIG. 4.

FIG. 13 is a perspective view illustrating an example of a grating member installed in the rectifying part of FIG. 12. FIG.

FIG. 14 is a partial schematic perspective view showing a mode in which the airflow adjusting means is installed above the spinning tube in the apparatus of FIG. 4.

FIG. 15 is a schematic perspective view showing the temperature adjusting means installed above the spinning tube in the apparatus of FIG. 4. FIG.

16 is a schematic perspective view of another mode of the temperature adjusting means of FIG.

FIG. 17 is a partial schematic vertical cross-sectional view showing a mode in which a pressure air circulation path is added to the spinning tube in the apparatus of FIG. 4. FIG.

It is a schematic diagram which shows another embodiment of the thread manufacturing apparatus of this invention.

FIG. 19 is a schematic vertical cross sectional view showing a mode of a gas suction device used in the apparatus of FIG.

20 is a schematic vertical cross-sectional view showing another mode of the gas suction device used in the device of FIG.

FIG. 21 is a schematic vertical cross sectional view showing another mode of the gas suction device used in the apparatus of FIG.

22 is a schematic cross sectional view showing a gas suction device used in the device of FIG.

It is a schematic diagram which shows still another embodiment of the yarn manufacturing apparatus of this invention.

24 is a schematic perspective view illustrating a mode of the grating member of the rectifying part of FIG. 23.

FIG. 25 is a schematic perspective view illustrating the rectifying part of FIG. 23.

It is a schematic perspective view which shows further another embodiment of the yarn manufacturing apparatus of this invention.

FIG. 27 is a graph showing the relationship between the speed of the filament formed by the polymer discharged from the spinneret and the distance from the spinneret in the apparatus of FIG. 4.

FIG. 28 is a schematic perspective view showing the spinning tube and the emulsion supply means installed in the apparatus of FIG. 4. FIG.

It is a schematic perspective view which shows another embodiment of the yarn manufacturing apparatus of this invention.

It is a partial schematic perspective view which shows still another embodiment of the yarn manufacturing apparatus of this invention.

It is a partial schematic perspective view which shows still another embodiment of the yarn manufacturing apparatus of this invention.

32 is a schematic diagram illustrating a method for measuring a running speed of a filament.

33 is a graph showing the relationship between the speed of the filament formed by the polymer discharged from the spinneret and the distance from the spinneret in Examples 1 to 4;

34 is a graph showing the relationship between the speed of the filament formed by the polymer discharged from the spinneret and the distance from the spinneret in Comparative Examples 1 to 3. FIG.

35 is a graph showing the relationship between the speed of the filament formed by the polymer ejected from the spinneret and the distance from the spinneret in Examples 1 and 5 and Comparative Example 4. FIG.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art and to provide a method and apparatus for producing thread having no elongation and high elongation even when the speed of acquiring a plurality of filaments is increased.

The present invention,

(a) a spinneret having a plurality of spinning holes for continuously discharging the flowable polymer to form a filament;

(b) a spinning tube having a plurality of filaments formed by the plurality of spinning holes having a filament passageway running downward from the spinneret and spaced below the spinneret;

(c) emulsion supply means for supplying an emulsion to the plurality of filaments passing through the spinning tube;

(d) filament acquiring means for acquiring a plurality of filaments passed through the emulsion supply means; And

(e) A thread production method comprising a plurality of filaments using winding means for winding up a plurality of filaments having passed through the filament receiving means,

(f) spraying gas toward the plurality of filaments, obliquely downward from the outside of the plurality of filaments entering the filament passage of the spinning tube while the plurality of filaments are still fluid Can be arranged along one straight line or one circle without overlapping each other, and consequently after arranging the plurality of filaments, the injected gas is separated from the plurality of filaments in the filament passage of the spinning tube. A gas injection hole is provided which enables to form an airflow flowing downward together;

(g) the rate of airflow flowing downward together with the plurality of filaments in the filament passage of the spinning tube is 60% or more of the rate of receipt of the plurality of filaments to be taken up by the filament receiving means. to provide.

In the yarn production method of the present invention, any one of the following requirements (g) may be used instead of the above-described requirements (g).

(g) a relationship of La ≦ Lg / 2 is satisfied;

The Lg is the distance between the spinneret and the position at which the plurality of filaments are solidified to impair their fluidity and reach a pick-up speed of the plurality of filaments being picked up by the filament receiving means, and La is the spinneret and And a distance between positions where the acceleration of the plurality of filaments is greatest.

(g) A gas suction device is provided between the spinneret and the spin tube to suck gas present around the plurality of filaments and discharge the gas to the outside.

In the yarn manufacturing method of the present invention, the plurality of filaments are arranged along one straight line, the cross-sectional shape of the filament passage of the spinning tube is rectangular, and the direction of the long side of the rectangular coincides with the direction of the straight line, The relationship of dx 3≤Ex≤dx 20 is satisfied,

It is preferable that said Ex is the length of the short side of the said rectangle, and d is the diameter of the said spinning hole.

In the yarn manufacturing method of the present invention, it is preferable that the plurality of radiation holes are arranged in a straight line, and the number of the straight lines is 3 or less.

In the yarn preparation method of the present invention, the relationship La ≤ Lg / 2 is satisfied;

The Lg is the distance between the spinneret and the position at which the plurality of filaments are solidified to impair their fluidity and reach a pick-up speed of the plurality of filaments being picked up by the filament receiving means, and La is the spinneret and Preferably, the distance between the positions where the acceleration of the plurality of filaments is greatest.

In the yarn manufacturing method of the present invention, the speed of the air flow flowing downward with a plurality of filaments in the filament passage of the spinning tube is the spinneret and the traveling speed of the plurality of filaments is taken over by the filament receiving means It is preferable to be larger than the traveling speed of the plurality of filaments in the section of the distance Lg between the positions of reaching the take-up speed of the plurality of filaments.

In the yarn manufacturing method of the present invention, a gas suction and discharge means for sucking and discharging gas existing around the plurality of filaments traveling from the spinning hole toward the filament passageway between the spinning cap and the spinning tube is provided. It is preferably provided that the gas present around the plurality of filaments is sucked and discharged.

In the yarn manufacturing method of the present invention, the plurality of filaments are arranged along one straight line, the cross-sectional shape of the filament passage of the spinning tube is rectangular, and the direction of the long side of the rectangular coincides with the direction of the straight line, The relationship of Ex ≤ 10mm is satisfied,

It is preferable that said Ex is a length of a rectangular short side.

The yarn manufacturing apparatus of this invention is as follows.

(a) a spinneret having a plurality of spinning holes for continuously discharging the flowable polymer to form a filament;

(b) a spinning tube having a plurality of filaments formed by the plurality of spinning holes having a filament passageway running downward from the spinneret and spaced below the spinneret;

(c) emulsion supply means for supplying an emulsion to the plurality of filaments passing through the spinning tube;

(d) filament acquiring means for acquiring a plurality of filaments passed through the emulsion supply means; And

(e) A thread manufacturing apparatus comprising a plurality of filaments including a winding means for winding up a plurality of filaments passing through the filament receiving means,

(f) spraying gas toward the plurality of filaments, obliquely downward from the outside of the plurality of filaments entering the filament passage of the spinning tube while the plurality of filaments are still fluid Can be arranged along one straight line or one circle without overlapping each other, and consequently after arranging the plurality of filaments, the injected gas is separated from the plurality of filaments in the filament passage of the spinning tube. A gas injection hole is provided which enables to form an airflow flowing downward together;

(g) injected from the gas injection hole such that the velocity of airflow flowing downward with the plurality of filaments in the filament passageway of the spinning tube is at least 60% of the take-up speed of the plurality of filaments taken by the filament receiving means; And a means for adjusting the injection conditions of the gas or for adjusting the speed of taking up the plurality of filaments to be picked up by the filament acquiring means.

In the yarn manufacturing apparatus of the present invention, any one of the following requirements (g) may be used instead of the above-described requirements (g).

(g) a relationship of La ≦ Lg / 2 is satisfied;

The Lg is the distance between the spinneret and the position at which the plurality of filaments are solidified to impair their fluidity and reach a pick-up speed of the plurality of filaments being picked up by the filament receiving means, and La is the spinneret and And a distance between positions where the acceleration of the plurality of filaments is greatest.

(g) A gas suction device is provided between the spinneret and the spin tube to suck a gas remaining around the plurality of filaments and discharge the gas to the outside.

In the thread manufacturing apparatus of the present invention, the plurality of filaments are arranged along one straight line, the cross-sectional shape of the filament passage of the spinning tube is rectangular, the direction of the long side of the rectangular coincides with the direction of the straight line, The relationship of dx 3≤Ex≤dx 20 is satisfied,

It is preferable that said Ex is the length of the short side of the said rectangle, and d is the diameter of the said spinning hole.

In the yarn manufacturing apparatus of the present invention, it is preferable that the plurality of radiation holes are arranged in a straight line, and the number of the straight lines is 3 or less.

In the yarn manufacturing apparatus of the present invention, the relationship La ≤ Lg / 2 is satisfied;

The Lg is the distance between the spinneret and the position at which the plurality of filaments are solidified to impair their fluidity and reach a pick-up speed of the plurality of filaments being picked up by the filament receiving means, and La is the spinneret and Preferably, the distance between the positions where the acceleration of the plurality of filaments is greatest.

In the yarn manufacturing apparatus of the present invention, the speed of the airflow flowing downward together with the plurality of filaments in the filament passage of the spinning tube is the spinneret, and the traveling speed of the plurality of filaments is acquired by the filament receiving means. It is preferable to be larger than the traveling speed of the plurality of filaments in the section of the distance Lg between the positions of reaching the take-up speed of the plurality of filaments.

In the thread manufacturing apparatus of the present invention, a gas suction and discharge means for sucking and discharging gas existing around the plurality of filaments traveling from the spinning hole toward the filament passageway between the spinning cap and the spinning tube is provided. It is preferably provided that the gas present around the plurality of filaments is sucked and discharged.

In the thread manufacturing apparatus of the present invention, the plurality of filaments are arranged along one straight line, the cross-sectional shape of the filament passage of the spinning tube is rectangular, the direction of the long side of the rectangular coincides with the direction of the straight line, The relationship of Ex ≤ 10mm is satisfied,

It is preferable that said Ex is a length of a rectangular short side.

Embodiments of the present invention are further described below with reference to the drawings.

In the following embodiments, methods and apparatuses for producing polyester yarns, in particular partially drawn yarns (POY), are described.

In Fig. 4, the yarn manufacturing apparatus 10 of the present invention is fastened to the spinning block 11 of a melt spinning machine (not shown), and includes a plurality of spinning holes formed to continuously discharge the flowable polymer forming the filament ( 13) with spinnerets 12). Below the spinneret 12, a spinneret (ejector) (gas supply means) 20 is provided at intervals with respect to the spinneret 12. The spinning tube 20 has a filament passage 25 (FIG. 6), which is formed by a plurality of spinning holes 13, through which a plurality of filaments F traveling downward from the spinneret 12. Downstream of the spinning tube 20, an oil agent supply means 17 for supplying an oil agent to the plurality of filaments F passing through the filament passage 25 of the spinning tube 20 is provided. In addition, the first gode roller 14 and the second gode roller 15 constituting the filament take-up means are provided for taking over a plurality of filaments F passed through the oil supply means 17. Moreover, the winding means 16 is provided for winding up the many filament F which passed through the filament receiving means. Many filaments F are wound by bobbin 16a by winding means 16 as thread Y, and form thread thread package 16b.

The spinning tube 20 may be moved vertically by the elevating device 26 installed outside. The lifting device 26 includes a vertically rotatable post 26d provided with a ball screw 26b, a motor 26c for rotating the post 26d, and one end by rotation of the ball screw 26b. A spin tube support arm 26a is coupled to the ball screw 26b so that it can be moved vertically along 26d and the other end is coupled to the spin tube 20. The elevating device 26 is operated to adjust the distance between the lower surface of the spinneret 12 and the upper surface of the spinning tube 20 to a desired value.

FIG. 5A is a bottom view illustrating an example of the spinneret 12 used in the apparatus of FIG. 4. The spinneret 12A of FIG. 5A has a plurality of spinner holes 13 with a hole diameter of d (mm). The plurality of radiation holes 13 are arranged along the straight line Z at intervals P (mm). Six radiation holes 6 are shown in FIG. 5A. In the figure, the distance between the center of the rightmost radiation hole 13 and the center of the leftmost radiation hole 13 is indicated by reference sign dw.

FIG. 5B is a bottom view showing another example of the spinneret 12 used in the apparatus of FIG. 4. The spinneret 12B of FIG. 5B has the spinneret 13 of the spinneret 12A of FIG. 5A in two rows instead of one. The radiation holes 13 are arranged along straight lines Z1 and Z2 parallel to each other. The position of the radiation hole 13 on the straight line Z1 and the position of the radiation hole 13 on the straight line Z2 are mutually shifted in the linear direction. This state is shown in Fig. 5C as projected on the plane including the straight line direction and the direction of the vertical line of the spinneret 12B. This state is a straight line without overlapping the plurality of filaments F when gas is injected to the plurality of filaments obliquely downward from the outside of the plurality of filaments F in the spinning tube 20 to be described later. It is necessary to ensure that they are arranged along. In FIG. 5B, the center of each radiation hole 13 is located on each of the straight lines Z1 and Z2, and the arrangement of the radiation holes 13 on the straight line Z1 and the radiation holes on the straight line Z2 are illustrated. 13) is a distance perpendicular to the straight lines Z1 and Z2, and this distance is indicated by the symbol W in FIG. 5B. This distance W is the maximum distance between the array lines of the spinneret, i.e., when the radiation holes are arranged in three rows, the two outermost straight lines are selected according to the distance W.

FIG. 5D is a bottom view showing another example of the spinneret 12 used in the apparatus of FIG. 4. In the spinneret 12D of FIG. 5D, the spinneret 13 is not regularly arranged like a straight line on the spinneret surface. The radiation holes 13 are arranged inconsistently. This state is shown in Fig. 5E as projected on the plane including the straight line direction and the direction of the vertical line of the spinneret 12D. This state is a straight line without overlapping the plurality of filaments F when gas is injected to the plurality of filaments obliquely downward from the outside of the plurality of filaments F in the spinning tube 20 to be described later. It is necessary to ensure that they are arranged along. In FIG. 5D, the distance between the centers of the radiation holes 13 located at the outermost side in the width direction (direction perpendicular to the length direction) of the radiation die 12D is indicated by the reference sign (W). In this case, it is preferable that the following relationship is satisfied.

W≤1OEx

Ex is the length of the rectangular short side 21S of the cross-sectional shape of the filament channel | path 25 of the spinning tube 20 mentioned later.

As a method of arrangement of the plurality of radiation holes 13 in the spinneret 12, this is a circular arrangement, but this arrangement is not shown in Figs. 5A-5E.

When the same number of spinning holes are arranged in the spinneret, if the spinning holes are arranged in a plurality of rows, the length of the straight Z direction of the spinning tube 20 can be shortened, and the The flow rate Ef can be reduced, thereby reducing the running cost. If the spacing W of each row is very large, the discharged filament F made of a polymer bends greatly, resulting in irregular yarns produced. In view of the phenomenon that the filament F is inflated at the position just below the radiation hole 13, it is preferable to keep the spacing W between the respective columns as small as possible.

The structure of the radiation tube 20 used in the apparatus of FIG. 4 is described below with reference to FIG. 6.

The spinning tube 20 is equipped with the air inlet part 22, the air injection part 23, the steady flow part 21, and the air discharge part 24 in this order from an upstream side to a downstream side. The spinning tube 20 is discharged from the spinning hole 13 of the spinneret 12 in the range from the air inlet 22 to the air outlet 24 and travels to the filament receiving means 14. The filament passage 25 through which the filament F passes.

The air injecting section 23 is an air injecting hole 23a for injecting gas toward the plurality of filaments F at an oblique downward direction from the outside of the plurality of filaments F running on the wall surface of the filament passage 25. It is provided on both sides. The air injection hole 23a is combined with the air supply device 41 so that the compressed air 41a is supplied to the air injection hole 23a. The supplied compressed air 41a is injected into the filament passage 25 from the air injection hole 23a. This injection causes the outside air to be sucked from the top opening of the spinning tube 20 to the air inlet 22 of the filament passageway 25 to form a suction airflow. The air sucked in and the air injected from the air injection hole 23a flow in toward the downstream side of the filament passage 25 to become a constant air flow in the steady-state view 21. The airflow passing through the steady flow portion 21 is discharged from the air discharge portion 24 to the outside. The airflow injected from the air injection hole 23a causes the plurality of filaments F entering the filament passage 25 to be disposed in a straight line without overlapping each other in a direction perpendicular to the ground in FIG. The filament travels towards the emulsion means 17.

An X-X cross-sectional view of the spinning tube 20 shown in FIG. 6 is shown in FIG. 7. In FIG. 7, the cross sectional shape of the filament passage 25 is rectangular. This rectangle is maintained in the range from the inlet of the filament passage 25 at the air inlet 22 to the outlet of the filament passage 25 at the air outlet 24.

The direction of the long side 21L of the rectangle coincides with the direction in which the radiation holes 13 of the spinneret 12 are arranged side by side. Therefore, the direction of the rectangular short side 21S is a direction perpendicular to the direction in which the radiation holes 13 of the spinneret 12 are arranged side by side.

Like the cross-sectional shape of the filament passage 25, the length Ey of the rectangular long side 21L is between the outermost radiation holes 13 of the spinnerets 12, 12B or 12D shown in Figs. 5A, 5B or 5D. Only one larger than the distance dw (mm) is required. The size of each rectangle may be different between the air inlet portion 22, the air blowing portion 23, the steady flow portion 21, and the air discharge portion 24. In this case, the long sides 21L, Only the smallest lengths of 22L, 23L and 24L are required to be larger than the distance dw between the outermost radiation holes. However, it is preferable that each rectangular size is the same between the air inlet part 22, the air injection part 23, the steady flow part 21, and the air discharge part 24. As shown in FIG.

On the other hand, in order for a large number of filaments F to travel to be stably introduced into the filament passage 25, it is more preferable that the following relationship is satisfied:

Length of the long side of the rectangle (Ey) ≥ [distance between outermost radiation holes (dw) + pitch of radiation holes (P)]

Further, in order for the air injected from the air injector 23a to the filament passage 25 to efficiently act on the plurality of filaments F without waste, it is more preferable that the following relationship is satisfied:

Length of the long side of the rectangle (Ey) ≤ [distance between outermost radiation holes (dw) + pitch of radiation holes (P) x 30]

If the length Ex of the rectangular short side is very small, the filament is likely to be blocked by the filament passage 25. It is preferable that each of the short sides 21S, 22S, 23S and 24S of the air inlet 22, the air injector 23, the steady flow 21 and the air outlet 24 satisfy the following relationship:

Rectangle short side length (Ex) ≥ [diameter of radiation hole (d) × 3]

Further, in the steady flow portion 21, if the length Ex of the rectangular short side is very large, the running of the plurality of filaments F becomes unstable. Therefore, it is preferable that the following relationship is satisfied.

Rectangle short side length (Ex) ≤ [radiation hole diameter (d) x 20]

In the apparatus shown in FIG. 6, the air inlet 22 has an extension 22a. The minimum value 22w (refer FIG. 9) of the rectangular short side like the cross-sectional shape of the filament passage 25 in the air inlet part 22, and the cross-sectional shape of the filament passage 25 in the steady flow part 21 If the minimum value 21w (see Fig. 9) on the rectangular short side is set to be different from each other, the amount of air sucked from the outside of the air inlet portion 22 can be set to a desired value.

In FIG. 6, the air injecting part 23 is provided with the air injecting hole 23a for injecting air with respect to the several filament F which travels through the filament passage 25, and many filaments F are Airflow is formed to ensure that they are arranged in a straight line without overlapping each other. This air injection hole 23a has an injection angle θ with respect to the running direction of the plurality of filaments F, to ensure that the compressed air 41a flows toward the air discharge portion 24. It is preferable that the injection angle (theta) is 45 degrees or less. When the injection angle θ exceeds 45 °, the injected air can flow in through the air inlet portion 22, thereby preventing the running of the plurality of filaments F.

In order to increase the suction efficiency of the plurality of filaments F to the filament passage 25 and to reduce the size of the spinning tube 20, it is preferable that the injection angle θ is in the range of 5 ° to 15 °. In addition, although the injection hole 23a is provided in the long side of the filament passage perpendicular | vertical to the cross section shown in FIG. 7, this injection hole 23a extends the full length of the rectangular long side 21L, or FIG. It may be an arrangement of a plurality of circular holes 32a as shown in perspective view.

As shown in FIG. 9, the spinning tube 20 may also include spray blocks 23b, 23c, etc., which may be assembled and dismantled. In this configuration, for example, at the injection angle θ of the injection hole 23a, the slit width Ei (or the diameter of the circular hole) of the injection hole 23a, and the air inlet portion 22 or the steady flow portion 21 The minimum value 21w or 22w on the rectangular short side of the cross section of the filament passage 25 can be easily changed to suit the desired operating conditions.

As shown in FIG. 6, the air inlet part 22 has an extension part 22a on the uppermost side (inlet of the filament passageway 25). In this configuration, the sucked external air stream 42a formed by the compressed air 41a ejected from the injection hole 23a is smoothly formed in the filament passage 25. The extension 22a may be tapered or may be shaped like a circular trumpet.

As shown in FIG. 6, the air exhaust part 24 is provided with the expansion part 24a in the most downstream side (outlet part of the filament passageway 25). In this configuration, the compressed air 41a and the suction stream 42a from the air blowing section 23 join to form the traveling airflow 40, and after it passes through the steady flow section 21, the air exhaust section (24) At the lower end, it becomes discharge stream 43a, and is discharged | emitted from the filament path | route 25 to the outside. The expansion portion 24a may be tapered, but since the discharge flow 43a can be smoothly discharged, the expansion portion is preferably curved. In addition, as shown in Fig. 9, when the lower end of the expansion portion 24a extends to have a predetermined length 24N while maintaining a constant width 24w, the effect of diffusing the discharge stream 43a is achieved. On the other hand, the discharge stream 43a is rectified, whereby the plurality of filaments F are more stable. On the other hand, the air outlet 24 also does not have an extension 24a. That is, the wall surface of the steady flow portion 21 may extend straight down. In this configuration, the structure of the radiation tube 20 can be simplified.

When the outlet flow 43a shakes the filament at or before the emulsion supply means 17 (see FIG. 4) installed downstream of the spinning tube 20, the suction port 46 is shown in FIG. 10. It is formed in the air discharge portion 24 of the spinning tube 20, it is possible to actively exclude the discharge flow (43a) from the suction port 46 by the use of the suction blower (45). In this configuration, the discharge flow 43a can be prevented from flowing toward the downstream side of the lower end of the spinning tube 20.

As shown in FIG. 11, the outlet flow suction means 47 connected to the suction blower 45 is provided on the downstream side of the lower end of the spinning tube 20 and the emulsion supply means 17 to suck the outlet flow 43a. It can also be installed upstream of. In this case, the cross-sectional shape of the flow path of the discharge flow suction means 47 is rectangular, as is the cross-sectional shape of the filament passage 25 of the spinning tube 20, and the suction surface 44a is a plurality of running filaments F Is preferably formed on a surface parallel to the direction in which they are arranged side by side. Further, the suction port 46 is formed in the air discharge portion 24 of the spinning tube 20, as shown in FIG. 10, and in addition, the discharge flow suction means 47 is provided as shown in FIG. .

In order to rectify the suction flow 42a formed by the spinning tube 20, as shown in Fig. 12, it is preferable to provide a rectifying portion 31 having, for example, a honeycomb type lattice member. In this configuration, a suction flow 42a having a predetermined direction can be formed, and a stable air flow can be provided for the plurality of filaments F running.

The rectifying part 31 only needs to install a grating member so as to be parallel to the direction in which the plurality of filaments F traveling are arranged side by side, and the cross-sectional shape of the passage in the rectifying part 31 is the filament passage of the radiating tube 20. If it is rectangular like (25), airflow can act more uniformly with respect to the many filament F which runs. Further, one of the grating members may be installed only on one side of the long side of the arranged plurality of filaments F, but in order to more actively stabilize the running of the plurality of filaments F, the arrangement of the plurality of filaments F It is preferable to provide a lattice member on both sides.

As shown in FIG. 13, if each grating member includes two grating members 31x and 31y superimposed on each other, the size of the formed hole 31z is adjusted so that the flow rate of the suction flow 42a can be easily controlled. Can be. Further, in order to facilitate the suction flow 42a, the upper end of the air inlet 22 and the lower end of the rectifying part 31 of the spinning tube 20 are interconnected without any difference in the coupling part 29 of FIG. Preferably, the passage of the rectifying portion 31 and the filament passage 25 of the spinning tube 20 is smoothly coupled.

As shown in FIG. 14, air flow adjusting means 30 having the function of the rectifying portion 31 shown in FIG. 12 and the temperature adjusting function of the supplied air can also be installed upstream of the top of the spinning tube 20. have. The airflow adjusting means 30 is coupled to the temperature regulating air supply 33. The air 32a supplied from the temperature regulating air supply part 33 and adjusted to a desired temperature is rectified by the lattice member of the rectifying part 31 and then actively supplied to the plurality of filaments F running. Since the air adjusted to the desired temperature is supplied, the plurality of filaments F before passing through the spinning tube 20 are cooled, insulated or heated depending on the situation. In this configuration, the temperature of the plurality of filaments F can be controlled at the desired temperature.

Although the air 32a can be supplied from both sides of the traveling filament F, it is preferable that the temperature-regulated air is supplied to the plurality of filaments F from one side, while the used air is sucked from the other side. Do. In this configuration, the air flow formed in the spinning tube 20 can be individually controlled from the air flow formed by the air flow adjusting means 30. Moreover, volatiles generated from the plurality of filaments F can also be sucked for removal, and contamination of the spinning tube 20 caused by volatiles attached to the inside of the spinning tube 20 is also prevented. Can be.

As shown in FIG. 15, the temperature adjusting means 35 may also be installed upstream of the top of the spinning tube 20 to control the temperature of the plurality of filaments F. As shown in FIG. The temperature adjusting means 35 includes a block-shaped temperature adjusting pipe 37, a rectangular temperature adjusting passage 35a formed inside the temperature adjusting pipe 37, and a plurality of filaments running in the temperature adjusting passage 35a ( And a heating member 36 such as a ceramic heater provided in the long side 37a direction so as to face F). The temperature adjusting means 35 is provided with a temperature controller 38a and a thermometer 38 for controlling the temperature of the heating member 36, and as a result, the temperature of the atmosphere in the temperature adjusting passage 35a can be controlled. Can be. When the temperature adjusting means 35 is used, the heating member 36 has a surface of the long side 37a of the temperature adjusting pipe 36 and a surface of the long side 21L of the steady flow portion 21 of the spinning tube 20. A plurality of filaments (F) are installed in a direction arranged side by side to match. In addition, if the temperature adjusting passage 35a of the temperature adjusting pipe 37 through which the plurality of filaments F passes has a rectangular outlet 39a, the temperature adjusting means 35 has an external appearance as shown in FIG. And may also be cylindrical.

The airflow adjusting means 30 shown in FIG. 14 and the temperature adjusting means 35 shown in FIG. 15 are used together to control the temperature of the plurality of filaments F present upstream of the top of the spinning tube 20. do.

With respect to the rectifying part 31 and the airflow adjusting means 30 shown in FIG. 14, and the temperature adjusting means 35 shown in FIG. 15, the upper end surface and radiation of the airflow adjusting means 30 or the temperature adjusting means 35 are shown. The lower surface of the detention block 12 or of the spinning block 11 prevents outside air from passing through the gap between these means and the spinneret 12 to disturb the air flow in the internal filament passage and In order to prevent cooling, it is preferred to be interconnected to form a gas tight state.

As shown in FIG. 17, a suction port 46 (or FIG. 11) formed in the air supply device 41 of the radiation tube 20 shown in FIG. 6 and the air outlet 24 shown in FIG. 10. The outlet flow suction means 47 shown in FIG. 3) can also be interconnected and used to circulate the compressed air 41a supplied to the spinning tube 20. In this case, before the compressed air 41a is supplied to the radiation tube 20, for example, an air controller 49 for controlling the temperature and the flow rate must be installed, and the signal of the air controller 49 is, for example, compressed It should be used to adjust the opening of the valve 41y of the supply pipe 41x in the case where the air flow rate is insufficient.

As shown in FIG. 17, when the airflow adjusting means 30 is installed upstream of the upper end of the spinning tube 20, the suction port 46 (or the discharge shown in FIG. 11) of the air discharge portion 24. The air recovered from the flow suction means 47 can be supplied through the bypass pipe 48 and supplied again to the air flow adjusting means 30 as the supply air 32a.

Hereinafter, a mode in which a gas suction device is installed between the spinneret and the spinneret is described.

FIG. 18 shows a spinning device in which a gas suction device 60 is installed directly below the spinneret 12 and a spinning tube 20 spaced from the bottom surface of the gas suction device 60. In Fig. 19, the gas suction device 60 is provided between the spinneret 12 and the spinning tube 20 so as to be detachable from the spinning device. The gas suction device 60 sucks gas containing volatiles generated from a plurality of filaments F formed of polymer discharged from the spinning holes 13 of the spinneret 12.

The gas suction device 60 includes a suction buffer 61 and a gas suction port 62 made of a gas permeable grating member. Gas suction ports 62 are provided on both sides of the rows of the plurality of filaments F formed of the polymer discharged from the spinneret 12, and face the plurality of filaments F in parallel with them. A gas suction blower 63 for conveying the gas sucked from the gas suction port 62 to the outside of the apparatus is connected to the suction buffer 61 through a volatile matter collecting filter 64. Thus, gas is drawn from both sides of the heat of the plurality of filaments F. In this configuration, the shaking of the plurality of filaments F by suction can be reduced. The volatile matter collecting filter 64 removes volatile matter contained in the sucked gas, and the remaining gas is discharged from the gas suction blower 63 to the outside air 63.

If the gas suction device 60 is located on its upper surface kept as close to the lower surface of the spinneret 12 as possible, the gas can be sucked effectively. However, if the upper surface of the gas suction device 60 contacts the lower surface of the spinneret 12, the gas suction device can cool the spinneret 12. Therefore, the gap (distance between them in the vertical direction) between the lower surface of the spinneret 12 denoted by SL and the upper surface of the gas suction device 60 preferably satisfies the relationship of SL ≧ 2 mm.

The gas suction port 62 is formed in a plane parallel to the rows of the plurality of filaments F. If the gas suction port 62 is close to the heat of the plurality of filaments F, the gas suction efficiency is higher. However, if it is very close, it may occur that the plurality of filaments F are greatly shaken by the flow of gas by suction, and the plurality of filaments F are fused together. If the suction distance from the gas suction port 62 to the rows of the plurality of filaments F is PL, it is preferable to satisfy the relation of 2 mm ≤ PL ≤ 20 mm.

It is preferable to adjust the rectification of the sucked gas by using a rectifying member having a small gas flow resistance such as a honeycomb member for the gas suction port 62.

The amount of gas drawn in can be adjusted to the desired flow rate by the suction adjustment valve 65. It is preferable to measure the flow volume of both using the installed flowmeter 66, and to make the flow volume of the gas sucked by the suction port 62 of both surfaces the same. In this configuration, a plurality of filaments F can be prevented from shaking. The flow rate can be easily controlled based on the correlation between the value indicated by the negative pressure gauge 67 and the gas velocity previously measured at the gas suction port 62.

Since the traveling speed of the plurality of filaments F running just below the spinneret 12 is low, the movement speed of the gas generated from the plurality of filaments F running directly below the spinneret 12 is also small. Thus, the gas suction rate can be very slow. Although depending on the distance between the gas suction port 62 and the plurality of filaments F, the gas suction speed is preferably in the range of 5 m / min to 30 m / min. Since the traveling speed of the plurality of filaments F on the downstream side is high speed, the gas suction port 62 to ensure that the suction flow rate on the downstream side becomes higher than the suction quantity on the upstream side in the gas suction device 60. Is preferably adjusted. In this configuration, gas accompanying a plurality of running filaments F can be efficiently collected.

If the gas suction device 60 sucks the gas around the plurality of filaments F, the phenomenon that the outside air is sucked from the surroundings occurs. By this phenomenon, the incoming outside air drops the temperature around the spinneret 12, and as a result, the spinnability may be impaired.

In order to prevent this phenomenon, as shown in FIG. 20, it is preferable to provide a heat insulating plate 12L under the lower surface of the spinneret 12.

As another means, as shown in FIG. 21, it is preferable to maintain the suction buffer 61 of the gas suction device 60 spaced from the spinneret 12. This can be achieved if the top surface of the suction buffer 61 is in contact with the bottom surface of the spinning block 11 directly or indirectly through the packing 11p. As another means, for example, the gap between the bottom surface of the spinning block 11 and the top surface of the suction buffer 61 can be completely sealed by the packing 11p. In this configuration, the space between the lower surface of the spinneret 12 and the surface of the gas suction device 60 is hermetically sealed.

FIG. 22 shows the traveling direction of the plurality of filaments F when the direction perpendicular to the direction perpendicular to the lower surface of the spinneret 12 (the number of the spinnerets 13 of the spinneret 12) is arranged in a straight line. [Vertical direction] is a cross-sectional view of the suction device 60.

When the gas suction device 60 sucks the outside air from both side surfaces 62a which are open to the outside air of the gas suction port 62, the gas suction device 60 travels inside among the plurality of filaments F. It may occur more strongly that the gas located in the vicinity of the filament (F) running on both sides of the plurality of filaments (F) than the gas located around the filament (F). In this case, the plurality of manufactured filaments constituting yarns differ from each other in characteristics (irregular). In order to avoid this phenomenon, it is preferable to use the side plate 68 to seal both side surfaces 62a open to the outside air of the gas suction port 62.

In order to rectify the inflow direction with respect to the outside air which flows in from the lower surface opening of the gas suction device 60, as shown in FIG. 24, the commutation part 31 provided with the honeycomb grating member 88, respectively, It is preferable to provide between the lower surface of the suction device 60 and the surface of the spinning tube 20.

In FIG. 23, the outside air 81a flowing in from the suction space 80 forms an ascending air flow in the direction reverse to the traveling direction of the plurality of filaments F. In FIG. Due to this rising airflow, the gas flowing downward along with the plurality of filaments F traveling are collected by the gas suction device 60 toward the gas suction device 60. As a result, the inflow of gas generated in the vicinity of the spinneret 12 to the spinning tube 20 provided downstream of the gas suction device can be prevented.

If the rectifying part 31 each provided with the suction space 80 is installed between the lower end of the gas suction apparatus 60 and the upper end of the radiation tube 20, the suction flow 42a generate | occur | produced by the radiation tube 20 will be described. Is also rectified in the downstream portion in the rectifying section 31. In this configuration, suction streams 42a directed as desired can be introduced into the filament passage 25 of the spinning tube 20. Therefore, stable airflow with a low volatile matter content flows into the filament passage 25 of the spinning tube 20.

It is preferable that the rectification part 31 is provided with the grating member 88 arrange | positioned with respect to the longitudinal direction parallel to the direction in which the several filament F which runs is arranged in parallel. The cross sectional shape of the filament passageway of the rectifying portion 31 may be rectangular, such as the cross sectional shape of the filament passageway 25 of the spinning tube 20. In this configuration, the airflow can be applied more uniformly to the plurality of filaments F running.

The suction space 80 of the rectifying part 31 is preferably provided on both sides of the arrangement of the plurality of filaments F in order to stabilize the running of the plurality of filaments F more.

The grating member 88 provided in the rectifying part 31 is an arrangement surface of a plurality of filaments F (for example, an arrangement surface of a plurality of filaments F formed by a row of radiation holes indicated by a straight line Z in FIG. 5A). In the plane orthogonal to or inclined to, it is only necessary to be installed to ensure that the airflow is rectified in a direction perpendicular to the direction in which the plurality of filaments F are arranged side by side. Also, the inclination angle may vary from the top of the grating member 88 to the bottom.

FIG. 24 is a perspective view showing one of the grating members 88 used in the rectifying part 31 and the thickness 88t of the grating member 88 in the rectifying direction. If the thickness 88t in the rectifying direction is increased, the rectifying effect is increased. The grating member 88 is preferably formed to have a thickness 88t of 5 mm or more.

The rectifier 31 may be coupled to the blower 33 as shown in FIG. 25. The blower 33 actively supplies gas to the rectifying portion 31 of the suction space 80 to flow the external air 81a flowing toward the suction device 60 and the suction flow flowing toward the radiation tube 20. Assist the flow of 42a. Inert gas such as nitrogen may also be introduced, depending on the kind, state, and the like of the polymer constituting the traveling filament. Hot or cold air can be introduced to control the temperature of the air acting on the plurality of filaments F as well.

In the manufacture of thread, it is possible to break the filament. An example of a method of handling this case is described below with reference to FIG. In FIG. 26, a filament cutting sensor 96 is provided between the second roller roller 15 and the winding means 16 in order to monitor the travel passage of the thread Y. When the filament is cut, the filament cutting sensor 96 detects it and generates a filament cut detection signal. On the other hand, between the spinning tube 20 and the oil agent supply means 17, the aspirator 95 which mounts toward the traveling path of the thread Y which consists of many filaments F is attached. Aspirator 95 is connected to a waste thread blower 94. When the waste thread blower 94 is operated based on the filament cut detection signal, the aspirator 95 sucks the thread Y.

Even if the filament is cut, a plurality of filaments F continuously formed from the spinning hole 13 of the spinneret 12 run on the upstream side of the position where the cutting occurs. A plurality of filaments F continuously running from the spinneret 12 are each operated based on the filament cutting detection signal generated by the sensor 96 when the filament cutting sensor detects cutting. It is sucked and taken in by the blower 94 and the aspirator 95. The thread taken by the aspirator 95 is then discharged from the aspirator 95 and accommodated in the waste thread container 97. In this configuration, the winding of the thread Y on the first and second rollers 14 and 15 is prevented. The aspirator 95 is opened toward the air discharge portion 24 of the spinning tube 20, and a direction in which a plurality of filaments F are arranged side by side (long side direction of the filament passage 25 of the spinning tube 20). It is preferred that it can be moved horizontally.

Next, the yarn manufacturing method of the present invention will be described with reference to FIGS. 4 and 6.

The air supply device 41 injects the compressed air 41a downwardly inclined from the injection hole 23a in the filament passage 25 of the spinning tube 20. As a result, the airflow 40 traveling below the filament passage 25 is formed. The spinning tube 20 passes through the filament passages 25 of the spinning tube 20 with a plurality of filaments F made of a polymer discharged in rows from the plurality of spinning holes 13 of the spinneret 12. Is installed below the spinneret 12 in the vertical direction in such a way as to travel straight downward in the vertical direction.

In this arrangement, when the plurality of filaments F traveling reach the inlet of the filament passage 25, the suction flow 42a formed in the air inlet 22 is the filament F in the filament passage 25. The filament F is easily passed through the filament passage 25. When the elevating device 26 is operated to lower the spinning tube 20, the filament F travels stably and can be easily passed through the filament passage 25.

The flowable polymer is discharged from a plurality of spinning holes 13 arranged in rows in the spinnerets 12 provided in the spinning block 11. The discharged polymer forms a plurality of filaments F arranged according to the arrangement of the spinning holes 13. The formed plurality of filaments F is introduced into the inlet of the filament passage 25 and discharged from the outlet of the filament passage 25. The polymer constituting the plurality of filaments F loses its fluidity and solidifies while passing through the filament passage 25 of the spinning tube 20. Thereafter, the filament F discharged from the filament passage 25 is sucked by a suction gun (not shown), while the emulsion supply means 17, the first goth roller 14, and the second goth It is sequentially supplied along the roller 15 and finally wound up by the winding-up device 16. Therefore, the initial work of thread yarn Y production is completed. When the used spinning tube 20 has the suction port 46 shown in FIG. 10, the operation of the suction blower 45 connected to the suction port 46 is completed when the thread installation work to the winding device 16 is completed. And the suction blower 45 is operated after the thread installation work is completed.

Thereafter, the polymer is continuously discharged from the spinning hole 13 of the spinneret 12 to form a plurality of filaments F. As shown in FIG. From the injection hole 23a formed in the spinning tube 20 facing the filament passage 25, airflow is injected inclined downward toward the plurality of filaments F formed on both sides of the plurality of filaments F. After receiving the airflow, the plurality of filaments F are arranged in a line without overlapping each other.

Then, the arranged plurality of filaments F travels below the filament passage 25 while maintaining the arrangement. On the other hand, the airflow which is injected downward from the injection hole 23a into the filament passage 25 and contributed to the maintenance of the arrangement of the plurality of filaments F forms the downward travel airflow 40 in the filament passage 25. . In the filament passageway 25, the number of down traveling filaments F and the down traveling airflow 40 coexist. Due to the coexistence of the plurality of filaments F running in the filament passage 25 and the traveling airflow 40, the plurality of filaments F made of the polymer discharged from the spinning hole 13 are stably pulled out and refined. do. As a result, high elongation thread Y with less irregularity between filaments can be produced at high speed.

According to the yarn manufacturing method, a plurality of filaments F made of a polymer discharged from the spinning hole 13 are introduced into the filament passage 25 of the spinning tube 20 in a state where it is not yet solidified, whereby traction and It becomes delicate. Therefore, a high elongation thread can be produced which differs from the nonwoven fabric obtained by cooling and solidifying a plurality of filaments made of a polymer discharged from the spinning hole and then enduring them with airflow, and having less irregularity between the filaments.

In this thread production method, a value at which the injection speed Vs of the compressed air 41a from the injection hole 23a is higher than the take-up speed Vw of the yarn Y by the first goth roller 14. Since the speed of the air traveling with the plurality of filaments F is maintained at a higher speed than the traveling speed of the plurality of filaments F in at least a part of the filament passage 25 of the spinning tube 20 do. In this state, the traction force by the airflow flowing below the filament passage 25 acts on many filaments F. As shown in FIG.

In the thread manufacturing method, in order to generate a more preferable traction force, it is preferable that the traveling speed Ve of the traveling airflow 40 flowing through the steady flow portion 21 is maintained at a speed of 60% or more of the thread speed receiving speed Vw. desirable.

When the traveling speed Ve of the traveling airflow 40 is very high, it may adversely affect the running state of the thread Y near the emulsion supply means 17 located below the spinning tube 20. One of the adverse effects is the cutting of the filament. In order to prevent such a situation, it is preferable that the traveling speed Ve of the traveling airflow 40 is a speed of 120% or less of the take-off speed Vw of thread thread.

The filament velocity Vf of the filament F made of the polymer discharged from the spinning hole 13 at super speed Vo is gradually increased with increasing distance from the spinneret 12 in the vertical direction, The acquisition speed Vw is reached.

This relationship is shown in FIG. In the graph of FIG. 27, the distance in the vertical direction from the lower surface of the spinneret 12 is selected as the horizontal axis, and the speed of the filament F with respect to each distance in the vertical direction from the lower surface of the spinneret 12 is selected as the vertical axis. . The speed of the filament F is changed as shown by the curve A drawn in the graph of FIG. In this case, the distance from the lower surface of the spinneret 12 to the point at which the speed of the filament F reaches the take-up speed Vw of the yarn is Lg, and the slope of the curve A from the lower face of the spinneret 12 is If the distance to the largest point, i.e., the distance to the point where the acceleration of the filament F is the largest, it is preferable that the relation La? This relationship can be realized if the position of the spinneret 20 with respect to the spinneret 12, the polymer discharge condition from the spinneret 13, the condition of the traveling airflow 40, and the condition for taking over the thread are adjusted. . When the relationship La ≤ Lg / 2 is satisfied, the filament F can be refined in the region upstream of the filament passage 25. This configuration facilitates the production of the non-oriented thread Y, that is, the yarn of high elongation Y.

As shown in FIG. 12, when the rectifier 31 is installed upstream of the radiation tube 20, the flow of external air flowing from the outside to the air inlet 22 is rectified. In this configuration, the rectified suction flow 42a is formed, and in this state, for the plurality of filaments F running in heat, the suction flow 42a can be provided in the direction crossing them. This state exhibits the effect of uniformly cooling the plurality of filaments (F). Therefore, yarn Y having less irregularities of yarn can be easily manufactured.

As shown in FIG. 14, when the airflow adjusting means 30 is provided upstream of the spinning tube 20, the ambient temperature upstream of the spinning tube 20 can be actively controlled. As shown in FIG. 15, when the temperature adjusting means 35 incorporated in the temperature adjusting pipe 37 is provided upstream of the radiation tube 20, a temperature adjusting passage in which a plurality of filaments F travels. The atmosphere in 35a can be controlled by radiant heat. This makes it possible to control the temperature of the plurality of filaments F entering the spinning tube 20 to a desired temperature. This temperature control facilitates the production of yarn Y having desired physical properties.

It is preferable that the temperature of the filament F which enters the filament channel | path 25 of the spinning tube 20 is 160 degreeC or more. More preferred temperature is 200 ° C. If the temperature of the filament F is controlled to such a temperature, the injection flow rate Ef of the air injected from the air supply device 41 into the filament passage 25 can be reduced to lower the production cost of thread Y.

When the thread Y is manufactured while the filament is cut, the filament cutting sensor 96 detects the cutting of the filament as shown in FIG. 26, and the drive system from the first goth roller 14 to the winding device 16 is cut. Is stopped. At the same time, the waste thread blower 94 is operated so that the waste thread blower 95 passes through the filament passage 25 while reciprocating in a direction (horizontal direction) in which a plurality of filaments F are arranged side by side. Is sucked as waste filament F1. While the filament cutting situation is thus treated, the injection flow rate Ef of the compressed air 41a to the spinning tube 20 is preferably reduced somewhat compared to the normal flow rate.

As shown in FIG. 29, when there are a plurality of thread-manufacturing series, the first and second rollers 14 and 2 are mounted in parallel with the direction in which the spinneret 12 and the spinneret 20 are arranged side by side. 15 and the respective rotation shafts J1, J2, J3 of the winding means 16 are prevented from twisting the thread Y introduced along the first goth roller 14. This allows the thread Y to be taken over stably.

When the oil is supplied to the plurality of filaments F, the plurality of filaments F can be bound as one thread, but instead, as shown in FIG. 28, the oil supplying the long oil supply roller 17a and the oil is supplied. An emulsion supply means consisting of an emulsion application member 17b for supplying the roller 17a can also be used to supply an emulsion to each filament.

As shown in FIG. 30, the spinneret provided in the spinning block 11 is composed of a plurality of spinning holes 13, and may also have a plurality of spinning hole groups 13a arranged in one direction. As shown in FIG. 31, instead of using a single spinneret mounted on the spinneret 11, a plurality of spinnerets each having a plurality of spinnerets 13 arranged in one direction and arranged in the same direction. (12) can also be used.

In this case, the plurality of threads YY can pass through one spinning tube 20 and, moreover, along the roller 17a of one oil supply means.

In this case, in the relationship between the passage width Eyy in the longitudinal direction of the filament passage 25 of the spinning tube 20 and the passage width Ey of the one spinneret 12 described above, Eyy is (Ey) × Corresponds to the number of threads.

According to the thread production method of the present invention, the characteristics of yarn thread obtained at a conventional manufacturing speed of 3,000 m / min or 4,000 m / min can be realized even at a speed of 5,000 m / min or more. In addition, this manufacturing speed may be 6,000 m / min to 10,000 m / min even when yarns are to be obtained with similar characteristics.

The thread Y is heated in the first roller 26 and is towed between the first roller 14 and the second roller 15, and the speed of the second roller 15 is driven by the first roller. Even when faster than the speed of 14, the same effect can be obtained.

The thread production method of the present invention satisfies the quality and productivity of the obtained thread in good balance compared to the thread production method of the prior art. Therefore, the yarn manufacturing method of the present invention can be used to produce very thin yarns, for example, in which the fineness of one filament, which is difficult to control yarn quality, is 0.5 dtex or less, and can also be used to produce monofilaments.

Hereinafter, another embodiment of the yarn manufacturing method of this invention is described with reference to FIG. 6, FIG. 18, and FIG.

The gas suction blower 63 is operated to form a state in which the gas suction device 60 sucks the gas in the filament passage in the gas suction device 60. On the other hand, the air supply device 41 is driven, and the compressed air 41a from the two injection holes 23a opened to face each other in the filament passage 25 to the filament passage 25 of the spinning tube 20. Is injected, and the airflows injected from both injection holes 23a collide in the filament passage 25 to form an air flow running below the filament passage 25.

The spinning tube 20 is located below the vertical direction of the spinneret 12, so that a plurality of filaments F made of polymer discharged from the spinneret of the spinneret 12 with heat in a straight line run vertically downward, and spin It passes through the filament passage 25 of the tube 20.

In this arrangement, when a plurality of traveling filaments F reach the inlet of the filament passage 25, the suction flow 42a formed in the air inlet portion 22 causes the filament F to become the filament passage 25. The filament F is more easily passed through the filament passage 25. As the elevating device 26 is actuated to move the spinning tube 20 further down from the spinneret 12, the filament F gradually cools and solidifies, facilitating passage through the filament passage 25 , The gas near the spinneret 12 generated from the filament F is sucked into the filament passage 25 of the spinning tube 20 and discharged to the outside in a time zone before the start of normal operation (before sewing thread). . Therefore, contamination by the gas containing volatiles in the spinning tube 20 is avoided. In addition, traveling of the filament F is stabilized and the filament passage 25 can be easily passed.

The gas suction device 60 may also be coupled to the top of the spinning tube 20 so that it can be lowered or raised with the spinning tube 20. On the other hand, if the gas suction device 60 is separated from the radiation tube 20 and installed on the bottom surface of the radiation block 11 or the spinneret 12, the gap in the suction space 80 (FIG. 23) is the radiation tube 20. ) Can be easily adjusted to the desired position by raising or lowering

Then, the polymer is discharged from the spinning holes 13 arranged in rows in the spinnerets 12 provided in the spinning block 11 to form a plurality of filaments F. As shown in FIG. The formed plurality of filaments F pass through the gas suction device 60 and the filament passage 25 of the spinning tube 20. The filament F which runs is solidified between the filament passages 25 of the spinning tube 20. As a result, the solidified filament F is sucked in a suction gun (not shown) and sequentially guided along the emulsion supply means 17, the first goth roller 14, and the second goth roller 15. Finally, it is wound up by the winding-up device 16. Therefore, the initial work of thread yarn Y production is completed.

Thereafter, the polymer is continuously discharged from the spinneret 12 to form a plurality of filaments F, and the formed plurality of filaments F is maintained with their arrangements while the gas suction device 60 and the spinning tube It runs below the filament channel | path 25 of (20). In the meantime, the gas suction device 60 sucks the gas generated from the filament F. As shown in FIG. Despite this suction, the compressed air 41a injected from the injection hole 23a acts on the plurality of filaments F traveling through the filament passage 25 of the spinning tube 20, and the plurality of filaments F ) Are aligned along a straight line without overlapping each other. A large number of filaments F running in the filament passage 25 are cooled and solidified while passing through the filament passage 25. Many of the filaments F cooled and solidified are bound and are fed by the oil supply means 17. A large number of filaments F supplied with an oil agent are guided along the first roller 14 and the second roller 15 as the thread Y, and wound up on the bobbin by the winding device 16. Thus, thread Y is made into a thread package.

This thread manufacturing method satisfies the quality and productivity of thread thread with a good balance compared with the conventional thread production method. This yarn manufacturing method can also be used to produce yarns made of a plurality of filaments formed of any one of various polymers such as polypropylene and polylactic acid. This yarn production method can be used to produce very fine yarns having a fineness of 0.5 dtex or less, especially for one filament, which is difficult to control yarn quality, and can also be used to produce thick yarns such as monofilaments.

Examples and Comparative Examples of Group 1

As an example of the thread production method of the present invention, a thread production method using the thread production apparatus shown in FIG. 4 is described below, and a yarn production method using the apparatus shown in FIG. 1 is described as a comparative example. The manufacturing conditions used for the Example and the comparative example are described in each following table.

The spinning tube 20 used in Example 1 and Example 13 is shown in FIG. 6. A cross sectional view of the spinning tube 20 and its filament passage 25 is shown in FIG. 7. The cross sectional shape of the filament passage 25 is rectangular. The spinning tube 20 faces from the top to the bottom and has an air inlet 22, an air jet 23, a steady flow 21 and an air outlet 24. The air inlet 22 has an extension 22a and the air outlet 24 has an extension 24a. In the cross section of the filament passage 25 of the steady flow portion 21, the length Ex of the short side 21S is 2 mm, and the length Ey of the long side 21L is 100 mm. The injection holes 23a open to the wall surface of the filament passage 25 each have the form of slits extending over the entire length of the long side 21L of the filament passage 25. The slit width Ei (see FIG. 9) of this slit is 0.4 mm.

It is difficult to directly measure the injection speed Vs (m / min) of the compressed air 41a injected from the injection hole 23a of the air injection section 23. Accordingly, the injection flow rate Ef (m ³ / min) of the compressed air 41a supplied from the blower of the air supply device 41, the cross sectional area Ey x Ei of the passage of each injection hole 23a, and The value obtained by calculation from the supply pressure of the compressed air 41a is used as the injection speed Vs (m / min).

The traveling air flow velocity Ve (m / min) of the traveling air flow 40 flowing through the steady flow portion 21 is provided on the downstream side of the pressure pipe P1 and the air discharge portion 24 provided on the wall surface of the steady flow portion 21. Based on the differential pressure Po between the respective pressures obtained from the pressure pipe P2 provided, it is obtained from the following equation.

Ve = (2Po / ρ) ^1/2

Ρ is the air density.

The filament speed Vf (m / min) of the filament F running between the spinneret 12 and the first goth roller 14 is measured by the measuring device shown in FIG. In FIG. 32, the laser Doppler tachometer 50 is composed of a measuring head 51 and a controller 52. The measuring head 51 is moved in the running direction of the filament F, and the filament speed Vf (m / min) of the filament F running between the spinneret 12 and the first goth roller 14 is Measurements are made at all 100 mm positions from the spinneret 12. In order to measure the speed of the filament F traveling through the filament passage 25 in the radiation tube 20, the radiation tube 25 has a laser beam from the measuring head 51 when the yarn speed is measured. ) Is partially open to a portion of the spinning tube 20 corresponding to the short side 21S in one direction of the filament passage 25. When this opening affects the airflow of the filament passage 25, the opening should be stopped, and the small hole through which the laser beam for measurement passes passes the radiation corresponding to the short side 21S in one direction of the filament passage 25. It should be formed in part of the tube 20. Alternatively, a part of the radiation tube 20 corresponding to the short side 21S in one direction of the filament passage 25 is made of a material that transmits the laser beam for measurement, and the part is measured.

In FIG. 4, L1 (mm) represents the distance from the lower surface of the spinneret 12 to the upper surface of the spinneret 20, and is referred to as the spinneret position. L2 (mm) represents the total length of the spinning tube 20, and is called the spinning tube length. L3 (mm) represents the distance from the lower surface of the spinneret 12 to the emulsion supply means 17, and is called an emulsion supply position. L4 (mm) represents the distance from the lower surface of the spinneret 12 to the first roller 1, and is referred to as a take-up position. Vw (m / min) represents the take-up speed of the thread Y by the first roller 1. In FIG. 6, Es (mm) is the injection surface of the injection hole 23a of the air injection part 23 (the opening surface of the injection hole 23a in the wall surface of the filament passage 25) in the upper surface of the spinning tube 20. In FIG. Distance to the center in the vertical direction] is referred to as a slit position.

In the spinneret 12, the distance between each adjacent spinneret 13 is represented by the spinner hole pitch P (mm), and the hole diameter of the spinneret 13 on the lower surface of the spinneret 12 is the spinneret diameter. (d) (mm). The center distance between the two radiation holes that are farthest from the plurality of radiation holes 13 is represented by the distance dw (mm) between the outermost radiation holes.

Examples 1, 2, 3, and 4

The apparatus shown in FIG. 4 was used to produce polyester yarns Y each consisting of 36 filaments F having a fineness D of 135 dtex under the conditions described in Table 1. The spinneret 12 used has all of the spinning holes 13 arranged in a straight line Z, ie 36 spinning holes 13, as shown in FIG. 5A. The spinning hole pitch P is 2.5 mm and the spinning hole diameter d is 0.3 mm. The distance dw between the outermost radiation holes is 90.3 mm. In Examples 1, 2, 3 and 4, the same conditions are used except that the spinning tube position L1 is changed. Yarn preparation conditions and the properties of the obtained yarns are listed together in Table 1, later provided.

In all embodiments, the shaking of the 36 filaments F running on the upstream and downstream sides of the spinning tube 20 is small, and good spinning conditions can be observed. 36 filaments F hold | maintain the arrangement | sequence obtained immediately after discharge from the spinneret 12 in the range from the upstream side of the spinning tube 20 to the exit of the spinning tube 20, and are tied together. It was confirmed that it was passing through the spinning tube 20 without (without mutual contact).

Table 1 shows the results of thread quality evaluation of thread Y wound by the winding device. Yarn properties of Example 1 are elongation (E) of 141%, strength (T) of 2.4 g / dtex, and irregularity (U%) of yarn of 0.95. Yarn properties of Example 2 are elongation (E) of 128%, strength (T) of 2.6 g / dtex, and irregularity (U%) of yarn of 0.93. Elongation (E) of 104% of Example 3, intensity (T) of 2.8 g / dtex, and yarn irregularity (U%) of 1.00. Elongation (E) of 86% of Example 4, strength (T) of 3.0 g / dtex, and yarn irregularity (U%) of 1.13. When the spin tube 20 is further away from the spinneret 12, the elongation E of the thread yarn Y obtained becomes smaller, so that the yarn irregularity (U%) tends to be greater.

The filament velocity Vf of the running filament F is measured at all 100 mm positions from the spinneret 12, and the result is shown in FIG. In the spinneret 12, the distance to the point where the solidified filament F reaches the take over speed Vw is identified as the take over speed reach point Lg, and between two points of the largest slope of the curve formed by connecting the measuring points. The distance of is identified by the acceleration point La. The results of these points in each example are listed in Table 2, later provided.

It can be seen from FIG. 33 that the position of the acceleration point La (acceleration points La1 to La4) is shifted toward the downstream side as the value of the radiation tube position L1 increases. Moreover, it turns out that the position of each acceleration point La is located in the upstream which is half of the distance to the corresponding arrival point Lg (reach points Lg1 to Lg4). In Examples 1 to 4, each acceleration point La is 28%, 39%, 45% and 50% of the reaching point Lg. From this result, if the relation between the acceleration point La ≤ the reaching point Lg / 2 is satisfied and the ratio of the acceleration point La to the reaching point Lg is lowered, then the elongation E of the manufactured yarn Y is Found to be high.

The temperature Ti (° C.) of the filament F just above the air inlet 22 of the spinning tube 20 is measured in each embodiment using a non-contact thermometer. As for the temperature Ti of each Example, Example 1 is 215 degreeC, Example 2 is 203 degreeC, Example 3 is 184 degreeC, and Example 4 is 158 degreeC. This result means that if the value of the spinning tube position L1 becomes small, the filament at high temperature enters the spinning tube 20.

While the filament F is maintained at a high temperature, the filament F encounters compressed air 41a injected from the injection hole 23a obliquely downward in the direction of travel of the filament F, and then The filament travels below the filament passage 25 together with the traveling airflow 40 running below the filament passage 25. Coexistence of this filament F and the traveling airflow 40 causes the manufactured yarn Y to have a high elongation. The yarn Y obtained in this manner may have an elongation of at least 1.5 times the elongation of the yarn obtained in Comparative Example 1 described later.

Table 2 shows the relationship between the radiating tube range Le (mm) (range from the lower surface of the radiating detention 12 to L1 or L1 + L2) in which the radiating tube 20 exists and the traveling airflow velocity Ve. As indicated, each acceleration point La is in the radiating tube range Le in Examples 1 to 4, and the value VL of the filament speed Vf at the acceleration point La is the traveling airflow speed Ve. Is less than). This means that in at least a portion of the spinning tube 20, the pulling force of the traveling airflow 40 acts on the filament F.

Comparative Examples 1, 2 and 3

The apparatus shown in FIG. 1 is used to produce polyester yarns Y each consisting of 36 filaments F having a filament fineness D of 135 dtex under the conditions described in Table 3. In each comparative example, the spinneret 1 shown in FIG. 2 is used. This spinneret 1 has 36 spinnerets 6 arranged inside a circle having a diameter dd of 72 mm so that polymers discharged from the holes are not in contact with each other. The cooling means 3 shown in FIG. 1 moves the cooling air 3a in a direction perpendicular to the vertical direction with respect to the downward traveling filament F made of a polymer discharged from the spinning hole 6 of the spinning die 1. Supply. The filament cooling length L22 in the cooling means 3 is 1,000 mm, and the cooling air speed Vc1 of the cooling air 3a is 30 m / min. The cooling air 3a is blown from the cooling air blowing surface of the cooling means 3, crosses the filament F running, and is then sent in a direction substantially the same as the blowing direction, and discharged to the outside of the cooling means 3. . Therefore, it runs in the running direction of the filament F, and there is no dominant air flow in the filament F which runs.

In FIG. 1, L11 (mm) represents the distance from the lower surface of the spinneret 1 to the upper surface of the cooling means 3, and is called a cooling means position. Comparative Examples 1, 2, and 3 use the same conditions except that the take-over speed Vw of yarns is changed. The yarn-making conditions of these comparative examples and the properties of the yarns obtained are described together in Table 3 provided later.

In all the comparative examples, the shaking of the 36 filaments F running upstream and downstream of the cooling means 3 was small. However, it was confirmed that the filament F in which the cooling air 3a across the filament F travels in a direction substantially perpendicular to the running direction of the filament F bends. The degree of curvature varied from filament to filament in accordance with each travel position starting from the position of the arranged radiation holes 6.

The result of the thread quality evaluation of thread thread Y wound by the winding-up means 5 is shown in Table 3. The yarn characteristics of Comparative Example 1 were 65% elongation (E), 3.1 g / dtex strength (T) and 1.24 yarn yarn irregularities (U%). Yarn characteristics of Comparative Example 2 were elongation (E) of 98%, strength (T) of 2.9 g / dtex, and irregularity (U%) of yarn of 1.13. Yarn characteristics of Comparative Example 3 were elongation (E) of 119%, strength (T) of 2.7 g / dtex and irregularity (U%) of yarn of 1.05. It was confirmed that the elongation degree E of the manufactured yarn decreased, when the thread-feeding speed Vw became high speed.

Compared with Examples 1 to 4, these examples can produce a high strength yarn even when the thread take-up rate Vw is 5, OOm / min. In particular, Example 1 can manufacture thread having a higher elongation than in the case of Comparative Example 3 having a printing speed Vw of 3,500 m / min.

The filament velocity Vf of the running filament F is measured at all 100 mm positions from the spinneret 1, and the result is shown in FIG. 34. As in Example 1, the reaching point Lg and the accelerating point La are described in Table 4 provided later.

Fig. 34 shows that the increase in the acquisition speed Vw changes the position of the arrival point Lg (the arrival points Lg1x to Lg3x) and the acceleration La (the acceleration points La1x to La3x) to the downstream side. However, the positions of all the acceleration points La are located downstream, which is half of the distance to the position of the corresponding arrival point Lg, that is, the comparative example is the acceleration point La> reach point regardless of the argument velocity Vw. The relationship of (Lg) / 2 is shown.

Example 5 and Comparative Example 4

In Example 5 and Comparative Example 4, the apparatus shown in FIG. 4 is changed except that the injection flow rate Ef, the injection speed Vs, and the traveling airflow speed Ve are changed as described later in Table 5. As described in Example 1, the filament fineness (D) is used to produce polyester yarns of 36 filaments (F) each having 135 dtex. The yarn preparation conditions and the properties of yarn obtained in these Example 5 and Comparative Example 4 are described in Table 5 provided later.

In Example 5, the shaking of the 36 filaments F running in the upstream and downstream positions of the spinning tube 20 was small, and a good spinning state was observed. 36 filaments F hold the arrangement of the filaments F obtained immediately after discharge from the spinneret 12 in the range from the upstream side of the spin tube 20 to the outlet of the spin tube 20, It was confirmed that the filament F passed through the spinning tube 20 without being bound (without mutual contact). On the other hand, in Comparative Example 4, since the traction force of the traveling airflow 40 acting on the filament F is insufficient due to the decrease in the injection flow rate in the spinning tube 20, the arrangement of the filament F becomes dizzy, In particular, it was confirmed that upstream of the spinning tube 20, the filament F traveled unstable.

Table 5 shows the results of the thread quality evaluation of thread thread Y wound by the winding means 16. The yarn characteristics of Example 1 are 141% elongation (E), 2.4 g / dtex strength (T), and a jet speed (Vs) of 6,000 m / min and a traveling airflow speed (Ve) of 4,250 m / min. Irregularity (U%) of 0.95. In contrast, the yarn characteristics of Example 5 exhibited an elongation of 112% (E) and an intensity of 3.2 g / dtex at an injection speed (Vs) of 4,900 m / min and a traveling airflow speed (Ve) of 3,240 m / min. T) and irregularity (U%) of 1.01. In contrast, the yarn characteristics of Comparative Example 4 were 84% elongation (E) and 3.5 g / dtex at an injection speed (Vs) of 3,400 m / min and a traveling airflow speed (Ve) of 1,980 m / min. Intensity T and yarn irregularity (U%) of 1.34.

From these data, it can be seen that yarns having high elongation and small yarn irregularities can be obtained when the injection speed Vs and the traveling airflow speed Ve are high.

Further, it can be seen that if the injection speed Vs is higher than the acquisition speed Vw, the amount sucked into the spinning tube 20 is stabilized, and a high elongation thread of high elongation can be obtained.

On the other hand, if the take-up speed Vw is lower than the injection speed Vs, the amount sucked into the spinning tube 20 is reduced, so that the running of the filament F becomes unstable, and thus it can be seen that irregularities of yarn thread are generated. .

From these results and the results obtained in Examples 2 to 4, it is preferable to maintain the traveling airflow speed Ve, which is a speed of 60% or more of the take-up speed Vw, in order to manufacture yarn having high elongation. Able to know.

The filament velocity Vf of the running filament F is measured at all 100 mm positions from the spinneret, and the result is shown in FIG. 35. As in Example 1, the reaching point Lg and the accelerating point La of Example 5 and Comparative Example 4 are described in Table 6 provided later.

In FIG. 35, in the case of Example 5, although the position of acceleration point La (acceleration point La5) is located in the upstream side which is half of the distance to the position of arrival point Lg (reach point Lg5), In the case of the comparative example 4, the position of the acceleration point La (acceleration point La4x) is located downstream of half the distance to the position of the arrival point Lg (reach point Lg4x). The result is that if the airflow having the proper injection speed Vs and the traveling airflow speed Ve that satisfies the relationship of the acceleration point La ≤ reaching point Lg / 2 is not provided to the filament F, It indicates that good quality yarns with less yarn irregularities cannot be obtained. As can be seen from Table 6, since the acceleration point La4x is located outside the spinning tube range Le, in the comparative example 4, the traveling airflow speed Ve does not act effectively on the filament F.

Examples 6 and 7

As described in Table 7, which is provided later, 36 pieces having a filament fineness (D) of 135 dtex except that the upstream portion 21 of the spinning tube 20 extends to change the spinning tube length L2. A polyester yarn made of filament (F) was prepared as described in Example 1. On the other hand, in Example 7, the filament fineness D is 135 dtex except that the injection flow rate Ef and the injection speed Vs are adjusted so that the traveling airflow speed Ve is equal to the speed of Example 1 vertically. Polyester yarns of 36 filaments (F) were prepared as described in Example 6. The yarn preparation conditions and the properties of the yarns obtained in these examples are listed together in Table 7 provided later.

In each example, the shaking of the 36 filaments F running at the upstream and downstream positions of the spinning tube 20 was small, and a good spinning condition was observed. 36 filaments F hold the arrangement of the filaments F obtained immediately after discharge from the spinneret 12 in the range from the upstream side of the spin tube 20 to the outlet of the spin tube 20, It was confirmed that the filament F passed through the spinning tube 20 without being bound (without mutual contact).

The result of the thread quality evaluation of thread thread Y wound by the winding-up means 16 is shown in Table 7.

The yarn characteristics of the sixth embodiment were 128% elongation (E), 2.7 g / dtex strength (T) and 0.80 yarn irregularities (U%) at a traveling airflow speed Ve of 3680 m / min. . Compared with Example 1, the value of yarn irregularity (U%) is improved. However, even if the injection flow rate Ef is the same as that of the first embodiment, the pressure resistance generated by the long steady flow portion 21 lowers the traveling air flow velocity Ve and also reduces the suction flow 42a of the spinning tube 20. Since it reduces, and the total flow volume of the traveling airflow 40 is reduced, it is considered to lower the traveling airflow speed Ve and the elongation of the obtained yarn.

Yarn characteristics of Example 7 are 140% elongation (E), 2.4 g / dtex strength (T) and 0.82 yarn irregularities (U%) at a traveling airflow speed Ve of 4,200 m / min. Compared with Example 1, the elongation (E) is the same and yarn irregularities (U%) are improved. These results show that the long spinning tube length L2 can suppress the confusion of the filament F running in the spinning tube 20, and the traveling airflow speed Ve that is greater than or equal to the take-up speed Vw is the elongation of the yarn. It shows that it is a factor which can greatly improve. This effect can also be obtained by adjusting the length of the lower end 24N of the spinning tube 20 of FIG.

Examples 8, 9 and 10

The apparatus used in Example 8 has a plurality of radiation holes 13 arranged in two straight lines Z1 and Z2, as shown in FIG. 5B. The length Ey of the long side 21L of the cross section of the steady flow part 21 of the spinning tube 20 is changed to half of the Ey value of Example 1. As shown in FIG. In addition, the thread production apparatus used in Example 1 is used, except that the injection flow rate Ef and the injection speed Vs are adjusted to achieve the traveling air flow speed Ve equal to the speed of the first embodiment. Polyester yarns of 36 filaments (F) each having a filament fineness (D) of 135 dtex are produced.

In Examples 9 and 10, the filament fineness D is changed, except that the injection angle θ of the injection hole 23a of the spinning tube 20 is changed as described in Table 8 provided later. Polyester yarns of 36 filaments (F) each, 135 dtex, were prepared as described in Example 8. The yarn preparation conditions and the properties of the yarns obtained in these examples are described in Table 8 provided later.

In each example, the shaking of the 36 filaments F running at the upstream and downstream positions of the spinning tube 20 was small, and a good spinning condition was observed. 36 filaments F hold the arrangement of the filaments F obtained immediately after discharge from the spinneret 12 in the range from the upstream side of the spin tube 20 to the outlet of the spin tube 20, It was confirmed that the filament F passed through the spinning tube 20 without being bound (without mutual contact).

A thread is manufactured under the same conditions as in Example 8 except that the spinnerets used have spinnerets 13 arranged in straight lines Z1 and Z2 so that they overlap each other in the projection of the spinneret, and the evaluation of similar thread Tried. However, in this case, a phenomenon in which the filament F entering the spinning tube 20 is mutually fused at an upstream side of the spinning tube 20 has occurred. Since the filament was cut and fine hairs occurred in the thread, the thread did not reach until the evaluation was performed.

The result of the thread quality evaluation of thread thread Y wound by the winding-up means 16 is shown in Table 8. The yarn properties of Example 8 were 140% elongation (E), 2.4 g / dtex strength (T) and 0.98 yarn yarn irregularities (U%). It discovered that the yarn with the same conditions as the yarn of Example 1 was obtained. Even when the spinneret 12 has the spinneret 13 arranged in two rows, if the spinneret 13 is positioned to avoid overlapping in a direction perpendicular to each of the straight lines Z1 and Z2, the intended thread is It was confirmed that it can be produced without any problem.

If a spinneret having spinnerets 13 arranged in a plurality of rows is used, the length Ey of the long side of the filament passage 25 of the spinneret 20 can be shortened. When the spinning holes are arranged in two rows, if the number of filaments F and the fineness D are equal, the length Ey is approximately half of the length required when it is arranged in one row. In this case, the injection flow rate Ef can be reduced to reduce the production cost required for compressed air consumption.

In Examples 9 and 10, in which the injection angle θ is changed, compared with Example 8, the traveling airflow speed Ve is increased when the injection angle θ becomes sharp. If the injection angle θ becomes small, the suction flow 42a flowing from the inlet of the filament passage 25 of the spinning tube 20 is increased to increase the flow rate of the traveling airflow 40.

The characteristics of the winding thread are evaluated. The characteristics of Example 9 are the elongation (E) of 143%, the intensity (T) of 2.4 g / dtex and the yarn irregularity of 0.91, at a traveling airflow speed Ve of 4,780 m / min. The characteristics of Example 10 are the elongation (E) of 145%, the intensity (T) of 2.3 g / dtex and the yarn irregularity of 0.88 at a running air flow speed Ve of 5230 m / min. In other words, if the injection angle θ becomes small, good quality yarns having elongation above the elongation of Example 9 can be obtained.

Example 11

As shown in Fig. 12, 36 filaments F having a filament fineness D of 135 dtex except that an apparatus in which a rectifying portion 31 having a rectifying plate is installed upstream of the spinning tube 20 is used. Polyester yarns consisting of) are prepared as described in Example 1 under the conditions described in Table 9, later provided. The rectifying plate is a honeycomb lattice installed on both sides of the filament F at a position just above the air inlet 22 of the spinning tube 20. The size of each rectifier 31 is 60 mm in length Lc and 10 mm in thickness Lt. The yarn preparation conditions of Example 11 and the properties of the yarns obtained are described together in Table 9, which is provided later.

In Example 11, the shaking of the 36 filaments F running in the upstream and downstream positions of the spinning tube 20 was small, and a good spinning state was observed. 36 filaments F hold the arrangement of the filaments F obtained immediately after discharge from the spinneret 12 in the range from the upstream side of the spin tube 20 to the outlet of the spin tube 20, It was confirmed that the filament F passed through the spinning tube 20 without being bound (without mutual contact).

The yarn properties of the wound yarn (Y) were evaluated and found to be 143% elongation (E), 2.4 g / dtex strength (T) and 0.85 irregularity (U%). Compared with Example 1, since the rectifying plate rectifies the suction flow 42a, the fluctuation of the filament F on the upstream side of the spinning tube 20 becomes smaller than that in Example 1, and therefore, irregularities of yarn thread This further improvement was visually confirmed.

Examples 12 and 13

As shown in Fig. 15, a block-type temperature adjusting pipe 37 for controlling the temperature state of the filament F is provided upstream of the spinning tube 20, so that the temperature of the temperature adjusting portion in the temperature adjusting passage 35a ( Except for adjusting TH) to 250 ° C., a polyester yarn consisting of 36 filaments (F) with a filament fineness (D) of 135 dtex was prepared as described in Example 1 under the conditions set forth in Table 10, later provided. Are manufactured. The cross-sectional shape of the temperature control passage 35a of the temperature control pipe 37 is rectangular, and the length LH of the temperature control part which is the length of the filament F of the temperature control pipe 37 in the running direction is 60 mm. The ceramic heater is provided as the heating member 36 over the long side 37a direction of the rectangular temperature control passage 35a. The yarn-making conditions of these examples and the properties of the yarns obtained are described in Table 10 provided later.

In each example, the shaking of the 36 filaments F running at the upstream and downstream positions of the spinning tube 20 was small, and a good spinning condition was observed. 36 filaments F hold the arrangement of the filaments F obtained immediately after discharge from the spinneret 12 in the range from the upstream side of the spin tube 20 to the outlet of the spin tube 20, It was confirmed that the filament F passed through the spinning tube 20 without being bound (without mutual contact).

The yarn characteristics of the wound yarn Y were evaluated. The characteristics of Example 12 are the elongation (E) of 153%, the intensity (T) of 2.2 g / dtex and the irregularity (U%) of 0.95, at a running air flow speed Ve of 4250 m / min. Compared with Example 1, yarns having the same winding speed but high elongation can be obtained.

The characteristics of Example 13 were 140% elongation (E), 2.4 g / dtex intensity (T) and 0.92 thread irregularities (U%) at a running air flow speed Ve of 3,200 m / min. Even if the injection flow rate Ef is reduced, since the temperature adjusting means 35 is used, thread having the same quality can be obtained.

As in Example 12, the temperature Ti of the filament F on the upstream side of the spinning tube 20 was measured, and was 227 ° C. The temperature Ti of Example 1 was 215 ° C. as shown in Table 2, which was lower than Examples 12 and 13. This means that if the temperature of the filament F before passing through the spinning tube 20 is maintained at a high temperature, even if the traveling air flow velocity Ve in the spinning tube 20 is reduced, an equivalent elongation E can be obtained. It means that there is. Therefore, since the injection flow volume Ef can be reduced, the manufacturing cost of thread thread can be reduced.

Comparative Example 5

The apparatus used in Comparative Example 5 is the apparatus of FIG. 1 used in Comparative Example 1, and instead of the cooling means 3, the cylindrical cooling means 55, the funnel accelerator 72 and the tube shown in FIG. Cylindrical airflow formation part 70 which consists of 73 is provided, and cooling air 55a is provided in the tube 73 which generate | occur | produces the airflow 73a parallel to the running direction of filament F in tube 73 Is the same except that is passed. The cylindrical airflow forming part 70 has the following dimensions: the distance from the spinneret 1 to the cylindrical cooling means 55 (the spinneret depth) LD is 25 mm; The vertical length (cooling cylinder length) LP of the cylindrical cooling means 55 is 30 mm; The angle of the funnel accelerator 74 is 60 °; The length (acceleration length) LR in the vertical direction of the funnel accelerator is 55 mm; The length (tube length) LN of the tube 73 is 450 mm; The tube diameter d1 is 25 mm. The apparatus is the same as that of Comparative Example 1 in addition to the cylindrical airflow forming section 70.

The apparatus is used to produce a polyester yarn of 36 filaments (F) with a filament fineness (D) of 135 dtex under the conditions described in Table 11, which is provided later. Cooling air was supplied to the cylindrical cooling means 55 to obtain a cooling air speed Vc of 30 m / min. In this case, it was confirmed that the wind speed Vt in the tube 73 was 2,200 m / min. The yarn preparation conditions of Comparative Example 5 and the properties of the yarns obtained are described together in Table 11, which is provided later.

The yarn properties of the wound yarn of Comparative Example 5 were evaluated and found to be 108% elongation (E), 2.9 g / dtex strength (T) and 1.22 yarn yarn irregularities (U%).

The yarn produced in Comparative Example 5 has a larger value of irregularity (U%) of yarn than in the embodiment according to the present invention, although the value of the elongation E can be improved. The yarn manufacturing apparatus used for the comparative example 5 was found to be easy to produce irregularity of yarn.

At the exit of the tube 73, since the thread thread is turned and the filament F intersects with each other, the filament F (thread thread Y) is cluttered and unstable in running. This is because the passage through which the filament F travels has a cylindrical shape. This phenomenon does not appear in the yarn manufacturing method and apparatus of the present invention, wherein the spinneret of the spinneret is arranged along a straight line and the cross-sectional shape of the filament passage of the spinning tube is rectangular. The cooling air velocity Vc is increased to increase the air velocity Vt in the tube, but by increasing the cooling air velocity Vc, a plurality of filaments F made of the discharged polymer are bound to the center and fused together. , Argument of Y cannot be taken.

Examples and Comparative Examples of Group 2

The apparatus shown in FIG. 19 is used to make polyester yarns for evaluation. Yarn manufacturing conditions are described in Table 12 provided later. Thread production status was evaluated for 36 hours after the start of yarn production. During this time, the running state of the filament F was properly observed, and the manufactured yarn was sampled every 12 hours, and the characteristics of the yarn were evaluated. The production of yarns was stopped 36 hours after the start of production. After the production of thread was stopped, the state of the filament passage 25 in the spinning tube 20 was observed.

The spinning tube 20 used in Example 14 is shown in FIGS. 6 and 7. The cross sectional shape of the filament passage 25 is rectangular. The air inlet 22 has an extension 22a. The air outlet 24 has an extension 24a. Like the cross-sectional shape of the filament passage 25 in the steady flow portion 21, the length Ex of the rectangular short side is 2 mm, and the length Ey of the long side is 100 mm. The injection hole 23a opened in the wall surface of the filament passage 25 is formed like a slit. This slit is opened over the entire length 21L of the long side of a rectangle like the cross-sectional shape of the filament channel | path 25. As shown in FIG. The slit width Ei (see FIG. 9) of the slit is 0.4 mm.

About the suction gas velocity SV which generate | occur | produces in each gas suction port 62 of the gas suction apparatus 60, the correlation between the value indicated by the pressure gauge 67 and the obtained gas velocity is measured beforehand, Obtain the gas velocity SV. A plurality of filaments F are guided to travel downward from the center between the gas suction ports 62 provided on both sides of the filament. The distance (suction distance PL) between each gas suction part 62 and the filament F is 1/2 of the distance between the gas suction parts 62 on both sides.

For the suction space 80 provided between the gas suction device 60 and the radiation tube 20 as shown in FIG. 23, a honeycomb lattice member (thickness: 15 mm, lattice pitch: 3 mm) is used and parallel to them. It is provided on both sides of many filament F in the direction. Like the gas suction device 60, the side plate 68 is used to seal the surface in the short-term direction with respect to the outside (see FIG. 22).

In FIG. 19, SL (mm) represents the distance from the lower surface of the spinneret 12 to the upper surface of the gas suction device 60, and is called the space under the nozzle. BL (mm) shows the length of the gas suction device 60 in the vertical direction, and is called suction area. AL (mm) represents the length of the suction space 80 (refer FIG. 23) from the lower surface of the gas suction device 60 to the surface of the radiation tube 20, and is called a ventilation distance.

In FIG. 18, L1 (mm) shows the distance from the lower surface of the spinneret 12 to the upper surface of the spinneret 20, and is called a spinneret position. L2 (mm) represents the whole length of the spinning tube 20, and is called a spinning tube length. L3 (mm) represents the distance from the lower surface of the spinneret 12 to the oil agent supply means 17, and is called an oil agent supply position. L4 (mm) represents the distance from the lower surface of the spinneret 12 to the 1st gode roller 14, and is called a take-up position. Vw (m / min) represents the take-up speed of the thread thread Y by the 1st Godde roller 14, and is called a take-up speed. In FIG. 6, Es (mm) is the injection hole 23a of the air injection part 23 (the opening surface of the injection hole 23a in the wall surface of the filament passage 25) in the upper surface of the spinning tube 20. In FIG. Distance to the center of the vertical direction] is referred to as a slit position.

For the spinneret 12, the distance between the adjacent spinnerets 13 is called the spinner hole pitch P (mm), and the hole diameter d of the spinneret 13 on the lower surface of the spinneret 12 is shown. (mm) is referred to as spin hole diameter (d) (mm). The center distance between the two radiation holes that are farthest from the plurality of radiation holes 13 is referred to as the distance dw (mm) between the outermost radiation holes.

Example 14

The apparatus of FIG. 19 is used to produce a polyester yarn (PET yarn) consisting of 36 filaments (F) with a filament fineness (D) of 135 dtex under the conditions described later in Table 12. . The spinneret 12 used has all of the plurality of spinnerets arranged in a straight line Z, as shown in FIG. 5A. The radiation hole pitch P is 2.5 mm, the radiation hole diameter d is 0.3 mm, and the distance dw between the outermost radiation holes is 87.5.

Example 15 and Comparative Example 6

Example 15 and Comparative Example 6 were carried out under the same conditions except that the gas suction rate SV was changed. The yarn characteristics of the yarns sampled after a lapse of time are shown in Table 13. Characteristics of yarns evaluated were strength (T), elongation (E), yarn irregularities (U%) and fine hairs (K). In addition, Table 13 shows that the result of the inner surface of the filament passage 25 of the spinning tube 20 was observed for 36 hours after the start of thread production.

To measure the strength (T) and elongation (E), a test thread having a length of 50 mm cut from the manufactured thread (multifilament) was subjected to a tensile speed of 400 mm / min until it was cut using a general tensile tester. Stretched. In order to measure the irregularity (U%), the Uster Tester Model C from Zellweger company is used and measured in the normal mode with the thread feeding at a speed of 100 m / min. In order to measure the number of residual hairs K, a fly counter made by Toray Engineering Co., Ltd. was used to count the number of hairs at a measuring distance of 12,000 m at a speed of 400 m / min.

In each of Examples 14 and 15, the shaking of the filament F was small during the yarn production period, and good spinning was maintained. 36 filaments F maintain the arrangement of the filaments F obtained immediately after being discharged from the spinneret 12 in the range from the spinneret 12 to the outlet of the spinneret 20, and the filament F ) Was passed through the spinning tube 20 without binding (without mutual contact). The movement characteristics of the wound movements were evaluated. As shown in Table 13, in Example 14, after 12 hours, the irregularity (U%) value was 0.84 after 24 hours, after 0.88 and 36 hours, and in Example 15, after 12 hours. The irregularity (U%) value was 0.82 after 0.83 and after 24 hours, and after 0.80 and after 36 hours. As a rule, fuzz of movement was not observed. After 36 hours from the start of production of yarns, production of yarns was stopped, the spinning tube 20 was dismantled, and the adhered state of the volatiles to the filament passage 25 was examined. The adhesion of volatiles was not substantially observed, and the filament passage was less contaminated and kept in good condition.

On the other hand, in Comparative Example 6 in which the gas suction device 60 was not used for suction, the filament F entering the spinning tube 20 began to shake after 18 hours, and the shake increased after approximately 30 hours. Was observed. The yarn irregularity (U%) of the obtained yarns worsened over time. Even though there was no fuzz in the sampled yarn immediately after the start of the yarn's manufacture, the sampled yarn's fuzz increased over time. After 36 hours, the filament passage 25 of the spinning tube 20 was observed, and it was found that deposits in the form of white powder were attached in large quantities, and the air jet 23 was partially blocked. The deposit was examined by chromatography and it was confirmed that the main component was hydrooxyethyl terephthalate sublimed from polyester.

In the examples, only polyethylene terephthalate yarn (PET yarn), which is a representative polyester yarn, was used, but the polymer used in the present invention is not particularly limited. Similar effects can be obtained, for example, in the preparation of yarns of polyamide, polypropylene and aliphatic polyester (polylactic acid, etc.). It is particularly desirable to apply the yarn production methods and apparatus of the present invention to polylactic acid yarns because they generate a large amount of volatiles.

The yarn-making method and apparatus of the present invention comprise a spinneret having a plurality of spinning holes arranged in a row or in rows in a desired pitch in a straight line, and a polymer discharged from the spinning hole and traveling downward from the spinning passage. A spinning tube (ejector) having a filament passage through which heat of a plurality of filaments passes, an emulsion supply means for supplying an oil to a plurality of filaments passing through the spinning tube, an acquisition means for taking over a plurality of filaments supplied with the emulsion, and A winding means for winding up a plurality of filaments passing through the receiving means, and in the filament passage of the spinning tube, a plurality of filaments arranged in the column direction of the spinning hole and entering the filament passage from both sides of the arrangement surface of the plurality of filaments Air is injected obliquely downward toward the surface, overlapping a plurality of filaments Airflow formed by confluence of airflows which are sprayed downward obliquely from both sides and travels downward on the filament, acts on a plurality of filaments traveling below the filament passage and pulls them, before the polymer constituting the filaments solidifies. Making the filament thinner; In the thread production method, since the velocity of the air flow downward through the filament passage is 60% or more of the acceptance rate of the plurality of filaments to be taken up by the take-up means, or the gas generated from the plurality of filaments Since between the spinning tubes are sucked and discharged to the outside, the thread having a high elongation can be wound by the thread winding means even if the thread picking speed of the pick-up means is high speed. The yarns obtained have less irregularity between the filaments. Even when the width of the filament passageway is small in the direction perpendicular to the direction in which the plurality of filaments are arranged side by side, volatilization of the filament occurs because the gas generated from the plurality of filaments is sucked and discharged to the outside in the range between the spinneret and the spin tube Water can be prevented from contaminating the filament passageway having a narrow width. Thus, stable thread yarns can be produced continuously without interrupting yarn thread production.

Claims (28)

(a) a spinneret having a plurality of spinning holes for continuously discharging the flowable polymer to form a filament; (b) a spinning tube having a plurality of filaments formed by the plurality of spinning holes having a filament passageway running downward from the spinneret and spaced below the spinneret; (c) emulsion supply means for supplying an emulsion to the plurality of filaments passing through the spinning tube; (d) filament acquiring means for acquiring a plurality of filaments passed through the emulsion supply means; And (e) A yarn manufacturing method comprising a plurality of filaments using winding means for winding up a plurality of filaments passed through the filament receiving means: (f) spraying gas toward the plurality of filaments, obliquely downward from the outside of the plurality of filaments entering the filament passage of the spinning tube while the plurality of filaments are still fluid Can be arranged along one straight line or one circle without overlapping each other, and consequently after arranging the plurality of filaments, the injected gas is separated from the plurality of filaments in the filament passage of the spinning tube. A gas injection hole is provided which enables to form an airflow flowing downward together; (g) The speed of the airflow flowing downward together with the plurality of filaments in the filament passage of the spinning tube is 60% or more of the rate of receipt of the plurality of filaments to be taken up by the filament acquisition means. The method of claim 1, The plurality of filaments are arranged along a straight line, the cross-sectional shape of the filament passage of the spinning tube is rectangular, the direction of the long side of the rectangle coincides with the direction of the straight line, the relationship of dx 3 ≦ Ex ≦ dx 20 Is satisfied, Ex is the length of the short side of the said rectangle, d is the diameter of the said spinning hole, The thread manufacturing method characterized by the above-mentioned. The method of claim 2, The plurality of spinning holes are arranged in a straight line, the number of the straight line is 3 or less yarn manufacturing method characterized in that. The method of claim 1, The relationship La ≤ Lg / 2 is satisfied; Lg is the distance between the spinneret and the position where the plurality of filaments are solidified to impair their fluidity and reach a pick-up speed of the plurality of filaments being picked up by the filament receiving means, La is the spinneret, Yarn manufacturing method characterized in that the distance between the position where the acceleration of the plurality of filaments is the largest. The method of claim 4, wherein The velocity of the airflow flowing downward with the plurality of filaments in the filament passage of the spinning tube is such that the spinneret and the traveling speed of the plurality of filaments reach the taking-up speed of the plurality of filaments, which are taken over by the filament receiving means. Yarn manufacturing method, characterized in that greater than the running speed of the plurality of filaments in the section of the distance (Lg) between positions. The method of claim 1, Between the spinneret and the spinneret, gas suction and discharge means for suctioning and discharging gas existing around the plurality of filaments running toward the filament passage from the spinneret is provided, around the plurality of filaments. Thread production method characterized in that the gas present is sucked and discharged. The method of claim 6, The plurality of filaments are arranged along one straight line, the cross-sectional shape of the filament passage of the spinning tube is rectangular, the direction of the long side of the rectangle coincides with the direction of the straight line, the relationship of Ex≤10mm is satisfied, Ex is a rectangular short side length, characterized in that the yarn production method. (a) a spinneret having a plurality of spinning holes for continuously discharging the flowable polymer to form a filament; (b) a spinning tube having a plurality of filaments formed by the plurality of spinning holes having a filament passageway running downward from the spinneret and spaced below the spinneret; (c) emulsion supply means for supplying an emulsion to the plurality of filaments passing through the spinning tube; (d) filament acquiring means for acquiring a plurality of filaments passed through the emulsion supply means; And (e) A yarn manufacturing method comprising a plurality of filaments using winding means for winding up a plurality of filaments passed through the filament receiving means: (f) spraying gas toward the plurality of filaments, obliquely downward from the outside of the plurality of filaments entering the filament passage of the spinning tube while the plurality of filaments are still fluid Can be arranged along one straight line or one circle without overlapping each other, and consequently after arranging the plurality of filaments, the injected gas is separated from the plurality of filaments in the filament passage of the spinning tube. A gas injection hole is provided which enables to form an airflow flowing downward together; (g) a relationship of La ≦ Lg / 2 is satisfied; Lg is the distance between the spinneret and the position where the plurality of filaments are solidified to impair their fluidity and reach a pick-up speed of the plurality of filaments being picked up by the filament receiving means, La is the spinneret, Yarn manufacturing method characterized in that the distance between the position where the acceleration of the plurality of filaments is the largest. The method of claim 8, The speed of the air flow flowing downward with the plurality of filaments in the filament passage of the spinning tube is greater than the running speed of the plurality of filaments. (a) a spinneret having a plurality of spinning holes for continuously discharging the flowable polymer to form a filament; (b) a spinning tube having a plurality of filaments formed by the plurality of spinning holes having a filament passageway running downward from the spinneret and spaced below the spinneret; (c) emulsion supply means for supplying an emulsion to the plurality of filaments passing through the spinning tube; (d) filament acquiring means for acquiring a plurality of filaments passed through the emulsion supply means; And (e) A yarn manufacturing method comprising a plurality of filaments using winding means for winding up a plurality of filaments passed through the filament receiving means: (f) spraying gas toward the plurality of filaments, obliquely downward from the outside of the plurality of filaments entering the filament passage of the spinning tube while the plurality of filaments are still fluid Can be arranged along one straight line or one circle without overlapping each other, and consequently after arranging the plurality of filaments, the injected gas is separated from the plurality of filaments in the filament passage of the spinning tube. A gas injection hole is provided which enables to form an airflow flowing downward together; (g) A gas suction device is provided between the spinneret and the spin tube to suck gas present around the plurality of filaments and discharge the gas to the outside. The method of claim 10, The width of the filament passageway in a direction perpendicular to the direction in which the plurality of filaments are arranged side by side is at least 10 mm. The method of claim 10, The suction of the gas present around the plurality of filaments is performed on both sides of the arrangement surface of the plurality of filaments. The method of claim 10, The plurality of spinning holes are arranged in a straight line, the number of the straight line is 3 or less yarn manufacturing method characterized in that. The method of claim 10, An external air suction space is formed between the gas suction device and the spinning tube, and the sucked external air flows into the filament passage. (a) a spinneret having a plurality of spinning holes for continuously discharging the flowable polymer to form a filament; (b) a spinning tube having a plurality of filaments formed by the plurality of spinning holes having a filament passageway running downward from the spinneret and spaced below the spinneret; (c) emulsion supply means for supplying an emulsion to the plurality of filaments passing through the spinning tube; (d) filament acquiring means for acquiring a plurality of filaments passed through the emulsion supply means; And (e) A thread manufacturing apparatus comprising: a plurality of filaments having winding means for winding up a plurality of filaments passing through the filament receiving means: (f) spraying gas toward the plurality of filaments, obliquely downward from the outside of the plurality of filaments entering the filament passage of the spinning tube while the plurality of filaments are still fluid Can be arranged along one straight line or one circle without overlapping each other, and consequently after arranging the plurality of filaments, the injected gas is separated from the plurality of filaments in the filament passage of the spinning tube. A gas injection hole is provided which enables to form an airflow flowing downward together; (g) injected from the gas injection hole such that the velocity of airflow flowing downward with the plurality of filaments in the filament passageway of the spinning tube is at least 60% of the take-up speed of the plurality of filaments taken by the filament receiving means; And a means for adjusting the injection conditions of the gas or for adjusting the speed of taking up the plurality of filaments to be picked up by the filament acquiring means. The method of claim 15, The plurality of filaments are arranged along a straight line, the cross-sectional shape of the filament passage of the spinning tube is rectangular, the direction of the long side of the rectangle coincides with the direction of the straight line, the relationship of dx 3 ≦ Ex ≦ dx 20 Is satisfied, Ex is the length of the short side of the said rectangle, d is the diameter of the said spinning hole, The thread manufacturing apparatus characterized by the above-mentioned. The method of claim 16, The plurality of spinning holes are arranged in a straight line, the number of the straight line is three or less yarn manufacturing apparatus, characterized in that. The method of claim 15, Satisfies a relationship of La ≦ Lg / 2; The Lg is the distance between the spinneret and the position at which the plurality of filaments are solidified to impair their fluidity and reach a pick-up speed of the plurality of filaments being picked up by the filament receiving means, and La is the spinneret and And a distance between positions where the acceleration of the plurality of filaments is greatest. The method of claim 18, The velocity of the airflow flowing downward with the plurality of filaments in the filament passage of the spinning tube is such that the spinneret and the traveling speed of the plurality of filaments reach the taking-up speed of the plurality of filaments, which are taken over by the filament receiving means. Yarn manufacturing apparatus, characterized in that greater than the running speed of the plurality of filaments in the section of the distance (Lg) between positions. The method of claim 15, Between the spinneret and the spinneret, gas suction and discharge means for suctioning and discharging gas existing around the plurality of filaments running toward the filament passage from the spinneret is provided, around the plurality of filaments. Yarn manufacturing apparatus, characterized in that the gas present is sucked and discharged. The method of claim 20, The plurality of filaments are arranged along one straight line, the cross-sectional shape of the filament passage of the spinning tube is rectangular, the direction of the long side of the rectangle coincides with the direction of the straight line, the relationship of Ex≤10mm is satisfied, Said Ex is a length of a rectangular short side, The yarn manufacturing apparatus characterized by the above-mentioned. (a) a spinneret having a plurality of spinning holes for continuously discharging the flowable polymer to form a filament; (b) a spinning tube having a plurality of filaments formed by the plurality of spinning holes having a filament passageway running downward from the spinneret and spaced below the spinneret; (c) emulsion supply means for supplying an emulsion to the plurality of filaments passing through the spinning tube; (d) filament acquiring means for acquiring a plurality of filaments passed through the emulsion supply means; And (e) A thread manufacturing apparatus comprising: a plurality of filaments having winding means for winding up a plurality of filaments passing through the filament receiving means: (f) spraying gas toward the plurality of filaments, obliquely downward from the outside of the plurality of filaments entering the filament passage of the spinning tube while the plurality of filaments are still fluid Can be arranged along one straight line or one circle without overlapping each other, and consequently after arranging the plurality of filaments, the injected gas is separated from the plurality of filaments in the filament passage of the spinning tube. A gas injection hole is provided which enables to form an airflow flowing downward together; (g) a relationship of La ≦ Lg / 2 is satisfied; The Lg is the distance between the spinneret and the position at which the plurality of filaments are solidified to impair their fluidity and reach a pick-up speed of the plurality of filaments being picked up by the filament receiving means, and La is the spinneret and And a distance between positions where the acceleration of the plurality of filaments is greatest. The method of claim 22, The speed of the airflow flowing downward with the plurality of filaments in the filament passage of the spinning tube is greater than the running speed of the plurality of filaments. (a) a spinneret having a plurality of spinning holes for continuously discharging the flowable polymer to form a filament; (b) a spinning tube having a plurality of filaments formed by the plurality of spinning holes having a filament passageway running downward from the spinneret and spaced below the spinneret; (c) emulsion supply means for supplying an emulsion to the plurality of filaments passing through the spinning tube; (d) filament acquiring means for acquiring a plurality of filaments passed through the emulsion supply means; And (e) A thread manufacturing apparatus comprising: a plurality of filaments having winding means for winding up a plurality of filaments passing through the filament receiving means: (f) spraying gas toward the plurality of filaments, obliquely downward from the outside of the plurality of filaments entering the filament passage of the spinning tube while the plurality of filaments are still fluid Can be arranged along one straight line or one circle without overlapping each other, and consequently after arranging the plurality of filaments, the injected gas is separated from the plurality of filaments in the filament passage of the spinning tube. A gas injection hole is provided which enables to form an airflow flowing downward together; (g) A gas suction device is provided between the spinneret and the spin tube to suck a gas remaining around the plurality of filaments and discharge the gas to the outside. The method of claim 24, The width of the filament passageway in a direction perpendicular to the direction in which the plurality of filaments are arranged side by side is at least 10 mm. The method of claim 24, Suction of the gas present around the plurality of filaments is performed on both sides of the array surface of the plurality of filaments. The method of claim 24, The plurality of spinning holes are arranged in a straight line, the number of the straight line is three or less yarn manufacturing apparatus, characterized in that. The method of claim 24, An external air suction space is formed between the gas suction device and the spinning tube, and the drawn external air flows into the filament passage.