JP2003096637A - Yarn fluid treating device and method for producing yarn - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a yarn fluid treating device enabling an objective interlace treatment without generating fluff or slackening, and a method for producing the yarn. SOLUTION: The yarn fluid treating device having a nozzle plate equipped with a pair of fluid-ejection holes arranged in a crossing direction to a yarn- running direction and a collision plate arranged as opposing against the fluid- ejection holes by taking an opened gap against the nozzle plate is provided by boring the pair of the fluid-ejection holes in parallel each other or so as to gradually expand their distance by going to the tip ends of them, and also forming a recessed part extending in the yarn-running direction, and the method for producing the yarn by using the same device is also provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a yarn fluid treatment device and a yarn production method, and more particularly to a yarn fluid treatment device for imparting entanglement to a yarn and a yarn production method using the same. Regarding

[0002]

2. Description of the Related Art Techniques for imparting entanglement to a yarn using a jet of fluid are well known. This confounding is shown in FIG.
As shown in 0, for example, by applying a fluid jet flow to the unfocused yarn 101, the yarn 101 is partially opened, and the string vibration associated with the opening is generated. This is a process of forming the entangled portions 103 in which the yarns are entangled with each other on both sides.

For example, as shown in the spinning step in FIG. 11, such a treatment is performed after applying an oil agent to the plurality of yarns 112 spun from the spinneret 111 (oil agent applying means 113).
Entanglement is provided by an entanglement nozzle 114 configured as a fluid ejection nozzle. In addition, the entanglement nozzle 114 is also provided between the first roller 115 and the second roller 116 and further between the second roller 116 and the winding device 117.
Sometimes confounded by. The yarn 112 to which the entanglement is applied is wound by the winding device 117.

The above confounding nozzle is shown in FIG.
As shown in FIG. 2, the nozzle plate 118 that ejects fluid toward the running yarn 112 and the collision plate 119 that opposes the nozzle plate 118 are configured.

Various yarn fluid treatment devices having such a structure have been proposed (for example, Japanese Patent Laid-Open No. 61-194).
243, JP-A-53-111145, JP-B-47-18056, etc.), usually, for example, FIG.
As shown in FIG. 13, a cross section in the direction shown in FIG.
18 is provided with a pair of fluid ejection holes 120a and 120b, and a jet of fluid is ejected from the fluid ejection holes 120a and 120b toward the yarn 112 and the collision plate 119 so that the above-mentioned confounding is imparted. Has become.

[0006]

However, as shown in FIG. 13, most conventional confounding nozzles are provided with a pair of fluid injection holes 120a and 120b in a direction in which the distance between them gradually narrows toward the tip. Therefore, the jet flow of the ejected fluid is likely to be the direct hit flow 121 that directly hits the yarn 112. When entanglement is imparted by such a direct impact flow 121, fluff and tarmi are likely to occur on the yarn 112. Therefore, especially in a variety that does not want to generate fluff or tarmi, such as a single yarn fine denier yarn or a partially oriented undrawn yarn (sometimes abbreviated as POY), both suppression of fluff and increase in the number of entanglements are achieved. It becomes difficult to make it.

Therefore, an object of the present invention is to provide a yarn fluid treatment device and a yarn manufacturing method which enable a targeted entanglement treatment without generating fluff or tarmi.

[0008]

In order to solve the above problems, a yarn fluid treatment apparatus according to the present invention is a nozzle plate having a pair of fluid ejection holes arranged in a direction intersecting with a yarn traveling direction. And a collision plate disposed facing the fluid ejection hole with a gap open to the nozzle plate, wherein the pair of fluid ejection holes are parallel to each other, or The collision plate is formed such that the distance gradually increases toward the tip, and the collision plate is formed with a recess extending in the yarn traveling direction.

In this yarn fluid treatment device, it is preferable that the recess extends substantially through the collision plate in the yarn traveling direction. As for the shape of the concave portion, the concave portion has inclined surfaces facing each other on both sides of the virtual center plane between the pair of fluid ejection holes, and has a V-shaped cross section. Having inclined surfaces facing each other on both sides of the virtual center plane between the fluid injection holes, and having a transverse cross section formed in an arc shape, and further, a V-shaped cross section or a bottom portion of the arc cross section. Any shape such as one having a flat surface in the central portion can be adopted.

When the width of the recess in the direction perpendicular to the yarn running direction is W and the distance between the points where the extension lines of the center lines of the pair of fluid ejection holes intersect the collision plate is P, P < It is preferable that W is satisfied. When P ≧ W, half or more of the jet flow from the fluid jet hole flows to the outside of the recess, and the yarn may jump out.

When the distance between the points where the extension lines of the hole center lines of the pair of fluid ejecting holes intersect the collision plate is P and the hole diameter of each fluid ejecting hole is d, 1.5 ≦ P / d ≦ It is preferable that 6 is satisfied. By doing so, as shown in the test results described below, both the number of entanglements and the fluff can be set within a satisfactory range.

Further, when the width of the recess in the direction perpendicular to the yarn running direction is W and the depth of the recess is b, it is preferable that 0.05 ≦ b / W ≦ 0.6 is satisfied. . By doing so, as shown in the test results described below, both the number of entanglements and the fluff can be set within a satisfactory range.

The method for producing a yarn according to the present invention comprises a method characterized in that the yarn fluid treatment apparatus as described above is used to impart entanglement to the yarn.

In the yarn fluid treatment device according to the present invention, since the intersecting angles of the fluid injection holes are set to be parallel or more, it is possible to appropriately avoid the jet flow from the fluid injection holes from directly hitting the yarn, and In general, the indirect flow reflected by the jet flow hitting the concave portion of the collision plate is applied, and the entanglement is imparted by the fiber opening action of the indirect flow. By using the indirect flow rather than the direct impact flow, the strength of the flow striking the yarn itself is appropriately weakened and the generation of fluff and tarmi is suppressed.
Then, by setting the dimensional relationship of each part within an appropriate range as described above, it becomes possible to impart a desired entanglement to the yarn. As a result, while suppressing the generation of fluff and tarumi,
The target confounding can be given.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described below with reference to the drawings. Figure 1
1 shows a cross section perpendicular to a yarn traveling direction of a yarn fluid treatment device according to an embodiment of the present invention. Thread fluid treatment device 1
Is a nozzle plate 4 provided with a pair of fluid ejection holes 3a, 3b arranged in a direction intersecting the traveling direction of the yarn 2, and a fluid ejection is performed with respect to the nozzle plate 4 with an open gap 5 left therebetween. It has a collision plate 6 arranged to face the holes 3a and 3b.
It should be noted that the yarn traveling direction and the pair of fluid ejection holes 3a, 3b may intersect with each other to such an extent that they do not cause quality deterioration such as yarn ejection, yarn breakage, or entanglement failure that hinders the yarn traveling.

In this embodiment, the pair of fluid ejection holes 3a and 3b are formed in parallel with each other. The striking plate has slanted surfaces 8a and 8b facing each other on both sides of the virtual center plane 7 between the pair of fluid ejection holes 3a and 3b.
A recess 9 extending in the traveling direction of is formed. That is,
In this embodiment, the recess 9 is formed as a groove having a V-shaped cross section. Further, in the present embodiment, the concave portion 9 extends through the collision plate 6 in the yarn traveling direction, but it may be configured to partially extend without penetrating.

In such a yarn fluid treatment apparatus 1, as shown in FIG. 1, the jets 10a, 10b of the fluid jetted from the pair of fluid jet holes 3a, 3b are substantially
Do not hit the yarn 2 directly, first of all the inclined surfaces 8a, 8b of the recess 9
And is reflected there to become indirect flows 11a and 11b, and these indirect flows 11a and 11b are used for opening the yarn 2 and imparting confounding by string vibration accompanying the opening. Compared to the case of the direct hit flow as shown in FIG. 13 described above, the entanglement process is performed by the appropriately weakened indirect flow, so that the generation of fluffs and lumps is suppressed, and the desired entanglement is smoothly performed.

In the yarn fluid treatment device 1, in order to keep the number of entanglements above the target value and suppress the number of fluff generation below the target value, the following dimensional relationships are preferable. As shown in FIG. 2, the width of the recess 9 in the direction perpendicular to the yarn running direction is W, and the distance between the points where the extension lines of the center lines of the pair of fluid ejection holes 3a and 3b intersect the collision plate 6 is P. , Where P is the diameter of each of the fluid ejection holes 3a and 3b and b is the depth of the recesses, P <W 1.5 ≦ P / d ≦ 6 0.05 ≦ b / W ≦ 0.6 is satisfied. It is preferable. In addition, G in FIG. 2 indicates a gap between the nozzle plate 4 and the collision plate 6.

In the present invention, the pair of fluid ejection holes may be formed in parallel with each other as shown in FIGS. 1 and 2, and for example, as shown in FIG.
The pair of fluid ejection holes 22a and 22b may be formed such that the gap gradually widens toward the tip of the holes. That is, the holes may be formed in parallel or more. By doing so, a desired indirect flow as shown in FIG. 1 can be obtained. Also in the mode shown in FIG. 3, it is preferable that the relationship of P <W 1.5 ≦ P / d ≦ 6 0.05 ≦ b / W ≦ 0.6 is satisfied. In this case, P is the distance between the points where the extension lines of the hole center lines of the pair of fluid ejection holes 22 a and 22 b intersect the collision plate 6.

Further, in the present invention, the cross-sectional shape of the recess formed in the collision plate is not limited to the V-shape as described above, and for example, as shown in FIG. 4, the recess having an arc-shaped cross-section. The collision plate 32 may be formed with 31. Further, as shown in FIG. 5, it is also possible to use a collision plate 43 in which a flat portion 42 having an appropriate width is formed at the center of the bottom of the recess 41 having a V-shaped or arcuate cross section.

Of the above-mentioned optimum dimensional relationships, P <W 1.5 ≦ P / d ≦ 6 0.05 ≦ b / W ≦ 0.6, 1.5 ≦ P / d ≦ 6 0.05 ≦ b In order to confirm /W≦0.6, the yarn fluid treatment apparatus 1 shown in FIGS. 1 and 2 was used to perform a test in which the dimensions of each part were changed.

Examination of P / d: As shown in Tables 1 and 2,
The number of entanglements (pieces / m) and the number of fluffs (pieces / 10 ⁷ m) were measured when P and P / d were variously changed. The measurement results are shown in FIGS.

The measuring method was carried out under the following conditions. (1) Variety: Tetron POY yarn; 167 decitex 4
8 filament yarn speed; 3000 m / min (2) Conditions: pressure; 0.4 MPa yarn tension; 15 g (3) Evaluation method (A) Entanglement number measuring device manufacturer; Rothschid company (Rothschid company, Switzerland) Name: Entanglement tester (Entanglement T
ester) Type; Type R2072 Measurement condition pretension; Tp = 0.9D _TX / 5 trip tension; Tt = {(0.9 D _TX / 5) + (0.
9 D _TX / n)} D _TX = yarn fineness (decitex), n = single yarn number (B) fluff number measuring instrument manufacturer; Toray Engineering Co., Ltd. name; fluff counting device model type; DT-105 measuring condition detector; F type detector fluff length; 2 mm

[0024]

[Table 1]

[0025]

[Table 2]

As shown in FIGS. 6 and 7, with respect to the number of confounding, good results of 15 / m or more were obtained when P / d was in the range of 1.5 to 6. As for the fluff number, four / 10 ⁷ m or less satisfactory results have been obtained in the range P / d is 6 or less.

Examination of b / W: As shown in Tables 3 and 4,
The number of entanglements (pieces / m) and the number of fluffs (pieces / 10 ⁷ m) when variously changing b and b / W were measured. The measurement results are shown in FIGS.

As shown in FIGS. 8 and 9, with respect to the number of confounding, good results of 15 / m or more were obtained when b / W was in the range of 0.05 to 0.6. Also, regarding the number of fluffs, b
Good results of 4 pieces / 10 ⁷ m or less were obtained when / W was 0.6 or less.

[0029]

[Figure 3]

[0030]

[Figure 4]

[0031]

As described above, according to the yarn fluid treatment device of the present invention, the confounding treatment can be performed by the indirect flow rather than the direct impact flow, so that no fluff or tarmi is generated. A target confounding process can be performed.

Further, according to the method for producing a yarn using this yarn fluid treatment device, a desired entanglement can be smoothly carried out even with respect to varieties such as POY and single fine denier yarn which do not like fluff or tarmi. Can be granted.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a yarn fluid treatment device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing the dimensions of each part of the yarn fluid treatment device of FIG.

FIG. 3 is a cross-sectional view of a yarn fluid treatment device according to another embodiment of the present invention.

FIG. 4 is a cross-sectional view of a collision plate according to still another embodiment of the present invention.

FIG. 5 is a cross-sectional view of an impact plate according to still another embodiment of the present invention.

FIG. 6 is a relationship diagram between P / d and the number of confounding showing test results.

FIG. 7 is a relationship diagram between P / d and the number of fluffs showing test results.

FIG. 8 is a relationship diagram between b / W and the number of confounding showing a test result.

FIG. 9 is a relationship diagram between b / W and the number of fluffs showing test results.

FIG. 10 is an explanatory diagram showing an operation of providing confounding.

FIG. 11 is a schematic configuration diagram of a spinning process showing the installation position of the entanglement nozzle.

FIG. 12 is a schematic perspective view of a conventional confounding nozzle.

13 is a cross-sectional view of the confounding nozzle of FIG.

[Explanation of symbols]

1 Thread fluid treatment device 2 yarn 3a, 3b, 22a, 22b Fluid injection holes 4,21 Nozzle plate 5 Gap 6, 32, 43 Collision plate 7 Virtual center plane 8a, 8b inclined surface 9, 31, 41 recess 10a, 10b jet 11a, 11b Indirect flow 42 Plane

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Satoru Taki             1-1 1-1 Sonoyama, Otsu City, Shiga Prefecture Toray Co., Ltd.             Ceremony company Shiga business site F-term (reference) 4L036 AA01 PA42

Claims (9)

[Claims] 1. A nozzle plate having a pair of fluid ejecting holes arranged in a direction intersecting with a yarn traveling direction, and a nozzle plate which is opposed to the fluid ejecting hole with a gap open to the nozzle plate. A yarn fluid treatment device having a collision plate, wherein the pair of fluid ejection holes are bored in parallel with each other, or so that the distance gradually increases toward the tip,
The yarn fluid treatment device is characterized in that the collision plate is formed with a recess extending in the yarn traveling direction. 2. The yarn fluid treatment device according to claim 1, wherein the recess substantially penetrates the collision plate in a yarn traveling direction. 3. The recessed portion has inclined surfaces facing each other on both sides of an imaginary center plane between the pair of fluid ejection holes, and has a V-shaped cross section. The described yarn fluid treatment device. 4. The recessed portion has inclined surfaces facing each other on both sides of an imaginary center plane between the pair of fluid ejection holes, and has a transverse cross section formed in an arc shape. The yarn fluid treatment device according to 2. 5. The yarn fluid treatment device according to claim 3 or 4, wherein a flat surface is formed at the center of the bottom of the V-shaped cross section or the arc-shaped cross section. 6. When the width of the recess in the direction perpendicular to the yarn traveling direction is W, and the distance between the points where the extension lines of the hole centerlines of the pair of fluid ejection holes intersect the collision plate is P, The yarn fluid treatment device according to any one of claims 1 to 5, which satisfies P <W. 7. When the distance between the points where the extension lines of the hole center lines of the pair of fluid ejection holes intersect the collision plate is P and the hole diameter of each fluid ejection hole is d, 1.5 ≦ P / d The yarn fluid treatment device according to any one of claims 1 to 6, which satisfies ≦ 6. 8. When the width of the recess in the direction perpendicular to the yarn running direction is W and the depth of the recess is b, 0.05 ≦ b / W ≦ 0.6 is satisfied. The yarn fluid treatment device according to any one of 1 to 7. 9. A method of manufacturing a yarn, wherein the yarn fluid treatment device according to any one of claims 1 to 8 is used to impart entanglement to the yarn.