JP2011195995A - Device for interlace-treating yarn and method of interlace-treating - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device of interlace-treatment and method of interlace-treatment, suitable for producing a new interlaced yarn in a high speed-treated synthetic fiber multi-filament on forming multi-filament accompanied with the formation of small fineness single fibers.SOLUTION: In this device of interlace-treatment having a pair of fluid-ejection holes for giving the interlace to yarns, an opening surface having the fluid-ejection holes opened thereon and having a perpendicular direction to the extending direction of the fluid-ejection holes, a yarn-treating part as a recessed part where the yarn travels as opposing to the opening surface, and a slit part for introducing the yarns into the yarn-treating part; the pair of fluid-ejection holes are bored in parallel with each other at the cross section perpendicular to the traveling direction of the yarns; the yarn passage depth of the yarn-treating part provided by the recessed part including the slit part is constituted as larger than the yarn passage width of the yarn-treating part; and the shape of a ridge line forming the outline of the recessed part of the yarn-treating part is formed so that the tangent line angle θ made by a tangent line for contacting a ridge line with an axial line of the fluid-ejection holes becomes a constant or continuously increases from ≥0° angle to 90° as going from both the end parts of the recessed part of the yarn-treating part to the deepest point G of the recessed part.

Description

  The present invention relates to a entanglement processing apparatus and a entanglement processing method for synthetic fiber yarns.

  Conventionally, in a manufacturing process of a synthetic fiber multifilament yarn that is melt-spun, in order to give the multifilament yarn a converging property, a fluid is sprayed onto the multifilament yarn that runs on a yarn running path of an entanglement processing device, A process is performed in which single yarn filaments constituting the filament yarn are entangled and entangled with each other. This entanglement treatment is originally performed in order to improve the handleability by giving the synthetic fiber multifilament yarn melt-spun without being bundled.

  This entanglement process has been studied in a uniform, uniform and efficient manner in recent years as the melt spinning speed of synthetic fibers has increased significantly and the number of filaments has increased (the number of filaments has increased). (Patent Documents 1 and 2).

  The proposal made in this patent document 1 avoids direct hit of the jet stream on the yarn indirectly by causing the fluid jetted from the fluid jet holes to collide with the opposing wall surface and then acting on the yarn for confounding processing. By acting on the yarn, damage to the yarn due to the entanglement treatment is reduced, and the aim is to suppress fluff and loosening.

  In addition, the proposal made in Patent Document 2 relates to the optimization of the position of the yarn path defining guide provided upstream and downstream of the entanglement processing device.

  However, in the proposals made in Patent Documents 1 and 2, the target level is premised on the high speed, but as shown in the examples, the number of filaments is 50 or less, and the single yarn fineness is at most. (Thickness of single filament) is 3.0 dtex or more (paragraph 0023 of Patent Document 1 and Paragraph 0034 of Patent Document 2), which is sufficient for increasing the number of filaments (increasing the number of filaments) in recent years. In particular, the formation of multiple yarns with finer fineness (for example, 100 filaments or more, single yarn fineness of 2.0 dtex or less (generally about 0.1 to 2.0 dtex, More practically about 0.6 to 1.5 decitex))) and was not sufficient for those requiring high-speed processing.

  Furthermore, in the proposal disclosed in Patent Document 1, since the yarn path depth L is shorter than the yarn path width W, that is, there is not enough time for the injected fluid to decelerate, leaving the momentum on the opposing wall surface. Although the fluid does not hit the yarn directly because it collides and acts on the yarn, the entanglement treatment of the yarn by the power of the jet acting on the yarn damages the yarn, resulting in fluff and slack. Will lead to the occurrence of. Further, since the jetted fluid collides with the opposing wall surface and abruptly changes its direction, the yarn is greatly shaken and the behavior of the yarn becomes intense. It was not sufficient for entanglement processing to yarns that required more yarn damage reduction, such as fine yarns.

JP 2003-96637 A JP 2002-69780 A

  In view of the above-described points, the object of the present invention is to make a multi-thread with a fineness of a single yarn in recent years (for example, 100 filaments or more and a single yarn fineness of 2 dtex or less (generally 0. 1 to 2.0 decitex or less)), and suitable for producing a new synthetic fiber multifilament yarn that can be entangled with a raw yarn in a synthetic fiber multifilament yarn that is required to be processed at a high speed. It is in providing the entanglement processing apparatus and the entanglement processing method of the yarn used for.

The yarn entanglement processing apparatus of the present invention that achieves the above-mentioned object has the following configuration (1).
(1) A yarn entanglement processing device, which is a pair of extending fluid ejection holes for confounding a yarn, the fluid ejection holes being open, and perpendicular to the extending direction of the fluid ejection holes In the entanglement processing apparatus, the yarn processing section includes a direction opening surface, a yarn processing portion that is a concave portion that faces the opening surface and the yarn travels, and a slit portion that introduces the yarn into the yarn processing portion. In the cross section perpendicular to the traveling direction, the pair of fluid ejection holes are perforated in parallel to each other, and the depth (L) of the yarn processing portion including the concave portion including the slit portion is defined as the yarn processing portion. And the shape of the ridge line forming the contour of the recess in the yarn processing portion is formed by the tangent line in contact with the ridge line and the axis of the fluid ejection hole. The tangent angle θ (°) is equal to both of the recesses in the yarn processing unit. A yarn entanglement processing apparatus characterized in that the yarn tangentially increases from the end toward the deepest point (G) of the recess, or continuously increases from an angle of 0 ° or more toward 90 °.

More specifically, the yarn entanglement processing apparatus of the present invention preferably has the following configurations (2) to (5).
(2) The relationship between the depth (L) of the concave portion in the yarn processing portion including the slit portion and the yarn path width (W) of the yarn processing portion satisfies the following expression (1) Yarn entanglement processing equipment.

1.0 <L / W ≦ 2.5
(3) The relationship between the depth (L) of the concave portion in the yarn processing portion including the slit portion and the depth (L1) of the concave portion in the yarn processing portion excluding the slit portion satisfies the following expression. The yarn entanglement processing apparatus according to (1) or (2), wherein:

0.4 ≦ L1 / L
0.1 [mm] ≦ L−L1
(4) The relationship between the yarn path width (W) of the yarn processing section, the diameter (D) of the pair of injection holes, and the drilling pitch (P) of the pair of injection holes satisfies the following formula. The yarn entanglement processing device according to any one of (1) to (3).

D <P <WD
(5) When the running distance (L2) from the intersection (P) where the ridge line of the yarn processing unit and the axis of the fluid injection hole intersect to the opening surface is expressed by the following equation (a), the tangent angle ( The yarn entanglement processing device according to claim 1, wherein θ) satisfies the following expression (b).

L2 = L−W / 2 + (W / 2) sin θ... (A)
30 ° <θ <70 ° (b)
The yarn entanglement processing method of the present invention has the following configuration (6).
(6) A yarn entanglement processing method, wherein the yarn is entangled using the yarn entanglement processing device according to any one of (1) to (5).

  In the present invention, the “yarn path depth L of the yarn processing portion” is a distance in a direction parallel to the fluid injection hole in a cross section perpendicular to the running direction of the yarn, and is the deepest point from the opening surface. The distance to (G).

  In the present invention, the “yarn width (W) of the yarn processing section” is a distance in a direction parallel to the opening surface in a cross section perpendicular to the running direction of the yarn, and is a recess in the yarn processing section. This is the distance connecting both ends not including the rounded corners.

  According to the yarn entanglement processing device of the present invention, the yarn path depth is made longer than the yarn path width, and the jetted fluid creates a flow along the yarn path wall surface smoothly, so that fluff and slack are not generated. Since the entanglement process can be performed, a yarn excellent in entanglement quality can be obtained.

FIG. 1 is a schematic perspective view schematically showing the structure of a yarn entanglement applying device 1 according to the present invention. FIG. 2 is a schematic cross-sectional model diagram in which a cross section in a direction perpendicular to the running direction Y of the yarn in the confounding imparting apparatus 1 shown in FIG. 1 is taken. FIG. 3 is a schematic plan model diagram of the entanglement imparting device 1 shown in FIGS. 1 and 2, and shows the relationship between the yarn path width W of the yarn processing unit and the depth L1 of the concave portion excluding the slit portion of the yarn processing unit. It is a figure explaining. FIG. 4 is a schematic plan model diagram of the confounding imparting device 1 shown in FIGS. 1 and 2, and a tangent line formed by a tangent line Lp that is in contact with a ridge line that forms an outline of the yarn processing unit and an axis line Lc of a pair of fluid ejection holes. It is a figure explaining the relationship with angle (theta) (degree). FIG. 5 is a schematic plan model diagram of the confounding imparting apparatus 1 shown in FIGS. 1 and 2 similarly to FIG. 4, and is a diagram for explaining the relationship between the approach distance L2 and the tangent angle θ (°). FIG. 5 is an arrow view of the schematic plane model diagram of the confounding imparting apparatus 1 shown in FIG. 3 as viewed from the Z direction. FIGS. 5A to 5D are cross-sectional views of an entanglement processing apparatus according to another embodiment of the present invention. It is the schematic which shows an example of the spinning and winding apparatus provided with the entanglement processing apparatus of this invention.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view schematically showing a structure of a yarn entanglement processing apparatus according to the present embodiment. The entanglement processing apparatus 1 includes a fluid supply unit 2, an injection nozzle unit 3, and a yarn processing block 4. The arrow Y indicates the running direction of the yarn.

  The yarn to be entangled by the yarn entanglement processing apparatus according to this embodiment is composed of synthetic fiber filaments such as polyester fiber and polyamide fiber, and the single yarn (single filament) fineness is 0.1 to 2.0 dtex. It consists of a filament group.

  In recent years, the yarn is usually produced by high-speed spinning such as a take-up speed of 3000 m / min or more, and is produced as a so-called POY yarn (partially oriented undrawn yarn). It is important that the single yarn fineness is in the range of 0.1 to 2.0 dtex. When the fineness is larger than 2.0 dtex, the stiffness of the single yarn, the whole yarn, or the fabric is felt. It becomes difficult to obtain a fabric having a texture that produces a soft feeling and a soft bulging feeling, which is one of the intended purposes of the present invention. The lower limit of the single yarn fineness is preferably about 0.1 dtex, and more preferably in the range of about 0.25 to 1.5 dtex in practice. Further, it is most preferable to use a polyester-based synthetic fiber typified by polyethylene terephthalate fiber in terms of making the most of the texture.

  FIG. 2 shows a schematic cross-sectional model diagram in which a cross section in a direction perpendicular to the running direction Y of the yarn in the entanglement processing apparatus 1 shown in FIG. 1 is taken.

  In FIG. 2, the entanglement processing device 1 includes two fluid supply units, three injection nozzle units, and four yarn processing blocks.

  In the figure, 7 is a fluid ejecting portion, and a pair of extending ejection holes 7a and 7b are perforated perpendicularly to the opening surface F and parallel to each other.

  Reference numeral 6 denotes a yarn processing portion that is opposed to the opening surface F and has a concave portion, and is a space in which the yarn travels, and the traveling yarn causes vibrational behavior in this portion and is entangled.

  8 is a slit part and 9 is a fluid introduction passage. The slit portion 8 is constituted by the spacer 5 and is used as a yarn introduction portion when threading the yarn traveling to the entanglement processing apparatus 1 is threaded.

  The fluid introduction passage 9 is a passage for supplying a fluid used for the entangling process, and the compressed air is guided to a space provided in the fluid ejection nozzle portion 3 and further from a pair of extending ejection holes 7a and 7b. An air stream is injected.

  FIG. 3 is a schematic plan view of the entanglement processing apparatus 1 shown in FIGS. 1 and 2. The yarn path width W of the yarn processing unit 6, the yarn path depth L including the slit portion of the yarn processing unit 6, and the yarn It is a figure explaining the relationship between the depth L1 of the recessed part except the slit part 8 of the process part 6, and the yarn path depth L including the slit part of the yarn process part 6. FIG.

  As shown in the figure, the entanglement processing apparatus of the present embodiment is configured so that the yarn path depth (L) of the yarn processing unit is larger than the yarn path width (W) of the yarn processing unit. Since the jet velocity of the fluid jetted from the hole can be sufficiently reduced and the jet force can be controlled, it is possible to prevent the fluid from swaying and vibrating the yarn.

  4 and 5 are schematic plan views of the entanglement processing apparatus 1 shown in FIGS. 1 and 2, and a tangent line Lp that is in contact with the ridge line Li that forms the contour of the yarn processing unit 6 excluding the slit unit 8, and the fluid ejection It is a figure explaining the relationship between the tangent angle (theta) (degree) which the axis line Lc of hole 7a, 7b makes, and the relationship between run-up distance L2 and tangent angle (theta) (degree) similarly.

  In the present embodiment, the pair of extending fluid ejection holes 7a and 7b are perforated perpendicularly to the opening surface F and parallel to each other. The shape of the yarn processing unit 6 includes a tangent line Li in contact with a ridge line that forms an outline of the yarn processing unit 6 on both sides of the virtual center plane A of the yarn processing unit 6 and the pair of extending fluid ejection holes 7a and 7b, and a pair. The tangential angle θ (°) formed by the axis Lc of the fluid injection holes 7a and 7b extending is constant as it advances to the deepest point (G) of the yarn processing section, or from 0 ° or more to 90 °. The contour lines LiR and LiL are configured to be continuously large. That is, in the present embodiment, the ridge line Li of the recess forming the yarn processing unit 5 has a transverse section formed in a U-shaped groove by the contour lines LiR and LiL.

  By adopting the above-described configuration, the fluid can be entangled while smoothly winding the yarn without disturbing the flow of the moderately adjusted fluid. It becomes possible to treat the entanglement uniformly in the strip.

The ratio (L / W) of the yarn path depth L of the yarn processing unit 6 and the yarn path width W of the yarn processing unit 6 is preferably configured to be in the range of more than 1 and 2.5 or less. By making L / W larger than 1, the speed of the injected fluid can be reduced, and the force of the injected fluid can be adjusted and act appropriately so that fluff and slack do not occur on the yarn, By setting L / W to 2.5 or less, it becomes possible to act on the yarn while maintaining the force of the ejected fluid to such an extent that entanglement can be uniformly applied.
Further, by setting the ratio of the yarn path depth (L) of the concave portion in the yarn processing portion including the slit portion and the depth (L1) of the concave portion in the yarn processing portion excluding the slit portion to 0.4 or more, the yarn processing Since the fluid sprayed to the section does not flow out of the device from the slit section, it is possible to prevent the yarn from jumping out of the slit section and to smoothly flow the sprayed fluid along the wall surface of the recess. It is possible to gently act on the yarn. Moreover, by subtracting the depth (L1) of the concave portion in the yarn processing portion excluding the slit portion from the yarn path depth (L) in the concave portion in the yarn processing portion including the slit portion, the dimension is 0.1 mm or more. While the jetted fluid is immediately along the smooth wall surface of the recess, it is possible to suppress the occurrence of fluff and slack by gently confounding the yarn, and when introducing the yarn into the yarn processing unit, It becomes possible to have a good yarn hooking property that does not result in yarn breakage when the yarn is sandwiched between the slit portions.

  Further, when the run-up distance L2 is expressed by L−W / 2 + (W / 2) sin θ, the position of the confluence point (Q) is set so that the contact angle θ (°) exceeds 30 ° and is less than 70 °. By configuring, the velocity of the air injected from the injection holes 7a and 7b can be reduced, and a smoother flow along the contour lines LiR and LiL can be created. As a result, the occurrence of fluff and slack is extremely small, and the entangled quality is achieved. Excellent yarn can be produced.

  FIG. 6 is a schematic plan view of the plane model diagram shown in FIG. 3 as viewed from the Z direction, and is a model diagram showing the relationship between the yarn path width W, the injection hole diameter D, and the injection hole pitch P. FIG. FIG. 6 is a diagram for explaining that the perforation pitch (P) of the injection holes, which is the technical content according to the embodiment, is in a range that exceeds the injection hole diameter (D) and is smaller than the difference between the yarn path width (W) and the injection hole diameter (D); ) Is a diagram for explaining a case where the perforation pitch (P) of the injection holes, which is outside the scope of the technical contents according to the embodiment, is larger than the difference between the yarn path width (W) and the injection hole diameter (D), and (c) It is a figure explaining the case where the drilling pitch (P) of the injection hole which is outside the range of the technical content of this embodiment is smaller than the injection hole diameter (D).

  As shown in the figure, in (b) and (c), which deviates from D <P <WD, which is the range of the present embodiment, an interference portion between the injection holes 7a and 7b and the wall surface of the yarn processing portion 6 or a pair of Since there is an overlapping portion where the injection holes 7a and 7b overlap each other, the fluid injected from the injection holes is disturbed, and the yarn entanglement process is performed without disturbing the flow that is the object of the present embodiment. It cannot be achieved to suppress the occurrence of slack.

  In FIG. 6A, the perforation pitch (P) of the injection holes is made smaller than the value obtained by subtracting the diameter (D) of the injection holes from the yarn path width (W) of the yarn processing part. It is possible to prevent the flow of the jetted fluid from being disturbed by interference with the road wall surface, and since the drill pitch (P) of the jet holes is larger than the diameter (D) of the jet holes, the pair of jet holes interfere with each other. Therefore, it is possible to prevent the turbulence of the flow caused by the mutual jets joining.

  FIG. 7 is a schematic plan model view of the entanglement processing apparatus 1 according to another embodiment of the present embodiment, and (a) illustrates that the shape of the contour line of the yarn processing section 6 formed of a concave portion is a U-shape. (B) is a model figure explaining that it consists of a semicircle and (c) consists of an ellipse. Any shape that satisfies the technical content of the present invention can provide a yarn with excellent entanglement quality that does not cause fluff or slack in giving entanglement to the yarn.

(1) Manufacturing method of entangled yarn Each polyester part distribution undrawn yarn obtained in each of the examples and comparative examples of the present invention is melted and discharged from a die, and after cooling and solidifying the discharged yarn, an oil agent is applied, and then Using an entanglement processing apparatus, the entanglement was given under the conditions shown in Table 1, and then wound up at a speed of 3000 m / min.
(2) Measurement and evaluation of the number of confounding:
About each polyester partially oriented undrawn yarn obtained in each Example / Comparative Example of the present invention, a pretension is set to 10 cN and a trip tension is set to 17 cN using an automatic continuous entanglement tester R-2072 manufactured by Rosshield. Then, the sample yarn was run with the number of measurement of the entangled portion being 20, and the yarn length (running yarn length) required until 20 entangled portions were counted was measured, and the yarn per 20 entangled portions First, the length value was determined.

  Further, the value of the yarn length per 20 entangled portions was converted into the number of entanglements per 1 m of yarn length, and the converted value was determined as “number of entanglements per 1 m of yarn length”. In the measurement, the average value was obtained by setting the n number to 20 times.

In the determination of the number of entanglements, the number of entanglements per 1 m length of yarn is expressed as “bad” in Table 1 as “bad”, and expressed as “◯” in Table 1 as 5 or more “good”. “Good” was accepted and “bad” was rejected.
(2) Measurement and determination of the number of fluff:
About each polyester partial orientation undrawn yarn obtained in each example and comparative example of the present invention, a detection height is set to 2 mm by an S-type detector using a fluff counting device ΦDT-105 manufactured by Toray Engineering Co., Ltd. Then, the unwinding speed of the package was set to 500 m / min, the yarn length of 12000 m was measured, and the number of fluffs existing per 12000 m length of the yarn was obtained as it was. In the measurement, the number of n was 20 times and the average was obtained.

The number of fluff is determined as “bad” when the number of fluff per 12,000 m length of yarn exceeds 10 is indicated as “bad” in Table 1, and 10 or less as “good” in Table 1. “Good” was marked as “good” and “bad” was rejected.
Examples 1-3, Comparative Examples 1-10
Polyethylene terephthalate multifilament yarns having 130 dtex and 144 filaments were produced using the spinning and winding apparatus shown in FIG.

The winding speed is 3000 m / min, the speed of the first godet roll is 3000 m / min, and the speed of the second godet roll is 3000 m / min.
Table 1 shows the yarn quality of each partially oriented polyester partially undrawn yarn obtained in Examples and Comparative Examples.

  The entanglement processing apparatus used was one having an injection hole diameter of 0.6 mm according to the conditions shown in Table 1, and the entanglement process was performed with a fluid (pressure air) injection pressure of 0.4 MPa.

  As shown in Table 1, when the entanglement processing device of the present invention is used, even if a high-pressure jet is injected and collided, a smooth flow that does not damage the yarn is created and entangled. Since there is no risk of increasing fluff and looseness, jumping out of the yarn, and clogging at the yarn introduction portion, the yarn can be provided with uniform and sufficient convergence in the longitudinal direction. Is used, the generation of fluff increases, or even if the generation of fluff is small, the confounding application efficiency is poor and sufficient convergence cannot be obtained.

1: Entanglement processing device 2: Fluid supply unit 3: Injection nozzle unit 4: Yarn processing block 5: Spacer 6: Yarn processing unit 7: Fluid injection unit 7a: Fluid injection hole 7b: Fluid injection hole 8: Slit unit 9: Fluid Introduction passage 10: Bolt 11: Thread 12: Base 13: Refueling guide 14: First godet roll 15: Second godet roll 16: Winding machine W: Traveling direction L of the yarn path of the yarn processing section L: Yarn processing section Thread path depth L1: Yarn path depth L2 of thread processing section excluding slit section: Run-up distance F: Opening surface G: Top point Q of thread processing section Q: Contour line of thread processing section and axis of injection hole intersect Intersection Li: Yarn processing portion contour Lp: Tangent line in contact with yarn processing portion contour Lc: Fluid injection hole axis θ °: Tangent angle formed by the tangent line in contact with the yarn processing portion contour line and the fluid injection hole axis

Claims (6)

  A yarn entanglement processing apparatus, wherein a pair of extending fluid ejection holes for confounding the yarn, and the fluid ejection holes are open and in a direction perpendicular to the direction in which the fluid ejection holes extend. In an entanglement processing apparatus having an opening surface, a yarn processing section that is opposed to the opening surface and that has a recess in which the yarn travels, and a slit section that introduces the yarn into the yarn processing section, the running of the yarn In the cross section perpendicular to the direction, the pair of extending fluid ejection holes are perforated in parallel to each other, and the yarn path depth (L) of the yarn processing portion including the recess including the slit portion is The yarn processing section is configured to be larger than the yarn path width (W) of the yarn processing section, and the shape of the ridge line forming the contour of the concave portion in the yarn processing section is tangent to the ridge line, and the fluid ejection hole The tangent angle (θ) formed by the axis is the front of the yarn processing section. Constant or, alternatively yarn interlacing processing apparatus according to claim from 0 ° or more angles that increases continuously towards the 90 ° in accordance with the both end portions proceed to the deepest point of the recess (G) of the recess. The yarn entanglement processing device according to claim 1, wherein the relationship between the yarn path depth (L) and the yarn path width (W) of the yarn processing unit satisfies the following expression.
1.0 <L / W ≦ 2.5 The relationship between the depth (L1) of the concave portion in the yarn processing portion excluding the slit portion and the yarn path depth (L) of the yarn processing portion including the slit portion satisfies the following expression: The yarn entanglement processing device according to claim 1 or 2.
・ 4 ≦ L1 / L
0.1 [mm] ≦ L−L1 The relationship between the yarn path width (W) of the yarn processing section, the diameter (D) of the pair of extending injection holes, and the drilling pitch (P) of the pair of extending injection holes satisfies the following equation: The yarn entanglement processing apparatus according to any one of claims 1 to 3.
D <P <WD When the running distance (L2) from the intersection (Q) where the ridge line of the yarn processing unit and the axis of the fluid injection hole intersect to the opening surface is expressed by the following equation (a), the tangent angle (θ) is The yarn entanglement processing device according to any one of claims 1 to 4, wherein the following equation (b) is satisfied.
L2 = L−W / 2 + (W / 2) sin θ... (A)
30 ° <θ <70 ° (b)   A yarn entanglement processing method, wherein the yarn is entangled with the yarn entanglement processing device according to any one of claims 1 to 5.

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