JP3088930B2 - Bulk structure yarn and method for producing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic fiber bulky structural yarn suitable for use in high-grade clothing and clothing materials, and a method for producing the same.

[0002]

2. Description of the Related Art As a conventional technique, an interlaced yarn having an interlaced portion and an unentangled portion in the fiber axis direction of the yarn and having an intermittent interlacing structure is disclosed in, for example, Japanese Patent Publication No. 61-8172, Japanese Patent Application Laid-Open No.
No. 146029, Japanese Patent Application Laid-Open No. 4-281029,
JP-A-6-220733 has been proposed. These mainly use interlaced nozzles and the like to form entangled portions and unentangled portions.When these unentangled portions are used as warps or wefts of the woven fabric, they are woven into the texture points of the woven fabric and have fine surface. I couldn't get a natural feel. When twists of 500 to 800 T / m or more were added to these entangled yarns (twisting), bulky portions were involved in these twists, and a natural feeling of bulkiness or fine feeling could not be obtained.

Japanese Patent Application Laid-Open No. Hei 4-2810 discloses an invention in which bulky portions and non-bulky portions alternately exist while having a core / sheath yarn length difference.
No. 29, JP-A-6-173330, JP-A-6-173330
No. 33333, and the like.

[0004]

However, a processed yarn having a bulky portion and a non-bulky portion alternately having a core / sheath yarn length difference has a structure of both the bulky portion and the non-bulky portion. It is not complicated and there are not many yarn length differences.
There was a problem that it was not possible to give a natural feeling with a fine texture. In particular, when used as a warp or weft of a woven fabric, it is woven at the texture point, and when a real twist of 500 to 800 T / m is put, it is entangled in the twist and the texture of the unentangled or bulky portion, or the surface When the feel cannot be sufficiently appeared, and when a strong twist of 1000 to 1200 T / m or more is added,
There is a problem that the surface feel cannot be fully utilized. Therefore, any method has been proposed in which the filament is raised on the surface by performing a relaxation treatment or a fir treatment called “texture” in the process of dyeing the woven fabric, but the surface feel is not sufficient.

In order to solve the above-mentioned conventional problems, the present invention provides a knitted fabric having a natural texture, rich in surface change, having a natural bulky feeling, and having a fine surface even when actually twisted. It is an object of the present invention to provide a bulky structure yarn capable of obtaining a yarn and a method for producing the same.

[0006]

In order to achieve the above object, the bulky structural yarn of the present invention has a birefringence Δn of 20 × 10
^-3 to 80 × 10 ^-3 and elongation difference is within 30%
At least two polyester multifilament yarns
Using the strip, perform the simultaneous false twisting process, and continue to mix
A bulky structural yarn subjected to a fluid treatment process for imparting a fiber and a loop, wherein the bulky portion A includes closed loops, the medium bulky portion B includes slack and / or open loops, and The low bulkiness portions C are randomly arranged in the fiber axis direction, and when a load of 1 g / d is applied in the fiber axis direction, the A,
It is characterized in that the number of each of the parts B and C is one or more per inch.

[0007] The processed yarn of the present invention has the following 3
Place two bulky parts. (1) High bulky portion A, middle bulky portion B, low bulky portion C (however, the order does not matter) (2) The high bulky portion A has a mixture of closed loops. A medium bulky portion equal or bulkiness of more. (3) The middle bulky portion B has a slack and / or an open loop. (4) The low-bulk portion C is composed of entangled yarns and mixed fibers, and has a shape similar to that of a normal false twisted crimped yarn. The bulk height is lower than that of.

In the above construction, the bulky portions A, B,
It is preferable that the number of each part of C is one or more per inch. Further, it is more preferable that at least two of the bulky portions A, B, and C exist. Furthermore, the order of the bulky portions A, B, and C may exist at random. In the above description, the load of 1 g / d (denier) is a considerably high load, and even when such a high load is applied, the three bulky portions (high bulky portion A, medium bulky portion B, low bulky portion) Preserving the form of part C) indicates that the structure of the yarn is strong.

Next, a method for producing a bulky processed yarn of the present invention is a method for producing a bulky structured yarn comprising at least two types of filament yarns, wherein the birefringence Δn is from 20 × 10 ^-3 to 8
Using at least two types of polyester multifilament yarns in the range of 0 × 10 ⁻³ and elongation difference of 30% or less, simultaneous drawing and false twisting are performed, and subsequently, entanglement, blending, and imparting a loop are performed. Characterized in that the fluid processing is performed. In the above description, the fluid treatment may be a fluid treatment device capable of simultaneously achieving the entanglement, the blending, and the loop imparting process, or may be a device for performing the entanglement, the blending, and the loop imparting device. In the above, in the case of using a device for performing entanglement and fiber mixing and a device for providing a loop, the order does not matter. In addition, the supply speed of two multifilaments may be preferably changed during the simultaneous false twisting, and one of them may be oversupplied. These yarns may be ordinary disperse dye dyeable yarns or cationic dye dyeable yarns.

[0010]

The bulky structure yarn of the present invention has at least 2
The kind of filament is a high bulky part A where a closed loop is mixed,
Medium bulky portion B in which sagging and / or open loop exists, and low bulky portion C are randomly arranged in the fiber axis direction,
When a load of 1 g / d is applied in the fiber axis direction,
B, the Rukoto exist number of portions of C is more than one each per inch, rich in surface changes have natural bulk feeling, even fine surface even when you put the real twist A bulky structure yarn capable of obtaining a knitted fabric having a natural touch can be realized.

In the above, the number of each of the bulky portions A, B, and C is at least one per inch, or any of the bulky portions A, B, and C is 1 inch. If two or more are present, a more preferable surface change and a natural bulky feeling can be exhibited.

Next, according to the production method of the present invention, there is provided a method for producing a bulky structure yarn comprising at least two kinds of filament yarns, wherein the birefringence Δn is from 20 × 10 ^-3 to 80 × 1.
0 in the range of ^-3, at least the elongation difference within 30% 2
By using a kind of polyester multifilament yarn, performing simultaneous draw false twisting, subsequently performing fluid treatment, and performing entanglement and blending and loop imparting treatment, the bulky structural yarn of the present invention efficiently. Can be manufactured reasonably.

In the above method, if the fluid treatment is a process of imparting a loop to the constituent filament yarns in addition to the entanglement and blending, the high bulk portion A and the middle bulk portion B
And the low bulky part C can be effectively produced.

[0014]

The present invention will be described more specifically with reference to the following examples. FIG. 1 schematically shows the appearance of a bulky structure yarn according to one embodiment of the present invention. In FIG. 1, A is a high bulk portion where closed loops are mixed, B is a middle bulk portion where a slack and / or an open loop exists, and C is a low bulk portion C where an interlaced portion remains. The high bulky portion A, the middle bulky portion B and the low bulky portion C are randomly arranged in the fiber axis direction, and when a load of 1 g / d is applied in the fiber axis direction, the A, B, and C The number of each part is one or more per inch. Wa is the bulky width of the high bulky portion A, and Wb is the medium bulky portion B.
Bulky width, Wc represents a bulky width of the low bulk portion C, Wa, W of
The relationship between the widths of b and Wc is as follows: 5.0 × Wc ≧ Wa ≧ 1.1 × Wc 3.0 × Wc ≧ Wb ≧ 1.1 × Wc Wa ≧ Wb (where Wa is a high bulk portion) A is bulky width, Wb is medium bulky part
The bulkiness width of B, Wc indicates the bulkiness width of the low bulkiness portion C,
High widths Wa, Wb and Wc are 1 g / d (denier) in the fiber axis direction.
Shows the length (unit: mm) when a load of
You. ).

Next, FIG. 2 shows a method for producing a bulky structure yarn according to one embodiment of the present invention. In FIG. 2, the core yarn unwound from the core yarn package 1 is supplied to a yarn guide 2, a nip roll 3, and a yarn guide 4. On the other hand, the sheath yarn unwound from the sheath yarn package 5 passes through the yarn guide 6, the nip roll 7, and the yarn guide 8, and is supplied to the yarn guide 4. The sheath yarn is combined with the core yarn by the yarn guide 4. The union angle α of the sheath yarn with respect to the core yarn is preferably in the range of 15 ° to 105 °. The hole diameter of the thread guide 4 is 2 mm to 200 mm.
The degree is preferred. After the sheath yarn is combined with the core yarn by the yarn guide 4, heat treatment is performed by the hot plate 9 in a state where false twist is added by the twister (twisting device) 10. Between the nip rolls 3 and 11, simultaneous stretch false twisting is performed. Next, the entanglement process is performed between the nip rolls 11 and 13 by the entanglement nozzle 12 using the pressurized air. Finally, it is wound up on a winding package 16 by a winding machine 15.

As the entanglement nozzle, any nozzle can be used as long as it is a nozzle which opens the filament, and thereafter performs entanglement, mixing and looping by vibration. For example, the confounding nozzle 30 shown in FIG. 3 supplies a pressurized fluid (for example, air) from a fluid inlet 31 and discharges the fluid in a substantially vertical direction toward a hollow cylindrical portion 32. The supplied multifilament yarn (simultaneously drawn false twisting yarn) 35 is supplied at an angle from the edge 33 of the hollow cylindrical portion 32 and is taken at an angle from the edge 34 of the hollow cylindrical portion 32. In the nozzle, the multifilament constituent fibers are spread and mixed by injection of a pressure fluid to form a spread portion 36, and entangled portions 37 and 38 are formed on both sides thereof.

Next, a fluid turbulent nozzle 40 shown in FIG. 4 supplies a pressure fluid (for example, air) from a fluid inlet 41,
It is discharged from the injection section 42 to the hollow cylindrical section 43 in the yarn feeding direction. The supplied multifilament yarn (simultaneously drawn false twisting yarn) 46 is supplied at an angle from the edge of the hollow cylindrical portion 43, and after colliding with the collision ball 45, the guide plate 44.
Take along. In the nozzle, the multifilament constituent fibers are spread and mixed by injection of the pressure fluid, and then collide with the collision ball 45 to form the loop 47 and the shortest distance along the guide plate 44. A passing part is formed. The portion passing through the shortest distance becomes the densely entangled portion 49, and the portion where the loop 47 is formed passes through the long distance and converges to become the bulging loop portion 48.

Next, a fluid turbulent entanglement nozzle 50 shown in FIG.
Supplies a pressurized fluid (for example, air) from a fluid introduction port 51 and injects the hollow fluid into a hollow cylindrical portion 52 in a yarn feed direction. Further, the fluid inlet 5 may be perpendicular to the hollow cylindrical portion 52 and may be injected at right angles to the traveling yarn. The supplied multifilament yarn (simultaneously drawn false twisting yarn) 54 has a hollow cylindrical portion 5.
It is supplied at an angle from the edge of No. 2 and is taken through a yarn guide 53 with or without an angle. In the nozzle 55, the multifilament constituent fibers are opened and mixed by injection of the pressure fluid, and in addition, a loop is formed. The multifilament yarn that has passed through the yarn guide 53 has an opening portion 56, an entanglement converging portion 57, and a loop portion 5.
8 are formed.

[0019] In the nozzle 40 shown in nozzle 30 and 4 shown in FIG. 3, Ru used in series. In that case, the order may be either. On the other hand, the nozzle 50 shown in FIG. 5 can be used alone. In addition, since the fluid treatment is continuously performed after the simultaneous false-twisting of the stretching and the loop is provided, the loop becomes fine.

Next, a specific embodiment will be described.

Example 1 (1) As a raw yarn, the birefringence Δn is 20 × 10 ⁻³ to 80.
× 10 ^-3 are mixed, and the elongation is 120 ~
The following semi-drawn yarn (POY: pre-orientated yarn or highly oriented undrawn yarn) in the range of 130% was used. Core yarn: 250 denier, 4 filaments
Eight (hereinafter abbreviated as 250D-48f) polyethylene terephthalate (PET) multifilament sheath yarns having a denier of 150 after stretching:
250D-72f (150 denier after drawing), PET multifilament (2) Supply difference between core yarn and sheath yarn: 0% (3) Combined angle α of sheath yarn with core yarn: about 45 ° (4) Temporary simultaneous drawing Twisting conditions Yarn speed: 500 m / min Number of false twists: 1950 T / m False twisting temperature: 210 ° C. Stretching ratio: 1.6 times (5) Entangling treatment conditions Air pressure: 6 kg / cm ² Flow rate: 60 l / min Nozzle type: Nozzle for opening the filament and then performing entanglement, blending and looping by vibration (FIG. 5) (6) Result As a result of performing under the above manufacturing conditions, the following yarn was obtained. High bulkiness A when applying a load of 1 g / d (denier) in the fiber axis direction: 65 pieces / m on average (1.65 pieces / inch on average), medium bulky part B: 83 pieces / m on average (2 average) .11 /
Inch), low bulkiness C: 76 pieces / m on average (1.93 on average)
Therefore, it was confirmed that the number of each part was 1 piece / inch or more.

When this yarn was used as a warp and a weft of a woven fabric, a good woven fabric was obtained which had a rich surface change, had a natural bulky feeling, and had little difference in dyeing between the core yarn and the sheath yarn. Was. Further, an additional 800 T / m is added to the yarn obtained above.
Twisting and weaving resulted in a knitted fabric with a fine natural touch on the surface.

Example 2 (1) As a raw yarn, the birefringence Δn is 20 × 10 ⁻³ to 80.
× 10 ^-3 range is mixed and elongation is 145%
The following semi-drawn yarn was used. Core yarn: PET multifilament with a fineness of 175D-48f (100 denier after drawing) Sheath yarn: 150D-72f (75 denier after drawing), PE
T multifilament (2) Supply difference between core yarn and sheath yarn: 0% (3) Combined angle α of sheath yarn with core yarn: 30 ° (4) Conditions for simultaneous false twisting Yarn speed: 600 m / min Number of false twists : 2300 T / m False twist temperature: 200 ° C Stretching ratio: 1.6 times (5) Entangling treatment conditions Air pressure: 6 kg / cm ² Flow rate: 60 l / min Nozzle type: The nozzle shown in FIG. Immediately thereafter, the nozzle shown in FIG. 4 was arranged. (6) Results As a result of the above production conditions, the following yarn was obtained. High bulky part A: 58 pieces / m on average (1.47 pieces / inch on average), medium bulky part B: 76 pieces / m on average (1.93 pieces / inch on average)
Inches), low bulkiness C: 85 pieces / m on average (2.16 on average)
Therefore, it was confirmed that the number of each part was 1 piece / inch or more.

When this yarn was used as a warp and a weft of a woven fabric, a woven fabric having a very large surface change and a natural bulky feeling was obtained because of the presence of three bulky portions. In addition, the closed loop filament of the high bulky portion A was not woven at the texture point of the woven fabric, and a fine natural feel on the surface could be expressed. The same was true for circular knitted fabrics.

Further, the obtained yarn has a thickness of 500 to 800 T / m.
When the woven fabric was knitted and knitted, the filament in the closed loop portion was not entangled and had a feeling of bulkiness, waist and tension, and a fine natural surface feel was obtained.

[0026]

As described above, the bulky structural yarn of the present invention has a birefringence Δn in the range of 20 × 10 ⁻³ to 80 × 10 ⁻³ .
And at least two types of poly with a difference of elongation within 30%
Using an ester multifilament yarn, stretch
Perform twist processing, and subsequently add entanglement, blending and looping
Bulky yarn that has been subjected to a fluid treatment process for fabricating, wherein the high bulky portion A in which closed loops are mixed, the middle bulky portion B in which sagging and / or open loops are present, and the low bulky portion C are randomly arranged in the fiber axis direction. When a load of 1 g / d is applied in the fiber axis direction, the number of each of the portions A, B, and C is 1
The presence of at least one piece per inch has a rich surface change, has a natural bulky texture, has little difference in dyeing between the core yarn and the sheath yarn, and has a fine surface even when a real twist is inserted. A bulky structure yarn capable of obtaining a knitted fabric having a natural tactile sensation can be realized.

[0027] In the bulky portion A, B, you have the C
When there are two or more shifts per inch , a more preferable surface change and a natural bulky feeling can be exhibited . In addition , the order of the bulky portions A, B, and C may be randomly present.

Next, according to the production method of the present invention, there is provided a method for producing a bulky structure yarn comprising at least two kinds of filament yarns, wherein the birefringence Δn is from 20 × 10 ^-3 to 80 × 1.
0 in the range of ^-3, at least the elongation difference within 30% 2
Using a kind of polyester multifilament yarn, performing simultaneous draw-twisting, followed by fluid treatment, entanglement and blending processing, the bulky structural yarn of the present invention can be efficiently and rationally manufactured. .

[Brief description of the drawings]

FIG. 1 is a diagram schematically showing the appearance of a bulky structure yarn according to one embodiment of the present invention.

FIG. 2 is a process diagram showing a method for producing a bulky structure yarn according to one embodiment of the present invention.

FIG. 3 is a cross-sectional view of the entanglement nozzle used in one embodiment of the present invention.

FIG. 4 is a cross-sectional view of another entanglement nozzle used in one embodiment of the present invention.

FIG. 5 is a cross-sectional view of another entanglement nozzle used in one embodiment of the present invention.

[Explanation of symbols]

Bulky width of bulky width Wc low bulk portion C of the bulky portion B in bulky width Wb of the bulky portion C lower bulky portion Wa high bulkiness portion A in which the high bulk portion B sagging and / or open-loop A closed loop mixed exists 1 Core yarn package 2,4,6,8,8 'Yarn guide 3,7,11,13 Nip roll 5 Sheath yarn package 9 Hot plate 10 False twist twister 12 Entangling nozzle 15 Winding machine 16 Winding package 30 Entangling nozzle 31, 41, 51 Fluid introduction port 32, 43, 52 Hollow cylindrical part 33, 34 Edge of hollow cylindrical part 35, 46, 54 Multifilament yarn supplied 36 Spread part 37, 38, 49 Entangled part 40 Fluid turbulent nozzle 42 Injection part 44 Guide plate 45 Impact ball 47 Loop 48, 58 Loop part 50 Fluid turbulent entanglement nozzle 53 Thread guide 55 Inside nozzle 56 Spreading part 57 Entanglement converging part

────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁷ Identification code FI D02J 1/00 D02J 1/00 L (72) Inventor Nobuo Omae 1 No. 1 Uemiyaki, Kamimiyake, Heiwa-cho, Heiwa-cho, Nakajima-gun, Aichi Prefecture 1 (56) References JP-A-6-128828 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) D02G 1/02 D02G 3/04 D02G 3/24 D02G 3/36 D02J 1/00

Claims (4)

(57) [Claims] 1. A birefringence index Δn of 20 × 10 ^-3 to 80 ×
At least in the range of 10 ^-3 and elongation difference within 30%
Using two kinds of polyester multifilament yarns,
Performs simultaneous stretching and false twisting, then continues with entanglement, blending and looping
A bulky structural yarn which has been subjected to a fluid treatment process for imparting a high bulkiness portion A in which closed loops are mixed, a middle bulkiness portion B in which a slack and / or an open loop exists, and a low bulkiness portion C, wherein a fiber shaft is provided. 1g / d in the fiber axis direction
A bulky structural yarn characterized in that when a load is applied, the number of each of the portions A, B and C is at least one per inch. 2. One of the bulky portions A, B, and C is 1 inch.
The bulky structural yarn according to claim 1, wherein two or more yarns are present. 3. A method for producing a bulky structure yarn comprising at least two types of filament yarns, wherein the birefringence Δn is 2
It is in the range of 0 × 10 ⁻³ to 80 × 10 ⁻³ and the elongation difference is 3
Using at least two kinds of polyester multifilament yarns of 0% or less, simultaneous draw-twisting is performed, and subsequently, fluid treatment is performed to impart entanglement, blending and looping. Manufacturing method. 4. The bulk processing according to claim 3, wherein the fluid processing uses a fluid processing device that simultaneously achieves the entanglement, the blending, and the loop imparting process, or the device that performs the entanglement, the blending, and the loop. Manufacturing method of yarn.