JPH08296132A - Bulk structure yarn - Google Patents

Abstract

PURPOSE: To obtain a knitted or woven fabric which has variation-rich surface, naturally bulky touch and gives bulky touch, even when the yarn is strongly twisted by using at least two different kinds of filaments to develop more than 10% yarn length difference in yarn length and randomly arranging their high bulky parts (A) where closed loops are mixed, the intermediately bulky parts (B) having slacken yarns and/or open loops and the low bulky parts (C) containing interlaced parts in which the difference in the yarn length between the yarns constituting the parts (A) and (B) is larger than in the part (C). CONSTITUTION: A core yarn 1 and a sheath yarn 5 of polyester multifilament yarns are doubled, subjected to synchronous draw-false twisting (9, 10) and treated with fluid flow (12). When the core yarn and the sheath are doubled, a yarn guide 8 is kept at a certain angle in a range to the position 8' and a yarn guide 4 is used to allow the sheath yarn to double with the core yarn. The doubling angle αof the sheath yarn to the core yarn is preferably in a range from 15 deg. to 105 deg.. In the treatment of the yarn with the fluid (12), high- pressure air is used to interlaces and mix filaments and give loops to the filaments.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bulky structured yarn made of synthetic fiber suitable for high-grade clothing applications, clothing material applications and the like, and a method for producing the same.

[0002]

2. Description of the Related Art As a conventional entangled yarn having an interlaced portion and an unentangled portion in the fiber axis direction of the yarn and having an intermittent entangled structure, for example, Japanese Patent Publication No. Sho 61-8172 and JP Sho 60-146.
No. 029, JP-A-4-281029, JP-A-6-220733 and the like are proposed. These mainly use an interlaced nozzle or the like to form an entangled portion and an unentangled portion. When the unentangled portion is used as a warp or a weft of a woven fabric, it is woven into a texture point of the woven fabric and has a fine surface. I couldn't give it a natural feel.
Further, when a twist of 500 to 800 T / M or more was put into these entangled yarns (additional twisting), a bulky portion was involved in these twists, and a bulky feeling or a fine natural touch feeling was not obtained.

Further, there is an invention in which a bulky portion and a non-bulky portion are alternately present while having a core / sheath yarn length difference.
29, JP-A-6-173330, JP-A-6
-33333 publication etc. are proposed.

[0004]

However, the textured yarn in which the bulky portion and the non-bulky portion are alternately present while having the difference in the core / sheath yarn length has the structure of both the bulky portion and the non-bulky portion. It is not complicated and there is not much difference in yarn length.
There was a problem that it was not possible to give a fine, natural feel. In particular, when it is used as a warp or weft of a woven fabric, it is woven into a texture point, and when a real twist of 500 to 800 T / M is put in, it is wound into a twist and the texture of the non-entangled portion or the bulky portion, or the surface. If the feel cannot be fully expressed and further 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, both methods have been proposed in which a filament is floated on the surface by performing a relaxation treatment or a rubbing treatment called texture adjustment in the process of dyeing a woven fabric, but the surface feel is not sufficient.

In order to solve the above-mentioned conventional problems, the present invention has a rich surface change, has a natural bulky feel, and has a finely textured knitted texture on the surface even when strong additional twist is added. An object is to provide a bulky structured yarn from which a woven fabric can be obtained.

[0006]

In order to achieve the above object, the bulky structured yarn of the present invention is a bulky structured yarn composed of at least two types of polyester filament yarns, and a yarn length between the at least two types of filaments. 10% difference
As described above, three parts, a high bulky portion A in which closed loops are mixed, a medium bulky portion B having slack and / or an open loop, and a low bulky portion C including an interlaced portion are randomly arranged in the fiber axis direction, and C The difference in the yarn lengths of the constituent fibers of the A part and the B part is larger than that of the part.

In the above construction, the yarn length difference between the high bulkiness portion A and the medium bulkiness portion B is in the range of 5% to 100%, and the yarn length difference of the low bulkiness portion C is in the range of 0% to 5%. Preferably there is.

Further, in the above construction, 1 in the fiber axis direction.
When a load of g / d (denier) is applied, it is preferable that the number of A, B, and C parts is 1 or more per inch. Further, in the above structure, it is preferable that the birefringence Δn of each filament is in the range of 120 × 10 ^{−3 to} 180 × 10 ⁻³ .

In the above, the two or more types of filament yarns need to have a yarn length difference of 10% or more, and preferably have a yarn length difference of 15% or more. Here, the yarn length difference means a ratio of the lengths of the respective filament yarns when two or more kinds of filament yarns are decomposed into each and a load of 0.01 g / d (denier) is applied and measured. Further, three bulky portions (high bulky portion A, medium bulky portion B, low bulky portion C) are arranged, and the yarn length difference between the respective portions is the yarn length difference of the A portion: in the range of 5 to 100%, B Difference in yarn length of C part: 5 to 100%, difference in yarn length of C part: 0 to 5
% Range is preferred.

Further, in the present invention, it is preferable to arrange each of the three bulky portions (high bulky portion A, medium bulky portion B, low bulky portion C) at fine intervals, and 1 g in the fiber axis direction.
A, B, C when a load of / d (denier) is applied
It is preferable that the number of each part is one or more per inch. In the above, a load of 1 g / d (denier) is a considerably high load, and even under such a high load, the three bulky parts (high bulky part A, medium bulky part B, low bulky part) Maintaining the morphology of C) indicates that the yarn structure is strong.

Further, in the present invention, the yarn used is
Ordinary disperse dye dyeable type yarn or cationic dye dyeable type yarn may be used.

[0012]

The bulky structured yarn of the present invention is a bulky structured yarn composed of at least two types of polyester filament yarns, and has a yarn length difference of 10% or more between the at least two types of filaments, and a high bulkiness in which closed loops are mixed. Three parts, a part A, a medium bulky part B having slack and / or an open loop, and a low bulky part C including an entangled part, are randomly arranged in the fiber axis direction, and compared with the C part, the A part and the Due to the large difference in yarn length of the constituent fibers of the B part, the knitted fabric has a rich surface change, has a natural bulky feel, and has a fine surface with a natural tactile sensation even when strong additional twist is added. Obtainable. That is, when this bulky structure yarn is used for the warp or weft of the woven fabric, there are three bulky parts,
It is possible to obtain a woven fabric that has a very high degree of surface change and has a natural bulky feel. Moreover, the structure of the yarn is strong.
In addition, the bulky feeling does not change even when used for circular knitted fabrics. Further, the closed-loop filament of the A part is not woven at the texture points of the woven fabric, and a fine natural touch feeling of the surface is obtained. Further, even when a twist of 500 to 800 T / m is put in, the filament in the closed loop portion is not caught, and there is a feeling of bulkiness, firmness and tension, and a fine natural surface feel is obtained.

[0013]

The present invention will be described more specifically with reference to the following examples. FIG. 1 is a model view showing the appearance of a bulky structure yarn according to an embodiment of the present invention. In FIG. 1, A is a high bulky portion in which closed loops are mixed, B is a medium bulky portion in which slack and / or open loops exist, and C is a low bulky portion C in which entangled portions remain. The high bulky portion A, the medium 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, There are one or more parts per inch. Further, it is more preferable that two or more of the bulky portions A, B and C are present.

Next, FIG. 2 shows a method for manufacturing a bulky structured yarn according to an embodiment of the present invention. In FIG. 2, the core yarn unwound from the core yarn package 1 is supplied to the yarn guide 2, the nip roll 3, and the 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 to be combined with the core yarn. The united angle α of the sheath yarn with respect to the core yarn is 1
The range of 5 ° to 105 ° is preferable. The angle β for moving the sheath yarn is preferably 90 ° or less. The hole diameter of the thread guide 4 is preferably about 20 mm to 200 mm.
After the core yarn is combined with the sheath yarn by the yarn guide 4, heat treatment is performed by the hot plate 9 in a state where false twist is applied by the twister (twisting device) 10. Simultaneous drawing false twisting is performed between the nip rolls 3 and 11. Then, the entanglement processing is performed between the nip rolls 11 and 13 by the entangler 12 using the pressure air. Finally, the winding device 15 winds up the winding package 16.

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

Next, the fluid turbulence nozzle 40 shown in FIG. 4 supplies a pressure fluid (for example, air) from the fluid introduction port 41,
The jetting portion 42 discharges the yarn into the hollow cylindrical portion 43 in the yarn feeding direction. The supply multifilament yarn 46 is supplied at an angle from the edge of the hollow cylindrical portion 43, and the collision ball 45
Then, it is taken out along the guide plate 44. In the nozzle, the multifilament constituent fibers are opened and mixed by the jetting of the pressure fluid, and then the collision ball 45
The part where the loop 47 is formed by colliding with the guide plate 4
4 and a portion passing the shortest distance are formed. The portion that passes the shortest distance becomes a highly entangled portion 49,
The portion where the loop 47 is formed passes through a long distance and is converged, so that the loop portion 48 has a bulge.

Next, the fluid turbulent confounding nozzle 50 shown in FIG.
Supplies pressure fluid (for example, air) from the fluid introduction port 51 and jets it into the hollow cylindrical portion 52 in the yarn feeding direction. The supply multifilament yarn 54 is supplied at an angle from the edge of the hollow cylindrical portion 52, and is passed through the yarn guide 53 at an angle or is not drawn. In the nozzle interior 55, the multifilament constituent fibers are opened and mixed by the injection of the pressure fluid, and in addition, a loop is formed. The multifilament yarn that has passed through the yarn guide 53 is provided with an opening portion 56, an entanglement converging portion 57, and a loop portion 58.

In the above, the confounding nozzle 30 shown in FIG.
It is preferable to use the nozzles 40 shown in FIG. 4 in series. In that case, the order may be either first. On the other hand, the nozzle 50 shown in FIG. 5 can be used alone.
In addition, the loop becomes fine by performing the fluid treatment continuously after the simultaneous drawing and false twisting to give the loop. Further, the pressure condition of the pressure fluid (for example, air) of the nozzles 30 to 50 is preferably about 7 to 15 kg / cm ² . That is, the pressure higher than the normal pressure (about 6 kg / cm ² ) is preferable. In addition, the pressure range may be changed in the range of 7 to 15 kg / cm ² , for example, once every minute.

Next, specific examples will be described. (Example 1) (1) As a raw yarn, polyethylene terephthalate (PE
T) Multifilament, fineness: 150 denier, number of filaments: 30 (hereinafter abbreviated as 150D-30f) is used as a core yarn, and PET multifilament, 150D-96f is used as a sheath yarn, and 20 % (Sheath yarn feeding speed is high), simultaneous drawing and temporary twisting were performed, and then the following yarn was obtained using a fluid treatment nozzle that continuously and immediately opened and entangled. (1) Processing conditions Thread speed: 300 m / m Temporary twist number: 1800 T / m Temporary twist temperature: 210 ° C. Core yarn field: 0% Fluid treatment pressure after temporary twist: 9 kg / cm ² Flow rate: 60 liters / mim Nozzle: Fluid Processing Nozzle shown in Fig. 5 (2) Obtained processed yarn Bulked portion A: yarn length difference 15 to 25%, number 52 / inch Bulked portion B: yarn length difference 15 to 25%, number 63 / Inch bulky part C part: yarn length difference 0-3%, number 70 pieces / inch

[0020]

As described above, the bulky structured yarn of the present invention is a bulky structured yarn composed of at least two types of polyester filament yarns, and the yarn length difference between the at least two types of filaments is 10% or more. , A high bulky portion A in which closed loops are mixed, a medium bulky portion B having slack and / or an open loop, and a low bulky portion C including an entangled portion are randomly arranged in the fiber axis direction, and in the C portion. By comparison, the yarn length difference between the constituent fibers of the A part and the B part is large, so that the surface is rich in change and has a natural bulky feel. A knitted fabric with a natural touch can be obtained.

[Brief description of drawings]

FIG. 1 is a model view showing the appearance of a bulky structure yarn according to an embodiment of the present invention.

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

FIG. 3 is a cross-sectional view of an interlacing nozzle used in an example of the present invention.

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

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

[Explanation of symbols]

 A high bulky part where closed loops are mixed B medium bulky part where slack and / or open loop exists C low bulky part 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 Entangler 15 Winder 16 Winding package 30, 40, 50 Entangling nozzle 31, 41, 51 Fluid inlet 32, 43, 52 Hollow cylinder 33, 34 Hollow cylinder Edges 35, 46, 54 Supply multifilament yarn 36 Opening part 37, 38, 49 Entangling part 40 Fluid turbulent nozzle 42 Injection part 44 Guide plate 45 Collision ball 47 Loop 48, 58 Loop part 50 Fluid turbulent confounding nozzle 53 Thread guide 55 Inside nozzle 56 Opening part 57 Entangling convergent part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Nobuo Omae No. 1 Kamiyashiki, Kamimiyake, Heiwacho, Nakajima-gun, Aichi 1 Toray Textile Co., Ltd.

Claims (4)

[Claims] 1. A bulky structure yarn composed of at least two types of polyester filament yarns, wherein a yarn length difference between the at least two types of filaments is 10% or more, and a high bulkiness part A in which a closed loop is mixed, slack and / or Or 3 of a medium bulky portion B having an open loop and a low bulky portion C including an entangled portion
The bulky structure yarn, wherein two portions are randomly arranged in the fiber axis direction and a difference in yarn length between the constituent fibers of the A portion and the B portion is larger than that of the C portion. 2. The yarn length difference between the high bulkiness portion A and the medium bulkiness portion B is 5
The bulky structured yarn according to claim 1, which is in the range of 100% to 100% and the yarn length difference of the low bulkiness portion C is in the range of 0% to 5%. 3. When the load of 1 g / d (denier) is applied in the fiber axis direction, the number of each part of A, B, C is 1 per inch.
The bulky structured yarn according to claim 1, wherein there are one or more yarns. 4. The birefringence Δn of each filament is 120.
It is in the range of ^{x10 -3} or more and 180x10 ^-3 or less.
The bulky structured yarn described in 1.