JP3182314B2 - Method for producing bulky structural yarn - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[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 warp or weft of 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 a 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 "texturing" in the process of dyeing the woven fabric, but the feel of the surface is not sufficient.

In order to solve the above-mentioned conventional problems, the present invention has a natural texture that is rich in surface change, has a natural bulky feeling, and has a fine surface texture even when strong twisting is applied. An object of the present invention is to provide a method for producing a bulky structural yarn capable of obtaining a woven fabric.

[0006]

In order to achieve the above object, a method for producing a bulky structured yarn of the present invention is a method for producing a bulky structured yarn comprising at least two kinds of polyester multifilament yarns. The polyester multi-filament yarn of the above or without a difference in the supply speed, the intersection angle at the time of merging is set to 15 degrees or more and 95 degrees or less, simultaneous false twist or draw false twist, and then the fluid turbulence Simultaneous processing of the following a
Alternatively, by the continuous treatment of the following b, a high bulk portion A in which closed loops are mixed, a middle bulk portion B having a slack or an open loop, and a low volume having a straight shape in the form of a false twisted crimped yarn composed of entanglement and blending. It is characterized by forming a bulky structural yarn comprising the bulky portion C. a. Fluid turbulence releasing pressure fluid in the yarn feed direction
After simultaneous processing of fluid turbulence and entanglement processing by nozzle,
Pass the guide at the outlet of the nozzle and make the yarn at an angle
Take over. b. By the entanglement nozzle which forms the entangled part and the opening part alternately
Processing and fluid that discharges pressure fluid in the yarn feed direction
The turbulent nozzles are arranged in series and continuously processed, and the fluid
At the outlet of the turbulent nozzle, the yarn collides with the ball and is picked up.

[0007]

In the above structure, the at least two kinds of polyester multifilament yarns may be at least one yarn selected from undrawn yarn (UY), semi-drawn yarn (POY), and highly oriented yarn (FOY). preferable.
In the case of a combination of UY-POY, POY-FOY, and UY-POY, it is not particularly necessary to make a supply difference in the supply yarn because the difference in elongation is large.

In the above construction, two or more types of polyester semi-oriented (POY) having a birefringence Δn of each filament yarn in a range of 20 × 10 ⁻³ or more and 80 × 10 ⁻³ or less.
It is preferable to perform simultaneous false-twisting at a false-twist stretching ratio of 100% or more and 200% or less.

In the above construction, two or more types of polyester undrawn yarns each having a birefringence Δn of each filament yarn in a range of 15 × 10 ⁻³ or more and 50 × 10 ⁻³ or less are used.
It is preferable to perform the simultaneous false-twisting at a false-twist stretching ratio of 150% or more and 400% or less.

In the above construction, two or more polyester oriented yarns having a birefringence Δn of each filament in the range of 80 × 10 ⁻³ or more and 150 × 10 ⁻³ or less are used. Is preferably 100% or less.

[0012] In the above structure, at least two kinds of polyester multifilament yarns are relatively 5 filaments.
% Is preferably provided. In the present invention, it is preferable to form a composite yarn having a core-sheath structure, which is composed of two or more filament yarns and has a yarn length difference of 10% or more, preferably 15% or more. Here, the yarn length difference means that two or more filament yarns are decomposed into
The ratio of the length of each filament yarn when a load of g / d (denier) is applied and measured.

Next, three bulky portions (a high bulky portion A, a middle bulky portion B, and a low bulky portion C) are formed. In the above, the high bulky portion A has a closed loop mixed therein. Furthermore, the bulk height is equal to or higher than that of the middle bulkiness portion. The middle bulky portion B consists of a slack or an open loop. The low bulkiness portion C is formed by entanglement and blending of yarn, and the straight shape is a normal false twisted crimped yarn form.

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.

[0015] The fluid processing is preferably a fluid processing apparatus capable of simultaneously achieving confounding and loop processing. In addition, the supply of two multifilaments may be preferably changed during simultaneous false twisting, and one of them may be oversupplied.

[0016]

According to the method of the present invention described above, at least 2
A method for producing a bulky structured yarn comprising at least two types of polyester multifilament yarns, wherein the at least two types of polyester multifilament yarns have a crossing angle of 1 or not with or without a supply speed difference.
5 ° or more and 95 ° or less, perform simultaneous false twist or draw false twist, and then perform fluid turbulence and entanglement as described in a below.
By the time treatment or the continuous treatment of the following b, the high bulk portion A in which the closed loop is mixed, the middle bulk portion B having the slack or the open loop, and the straight shape of the false twisted crimped yarn form which is composed of entangled and mixed fibers. Forming a bulky structural yarn consisting of a low bulky portion C, rich in surface changes, having a natural bulky texture, and a knitted fabric with a fine natural tactile feel on the surface even when strong twisting is applied. Obtainable.

In the above method, the fluid turbulence and the confounding
By simultaneous treatment of the following a or continuous treatment of the following b
By doing so, a bulky structure yarn can be efficiently and reasonably manufactured. a. Fluid turbulence releasing pressure fluid in the yarn feed direction
After simultaneous processing of fluid turbulence and entanglement processing by nozzle,
Pass the guide at the outlet of the nozzle and make the yarn at an angle
Take over. b. By the entanglement nozzle which forms the entangled part and the opening part alternately
Processing and fluid that discharges pressure fluid in the yarn feed direction
The turbulent nozzles are arranged in series and continuously processed, and the fluid
At the outlet of the turbulent nozzle, the yarn collides with the ball and is picked up.

[0018] In the method, at least two kinds of polyester multifilament yarns are used as undrawn yarns (U
Y), at least one yarn selected from semi-drawn yarns (POY) and highly oriented yarns (FOY) can produce a bulky structure yarn with various changes. These yarns may be ordinary disperse dye dyeable yarns or cationic dye dyeable yarns.

In the above, two or more kinds of polyester half-stretched polyesters each having a birefringence Δn of each filament yarn in a range of 20 × 10 ^{−3 to} 80 × 10 ⁻³ and an elongation difference of 30% or more ( POY), when performing false simultaneous twisting in a false twist stretching ratio in the range of 100% or more and 200% or less, POY-
DTY (draw textured yarn) can be more efficiently and rationally manufactured by using a combination of POY yarns.

In the above, two or more kinds of polyester undrawn yarns having a birefringence Δn of each filament yarn in a range of 15 × 10 ⁻³ or more and 50 × 10 ⁻³ or less are used. If the simultaneous drawing false twist is performed in the range of not less than 400% and not more than 400%, it is possible to more efficiently and reasonably produce undrawn yarns.

In the above, two or more polyester oriented yarns having a birefringence Δn of each filament in the range of 80 × 10 ^{−3 to} 150 × 10 ⁻³ are used, and the false twist draw ratio is set to 100. %, The simultaneous false twisting can be performed more efficiently and rationally using highly oriented yarns.

When the bulky structure yarn is used for a warp or a weft of a woven fabric, there are three bulky portions and the structure is strong, so that a woven fabric having a very rich surface change and a natural bulky feeling can be obtained. can get. The same applies to a circular knitted fabric or the like. Further, the closed-loop filament of the portion A is not woven at the texture point of the woven fabric, and can exhibit a fine natural touch on the surface. Furthermore, when a twist of 500 to 800 T / m is inserted, the filament in the closed loop portion is not entangled and has a feeling of bulkiness, a waist and tension, and a fine natural surface feel can be obtained.

[0023]

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.

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 angle β for moving the sheath yarn is preferably in the range of 90 ° or less. The hole diameter of the thread guide 4 is 2 mm to 20 mm.
About 0 mm is preferable. 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, nip rolls 11 and 1
The entanglement process is performed by the entanglement nozzle 12 using the pressurized air between 3. 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 opens the filament and then 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. Multifilament yarn to be supplied (drawing simultaneous false twisting yarn)
54 is supplied at an angle from the edge of the hollow cylindrical portion 52 and is passed through the yarn guide 53 and taken off 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. On the multifilament yarn that has passed through the yarn guide 53, a spread portion 56, an entanglement converging portion 57, and a loop portion 58 are formed.

[0028] 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) Birefringence Δn 20 × 10 ^-3 to 80 × 10 ^-3
The following polyethylene terephthalate semi-drawn yarn (POY) having an elongation difference of 28% was used.

250 denier 48 filaments (150 denier after drawing) core yarn 250 denier 72 filaments (150 denier after drawing) sheath yarn The supply difference between the core yarn and the sheath yarn is set to 10%.
Then, a confounding / mixing and loop imparting treatment were performed.
The conditions are as follows. (1) Yarn speed: 500 m / min (2) Number of false twists: 1950 T / m (3) False twist temperature: 210 ° C. (4) Feed rate of core yarn: -160% (5) Fluid treatment conditions after false twist: Pressure 6 kg / cm ² , flow rate 60 l / min (6) Nozzle type: nozzle shown in FIG. 5 As a result, the following yarn was obtained. High bulkiness A: 65 pieces / m,
Medium bulky part B: 83 pieces / m, low bulky part C: 76 pieces / m. Therefore, the number of each part was 1 piece / inch or more. The difference in yarn length when a load of 1 g / d (denier) was applied was 17%. In addition, when the obtained yarn was used as a warp and a weft of a woven fabric, the yarn had a bulky feeling and a fine feeling could be expressed. Further, the obtained yarn was twisted at 800 T / m and similarly used for warp and weft of a woven fabric. As a result, the yarn had a bulky feeling, a fine touch was developed, and a very good feeling was obtained.

(Example 2) Δn 20 × 10 ^-3 to 80 × 1
The following polyethylene terephthalate semi-oriented yarn (POY) having an elongation difference of 45%, which is between 0 and ^-3, was used.

175 denier 48 filaments (100 denier after drawing) 150 denier 72 filaments (75 denier after drawing) The core yarn and the sheath yarn were supplied at the same time, and there was no difference in supply. Next, stretch false twisting, and subsequently, entanglement / mixing and loop imparting treatment were performed. The conditions are as follows. (1) Yarn speed: 600 m / min (2) Number of false twists: 2300 T / m (3) False twist temperature: 200 ° C. (4) Core yarn feed: -160% (5) Fluid treatment pressure after false twist: 6 kg / Cm ² (6) Nozzle type: same as in Example 1 As a result, the following yarn was obtained. High bulkiness A: 58 pieces / m,
Medium bulky part B: 76 pieces / m, low bulky part C: 85 pieces / m. Therefore, the number of each part was 1 piece / inch or more. The difference in yarn length when a load of 1 g / d (denier) was applied was 17%. In addition, when the obtained yarn was used as a warp and a weft of a woven fabric, the yarn had a bulky feeling and a fine feeling could be expressed. Further, the obtained yarn was twisted at 800 T / m and similarly used for warp and weft of a woven fabric. As a result, the yarn had a bulky feeling, a fine touch was developed, and a very good feeling was obtained.

[0033]

As described above, according to the method of the present invention, there is provided a method for producing a bulky structure yarn comprising at least two kinds of polyester multifilament yarns, wherein the at least two kinds of polyester multifilament yarns are supplied. do not attach or attach a speed difference, and the crossing angle at the time of merging is within 95 degrees 15 degrees, perform alignment false twist draw simultaneous false twisting or pulling, was co Nima a confounding process fluid turbulence continued Is a continuous loop,
Has a high bulky portion A in which is mixed, and has a slack or an open loop.
False twisted crimped yarn composed of medium bulky part B, entangled and mixed fibers
Structure consisting of a low bulky portion C having a straight shape
By forming the yarn, it is possible to obtain a knitted woven fabric having a rich surface change, a natural bulky texture, and a fine natural tactile feel on the surface even when strong twisting is applied.

[Brief description of the drawings]

FIG. 1 is a diagram schematically showing the appearance of a bulky 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]

 A High bulky part with closed loops mixed B Medium bulky part with slack and / or open loop 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 Entangling nozzle 15 Winding machine 16 Winding package 30 Entangling nozzle 31, 41, 51 Fluid inlet 32, 43, 52 Hollow cylindrical part 33, 34 Edge of hollow cylindrical part 35, 34 46, 54 Supply multifilament yarn 36 Spreading part 37, 38, 49 Entangling part 40 Fluid turbulent nozzle 42 Injecting part 44 Guide plate 45 Collision ball 47 Loop 48, 58 Loop part 50 Fluid turbulent entangled nozzle 53 Thread guide 55 nozzle Inside 56 Opening section 57 Confounding converging section

────────────────────────────────────────────────── ─── 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 Toray Textile Co., Ltd. Head Office Tokai Works (58) Field surveyed (Int.Cl. ⁷ , DB name) D02G 1/02 D02G 3/04 D02G 3/24 D02G 3/36 D02J 1/00

Claims (6)

(57) [Claims] 1. A method for producing a bulky structural yarn comprising at least two types of polyester multifilament yarns, wherein the at least two types of polyester multifilament yarns are supplied with or without a supply speed difference.
And crossing angle at the time of merging is within 95 degrees 15 degrees, perform false twisting aligned stretched simultaneously false twisting or pulling, subsequently a confounding process fluid turbulence concurrent or following b below a
By continuous processing, high bulkiness A with mixed closed loops,
Forming a bulky structural yarn comprising a medium bulky portion B having a slack or an open loop, and a low bulky portion C having a straight shape in the form of a false twisted and crimped yarn made of entangled and mixed fibers; Manufacturing method. a. Fluid turbulence releasing pressure fluid in the yarn feed direction
After simultaneous processing of fluid turbulence and entanglement processing by nozzle,
Pass the guide at the outlet of the nozzle and make the yarn at an angle
Take over. b. By the entanglement nozzle which forms the entangled part and the opening part alternately
Processing and fluid that discharges pressure fluid in the yarn feed direction
The turbulent nozzles are arranged in series and continuously processed, and the fluid
At the outlet of the turbulent nozzle, the yarn collides with the ball and is picked up. 2. The method according to claim 1, wherein the at least two types of polyester multifilament yarns are an undrawn yarn (UY) and a semi-drawn yarn (PO).
2. The method for producing a bulky structure yarn according to claim 1, wherein the yarn is at least one yarn selected from Y) and a highly oriented yarn (FOY). 3. The birefringence index Δn of each filament yarn is 20.
The simultaneous simultaneous false twisting is performed by using two or more types of polyester semi-stretched (POY) in the range of × 10 ⁻³ or more and 80 × 10 ⁻³ or less and a false twist stretch ratio of 100% or more and 200% or less. 2. The method for producing a bulky structural yarn according to 1. 4. The birefringence Δn of each filament yarn is 15
× 10 ^-3 or more 50 × using two or more kinds of polyester undrawn yarn in 10 ^-3 or less range, a false twisting draw ratio 150%
The simultaneous stretch false twisting is performed in the range of not less than 400% and not more than 400%.
3. The method for producing a bulky structure yarn according to 1. 5. The birefringence index Δn of each filament yarn is 80.
Using two or more kinds of highly oriented polyester yarns in the range of × 10 ⁻³ or more and 150 × 10 ⁻³ or less, and a false twist stretch ratio of 100
%. The method for producing a bulky structural yarn according to claim 1, wherein simultaneous false twisting is performed in a range of not more than%. 6. The method for producing a bulky structure yarn according to claim 3, wherein a supply speed difference of at least 2% is provided to at least two kinds of polyester multifilament yarns.