JP2002327342A - Composite false twist yarn, method for producing the same, and woven or knit fabric - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a composite false twist yarn having bulky feeling like a spun yarn, uneven feeling and soft touch, and nevertheless, having excellent shape stability and provide a method or the production of the yarn and a woven or knit fabric produced form the yarn. SOLUTION: The composite false twist yarn having bulkiness, uneven feeling, and excellent shape stability is produced by forming thin parts having a yarn B wound around a yarn A with single turn and nep parts and slub parts having loops wound with multiple turns, winding a yarn C on the outer circumference of the thin parts, nep parts, and slub parts while intermittently forming multiply wound parts. A cloth having good appearance and suppressed rough appearance and touch can be produced by controlling the size and frequency of the slub parts.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite false-twisted yarn having a bulky feeling, a sprinkled feeling, and a soft feel of a spun yarn, a method for producing the same, and a woven or knitted fabric thereof.

[0002]

2. Description of the Related Art Conventionally, as a part of the diversification of clothing materials, various yarn processing techniques using filament yarns are used to provide a material having a spun yarn appearance and texture with high productivity. Have been developed and put into practical use.
For example, while interlacing yarn intermittently to form a slab,
Furthermore, a method using a disturbing fluid treatment technique for the purpose of giving a feeling of yarn spots, a bulky feeling, and a soft texture of a spun yarn by forming loops and fluff in a three-dimensional manner is widely used.

[0003] However, when a disturbance fluid treatment is simply performed, a bulky feeling can be easily obtained due to the formation of loops and fluff, but a so-called fluffy texture may occur, which may cause a problem in commerciality. In contrast, Japanese Patent Application Laid-Open
JP-8146 and JP-A-61-75837 disclose a processing yarn in which an excessively supplied decorative yarn forms a loop and is multiply wound around a core yarn by a method utilizing an air swirling flow. Proposed. However, the method using the air swirl flow has a bulky feeling and a soft texture by winding the loop-shaped decorative yarn around the core yarn, and has an excellent convergence feeling and glossiness in which the fluffy feeling is suppressed. Even if a spun yarn slab yarn can be obtained, the slab formed intermittently often has insufficient form stability, and furthermore, because of the frequent slab frequency, a relatively rough appearance and texture. I tended to be.

[0004]

DISCLOSURE OF THE INVENTION The present invention solves these problems and provides a composite false twisted yarn which is excellent in form stability while having a bulky feeling, yarn spotting feeling, and a soft texture of a spun yarn. And a method for producing the same, and a woven / knitted material thereof. Furthermore, by controlling the size and frequency of the slab portion formed on the processed yarn, it is possible to obtain a fabric having a good appearance effect and a rough appearance and a suppressed texture. And a method for producing the same and a woven or knitted material thereof.

[0005]

The gist of the present invention is a composite false twisted yarn composed of three or more filament yarns, wherein a yarn B is wound around a yarn A in a single layer. And a loop having a nap portion and a slab portion wrapped around multiple times, and the yarn C is wound around the details and the outer periphery of the nap portion and the slab portion while intermittently forming a multiple winding portion. A composite false twisted yarn is characterized in that:

A second gist of the present invention is that the yarn A is caused to travel along the center axis of the swirling flow nozzle so that the yarn A does not directly collide with the yarn A, and the yarn B is On the other hand, in the manufacturing method in which the yarn is supplied into the nozzle under the oversupply condition, the loop of the yarn B is wound around the yarn A multiple times, and then the false twist is performed, the supply ratio of the yarn B to the yarn A is increased. Is set to 120% or more, and then the yarn C is intermittently wrapped around the yarn taken out of the nozzle in a multiple-twisting manner to perform false twisting.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings. FIG. 1 is a schematic view showing an example of the yarn form of the composite false twisted yarn of the present invention. The composite false twisting yarn of the present invention,
It has a detail (X) in which the yarn B is wound around the yarn A in a single layer, a nep portion (Y) and a slab portion (Z) in which the loop is wound multiple times, and further, the yarn C Is characterized in that it has a fiber structure wound intermittently while forming multiple wraps around the outer periphery of the details and the NEP and the slab.

That is, the present invention has another problem that the conventional false false twisted yarn formed with a nep portion and a slab portion has poor shape stability, specifically, the problem that the nep portion and the slab portion are liable to slip. Of the yarn C of the detail (X) and the nep portion (Y)
It is solved by intermittently winding around the outer circumference of the slab (Z) and preventing the collapse of the form of the yarn, strengthening the morphological stability of the whole composite false twisted yarn, and more complex. It has succeeded in the development of a composite false twisted yarn to which a smooth yarn feeling is imparted. Further, the present invention reduces the formation of a slab portion that tends to give a relatively rough appearance and texture during fabric formation as compared with a conventional false twisted yarn, and simultaneously forms a nep portion, This makes it possible to obtain a bulky feeling, a feeling of thread spots, and a soft texture while suppressing a smooth appearance and texture.

The average fineness ratio of the slab portion / (detail and nep portion), which is an important factor in the development of the properties of the composite false twisted yarn of the present invention, is set in consideration of the appearance and the like of the target fabric. From the point of exhibiting a better fabric appearance as a post-process passability or a processed yarn for clothing, from 2.0 to 6.0,
More preferably, it is better to be 3.0 or more and 5.0 or less.
The average fineness ratio of the slab part / (detail and nep part) is ± 0.5 cm (sampling length 1 cm) about the thickest part of any slab part for the slab part.
Regarding (details and nep part), 5 cm of 5 cm of any part other than the slab part was sampled at five points each, and the weight of each sample was measured at a temperature of 20 ° C. and a humidity of 65%.
It is determined from the average weight per unit length of each of the slab and (detail and nep).

In addition, the composite false twisted yarn of the present invention exhibits a bulky feeling, a spot feeling, and a soft feel of a spun yarn which are characteristics of the spun yarn, and a nep portion is formed to suppress a rough feel. On the other hand, it is important to reduce the frequency of forming the slab portion, but the conditions for forming the slab portion and the nep portion are appropriately set within a range satisfying the object of the present invention. The preferred average number of slabs is 0.3 or more per 10 m of yarn.
Or less, more preferably 1 or more and 2 or less. On the other hand, the number of nep portions may be set in the range of 10 or more and 80 or less in average per m, but is preferably 15 or more and 70 or less.

In the composite false twisted yarn of the present invention, the average length of the slab portion and the nep portion is not particularly limited and may be set according to the desired appearance and texture, but the preferred average length of the slab portion is It is 1.0 cm or more and 5.0 cm or less, and more preferably 2.0 cm or more and 4.0 cm or less. Also, regarding the preferable average length of the nep portion,
0.05 cm or more and less than 1.0 cm, more preferably 0.1 cm or more.
It is 1 cm or more and 0.8 cm or less.

Incidentally, the material of the filament yarn constituting the composite false twisted yarn of the present invention is not particularly limited, and may be selected according to the purpose. For example, cellulosic fiber such as rayon, semi-synthetic fiber such as acetate, synthetic fiber such as polyester, nylon, acrylic, polypropylene, etc., and any processed yarn such as air entangled yarn, twisted yarn, false twisted yarn of each fiber. Can also be used. Also,
The cross-sectional shape, fineness, dyeing characteristics, and the like are not particularly limited, and are selected according to a desired texture, a fabric appearance, a color tone effect, and the like. For example, when the composite false twisted yarn of the present invention is constituted by combining filament yarns having different dyeing properties, such as a combination of a disperse dye dyeable filament yarn and a cationic dye dyeable filament yarn,
It is also possible to obtain effects such as a feeling of discolored spots and a mottled design effect.

Further, the yarn A and / or the yarn B
Two or more filament yarns may be used. For example,
By combining yarns with different properties such as different polymer, different dyeability, different fineness, different single fiber fineness, etc., it is possible to add additional features such as unevenness, texture, and color difference as described above Becomes Further, two or more filament yarns may be combined in any form, and for example, can be used as a yarn form such as a drawn-up yarn, a ply-twisted yarn, or an interlaced yarn. Furthermore, a combination method such as drawing, twisting, and entanglement can be performed in a separate step and / or a continuous step from the method for producing a composite false twisted yarn of the present invention.

Next, an example of the method for producing a composite false twisted yarn of the present invention will be described with reference to FIGS. In the composite false twisted yarn of the present invention, the yarn A travels through the magnet tensor 4 in the center of the swirling fluid region of the swirling flow nozzle 5, and the yarn B is oversupplied to the yarn A via the feed roller 6. Under the conditions, the yarn is supplied into the nozzle, the yarn B is wound around the yarn A, and is taken out from the nozzle as a united yarn. Next, the united yarn including the yarn A and the yarn B is used as a core yarn, and is passed through the first heater 12, the false twisting device 13, the first delivery roller 14, the second heater 15, the second delivery roller 16, and the wind roller. At the time of false twisting to be wound at 17, the yarn C is supplied from the feed roller 10 and
False twisting is performed while traversing the united yarn.

In the method for producing a composite false twisted yarn of the present invention, it is necessary that the supply ratio of the yarn B to the yarn A is 120% or more, preferably 150% or more. If the supply rate is less than 120%, the supply amount of the sheath yarn is insufficient, so that the average number of formed neps is insufficient, and it is difficult to obtain each characteristic of the spun yarn tone. Further, in the method for producing a composite false twisting yarn of the present invention, a false twisting process for intermittently winding the yarn C intermittently around the united yarn taken out from the swirling flow nozzle is performed. By this processing, the yarn C is intermittently wound multiple times around the details and the outer periphery of the nep portion and the slab portion, preventing the shape of the yarn from collapsing, and stabilizing the shape of the composite false twisted yarn as a whole. And a more complicated feeling of thread spots is imparted.

The size and frequency of the nep portion and the slab portion include the difference in fineness between the yarn A and the yarn B, the tension immediately before the nozzle A is supplied to the yarn A, the supply rate of the yarn B, the air supply pressure, and the like. Selection of conditions, a method of intermittently changing the amount of supply of yarn B, such as a method of temporarily storing yarn B in a limited area, a method of changing the rotation speed of a feed roller, and the like. It can be adjusted by using.

For example, as in the example of the manufacturing method shown in FIG. 2, the operation of pulling out the yarn B between the guides 7 and 8 perpendicularly to the yarn path by the pull-out guide 9 and then removing the yarn B from the pull-out guide is performed. A method of controlling the frequency of the slab portion (Z) by changing the supply amount intermittently by adding the slab portion and instantaneously forming the winding of the yarn B can be used. The swirl flow nozzle used in the present invention generates a swirl flow by compressed air in the nozzle, and the yarn B is excessively sucked and supplied without directly colliding with the yarn A,
The shape and type of the yarn B are not particularly limited as long as the yarn B has a space wound around the yarn A while forming a closed loop shape.

FIG. 3 is a schematic view showing an example of the swirling flow nozzle 5. The nozzle used in the present invention comprises a core yarn inlet hole 18, a core yarn outlet hole 22, a sheath yarn inlet hole 19, an air inlet hole 20, and an air swirling flow space 21.
And the yarn B is introduced into the sheath yarn introduction hole 1.
9, merges with the air introduction hole 20 on the way, is jetted in the tangential direction of the air swirling flow space 21 without directly hitting the yarn A, and forms a large closed loop and the loop It is wound around and is integrally pulled out from the core yarn outlet hole 22.

In the woven or knitted fabric using the composite false twisted yarn of the present invention, the mixing ratio and the woven or knitted fabric structure may be determined within a range in which a desired texture and product appearance can be obtained. Further, a woven or knitted fabric comprising the composite false twisting yarn alone of the present invention, or a woven or knitted fabric comprising a ply twisted yarn of the processed yarn and another fiber, a cross-knitted woven fabric using the processed yarn as a part of the woven or knitted fabric, Various woven and knitted articles can be obtained within a range in which the effect of the composite false twisted yarn of the present invention can be obtained.

[0020]

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples.

Example 1 A polyester filament yarn having 84 dtex and 36 filaments was used for the yarn A, and a polyester filament yarn having 33 dtex and 12 filaments was used for the yarns B and C, under the following conditions. To obtain a composite false twisted yarn.

"Twinning conditions" Processing machine: Model LS-6 manufactured by Mitsubishi Heavy Industries, Ltd. Processing speed: 50 m / min Supply tension of yarn A: 22 cN Supply rate of yarn B: 300% Distance between guides 7 to 8 : 120 mm Yarn B withdrawal distance: 300 mm Yarn B withdrawal frequency: 8 times / min Outline of swirling flow nozzle structure: See Fig. 3 Nozzle supply air pressure: 0.2 MPa Yarn C supply rate: 116% (yarn Supply guide distance of yarn C: 100 mm Heater temperature: 215 ° C./220° C. Number of false twists: 2300 T / m (S direction) Twisting tension / untwisting tension: 27 cN / 53 cN

The processed yarn obtained by this method is a yarn A
The yarn B is wrapped around the single details, and the NEP part and the slab part where the loop is wrapped multiple times are formed in the yarn longitudinal direction, and the yarn C is intermittently wrapped multiple times. While forming the portion, the yarn A was in the form of a yarn wound around the outer periphery of the yarn A and the yarn B. The average fineness ratio of the slab portion / (detail and nep portion) of the processed yarn is 3.7, and the average number of the slab portions is 1.0 per 10 m.
Six, the average number of the nep portions was 60 per m, the average length of the slab portion was 2.0 cm, and the average length of the nep portion was 0.2 cm.

Using the above processed yarn, weaving was performed under the following weaving conditions. "Weaving conditions" Warp: Polyester filament yarn 56 dtex / 36 filament Warp density (60 birds / 3 yarns / 3.78 cm) Weft yarn: Inventive yarn Weft yarn density (60 yarns / 2.54 cm) Structure: plain weave

The obtained woven fabric is composed of a low-frequency slab portion and a high-frequency nep portion, and has a rough appearance, a fluffy texture, a bulky feeling, a mottled feeling, and a soft texture of a spun yarn. A woven fabric was obtained. Further, during weaving, there was no shear movement of the slab portion and the nep portion, and no problem was observed in the post-process passability.

Example 2 Using the same yarn as in Example 1 above, false twisting was performed under the following conditions to obtain a composite false twisted yarn. "Twinning conditions" Processing machine: LS-6 type manufactured by Mitsubishi Heavy Industries, Ltd. Processing speed: 50 m / min Supply tension of yarn A: 18 cN Supply rate of yarn B: 200% Distance between guides 7 to 8: 120 mm yarn Pull-out distance of yarn B: 300 mm Frequency of drawing yarn B: 8 times / min Outline of swirling flow nozzle structure: See FIG. 3 Nozzle supply air pressure: 0.2 MPa Supply rate of yarn C: 108% (for yarn A) T) Feed guide distance of yarn C: 100 mm Heater temperature: 215 ° C / 220 ° C Number of false twists: 1500 T / m (S direction) Twisting tension / untwisting tension: 27 cN / 50 cN

As in Example 1, the obtained processed yarn has a detail in which the yarn B is wound around the yarn A in a single manner, and a nep portion and a slab portion in which the loop is wound multiple times. It is formed in the longitudinal direction of the yarn, and has a yarn form in which the yarn C is wound around the outer periphery of the yarn A and the yarn B while intermittently forming a multiple winding portion. there were. Also,
The average fineness ratio of the slab / (detail and nep) is 3.2
And the average number of slabs is 1.7 per 10 m,
The average length of the slab is 2.35 cm, the average number of neps is 60 per m, and the average length of the neps is 0.3 c.
m.

Using the above processed yarn, weaving was performed under the following weaving conditions. "Weaving conditions" Warp: Polyester composite false twisted yarn Warp density (40 birds / 2 threads / 3.78 cm) Weft: Present thread Weft density (60 threads / 2.54 cm) Structure: Twill Weave Formed with low-frequency slabs and high-frequency neps, without a rough appearance or a rough texture,
A woven fabric having a spun yarn-like bulky feeling, yarn spotting feeling, and soft texture was obtained. Further, during weaving, there was no shear movement of the slab portion and the nep portion, and no problem was observed in the post-process passability.

[Comparative Example 1] Using the same yarn as in Example 1, processing was performed under the same conditions except for the supply of the yarn C, and a false twisted yarn was obtained. The obtained processed yarn was obtained in the same manner as in Example.
Although the loop of the NEP and the slab formed by multiple windings are formed in the longitudinal direction of the yarn, the form of the NEP and the slab is unstable, so that the guide contacts and irons in the subsequent process. Inconveniences such as deformation and movement of the position occurred, and the removability of the yarn was extremely difficult, so that the post-process passing property was poor.

[Comparative Example 2] Using the same yarn and apparatus as in Example 1, processing was performed under the following conditions. The obtained processed yarn had an intermittently formed slab portion formed by loops wound multiple times, but did not form a nep portion. "Twinning conditions" Processing machine: Model LS-6 manufactured by Mitsubishi Heavy Industries, Ltd. Processing speed: 50 m / min Supply tension of yarn A: 24 cN Supply ratio of yarn B: 100% Distance between guides 7 to 8: 120 mm yarn Draw-out distance of yarn B: 300 mm Draw-out frequency of yarn B: 4 times / min Outline of swirling flow nozzle structure: See FIG. 3 Nozzle supply air pressure: 0.2 MPa Supply rate of yarn C: 100% (for yarn A) T) Supply guide distance of yarn C: 100 mm Heater temperature: 215 ° C./220° C. Number of false twists: 2300 T / m (S direction) Twisting tension / untwisting tension: 27 cN / 53 cN Although it was a slab part, the rough appearance and the rough texture were suppressed, but since there was no nep part, the bulky feeling, yarn spot feeling and soft texture of the spun yarn tone were insufficient.

[0031]

As described in detail above, according to the present invention, the details in which the yarn B is wound around the yarn A in a single layer, and the nep portion and the slab in which the loop is wound multiple times are provided. The slab has excellent thread form stability because the thread C is wound around the details and the outer periphery of the nep and slab while forming the multiple winding section intermittently. And a composite false twisted yarn having a large number of neps, a method for producing the same, and a woven / knitted material thereof. Furthermore, by giving excellent convergence and controlling the formation of the slab to reduce the frequency, it gives the fabric an unprecedented spun yarn tone bulkiness, yarn spotting, soft texture, and a good appearance to the fabric. It is also possible to obtain a composite false twisted yarn that can be used. Therefore, the industrial value of the present invention is high and its significance is extremely large.

[Brief description of the drawings]

FIG. 1 is a partial schematic view showing an example of a yarn form of a composite false twisted yarn of the present invention.

FIG. 2 is a schematic view showing an example of a method for producing a composite false twisted yarn of the present invention.

FIG. 3 is a side sectional view and an AA 'line sectional view showing an example of a swirling flow nozzle used in the present invention.

[Explanation of symbols]

 X Details Y Nep Z Z Slab 1 Yarn A 2 Yarn B 3 Yarn C 4 Magnet tensor 5 Swirling flow nozzle 6 Feed roller 7 Guide 8 Guide 9 Pull-out guide 10 Feed roller 11 Supply guide 12 First heater 13 False twist Tool 14 First delivery roller 15 Second heater 16 Second delivery roller 17 Wind roller 18 Core yarn inlet hole 19 Sheath yarn introduction hole 20 Air introduction hole 21 Air swirl flow space 22 Core yarn exit hole

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4L036 MA04 MA33 MA39 PA05 PA47 RA27 RA28 UA02 4L048 AA21 AB09 AB18 AB21 BA01 BA02 DA01

Claims (6)

[Claims] 1. A composite false twisted yarn comprising three or more filament yarns, wherein a yarn B is wrapped around a yarn A in a single layer, and a loop is wrapped multiple times. A composite temporary fabric having a nep portion and a slab portion, wherein the yarn C is wound around details and an outer periphery of the nep portion and the slab portion while intermittently forming a multiple winding portion. Twisted yarn. 2. The composite false twisted yarn comprising the yarn A, the yarn B and the yarn C has an average fineness ratio of slab portion / (detail and nep portion) of 2.0 or more and 6.0 or less. 2. The composite false twisted yarn according to 1. 3. The average number of slabs per 10 m of a composite false twisted yarn comprising yarn A, yarn B and yarn C is 0.3.
3. The composite false twisted yarn according to claim 1, wherein the number is 3 or more and 3 or less, and the average number of neps per 1 m is 10 or more and 80 or less. 4. 4. The composite false twisted yarn comprising the yarn A, the yarn B and the yarn C, wherein the average length of the slab portion is 1.0 cm or more.
0 cm or less, and the average length of the nep portion is 0.0
The composite false twisted yarn according to any one of claims 1 to 3, which is 5 cm or more and less than 1.0 cm. 5. The yarn A travels along the central axis of the swirling flow nozzle so that the yarn A does not directly collide with the yarn A, and the yarn B is supplied to the yarn A under an oversupply condition. In a method for producing a processed yarn in which a loop of the yarn B is wound around the yarn A in multiple layers and then false-twisted, the supply rate of the yarn B to the yarn A is set to 120% or more. Next, a false twisting process is performed while the yarn C is intermittently and multiplely wound around the yarn taken out from the nozzle. 6. A woven or knitted fabric comprising the composite false twisted yarn according to any one of claims 1 to 4.