JPH10212633A - False twisted composite yarn, its production, and woven or knitted fabric using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a false twisted composite yarn having a reverse part at a single part and capable of manifesting a high stretching properties, for example, by performing a boiling water treatment or a dyeing treatment. SOLUTION: This false twisted composite yarn has single parts A and triple parts B. The single part A comprises a mixture of a normal twisting part A1 having the second yarn 12 singly coiling around the first yarn 11 of an undrawn filament yarn, a reverse twisting part A2 having the first yarn 11 coiling around the second yarn of a drawn filament yarn finer than the first yarn, and a natural twisting part A3 having the first and second yarns 11 and 12 coiling around each other without relation of master and servant in a mixed state. The triple part B is constituted of the second yarn 12 triply coiling around the first yarn 11. The plural single parts A and triple parts B are alternatively constituted in the traveling direction of the yarn. The first yarn 11 and the second yarn 12 are not heat-set at the single part A, thereby the false twisted composite yarn is shrunk by >=3% when the false twisted composite yarn is treated with a boiling water or dyeing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a false-twisted composite yarn obtained by false-twisting a plurality of filament yarns, a method for producing the same, and a woven or knitted fabric using the same.

[0002]

2. Description of the Related Art In Japanese Unexamined Patent Publication No. 7-324242, a novel false twisted composite yarn has been proposed by the present applicant. That is, the false-twisted composite yarn is obtained by false-twisting at least two filament yarns, and the second yarn as the drawn yarn is triple wound around the first yarn as the undrawn yarn. It has a triple part and a single part in which the first yarn and the second yarn are wound in a single layer. Then, in the same overlapping portion, there is a reverse portion where the first yarn is wound around the second yarn, and the reverse portion characterizes a novel design of the false twist composite yarn.

[0003]

However, a 2 (second) heater false twisting machine is used for producing the above false twisted composite yarn, and in addition to the heat setting process at the time of twisting, even after untwisting. The yarn is heat-set. For this reason, the false twisted composite yarns obtained by the processing machine are all shrinkage in Boiling Wate
r) was less than 2%. In other words, the false-twisted composite yarn hardly shrunk even after being subjected to the boiling water treatment or the dyeing treatment, and a woven or knitted fabric having high elasticity could not be obtained.

The present invention has been made in view of the problems existing in the prior art described above, and has an object to have a reverse portion in a single portion and to perform, for example, a boiling water treatment or a dyeing treatment. It is another object of the present invention to provide a novel false-twisted composite yarn exhibiting high elasticity, a method for producing the same, and a woven or knitted fabric using the same.

[0005]

According to the first aspect of the present invention, there is provided a false-twisted composite yarn obtained by false-twisting at least two filament yarns. And a triple portion in which the second thread is wound three times,
And a single part having a reversal part in which the first yarn is wound around the yarn in a single layer, and has a boiling water shrinkage of 3% or more.

According to the second aspect of the present invention, the first undrawn yarn is
This is a method for producing a false-twisted composite yarn in which false twisting is performed on a second yarn as a drawn yarn and a drawn yarn, and after untwisting, the yarn is not heat-set.

According to a third aspect of the present invention, there is provided a woven or knitted fabric using the false twisted composite yarn according to the first aspect. (Function) The false-twisted composite yarn of the present invention having the above-mentioned structure has a single part in which the first yarn is wound around the second yarn in a single layer, that is, a single part having a reversal part whose core-sheath relationship is inverted with respect to the triple part. Is provided. Therefore, the false-twisted composite yarn is excellent in unevenness of the yarn surface, and a woven or knitted fabric using the yarn is rich in volume. Further, the false-twisted composite yarn has a boiling water shrinkage of 3% or more. For example, by performing a boiling water treatment or a dyeing treatment, the yarn is shrunk to exhibit elasticity. Therefore, a woven or knitted fabric using the false-twisted composite yarn is rich in elasticity and soft.

[0008] The false-twisted composite yarn as described above can be obtained by not subjecting the yarn to heat setting after untwisting.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below. FIG. 1A is a diagram schematically illustrating the false twist composite yarn of the present embodiment. The single part A constituting the false-twisted composite yarn is the same as the first yarn 11 which is an undrawn (including half-drawn) filament yarn, but the second yarn 12 (the second yarn 12) which is a filament yarn and a drawn yarn. The thinner than the first thread 11) is preferred.
And a reversing portion A2 in which the first yarn 11 is wound around the second yarn 12 in a single layer, and a normal twist portion A3 in which the first yarn 11 and the second yarn 12 are wound with no relation to the core and sheath. Be mixed. Similarly, the triple part B constituting the false twist composite yarn is configured by winding the second yarn 12 three times around the first yarn 11. Although not shown, the single part A and the triple part B are
A plurality is formed alternately in the running direction of the yarn.

Then, as shown in FIG. 1 (b), the false twisted composite yarn is mainly subjected to a boiling water treatment (for example, immersion in boiling water) or a dyeing treatment (for example, immersion in a high temperature dyeing solution). In the single part A, the first yarn 11 which is an undrawn filament yarn is shrunk, and the total length of the false-twisted composite yarn is shortened by 3% or more as compared with before the boiling water treatment (FIG. 1A). . That is, the boiling water shrinkage of the false twist composite yarn is 3% or more.

Although not shown, the woven or knitted fabric is manufactured using the false-twisted composite yarn having the above structure. For example, when obtaining a woven fabric, the false twist composite yarn of the present embodiment is used for at least one of the warp and the weft. In the yarn stage, the woven or knitted fabric may be subjected to the boiling water treatment or the dyeing treatment (post-dyeing) without performing the boiling water treatment and the dyeing treatment (first dyeing).

The present embodiment having the above configuration has the following effects. (1) The first thread 11 is wound around the second thread 12 in a single layer. That is, the first thread 11 is provided with a single portion A having a reversal portion A2 whose core-sheath relationship is inverted with respect to the other portions A1, A3 and B. . Accordingly, the false-twisted composite yarn is excellent in unevenness of the yarn surface, and a woven or knitted fabric using the yarn is rich in warmth. Further, the false-twisted composite yarn has a boiling water shrinkage of 3% or more. For example, by performing a boiling water treatment or a dyeing treatment, the yarn is shrunk to exhibit high elasticity. Therefore, the woven or knitted fabric using the false-twisted composite yarn is rich in elasticity and soft.

(2) The single part A is a normal rotation part A1, in which the winding form of the first yarn 11 and the second yarn 12 is different from each other.
It is composed of a reversing part A2 and a normal twist part A3.
Therefore, the yarn as a whole has a complicated winding form, and a new texture is created in the woven or knitted fabric.

(3) In obtaining a woven or knitted fabric, when the false-twisted composite yarn and another yarn (single fiber or long fiber) are used by twisting or weaving, the other yarn also has elasticity. It becomes possible to have.

Next, a method for producing the false twisted composite yarn of the present embodiment will be described. As shown in FIG. 2, the first yarn 11 is an undrawn filament yarn,
And the hot pin 22, and is supplied to the twisting section X via the feed roller 23. At this time, the first yarn 11 is drawn by the drawing roller 21 and is in a semi-drawn state. Second
The yarn 12 is a drawn filament yarn which is thinner than the first yarn 11 and is supplied to the twisting section X via the yarn feeding guide 25 by the feed roller 24 while being over-fed by at least 30% from the first yarn 11. , The first thread 11
And joined. Note that the yarn feeding guide 25 is at least 30 m from the yarn running direction line of the first yarn 11 in the twisting area X.
m.

The first yarn 11 and the second yarn 12 joined in the twisting section X pass through the heater 26 and the false twist spinner 27 and enter the untwisting section Y. The yarn that has entered the untwisting section Y passes through the delivery roller 28, and
It is wound up as 2. In the present embodiment, no heat setting processing device such as a heater is arranged in the untwisting section Y, and the heat setting processing is not performed on the untwisted yarn.

The triple part B is twisted according to the first yarn 11
Is formed by the positive deflection of the second yarn 12 in the twisting area X due to the amount of overfeed of the second yarn 12 with respect to the rotation of the false twist spinner 27 and the propagation of the twist of the yarn.

The twisted form of the single portion A is formed when the false-twisted composite yarn is untwisted. This is the first yarn 11
As the second yarn 12
Is formed by performing false twist processing under the above processing conditions using a drawn filament yarn.

The false-twisted composite yarn which is not subjected to the heat setting after the untwisting is a non-drawn yarn in which the first yarn 11 and the second yarn 12 are not heat-fixed in the single portion A. The shrinkability of the certain first yarn 11 is not inhibited.
Accordingly, by subjecting the false-twisted composite yarn to a boiling water treatment or a dyeing treatment, the single part A is mainly shrunk, and the entire length is shrunk by 3% or more, preferably 5% or more. That is, a false twisted composite yarn having a boiling water shrinkage of 3% or more and 5% or more under favorable conditions can be obtained by the manufacturing apparatus.

Next, false twisting was performed using the apparatus shown in FIG. 2 under the following processing conditions. First yarn 11: undrawn yarn of polyester 165 denier 24 filaments Second yarn 12: drawn yarn of polyester 75 denier 24 filaments Number of rotation of false twist spinner 27: 200,000 rpm Number of false twist: 2,265 T / M feed Feed rate of the roller 23: + 14.5% Feed rate of the feed roller 24: -3.5% Overfeed of the second thread 12 with respect to the first thread 11: 1.65 times the first thread 11 by the drawing roller 21 Drawing ratio: 1.4 times Temperature of the heater 26: 210 ° C. Under the above processing conditions, the normal part A1, the reverse part A2, and the normal twist part A3 are generated in the single part A, and the boiling water shrinkage rate is 5%. A new false twist composite yarn could be obtained. In addition, by using the false-twisted composite yarn, a novel woven or knitted fabric that was soft and rich in warmth and elasticity could be obtained.

The knitted fabric may be formed using, for example, the above false twisted composite yarn without departing from the spirit of the present invention. To describe the technical idea that can be grasped from the above embodiment, the single part A is composed of the reverse part A2 and the first part.
And a normal twist portion (A3) in which the second yarn (12) is wound around the first yarn (11) in a single layer, and a normal twist portion (A3) in which the first yarn (11) and the second yarn (12) are wound without the core and sheath. 2. The false twist composite yarn according to 1.

In this manner, the yarn has a complicated winding form as a whole, and a new texture is produced on the woven or knitted fabric.

[0023]

According to the present invention having the above-mentioned structure, a novel temporary soft material which is soft and rich in volume and which exhibits high elasticity by, for example, boiling water treatment or dyeing treatment. A twisted composite yarn and a novel woven or knitted fabric using the same can be obtained.

[Brief description of the drawings]

FIG. 1A is a schematic diagram showing a false twisted composite yarn before a boiling water treatment, and FIG. 1B is a schematic diagram showing a false twisted composite yarn after a boiling water treatment.

FIG. 2 is a schematic view showing a production apparatus for producing a false twist composite yarn.

[Description of Signs] 1 ... first thread, 2 ... second thread, A ... single section, A2 ... reversing section, B ... triple section.

Claims (3)

[Claims] 1. A false-twisted composite yarn obtained by false-twisting at least two filament yarns, wherein a triple portion in which a second yarn is triple wound around a first yarn, and a second yarn. And a single part having a reversal part in which the first yarn is wrapped in a single layer, and has a boiling water shrinkage of 3% or more. 2. A method for producing a false-twisted composite yarn in which a first yarn that is an undrawn yarn and a second yarn that is a drawn yarn are false-twisted, and after untwisting, the yarn is not heat-set. . 3. A woven or knitted fabric using the false twisted composite yarn according to claim 1.