JP2898174B2 - Tsumugi-like composite processed 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 natural and swelling pongee-like composite processed yarn comprising at least two thermoplastic synthetic fiber multifilaments and a method for producing the same.

[0002]

2. Description of the Related Art Several methods have been proposed for obtaining a pongee-like composite processed yarn using synthetic fibers. For example, in Japanese Patent Publication No. 61-31219, using two polyester filament yarns, the other yarn is supplied to the false twisting and twisting zone of one yarn while periodically vibrating, and then false twisting is performed. Has proposed a core-sheath yarn in which a single wound portion and a triple wound portion are alternately formed. Japanese Patent Publication No. 59-29689 also discloses that two polyester filament yarns are used in the same manner as described above, and one yarn is excessively supplied to the false twisting and twisting zone while periodically vibrating. A core-sheath yarn in which single-wound portions and triple-wound portions are alternately formed by twisting has been proposed.

[0003]

However, the above-mentioned conventional pongee-like composite processed yarn is a core-sheath yarn in which a single-wound portion and a triple-wound portion are alternately formed. The thread occupies the sheath. Therefore, even if there is unevenness in thickness, the woven or knitted fabric after dyeing is dominated by the color of the sheath yarn appearing on the surface and becomes monotonous, making it difficult to form a pongee-like fabric with a natural unevenness and swelling Met. Therefore, it has been desired for many years to improve the pongee-like composite processed yarn.

[0004] In order to solve the above-mentioned conventional problems, the present invention has a feeling of swelling and a natural unevenness, and a woven or knitted fabric after dyeing has a rich color change and a refreshing feeling. An object of the present invention is to provide a pongee-like composite processed yarn that can be expressed and a method for producing the same.

[0005]

In order to achieve the above-mentioned object, the composite yarn of the present invention is a false twisted composite yarn having a core-sheath structure composed of at least two types of thermoplastic synthetic fiber multifilaments A and B. In the false twist composite yarn, a single wound portion and a triple wound portion are alternately formed in the length direction of the yarn, and the A component yarn forms a sheath yarn portion in the single wound portion, In the triple wound portion, the B component yarn forms a sheath yarn portion.

In the above construction, the single-wound portion has the sheath yarn of the A yarn, and the actual twist number is 500 T / M or more and 1500 or more.
T / M or less, and the difference in yarn length between A and B is 1.02 ≦
It is preferable that A / B ≦ 1.1 and that the triple wound portion has the triple wound B yarn.

Next, the method for producing a pongee-like composite processed yarn of the present invention is a method for producing a false-twisted composite yarn having a core-sheath structure comprising at least two kinds of thermoplastic synthetic fiber multifilaments A and B, The birefringence △ n of the yarn is 30 × 10 ^-3 ~
70 × 10 ^-3 part and Δn are 120 × 10 ^{-3 to} 160 ×
A polyester filament yarn in which a portion of 10 ^-3 is mixed in the length direction of the yarn is used.
^10-3 using the polyester filaments consisting to 140 × 10 ^-3, doubling the upstream side of the heating region of the false twisting step of the A yarn, the A yarn while cyclically vibrate the B yarn Thereafter, the combined yarn is subjected to false twist processing.

In the above construction, a highly oriented polyethylene terephthalate unoriented yarn (POY) is used as the A yarn.
A portion where the birefringence △ n is 30 × 10 ^-3 to 70 × 10 ^-3 and △
It is preferable that a portion where n is 120 × 10 ^{−3 to} 160 × 10 ⁻³ forms a filament yarn mixed in the length direction of the yarn in a previous step or a separate step following the false twisting step.

[0009]

According to the construction of the present invention described above, the false twist composite yarn has a single wrap portion and a triple wrap portion alternately formed in the length direction of the yarn, and the single wrap portion has an A component yarn. Forms a sheath yarn portion, and in the triple wound portion, since the B component yarn forms the sheath yarn portion, there is a feeling of swelling and natural unevenness, and a woven or knitted fabric after dyeing. Is rich in color change and can express a cool feeling. That is, the sheath yarn B is conventionally wound around the core yarn A in the single winding portion, but in the present invention, in the single winding portion, the A yarn, which is conventionally the core yarn, is wound around the B yarn. Therefore, the A yarn and the B yarn appear alternately on the surface layer of the yarn. In other words,
The core-sheath is alternately reversed to form a composite yarn. As a result, the woven or knitted fabric after dyeing is rich in variability in color and changes in unevenness in thickness are structurally diverse, and can give a feeling of swelling and natural unevenness.

In the single-wound portion, the A yarn is a sheath yarn, the actual twist number is in the range of 500 T / M or more and 1500 T / M or less, and the yarn length difference between A and B is 1.02 ≦ A / B ≦ 1.1
According to the preferred configuration in which the triple wound portion is wound three times, the triple wound portion further has a feeling of swelling and natural unevenness, and the woven or knitted fabric after dyeing has a color It is rich in variability and can express a cool feeling.

Next, according to the structure of the manufacturing method of the present invention, A
Polyester filament in which a portion of birefringence Δn of 30 × 10 ⁻³ to 70 × 10 ^{−3 and} a portion of Δn of 120 × 10 ^{−3 to} 160 × 10 ⁻³ are mixed in the length direction of the yarn A polyester-based filament having a birefringence Δn of 100 to 140 × 10 ⁻³ is used as the B yarn, and the B yarn is cycled upstream of the heating region in the false twisting step of the A yarn. The yarn is combined with the yarn A while being vibrated, and then the twisted yarn is subjected to false twist processing, whereby the pongee composite processed yarn can be efficiently and rationally manufactured. That is, the single-wound portion and the triple-wound portion alternately coexist in the length direction of the yarn, resulting in a pongee-like yarn.
≦ A / B ≦ 1.1, it is possible to express a feeling of swelling instead of simply a hard fabric.

Further, polyethylene terephthalate is used as the yarn A.
Rate highly oriented undrawn yarn (POY), and birefringence Δn
Is 30-70 × 10^-3Part and Δn are 120-160 ×
10 ^-3Filament yarn where the part is mixed in the length direction of the yarn
Is formed in a pre-process that is continuous with the false twisting process or in a separate process.
According to a preferred configuration of the method of the present invention,
This makes it possible to efficiently and reasonably manufacture the kumiko style composite processed yarn. sand
That is, the birefringence Δn of the A component yarn is 30 to 70 × 10^-3of
Part and Δn = 120-160 × 10^-3Along the length of the thread
Because they are mixed, a natural unevenness can be exhibited.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described more specifically with reference to the drawings. FIG. 1 is a schematic view showing the appearance of a yarn according to one embodiment of the present invention. In FIG. 1, a hatched thread is referred to as an A thread, and a white thread is referred to as a B thread. As shown in FIG. 1, it is a false twist composite yarn having a core-sheath structure composed of two thermoplastic synthetic fiber multifilaments. Then, in the single-wound portion (a), the A yarn becomes a sheath yarn and the actual twist number is from 500 T / M to 1500 T / M.
The yarn A is wound with a yarn length difference of 1.02 ≦ A / B ≦ 1.1, and the A yarn is scattered as a whole. On the other hand, in the triple wound portion (b), the A thread becomes the core thread and the B thread is triple wound.

Next, FIG. 2 shows an example of the manufacturing method of the present invention. In FIG. 2, 1 is an A yarn which is a raw yarn to be supplied, 2 is a B yarn which is a raw yarn to be supplied, 3, 4, 5, 8, and 10 are feed rollers (nip rollers), 6, 9 are heat fixing devices, 7
Is a twisting device (for example, a spindle), 11 is a winding roller, and 12 is a yarn package. Reference numeral 13 denotes a periodically vibrating thread portion.

As the raw yarn to be supplied, a highly oriented polyethylene terephthalate undrawn yarn (POY) is used as the A yarn 1, which is drawn in advance between the nip rollers 3 and 4, and supplied from the roller 4 to the false twist area. You. As another method, stretching is performed in advance in a separate step instead of a series of processing to obtain a birefringence index.
n is 30 to 70 × 10 ^-3 and Δn = 120 to 160
Create a yarn in which the × 10 ^-3 part is mixed in the length direction of the yarn,
It is also possible to supply directly to the roller 4. As the B yarn 2, a drawn yarn is used.

As a production method by the above-mentioned step, the A yarn (POY) 1 is drawn by rollers 3 and 4 and supplied to the false twisting area 14 by rollers. The B yarn 2 is over-fed by rollers 5 to 13 parts of the periodically oscillated composite yarn.
Supply at 0%. Here, according to the false twisting condition, the B yarn is twisted while periodically vibrating along the A yarn as indicated by the arrow 13 and false twisted, so that the single wound portion and the triple wound portion alternate. It becomes the formed composite yarn.

Thereafter, the secondary heat-fixing device 9 cuts the heat to reduce the stock of the yarn, and the winding roller 11 winds the yarn around the package 12 to form the ponged composite yarn 12.

Considering the generation mechanism of the pongee-like composite processed yarn in the false twisting section 14, the conventional Japanese Patent Publication No. 61-31 is considered.
In Japanese Patent No. 219, a single-wound portion and a triple-wound portion are alternately generated by supplying a sheath yarn with a constant overfeed to a core yarn. Both the part and the triple wound part become a composite yarn wound around the sheath part. However, in this embodiment, POY is used for the A yarn to perform constant stretching, and the A yarn has a natural stretching elongation described later, so that the A yarn has a natural stretching elongation in the single wound portion. On the contrary, the A thread forms a sheath thread portion. In the triple winding portion, the A yarn becomes a core yarn by winding the B yarn three times.

Here, the natural stretching elongation will be described. Normal P
When the SS curve (strong elongation curve) of OY is drawn, it becomes as shown in FIG. 3A, and the drawn yarn becomes as shown in FIG. 3B. The part shown in FIG. 3A is a natural stretching elongation ND at a constant strength and elongation.

(Example 1) Polyethylene terephthalate partially drawn yarn (POY) (A) having a total fineness of 125 denier and 36 filaments wound at a spinning speed of 3000 m / mm and a total weave of 30 denier, filament Number: Twenty-four drawn polyethylene terephthalate yarns (B) were processed using the apparatus shown in FIG. The main conditions are as follows. (1) Drawing conditions of feed rollers 3 and 4 1.5 times (2) False twist feed rate -5% (3) False twist number 2600 T / M (4) Feed rate of sheath yarn (B yarn) + 63% (5) Heat fixing device temperature of false twist part 200 ° C (6) Relaxing part heat fixing device temperature 200 ° C (7) Relax feed rate 20% (8) Winding feed rate + 5% (1) The yarn A is birefringent under the drawing conditions of (1). Rate △ n = 30-70 ×
It was confirmed that the portion of 10 ^{-3 and} the portion of Δn = 120 to 160 × 10 ^-3 were mixed in the length direction of the yarn. Next, in the cyclically vibrating yarn section 13, the B thread performs a vibrating motion right and left along the A thread in the drawing, so that a single wound portion and a triple wound portion can be formed alternately. The average length of one unit of the single winding part is 2
8.6 cm, the same length of the triple wound portion was 7.2 cm. In the single wound portion, the A yarn became a sheath yarn, the number of twists was 1070 T / M, and the yarn length difference was 7%, and the A yarn was wound. At the same time, in the single-wound portion, the birefringence △ n = 3
0-70 × 10 ^-3 and Δn = 120-160 × 10
^Since the yarn of ^-3 portion was supplied to the false twisting area, the composite yarn had unevenness.

The triple wound portion had a form in which the B yarn was wound three times. When the processed yarn was dyed into a woven fabric, the color tone was rich in variability, and there was a feeling of swelling and a feeling of natural unevenness along with a feeling of refreshing.

Comparative Example 1 A drawn polyethylene terephthalate yarn having a total fineness of 75 denier and 36 filaments and a drawn polyethylene terephthalate yarn having a total fineness of 50 denier and 24 filaments were processed under the following conditions. Was performed. (1) False twist feed rate + 4% (2) False twist number 2500 T / M (3) Sheath yarn feed rate + 52% (4) Heat fixing device temperature of false twist portion 190 ° C (5) Relax portion heat fixing device temperature 190 ° C (6) Relax feed rate 20% (7) Winding feed rate + 5% When false twisting was performed under the above conditions, single-wound portions and triple-wound portions were alternately generated, but single-wound portions In each of the triple-wound portions, 50 denier 24 filaments formed a sheath portion, resulting in a tight winding without a difference in yarn length. When this was made into a woven fabric, it was a swelling-free and uniform-grained uniform cloth as compared with the product of this example.

As described above, the A yarn becomes a sheath yarn in the single wound portion, and the yarn length difference between A and B is 1,02 ≦ A / B ≦ 1,1 with the number of twists of 500 to 1500 T / M. Due to this, it has a swelling feeling in addition to the sharpness peculiar to the pongee thread. Also, A
The yarn has a birefringence Δn of 30 to 70 × 10 ⁻³ and Δn =
Since the portion of 120 to 160 × 10 ⁻³ is mixed in the length direction of the yarn, the yarn has a natural unevenness, and a woven or knitted fabric with a more natural feeling can be produced.

[0024]

As described above, according to the present invention, the false-twisted composite yarn has a single-wound portion and a triple-wound portion alternately formed in the length direction of the yarn. Forms a sheath yarn portion, and in the triple wound portion, since the B component yarn forms the sheath yarn portion, there is a feeling of swelling and natural unevenness, and a woven or knitted fabric after dyeing. Is rich in color change and can express a cool feeling.

In the single-wound portion, the A yarn is a sheath yarn, the actual twist number is in the range of 500 T / M or more and 1500 T / M or less, and the difference in yarn length between A and B is 1.02 ≦ M. A / B ≦
According to a preferred configuration in which the triple-wound portion is in the range of 1.1 and the B-thread is triple-wound, the woven and knitted fabric after dyeing has a feeling of swelling and natural unevenness. Is rich in color change and can express a cool feeling.

Next, according to the manufacturing method of the present invention, the yarn A has a birefringence index Δn of 30 × 10 ⁻³ to 70 × 10 ⁻³ and Δn
Using a polyester filament yarn in which a portion of 120 × 10 ^{−3 to} 160 × 10 ⁻³ is mixed in the length direction of the yarn;
A polyester filament having a birefringence Δn of 100 to 140 × 10 ⁻³ is used for the yarn, and the yarn B is periodically vibrated on the upstream side of the heating area in the false twisting process of the yarn A. By combining the yarn A with the yarn A and then subjecting the combined yarn to false twist processing, the pongee-like composite processed yarn can be efficiently and rationally manufactured.

Further, polyethylene terephthalate is used as the yarn A.
Rate highly oriented undrawn yarn (POY), and birefringence Δn
Is 30-70 × 10^-3Part and Δn are 120-160 ×
10 ^-3Filament yarn where the part is mixed in the length direction of the yarn
Is formed in a pre-process that is continuous with the false twisting process or in a separate process.
According to the preferred method of the present invention,
This makes it possible to efficiently and reasonably manufacture the kumiko style composite processed yarn. sand
That is, the birefringence Δn of the A component yarn is 30 to 70 × 10^-3of
Part and Δn = 120-160 × 10^-3Along the length of the thread
Because they are mixed, a natural unevenness can be exhibited.

[Brief description of the drawings]

FIG. 1 is a schematic view showing the appearance of a yarn according to one embodiment of the present invention.

FIG. 2 shows steps of an example of the production method of the present invention.

FIGS. 3A and 3B are diagrams for explaining the natural stretching elongation; FIG. 3A is a diagram showing strength-elongation characteristics of a polyester highly oriented undrawn yarn (POY); FIG. FIG.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 highly oriented undrawn yarn package A yarn 2 drawn yarn package B yarn 3 feed roller 4 feed roller 5 feed roller 6 heat fixing device 7 false twist device 8 feed roller 9 heat fixing device 10 feed roller 11 winding roller 12 composite yarn package 13 Cyclic vibrating yarn section 14 False twisting section (A) Single winding section (B) Triple winding section

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toshiaki Miura 1-1-1 Kamiyake, Heiwa-cho, Nakajima-gun, Aichi Prefecture Toray Textile Co., Ltd. Headquarters Tokai Works (72) Inventor Kiyoshi Nakagawa Kamimiyake, Heiwa-cho, Nakajima-gun, Aichi Prefecture 1-1 Chome 1 Toray Textile Co., Ltd. Head Office Tokai Plant (58) Field surveyed (Int.Cl. ⁶ , DB name) D02G 1/00-3/48 D02J 1/00-13/00

Claims (4)

(57) [Claims] 1. A false twisted composite yarn having a core-sheath structure comprising at least two kinds of thermoplastic synthetic fiber multifilaments A and B, wherein the false twisted composite yarn has a single-wound portion in the length direction of the yarn. The triple winding portion is formed alternately, and in the single winding portion, the A component yarn forms a sheath yarn portion, and in the triple winding portion, the B component yarn forms a sheath yarn portion. Characteristic pongee-like composite processed yarn. 2. The single-wound portion has the A yarn as a sheath yarn,
The actual twist number is in the range of 500 T / M or more and 1500 T / M or less, the yarn length difference between A and B is in the range of 1.02 ≦ A / B ≦ 1.1, and the triple-wound portion has the B yarn. 2. The pongee-like composite processed yarn according to claim 1, which is wound threefold. 3. At least two types of thermoplastic synthetic fibers.
False twist with core-sheath structure composed of multifilaments A and B
A method for producing a composite yarn, wherein the yarn A has a birefringence Δn of 30.
× 10^-3~ 70 × 10^-3And △ n is 120 × 10^-3
~ 160 × 10 ^-3Is mixed in the yarn length direction.
Using an ester filament yarn, the birefringence Δn
Is 100 × 10^-3~ 140 × 10^-3Polyester consisting of
Using a polyester-based filament,
On the upstream side of the heating area, the B yarn is vibrated periodically.
And then twisted to the A yarn, and then the twisted yarn was false twisted.
Manufacturing method of pongee-like composite processed yarn characterized by processing
Law. 4. A high-orientation polyethylene terephthalate unoriented yarn (POY) is used as the A yarn, and the birefringence Δn is 30.
× 10 ⁻³ to 70 × 10 ⁻³ and Δn are 120 × 10 ⁻³
The method for producing a pongee-like composite processed yarn according to claim 3, wherein a filament yarn in which a portion of ~ 160 x ^10-3 is mixed in the length direction of the yarn is formed in a previous step or a separate step following the false twisting step.