JP2655229B2 - Summer wool-like composite textured 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 composite yarn having a summer wool-like texture and a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, composite twisted yarns have been produced by false twisting two or more yarns having different elongations in a state of being aligned. No. 7050 uses semi-drawn yarn and undrawn yarn,
K value at false twisting [untwisting tension T ₂ (g) / twisting tension T ₁
(G)] is maintained at 0.95 or less to produce a composite textured yarn without pre-interlace.
In this production method, when obtaining a composite yarn having a two-layer structure in which winding yarns are wound alternately around the core yarn, the winding yarn having an elongation greater than that of the core yarn by 70% or more. It is shown that the attached yarn is used, and as a particularly preferable condition of the composite yarn, the single yarn denier of the wound yarn after processing is 3 deniers or less, and the single fiber denier of the core yarn is 3 deniers or more.

However, in the case of such composite yarn without pre-interlacing, there is a problem that the yarn is apt to be displaced, resulting in a nep-shaped yarn. Condition range is narrow. Moreover,
Here, since the temporary being used twisted into K value during processing must be relatively small untwisting tension T _2, it is required special conditions set. Further, regarding the fabric texture of the composite yarn obtained in this manner, since the single fiber denier of the core yarn is larger than the wound yarn, the yarn has moderate tension and stiffness, but the tactile feel of the surface is low. Soft wool-like, dry, and summer wool-like textures cannot be obtained.

In Japanese Patent Publication No. 61-19733, a semi-drawn yarn and a drawn yarn or a semi-drawn yarn and an undrawn yarn are used, and the core yarn is wound around the core yarn with a larger elongation than the core yarn. A spun-like false twisted two-layered yarn is disclosed in which yarns are wound alternately in a twisted shape, and a part of both yarns is mixed and interlaced at these boundaries to form an interlaced portion. However, in the two-layer structure yarn disclosed herein, similarly to the above-described composite yarn, a wound yarn having an elongation greater than the elongation of the core yarn is used, and a single fiber denier of the processed core yarn is used. (3 denier or more) is larger than the single fiber denier (3 denier or less) of the wound yarn, so that the woven or knitted fabric obtained by using the processed composite yarn has a texture without a dry feeling. Further, in order to obtain a two-layer structure yarn having such a winding structure, not only a relatively large elongation difference is required for the yarns used in combination, but also thermal aberration is required, There is also a restriction that the yarn length difference between the core yarn and the wound yarn must be at least 20% or more.

In Japanese Patent Publication No. 61-20662, a semi-drawn yarn and an undrawn yarn are used, and a part of the wrapped yarn is mixed and crossed with the core yarn, and converges substantially on the surface of the core yarn. A two-layer structure yarn in which a portion wound in a continuous inverted alternately twisted state in a state is formed, and a portion in which individual single fibers are wound in a random phase, is disclosed. In the two-layer structure yarn,
The monofilaments of the wound yarn mixed and interlaced with the core yarn are in a fused state. However, when the wound yarn is fused in this manner, the roughness of the fabric surface becomes strong, the sharpness is strong, and the hardness is increased in terms of texture.
It has poor fit to the skin and has discomfort such as itching, which is not preferable for summer wear. In the two-layer structure yarn disclosed herein, the core yarn has a single fiber denier of 2.0 denier or more and the wound yarn has a single fiber denier of 1.8 denier or less. The resulting fabric has no dry feeling as in the case of the composite yarn described above.

As described above, all of the composite yarns that have been developed so far are semi-drawn yarns, drawn yarns, or undrawn yarns, and the single yarn denier of the core yarn is larger than the wound yarn. Thus, a fabric produced from the composite yarn of such a combination has firmness and stiffness in its texture, but does not have a dry feeling and is not suitable for applications requiring a summer wool-like texture. Did not. In addition, the above-mentioned composite yarns that have been developed so far have a strong yarn roughness and generate a large amount of bi-snall, so it is difficult to handle the yarn, especially in the post-process, and there are many restrictions on the manufacturing conditions, and troubles occur. Is liable to occur. For this reason, the conventional composite yarn is not suitable for applications such as knitting.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to solve the problems in the prior art and to provide a composite yarn having a summer wool-like texture.
It is also an object of the present invention to provide a method for producing such a composite textured yarn.

[0008]

According to the present invention, two types of semi-drawn yarns having different elongations are used as raw yarns to be compositely false-twisted in the aligned state, and the yarns used in the conventional composite yarns are different from the wound yarns. Reverse the single fiber denier of the core yarn, and use the semi-drawn yarn with the larger elongation and single fiber denier for the wrapping yarn, while using the lower elongation and single fiber denier for the raw yarn constituting the core. The use of the semi-drawn yarn, and the use of the melted portion of the untwisted portion rotated by 360 ° or more, which is a drawback in the prior art, and by using these structural portions, giving a sense of sharpness, summer wool The inventors have found that a tone-like texture can be obtained, and solved the above-mentioned problems.

That is, the summer wool-like composite processed yarn of the present invention is a semi-drawn yarn having a single fiber denier of 5.0 d or more (original yarn A).
And a semi-drawn yarn having a single fiber denier of 3.5 d or less (original yarn B)
And the untwisted portion where the original yarn A and the original yarn B are wound around each other in the form of a core-sheath structure in which the original yarn A is exposed on the surface. Are in a stuck state, and in the opening portion where the original yarn A and the original yarn B are not wound around each other, both the original yarn A and the original yarn B are exposed on the surface without taking a core-sheath structure. And the number of untwisted portions per meter is 120 or more.

First, the raw yarns A and B which constitute the summer wool-like composite processed yarn of the present invention will be described. Both the raw yarns A and B in the present invention are semi-drawn yarns drawn to a certain extent. The raw yarn A to be wound by composite false twisting has a single fiber denier of 5.0 denier or more, and particularly has a spinning speed of 2300 to 2700 m / min. And those having a birefringence of 25 × 10 ^{−3 to} 35 × 10 ⁻³ are preferable. On the other hand, the original yarn B constituting the core by the composite false twist
Has a single fiber denier of 3.5 denier or less, and particularly has a spinning speed of 3000 to 3500 m / min. And those having a birefringence of 40 × 10 ^{−3 to} 60 × 10 ⁻³ are preferable.

[0011] In the composite yarn of the present invention comprising the above-mentioned raw yarns A and B, a fiber opening portion in which the raw yarn A and the raw yarn B are not wound around each other is partially formed, In this spread portion, the core-sheath structure is broken, and the single fiber of the original yarn A and the single fiber of the original yarn B are both exposed on the surface. On the other hand, an untwisted portion is formed in a portion where such an open portion is not formed.
And the original yarn B are wound around each other in a swirl shape, and the original yarn A has a core-sheath structure exposed on the surface, and the single fibers are stuck to each other.

The composite textured yarn of the present invention has 12 / m
There are zero or more untwisted portions, and in the present invention, such an insect-eating untwisted portion is formed into a knitted fabric by forming a certain number or more per unit length. The resulting fabric has firmness and waist, and the preferable number of untwisted portions is 120 to 200 per m. This is because when the number of untwisted parts is 120 or less per 1 m, the crisp taste and dry feeling are lost in terms of texture, and conversely, when the number of untwisted parts is 200 or more per 1 m, the surface is roughened in terms of texture,
This is because the quality is significantly impaired. In the present invention,
When the untwisted portion is obtained by false-twisting the raw yarn A and the raw yarn B with a frictional false twisting machine, the number of untwisted portions is more preferably 160 to 200 per m, and 180 ~ 190 are more preferred.

Here, the untwisted portion means that the raw yarn A is wound around the raw yarn B constituting the core yarn in an S-direction or a Z-direction, depending on the twisting direction. In the untwisted part in the present invention, the state before the single fiber is fused, that is, in the untwisted part in the present invention, that is, in the state of agglutination, when this part is observed with a microscope Although the boundary line between each single fiber is visible, it is in a fixed state as a whole.

In the present invention, when measuring the number of untwisted portions, the following method is used. First, a 0.1 g / d (denier) weight is attached to one end of the sample yarn to be measured.
Hang the sample thread vertically with the other end fixed. Then, the upper and lower ends of the sample yarn are fixed to an acrylic plate having a length of about 1.2 m so that this state is maintained, and the sample yarn is colored with a highlighter pen. 30-4
The wound structure of the yarn is observed using a microscope of 0 magnification, and the number of uncolored untwisted portions is measured. The measurement speed when observing the untwisted portion with a microscope is 2.
1 second.

The present invention is also a method for producing a summer wool-like composite textured yarn having the above structure. Hereinafter, a production method using a friction type false twisting machine will be described. In this method, when two types of raw yarns A and B are aligned and composite drawn false twisted to obtain a composite processed yarn, a single drawn denier 5.0d or more semi-drawn yarn is used as the raw yarn A, As the yarn B, a semi-drawn yarn having a single fiber denier of 3.5 d or less is used, and the elongation of the yarn A is larger than the elongation of the yarn B, and the elongation of the yarn A and the yarn B is Elongation difference is 1
00% or less, the draw ratio is 1.26 to 1.54 times, and the temperature of the false twist heater in the false twist processing is 230.
２５０250 ° C., the false twist heater passage time was 0.25-0.
5 sec. , K value during false twisting [untwisting tension T ₂ (g)
/ Twisting tension T ₁ (g)] is 0.5 or less.

In this case, the yarns A and B used have the above-mentioned physical properties, and the elongation of the yarn A is greater than the elongation of the yarn B. The difference is 10
0% or less, preferably 60% or less,
In particular, a combination in which the difference in elongation between the original yarn A and the original yarn B is 40 to 60% is preferable. In the present invention, when the above-described condition of the elongation difference is not satisfied, the obtained composite processed yarn is less likely to have a core-sheath structure. In the present invention, the draw ratio based on the original yarn A is DR = [(E +
100) / 100] × 0.45 to 0.55 (provided that E
Indicates a large elongation at break), and the preferred range of the draw ratio is about 1.26 to 1.54.
It is twice.

When producing the summer wool-like composite textured yarn by the method of the present invention, a general circumscribed friction false twisting machine can be used. One embodiment of the manufacturing process is shown in FIG. As shown in FIG. 1, in the present invention, after the original yarn A and the original yarn B are aligned by the guide 1 and combined, the tension adjusting device 2,
It is supplied to the interlace nozzle 9 for mixing and entanglement via the first feed roller 3, and then supplied to the stretching false twist zone by the second feed roller 4,
After being taken up by the delivery roller 7 through the false twisting tool 6, it is wound up as a winding cheese 8. In this case, an interlace nozzle 9 is provided between the first feed roller 3 and the second feed roller 4, but the interlace nozzle 9 is provided as needed and may not be provided. . In the present invention, the raw yarn A and the raw yarn B
When false-twisting, a circumscribed friction false-twisting tool can be used as the false-twisting tool 6, so that there is an advantage that processing can be performed at high speed.

In the present invention, in particular, the raw yarn A and the raw yarn B partially form an open portion where the raw yarn A is not spirally wound with each other, and the untwisted portion where each single fiber is in a stuck state. It is important to form a certain number of yarns per unit length. In this manufacturing method, the original yarns A and B
It is necessary to select conditions that do not cause fusing. In the present invention, as a processing condition for forming the agglutinated state in such an untwisted portion, a false twist heater temperature of 230 to
250 ° C, false twist heater passage time 0.25-0.5s
ec. The processing speed in this case is preferably 250 to 650 m / min. Is preferred.

In the present invention, the K value at the time of false twisting [untwisting tension T ₂ (g) / twisting tension T ₁ (g)] is adjusted to 0.5 or less, and especially 0.2 to 0. It is preferably 5. At this time, if the K value exceeds 0.7, the number of untwisted portions becomes zero, and the core-sheath structure is completely destroyed, resulting in a composite yarn with extremely poor firmness and firmness in terms of texture. In the present invention, when adjusting to the above K value, the number of disks of a general circumscribing friction false twisting machine may be appropriately adjusted and combined,
False twisting can be performed under general conditions using a urethane disk. Thus, in the present invention, under the above false twisting conditions, a composite yarn having 120 or more untwisted portions formed per meter can be manufactured, and the number of untwisted portions is large. You can get something with a firm and waist. By using the method of the present invention described above, a composite processed yarn having a yarn length difference of less than 5% between the original yarn A and the original yarn B can be obtained, and in particular, a composite yarn having a yarn length difference of 2 to 3%. The processed yarn has a good summer wool-like texture.

Further, the present invention is also a method for producing a summer wool-like composite processed yarn by aligning two types of raw yarns A and B and performing composite false twisting with a false twisting spindle. The manufacturing method using the machine will be described. Also in this method, the original yarn A and the original yarn B having the same elongation difference and elongation ratio as described above are used, and the number of twists (set twist number) of the false twist spindle is set to ([275,000 / (D + 60)
+800]) × 0.9 to 1.2 (where D indicates the fineness of the composite processed yarn after stretching). In addition, the temperature of the false twist heater in the false twist processing is 230 to 250 ° C., and the passing time of the false twist heater is 0.35 sec. That is all.

Under such processing conditions, the composite processed yarn obtained by using the spindle type false twisting machine has an excellent crispness and dryness when formed into a knitted fabric, and has a twisted number within the above range. The reason for the limitation is to improve the sharpness and dryness of the knitted fabric produced using the obtained composite textured yarn. In the case of a composite yarn in which the number of twists of the spindle type false twisting machine is equal to or more than the value of the above expression, the number of untwisted yarns is small. Will be insufficient. Conversely, even in the case of a composite processed yarn having a twist number of not more than the value of the above formula, the knitted fabric has no sharpness and dryness due to a small number of untwisted yarns.

Further, in this manufacturing method, the above ranges are selected for the temperature and the passing time of the false twist heater so that the number of untwisted portions per 1 m is 120 or more.
In particular, the passing time of the false twist heater is 0.5 sec. It is preferable that it is above. In the present invention, by changing the type of the false twisting machine or by changing the false twisting conditions, it is possible to produce summer wool-like composite processed yarns of various yarn qualities.

Further, in the present invention, the composite processed yarn false-twisted by using a circumscribed friction false twisting machine or a spindle type false twisting machine is successively supplied into a relaxation heater and relax set (stabilized processing). The textured yarn obtained in this manner may be less likely to be twisted or snare without impairing the original dry feeling. Therefore, the yarn obtained by performing the stabilizing process has excellent handleability of the yarn in a subsequent process. When performing the stabilized processing in the present invention, it is necessary to select conditions that do not cause the yarn to be fused by the heat of the relax heater, and the temperature of the relax heater is 160 to 220.
C is preferable, and the overfeed rate is preferably 5 to 8%. It should be noted that the yarn that has been subjected to the stabilized processing has a lower torque value than the yarn that has not been subjected to the stabilized processing. Examples of producing the summer wool-like composite textured yarn of the present invention will be described below.

[0024]

EXAMPLE Example 1: Experiment of false twist processing using a circumscribed friction false twist machine. 1 As raw yarn A, 2500 m / min. Polyester yarn (elongation: 180%, 145D / 24)
f), while 3500 m / mi as raw yarn B
n. Polyester yarn obtained at a spinning speed of
0%, 115D / 36f). Then, the raw yarn A and the raw yarn B are aligned, and in the step shown in FIG. 1, the draw ratio is 1.45 times, the temperature of the false twist heater is 240 ° C.,
False twist heater passage time 0.43 sec. , Yarn speed 350m
/ Min. False twisting was performed under the conditions of a speed ratio (D / Y) of 2.012 to produce a composite processed yarn. In this case, a circumscribed friction false twisting tool was used as the false twisting tool, the number of disks was 12, and the K value was 0.30.

When the structure of the composite yarn thus obtained was observed with a microscope, it was found that the untwisted portion where the original yarn A and the original yarn B were wound around each other in a swirling manner, the original yarn A was exposed on the surface. Takes a core-sheath structure, each single fiber is in a stuck state,
On the other hand, in the opening portion where the original yarn A and the original yarn B are not wrapped around each other, the original yarn A and the original yarn B do not have a core-sheath structure.
It was found that both were exposed on the surface. When the number of untwisted portions was measured according to the method described above, it was confirmed that 185 untwisted portions existed per meter. Furthermore, a knitted fabric was produced using this composite processed yarn, and the texture of the shari taste was evaluated by tactile sensation. As a result, it was found that the knitted fabric had a strong shari taste.

Experiment No. Experiment Nos. 2 to 4 The passing time of the false twist heater at 1 was 0.3
7, 0.25, 0.23 sec. In each case, a composite processed yarn was manufactured. In this case, the K value under each condition was 0.32, 0.34, 0.36. Experiment No. In the same manner as in Example 1, the number of untwisted portions in each composite processed yarn was measured, and a knit knitted fabric was prepared from each composite processed yarn, and the shari taste was evaluated. Table 1 shows the results obtained from these experiments.
In addition, experiment No. In No. 4, the surging yarn was broken.

Experiment No. Experiment Nos. 5 and 6 As the raw yarn A in Experiment No. 1, 1 and the same yarn (Experiment No. 5, elongation difference is 0), and 1500 m / min. When using the polyester yarn obtained at a spinning speed of (Experiment No. 6,
Experiment no. The same composite processing as in Example 1 was performed. As a result, in Experiment No. In the case of Experiment No. 5, the untwisted portion was not formed, and the knitted fabric lacked the sharp taste. In the case of No. 6, yarn breakage occurred (see Table 1).

Experiment No. Experiment No. 7-10 1 was set to 230 to 20
The temperature was changed to 0 ° C. Composite processing was performed using the same original yarns A and B as in Example 1 to obtain a composite yarn. Table 1 shows the results in these cases.

Experiment No. Experiment No. 11-15 Experiment No. 1 was conducted by changing the number of disks of the circumscribed friction false twisting tool to 11 to 7 disks. Composite processing was performed using the same original yarns A and B as in Example 1. Table 1 shows the results.

[0030]

[Table 1]

From the results in Table 1, it is necessary to use semi-drawn yarns having a difference in elongation as raw yarns A and B in order to produce the composite processed yarn of the present invention having a summer wool-like texture. , The temperature of the false twist heater is about 230 to 240 ° C, and the passing time of the false twist heater is 0.25 to 0.43 sec. It can be seen that the false twist condition in which the number of disks is 10 or more and the K value is 0.3 to 0.5 is suitable. Further, there is a correlation between the sharp taste and the number of untwisted portions.

Example 2: Experiment of false twisting using a spindle type false twisting machine 16 to 29 Using yarns A and B described in Example 1, the same experiment was performed using a spindle type false twisting machine. The processing conditions are as shown in Table 2 below, and the passing time of the false twist heater is 0.35 to 1.00 sec. , False twist heater temperature is 2
The stretching ratio was set to 1.449 times at 00 to 245 ° C. The number of untwisted portions in the composite processed yarn obtained under each condition, and the sharpness of the knitted fabric produced from each composite processed yarn were evaluated in the same manner as described above. Table 2 shows the results of this experiment.

[0033]

[Table 2]

From the results shown in Table 2 above, it can be seen that the number of untwisted portions is about 120 or more per meter in the summer wool-like composite textured yarn of the present invention, which has an excellent shari texture. The processing conditions for obtaining the number of untwisted portions are as follows: the temperature of the false twist heater is about 230 ° C. or higher, and the passing time of the false twist heater is 0.35 sec. That is all. When the number of untwisted portions per 1 m is 120 or less, the sharpness and dryness of the texture are lost, and when the number is 200 or more, the surface is rough and the quality is significantly impaired. Was. In the relationship between the number of twists and the number of untwisted portions, when the number of twists is 2300 T / M or more, the untwisting sharply decreases, and the produced knitted fabric lacks the crisp texture. . Conversely, when the number of twists is 1950 T / M or less, untwisting gradually decreases, and the produced knitted fabric lacks the sharp taste.

Example 3 Evaluation of Yarn Quality Depending on the Type of False Twisting Machine Next, it was examined how the yarn quality of the obtained summer wool-like composite processed yarn differs depending on the type of false twisting machine. The false twisting machines used in the experiment were a friction false twisting machine manufactured by Teijin Machinery, a friction false twisting machine manufactured by Ishikawa Seisakusho, and a spindle false twisting machine manufactured by Mitsubishi. A total of three types of yarns A and B were used. , And are the same as those described in the first embodiment. Table 3 below summarizes each processing condition and the quality of the obtained composite processed yarn.

[0036]

[Table 3]

From the results shown in Table 3 above, in the present invention, even when the same raw yarns A and B are used, the case where the friction false twisting machine is used and the case where the spindle false twisting machine is used are the same per 1 m. It can be seen that the number of untwisted portions is different and that a summer wool-like composite processed yarn having a different yarn quality can be produced. Although differences in strength, crimp recovery rate, heat yield, and torque were also found due to differences in the type of false twisting machine, knitting made from these summer wool-like composite processed yarns of the present invention. The grounds all had an excellent crisp taste.

Example 4: Experiment on false twisting using a circumscribed friction false twisting machine and a spindle type false twisting machine (when a relax heater is used) A friction false twisting machine described in Example 3 (manufactured by Teijin Limited) )), A relax heater is attached between the delivery roller and the wound cheese (see FIG. 1), and the yarns A and B described in Example 1 are used and the false twist is performed under the processing conditions described in Example 3. Processing experiments were performed. Then, the temperature of the relaxation heater was changed to 160 to 240 ° C., and how the yarn quality of the obtained composite processed yarn was different was examined. In this case, the overfeed rate in the relaxing set step was 8%. Further, a relaxation heater was attached to the spindle false twisting machine (manufactured by Mitsubishi) described in Example 3, and a similar false twisting experiment was performed. Tables 4 and 5 below summarize the processing conditions and the yarn quality of the obtained composite processed yarn.
In Tables 4 and 5, "Judgment" is an evaluation of the texture of a tubular knitted fabric made from each composite yarn.

[0039]

[Table 4]

[0040]

[Table 5]

From the results shown in Tables 4 and 5, from the viewpoint of the quality of the yarn, the temperature of the relaxing heater was 160 to 220 ° C. for both yarns.
Until then, no significant difference was observed. When the temperature of the relax heater was 220 ° C. or higher, a reduction in the crimp restoring rate was observed on the yarn surface, and the yarn was welded inside the relax heater during the yarn hooking, resulting in poor yarn hooking workability. By performing the stabilized processing by the relax heater,
It was found that a yarn having a lower torque could be manufactured as compared with the composite processed yarn when the stabilized processing by the relax heater was not performed (the case of the control in Tables 4 and 5). In addition, as a result of evaluating the texture of the tubular knitted fabric produced using the obtained composite processed yarn, the temperature of the relax heater was 160 to 2
In the range of 20 ° C., it was confirmed that the surface unevenness, sharpness, and dryness did not change.

Further, from the results of Tables 4 and 5, as an effect of performing the relaxing setting step, the generation of bili-snarl can be reduced without impairing the original dry feeling and the like. Therefore, it is not necessary to stop the piri snare at the time of release in the post-process. Further, in the case of the twisting process, the composite processed yarn of 1000 T / M or more has conventionally caused many troubles due to twisting or the like. However, by performing the relaxing set process, any trouble occurs when the temperature of the relaxation heater is 160 to 220 ° C. No operability was improved. In the case of the conventional composite yarn, knitting was difficult even in the development for knitting. However, knitting became possible by the stabilizing process in which the relaxing set process was performed.

[0043]

The texture of the fabric obtained by using the summer wool-like composite textured yarn of the present invention is similar to wool, since the texture of the surface is dry, and the surface of the fabric has less irregularities and less fuzz. It is a touch. In addition, the fabric obtained in this manner has an appropriate firmness and waist, has a sharp taste, and is suitable for wear applications that require a summer wool-like texture. Further, by using the production method of the present invention, a composite textured yarn having the above characteristics can be produced efficiently. In particular, when the relax set process is performed, even if the twisting process is performed by the circumscribed friction false twisting machine or the false twisting process performed by the spindle false twisting machine, the generation of the twist and the snare is small, and the post-process is performed. In the above, a composite processed yarn which is easy to handle is obtained.
It is suitable for applications such as knitting.

[Brief description of the drawings]

FIG. 1 is a schematic view showing one embodiment of a processing step for producing a composite processed yarn of the present invention using a circumscribed friction false twisting machine.

[Explanation of symbols]

 A, B Raw yarn 1 Guide 2 Tension adjusting device 3 First feed roller 4 Second feed roller 5 False twist heater 6 False twist device 7 Delivery roller 8 Winding cheese 9 Interlace nozzle

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Kazuko Yoshimura 22-5 Kamikawabata-cho, Sabae City, Fukui Prefecture (56) References JP-A-3-90641 (JP, A) JP-A-2-139440 (JP, A) JP-A-55-98931 (JP, A) JP-A-1-132845 (JP, A) JP-A-3-27140 (JP, A) JP-B-61-19733 (JP, B2)

Claims (3)

(57) [Claims] A semi-drawn yarn (raw yarn A) having a single fiber denier of 5.0 d or more and a half-drawn yarn (raw yarn B) having a single fiber denier of 3.5 d or less are compositely drawn and false-twisted. In the untwisted portion where the raw yarn A and the raw yarn B are wound around each other in a swirling shape, the raw yarn A has a core-sheath structure exposed on the surface,
Each single fiber is in an agglutinated state, and the above-mentioned original yarn A and original yarn B
In the spread portion where the fibers A and B are not spirally wound with each other, both the raw yarn A and the raw yarn B are exposed on the surface without taking a core-sheath structure, and the untwisted portion per 1 m Is 120 or more. 2. When two types of raw yarns A and B are aligned and subjected to composite drawing false twist to obtain a composite processed yarn, a single drawn denier 5.0d or more semi-drawn yarn is used as the raw yarn A; 2. As the raw yarn B, single fiber denier
When a semi-drawn yarn of 5d or less is used, the elongation of the original yarn A is larger than the elongation of the original yarn B, and the elongation difference between the original yarn A and the original yarn B is 100% or less. Is 1.26 to 1.5
4 times, and the temperature of the false twist heater in the false twist processing is 230 to 250 ° C
The passing time of the false twist heater is 0.25 to 0.5 sec.
Wherein the K value (twisting tension T ₂ (g) / twisting tension T ₁ (g)) at the time of false twisting is 0.5 or less. 3. When two types of raw yarns A and B are aligned and composite drawn false twisted by a false twisting spindle to obtain a composite processed yarn, the raw yarn A is a half-drawn single fiber denier of 5.0 d or more. 2. Using a yarn, as the raw yarn B, a single fiber denier
When a semi-drawn yarn of 5d or less is used, the elongation of the original yarn A is larger than the elongation of the original yarn B, and the elongation difference between the original yarn A and the original yarn B is 100% or less. Is 1.26 to 1.5
4 times, the temperature of the false twist heater in the false twist processing is 230-250 ° C
The passing time of the false twist heater is 0.35 sec. And the number of twists of the false twist spindle is ([275,000 /
(D + 60) +800]) × 0.9 to 1.2 (however, D
Represents the fineness of the composite processed yarn after stretching).