JP3518630B2 - Twisted yarn and production method thereof - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ply-twisted yarn composed of a filament having a large monofilament fineness and a spun yarn or a long / short composite yarn, which is excellent in tension, waist, dryness and sharpness, and a method for producing the same.

[0002]

2. Description of the Related Art In recent years, various long and short composite spun yarns in which synthetic fiber filaments and short fibers are compounded, and long and short composite twisted yarns in which synthetic fiber filaments and spun yarns are twisted have been proposed.
These yarns are often used for clothing as having the high strength of filaments and the feel of short fibers. However, these yarns are poor in dry feel and crispness in terms of texture, and it is necessary to add more actual twists in order to give a dry feel and crispness.
If you apply a lot of real twists, the problem of skew will occur, and
Even in terms of processes, problems such as reduced productivity and troubles during weaving and weaving occurred.

[0003]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned drawbacks of the prior art and has less fluff that has a feeling of dryness / sharpness and a texture excellent in tension / waist / repellency which has not been obtained in the past. An object of the present invention is to provide a plied yarn having excellent abrasion resistance and a method for producing the same.

[0004]

In order to solve the above-mentioned problems, the present invention takes the following means. That is,
The invention of claim 1 is a spun yarn composed of short fibers having an average fiber length of 25 to 50 mm or a long-short composite yarn containing 50% by weight or more of the short fibers, and a synthetic fiber filament having a single fiber fineness in the range of 7 to 30 d. With a twisted yarn consisting of one or more
Of the spun yarn or the long / short composite yarn and the twisted yarn
And twisting direction are Goyo in the same direction, in the range of 20 to 150 U / 10m fluff fluff index of end free, and looped fluff number 60-120 U / 10m range near the
It is a plied yarn that is used for fabrics .

Next, the invention of claim 2 is the composite twisted yarn according to claim 1, wherein the twist coefficient of the spun yarn or the long / short composite yarn is in the range of 2.0≤K1≤8.0.

Further, in the invention of claim 3, the ratio of the twist coefficient K2 at the time of ply twist and the twist coefficient K1 of the spun yarn or the long / short composite yarn is 0.3≤K2 / K1≤1.5. The plied yarn according to 1 or 2.

Further, the invention according to claim 4 is the case where the cross-sectional shape of the synthetic fiber filament is defined by the formula of 0.1 <r / R <0.7. It is a twisted yarn.

Furthermore, the invention of claim 5 is a spun yarn made of short fibers having an average fiber length of 25 to 50 mm or a long-short composite yarn containing 50% by weight or more of the single fibers, and a single fiber fineness of 7
Ply with one or more synthetic fiber filaments in the range of up to 30d in the same direction at a ply angle of 10 ° to 40 °
The end-free fluff has a fluff index of 20 to 150 co / 1
It is in the range of 0 m and the number of loop-shaped fluff is 60 to 120.
The range of co / 10 m is set in the range 1 described in claim 1.
This is a method for producing a laminated twisted yarn.

The present invention will be described in detail below. In the present invention, the average fiber length of the short fibers must be in the range of 25 mm to 50 mm. If it is less than 25 mm, spinning is difficult, and if it exceeds 50 mm, the texture unique to short fibers,
It is not preferable because the swelling feeling cannot be obtained.

The material of the short fibers is one or more selected from the group consisting of natural fibers such as cotton, wool and hemp, synthetic fibers such as polyester and polyamide, regenerated fibers such as rayon and polynosic, and semisynthetic fibers such as acetate. They may be used alone or as a mixture by selecting the species.

The long-short composite yarn refers to a yarn obtained by opening a core yarn or a multifilament and stacking it with a fleece made of short fibers. If the short fiber content of the long-short composite yarn is less than 50% by weight, the texture of the short fiber cannot be obtained after being twisted with the synthetic fiber filament, which is not preferable.

The twist coefficient K1 of the spun yarn or the long / short composite yarn
Preferably satisfies 2.0≤K1 ≤8.0.
When it is less than 2.0, the spinnability is deteriorated, and when it exceeds 8.0, the twisting torque remains large even after twisting with the synthetic fiber filament, which is not preferable.

The monofilament fineness of the synthetic fiber filament to be twisted with the spun yarn or the long-short composite yarn is preferably in the range of 7d to 30d, preferably 10d to 25d. 7
When it is less than d, it is not preferable because the fabric does not have tension, waist and elasticity, and when it is more than 30 d, the rigidity is too strong and it is difficult to handle. Is not desirable.

The number of synthetic fiber filaments to be twisted is 1
The number may be one or plural, and preferably 1 to 4 and a total of 7d to 60d. If it is less than 7 d, it is not preferable because the fabric cannot be stretched and repelled. When it exceeds 60 d, the rigidity is too strong to be handled easily, and when the fabric is made, it is not preferable because it has a rough feeling. The number of filaments to be twisted is 2 for spun yarn or long / short composite yarn.
It is preferably 0% to 50% by weight. If the amount is less than 20% by weight, it is difficult to obtain tension, waist, and repulsion with the fabric.
If it exceeds 0% by weight, the texture of short fibers cannot be obtained, which is not preferable. Examples of filaments to be twisted and twisted include synthetic fibers such as polyester, polyamide and polyacryl, as well as semi-synthetic fibers such as promix, but polyester is most preferable in terms of rigidity.

Further, by using a filament having a different cross-sectional shape, the tension, waist and repulsion can be further improved. The cross-sectional shape of the filament to be twisted is preferably within the following range in terms of the ratio of the radii of the inscribed and circumscribed circles.
0.1 <r / R <0.7 where r is the radius of the inscribed circle, R
Is the radius of the circumscribed circle. When it is 0.1 or less, the filament is easily broken, which is not preferable. Above 0.7,
It is not preferable because the difference in rigidity and texture is less likely to occur.

Further, the twist coefficient K2 of the upper twist in the above-mentioned twisted yarn
And the twist coefficient K1 of the lower twist is 0.3≤K2 / K1≤1.
5 is preferable, and 0.5 <K is more preferable.
2 / K1 ≤1.0. This is because the above K2 / K1 is less than 0.
When it is less than 3, the amount of fluffs to be rolled up becomes small, and the sizing property with the spun yarn or the long / short composite yarn is deteriorated, which is not preferable.
When it exceeds 1.5, the twisting torque becomes large, and when the knitted fabric is formed, the twisting occurs, the texture is impaired, and the problem of skewing occurs, which is not preferable.

The twisting direction of the upper twist in the above-described twisted yarn and the twisting direction of the spun yarn or the long / short composite yarn are the same. For the reverse, the filaments twisted case in the core, if the spun yarn or long and short composite yarn has a fabric becomes Maki attached form a spiral, dry Shari is not obtained, even Ru poor conjugation of .

In the obtained plied yarn, the fluff contained in the spun yarn is brought into contact with the ply-twisted filament to be folded and wound up to form looped fluff as shown in FIG. Will be included. Therefore, the number of terminal-free fluff of 1 mm or more is 20 per 10 m.
The range is from to 150. Also, the number of loop-shaped fluff is 60 to
It will be in the range of 120 m / 10 m. 60 pieces / 10m
If the twisting angle is less than 0, the twisting angle becomes the same as that of 0 degree and it becomes indistinguishable, and if it exceeds 120 k / 10 m, there is an abnormality in the spun yarn and the number of fluff is very large. Is not preferable.

Next, the manufacturing method of the present invention will be described. In FIG. 1, the spun yarn or the long / short composite yarn and the synthetic fiber filament are twisted at a twisting angle of 10 ° to 40 °. If it is less than 10 ° or more than 40 °, the fluff is less likely to be caught, which is not preferable. In FIG. 1, A is spun yarn or long / short composite yarn, B is filament, and C
Is a plied yarn, D is a looped fluff, and D is a plied angle.

[0020]

EXAMPLES The present invention will be described in more detail by way of examples. The measuring method is as follows. I. Fuzz index of 1 mm or more (Co / 10 m) Fuzz index of 1 mm or more by a F-index tester (Co / 1
0 m) was measured

B. Number of loop-shaped fluffs (co / 10 m) It was enlarged 100 times with a microscope (manufactured by Scalar Co., Ltd.), the number per 20 cm was randomly counted 10 times, and the average value was converted into the number per 10 m.

C. It is a sensory test of the result of observing the fluff state after 1000 times abrasion with a microscope using a wear resistance TM tester. The TM tester (Daei Kagaku Seiki Co., Ltd.) is 20 / inch
Thread the thread through the 3 rows of combs, fix the bending angle to 116 °, and apply a reciprocating motion of 150 mm / min and a width of 27 mm to the comb workbench while keeping the tension with a 400 g weight ( ) A device for squeezing threads.

D. Knitted fabric obliqueness The sensory evaluation of the knitted fabric was also performed for the tension, waist, repellency, and dry / sharpness, which were evaluated by the sensory evaluation of the degree of obliqueness of the knitted fabric with respect to the longitudinal direction. The sensory evaluation is an average of the evaluations of five veterans, and Δ indicates that the evaluation is bad (low), ◯ indicates a little good, and ⊚ indicates very good.

E. Comprehensive evaluation The same method as the sensory inspection of the diagonal direction of the knitted fabric was used, and the evaluation method was performed in the same manner.

Examples 1 to 3 Spun yarn 50 'made of 100% cotton having an average fiber length of 36 mm
S (English cotton count), twist coefficient K1 = 3.5 (Z direction) and polyester filament 40d / 2f, ply angle 25
And a twisting coefficient K2 = 2.5 (Z direction) to obtain a plied twisted yarn (Example 1). Polyester multifilament 30d / 18f on cotton staple instead of spun yarn
Using the long and short composite yarn 40'S (English cotton count) compounded with the core as a core, a twisted yarn was obtained in the same manner as in Example 1 (Example 2). In addition, the twisted filament has a modified cross section (H type)
Using 40d / 4f, a plied yarn was obtained in the same manner as in Example 1 (Example 3). Table 1 shows the physical properties of these plied yarns and the properties of knitted fabrics made from the plied yarns.

[0026]

[Table 1]

Comparative Examples 1 to 4 40 as polyester filaments in Example 1
A twisted yarn was produced in the same manner by using 40d / 15f instead of d / 2f (Comparative Example 1). Further, a double-twisted yarn was produced in the same manner as in Example 1 with the upper twist direction being the S direction (Comparative Example 2). Furthermore, in Example 1, the twist angle is 0 °.
In the same manner, a twisted yarn was manufactured (Comparative Example 3). In Comparative Example 4, 100% cotton staples were used as a composite with polyester filaments 40d / 2f as the core, and the twist coefficient k = 4.5 (Z direction). A 36th (Ne) long / short composite yarn was spun. Table 1 also shows the physical properties and knitted fabric characteristics of Comparative Examples 1 to 4.

From Table 1, the following was confirmed. That is, along with Examples 1 to 3, excellent dry feeling and sharpness,
Example 2 was excellent in abrasion resistance, and Example 3 was excellent in tension, waist and elasticity. On the other hand, in Comparative Example 1, the filament per filament is thin, and tension, waist, and elasticity are not obtained. In Comparative Example 2, there is no obliqueness due to the difference in the twist direction, but it is inferior in terms of abrasion resistance and dry / sharp feeling, since it has a lot of fluff. Comparative Example 3 has a lot of fluff and poor abrasion resistance because the ply twist angle is 0 °, and Comparative Example 4 is a long / short composite yarn with tension, waist, elasticity and dryness / sharpness, but strong twist. Because of this, the slope was large and there were many fluffs.

[0029]

EFFECTS OF THE INVENTION The plied yarn of the present invention is a spun yarn and a filament having a large single fineness which are twisted in the same direction as the spun yarn at a plied angle and twisted up to form a plied yarn with less fluff and excellent abrasion resistance. By using this as a cloth, it is possible to obtain characteristics such as tightness, waist, elasticity, and a unique dry and crisp feeling. Moreover, according to the manufacturing method, the above-described plied yarn can be reliably manufactured.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a ply-twisted yarn during ply-twisting.

[Explanation of symbols]

A spun yarn or long / short composite yarn B filament C compound yarn D loop fluff E twist angle

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) D02G 1/00-3/48 D02J 1/00-13/00

Claims (5)

(57) [Claims] 1. A spun yarn composed of short fibers having an average fiber length of 25 to 50 mm or a long-short composite yarn containing 50% by weight or more of the short fibers, and a synthetic fiber filament having a single fiber fineness in the range of 7 to 30 d. Or a twisted yarn consisting of multiple yarns
Therefore, the twist direction of the spun yarn or the long / short composite yarn and the twist of the composite yarn
And direction are Goyo in the same direction, in the range of 20 to 150 U / 10m fluff fluff index of end free, and looped fluff number 60-120 U / 10m range near the
A ply- twisted yarn characterized by being for fabric . 2. The twist coefficient of the spun yarn or the long / short composite yarn is 2.
The plied yarn according to claim 1, which is in the range of 0≤K1≤8.0. 3. The ratio of the twist coefficient K2 during ply twist to the twist coefficient K1 of spun yarn or long / short composite yarn is 0.3 ≦ K2 / K.
The plied yarn according to claim 1, wherein 1 ≦ 1.5. 4. The plied yarn according to claim 1, wherein the cross-sectional shape of the synthetic fiber filament is defined by the formula of 0.1 <r / R <0.7. However, r is the inscribed circle radius, and R is the circumscribed circle radius. 5. A spun yarn composed of short fibers having an average fiber length of 25 to 50 mm or a long-short composite yarn containing 50% by weight or more of the single fibers, and a synthetic fiber filament having a single fiber fineness in the range of 7 to 30 d. Or 10 ° ~ in the same direction with multiple
40-degree ply-twisting angle, fluff fingers with free ends
It is in the range of 20 to 150 cores / 10m, and it is a loop
The method for producing a plied yarn according to claim 1, wherein the number of fluff is within a range of 60 to 120 co / 10 m .