JP4329001B2 - Air entangled spun yarn and flexible woven or knitted fabric using the same - Google Patents

Description

【００１９】
本発明の効果は基本的には比較例１、及び２に対する風合のソフトさを比較することで計ることができる。比較例１は中空繊維で繊度１．６ｄｔｅｘが１００％、比較例２は中実繊維で繊度０．８ｄｔｅｘが１００％の従来のエア交絡紡績糸である。中実繊維はふくらみ感のないフラット（地薄）な紡績糸風合、中空繊維はハリ感のあるフラットな紡績糸風合であった。
【００２０】
一方、実施例１は中空繊維で繊度１．６ｄｔｅｘと異型度２．２の十字型繊維で繊度１．６ｄｔｅｘの混紡繊維であり、ややハリ感はあるものの、比較例１に比べ明瞭に嵩高でソフトな風合であった。参考例１は異型度２．２の十字型で繊度１．６ｄｔｅｘと中実繊維で繊度０．８ｄｔｅｘの混紡繊維であり、比較例２に比較し、明瞭に嵩高でソフトな風合であった。比較例４、５は実施例１、参考例１のエア交絡度合を高めたものであり、ピリングレベルは向上しているが粗硬でフラット、ハリ感の強い風合のものであった。
【００２１】
以上から、補助的に用いる高異型度繊維のソフト、嵩高性に寄与する度合は優れていることがわかる。しかしながら異型度２．０の十字型繊維で繊度３．３ｄｔｅｘとの混紡繊維である比較例３は硬く、これら高異型度繊維の繊度が太過ぎると風合クッション効果より硬さが強調され、ソフト化を阻害していることがわかる。実施例は比較例に比較し、ソフトでいずれも毛羽数が多いが抗ピリング性は４級以上であり、十分な抗ピル性能を有する水準であった。
【００２２】
【発明の効果】
本発明によれば、細繊度であっても風合硬化が避けられないエア交絡紡績糸をクッション効果のある高異型度繊維を混紡して用いることで嵩高でソフトな紡績糸風合とすることが可能である。そのためソフトで吸水速乾性能、保温性等が要求されるインナー用途等に好適に用いることが可能である。[0001]
BACKGROUND OF THE INVENTION
The present invention is a soft air entangled spun yarn suitable for sports outerwear, casual wear, or sports innerwear, women's innerwear, men's innerwear, baby wear, abdomen, towels, bed sheets, pillowcases, futon sides, etc. It relates to a woven or knitted fabric using the same.
[0002]
[Prior art]
As means for obtaining the anti-pilling property of the woven or knitted fabric, there is use of a so-called air entangled spun yarn such as an open end or a bundle spun yarn in addition to using a conventional modified polyester fiber. In recent years, this method has been developed and can be spun in fine counts such as 50, 60, etc., and the spinning speed is increased to 300 to 400 m (for example, Patent Document 1), compared with ring spun yarn. Its economic rationality has become extremely high.
However, since the air entangled spun yarn has a structure in which the fiber ends of the yarn surface layer portion are entangled with each other to form a spun yarn, it is inevitable that the texture is cured as compared with the ring spun yarn. A ring spun yarn using fibers having a fineness of about 0.8 to 1.2 dtex is soft and flexible. However, in the case of an air entangled spun yarn, it becomes a hard and inflexible spun yarn. In the case of hollow fibers, ring spun yarns tend to be more firm and firm than solid fibers, but with air entangled spun yarns, this tendency is even more pronounced, which basically requires softness. It was not desirable for the innerwear and the like.
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 5-125624 (Example 1)
[0004]
[Problems to be solved by the invention]
A soft air entangled spun yarn is provided, and a flexible knitted or knitted fabric using the air entangled spun yarn is provided.
[0005]
[Means for Solving the Invention]
That is, the present invention employs the following means.
1. 1. Variance of 1.8 or more, fineness having 3 or more and 6 or less protrusions on the outer periphery of the fiber cross section;
Polyester fibers of less than 5 dtex are contained in an amount of 20% by mass or more and 80% by mass or less, hollow fibers having a hollow ratio of 8% or more and fineness of 2.2 dtex or less are contained, and the number of fluffs having a length of 1 mm or more is 100 or more per 10 m of yarn length. air entangled spun yarn, she characterized in that it.
2. 2. The method for producing air entangled spun yarn according to 1 above, wherein the air entangled spinning speed is 350 m / min or more.
3. A flexible knitted or knitted fabric comprising the air-entangled spun yarn according to 1 above , and having an anti-pilling property of 3 or more.
[0006]
In the present invention, a specific atypical cross-sectional shape polyester having cushioning properties (flexibility) and air entangled spun yarns of other fibers are obtained, and soft and bulky spun yarns are obtained by specifying the number of fluffs of the spun yarns. By making a woven or knitted fabric using, weaving and knitting is easy and a high quality woven or knitted fabric is obtained.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The fiber which is the basis of the present invention is a modified cross-section fiber having a modified degree of 1.8 or more having 3 or more and 6 or less protrusions on the outer periphery of the cross section when the fiber cross section is viewed. Specific cross-sectional shapes include a Y shape, a cross shape, and a star shape. The degree of irregularity (circumscribed circle diameter / inscribed circle diameter) needs to be 1.8 or more, preferably 2.0 or more and less than 3.0. If it is less than 1.8, the height of the protrusion on the outer periphery of the fiber cross section is low (the groove is shallow), and the force to flexibly receive the stress received by the protrusion is weak. The resilience against stress, that is, the cushioning effect is weakened, and the fiber strength tends to decrease. When the number of protrusions is 7 or more, it is difficult to produce sharp high profile fibers by single component spinning, which is not preferable. If the number is less than 3, it is difficult to produce the yarn. For example, in the case of an elliptical or flat fiber type, softness is obtained, but flatness and bulkiness are difficult to obtain.
[0008]
A fineness of 2.5 dtex or more is not preferable because the coarse and hard feeling increases more than the flexibility. Preferably it is 2.0 dtex or less, Furthermore, it is 1.6 dtex or less. It is possible to increase the flexibility of the blended yarn by increasing the proportion of supporting the blended fiber.
[0009]
The polyester forming the polyester fiber in the present invention may be a homopolymer polyester or a modified polyester containing a low-temperature dyeing type organic sulfonic acid metal salt. Further, these fibers may contain titanium oxide, kaolinite, zirconium carbide, antibacterial deodorant, antibacterial agent, antifungal agent and the like.
[0010]
In the present invention, a fiber having a fineness and shape in which it is difficult to obtain a soft texture by itself is a blended fiber. For example, hollow fibers are generally used as a blended fiber because they are generally rigid and weak in cushioning, and solid fine fibers of about 0.8 dtex are flat and difficult to obtain bulkiness. In the case of hollow fibers, the hollowness is preferably 8% or more, more preferably 10% or more, and further preferably 15% or more. If the hollowness is less than 8%, it is difficult to obtain heat retention. The fineness is less than 2.5 dtex, preferably 2.2 dtex or less, more preferably 1.6 dtex or less. If it is 2.5 dtex or more, a firm texture with a strong elasticity is obtained, which is not preferable. It is more preferable that the fineness is 1.2 dtex or less because the cushioning property, which is the effect of the present invention, is good, the inter-fiber voids can be increased, and the softness and bulkiness can be exhibited.
[0011]
Since the spun yarn structure in the present invention can provide more inter-fiber gaps than the spun yarn used alone, in addition to the soft hand, it is possible to further enhance the heat retention and water absorption quick drying effect. The blending rate of the spun yarn is preferably 20% by mass or more and 80% by mass or less, and more preferably 20% by mass or more and 60% by mass or less for the high atypical fiber. This is because it is difficult to obtain the characteristics and synergistic effect of the blended material outside these ranges.
[0012]
In the air entangled spun yarn of the present invention, the number of fluffs having a length of 1 mm or more needs to be 100 or more per 10 m of spun yarn. If it is less than that, the inter-fiber entanglement is too strong, and for example, it is difficult to obtain bulkiness and soft texture even in the form of a blended fiber as in the present invention. Such spun yarn can be manufactured by lowering the air entanglement degree by lowering the air pressure or increasing the spinning speed.
[0013]
The air entangled spun yarn thus obtained is used alone or in combination with other fibers to form a woven or knitted fabric. Thereafter, the dyeing process is carried out by a usual method corresponding to the fiber characteristics.
[0014]
【Example】
Hereinafter, the present invention will be described by way of examples.
(1) Method of measuring the number of fluffs of spun yarn: The number of fluffs per 10 m of spun yarn was measured using an F-index tester manufactured by Shikishima Spinning Co., Ltd.
(2) Anti-pilling property: Conforms to JIS L1076 A method (ICI type tester 5 hours).
(3) Texture evaluation of woven or knitted fabric: Softness and bulkiness were evaluated by tactile evaluation of five panelists. ○ means good and × means bad.
(4) Comprehensive evaluation: ○ means good and x means bad.
[0015]
In Examples and Comparative Examples, polyethylene terephthalate resin having an intrinsic viscosity of 0.633 was used, and after spinning at a spinning speed of 1700 m / min with a polymer temperature of 288 ° C., different nozzles and discharge rates, stretching was performed at a stretching speed of 140 m / min and a stretching temperature of 112. At ℃, the draw ratio is 2.36 times for the fiber cross section, 2.36 times for the cross fiber, 2.84 times for the hollow fiber and 2.60 times for the solid fiber. Short fibers were obtained.
[0016]
The spun yarn was card-mixed at each blending rate, using Murata Vortex Spinner MVS, manufactured by Murata Machinery Co., Ltd., while drafting 200 selenium sliver 160 times, with a nozzle pressure of 0.45 Mpa and a spinning speed of 400 m / min. Spinned 40 cotton count. However, in Comparative Examples 4 and 5, only the spinning speed was 200 m / min.
[0017]
The knitted fabric had a smooth structure, 22 gauge, and the loop length was 325 mm per 100 wells. The dough is opened, dried after wet treatment, subjected to an intermediate set at 180 ° C. for 30 seconds, then dyed with disperse dye for 20 minutes at 130 ° C. with a liquid dyeing machine, subjected to reduction washing, dehydrated and dried, 160 A finishing set at 30 ° C. for 30 seconds was performed.
[0018]
The evaluation results of Examples and Comparative Examples are shown in Table 1.
[Table 1]

[0019]
The effect of the present invention can be basically measured by comparing the softness of the feeling with respect to Comparative Examples 1 and 2. Comparative Example 1 is a conventional air entangled spun yarn having a hollow fiber and a fineness of 1.6 dtex of 100%, and Comparative Example 2 is a solid fiber having a fineness of 0.8 dtex of 100%. The solid fiber had a flat spun yarn feel without swell, and the hollow fiber had a flat spun yarn feel with a firm feeling.
[0020]
On the other hand, Example 1 is a hollow fiber, a mixed fiber having a fineness of 1.6 dtex and an irregularity of 2.2 and a fineness of 1.6 dtex. Although it has a slight elasticity, it is clearly bulkier than Comparative Example 1. It was a soft texture. Reference Example 1 is a cross-shaped fiber having a profile of 2.2, a fineness of 1.6 dtex, a solid fiber and a fineness of 0.8 dtex, which is clearly bulky and softer than Comparative Example 2. . In Comparative Examples 4 and 5, the air entanglement degree of Example 1 and Reference Example 1 was increased, and although the pilling level was improved, it was rough, flat, and strongly textured.
[0021]
From the above, it can be seen that the degree of contribution to the softness and bulkiness of the auxiliary high-degree fiber is excellent. However, Comparative Example 3, which is a cross-shaped fiber with a degree of profile 2.0 and a blended fiber with a fineness of 3.3 dtex, is hard. It turns out that it is inhibiting. The examples were softer than the comparative examples, and each had a higher number of fluff, but the anti-pilling property was grade 4 or higher, which was a level having sufficient anti-pill performance.
[0022]
【The invention's effect】
According to the present invention, air entangled spun yarn with inevitable texture hardening even with fineness is blended with a high degree of irregularity fiber having a cushioning effect to make a bulky and soft spun yarn feel. Is possible. Therefore, it can be suitably used for inner applications and the like that are soft and require water-absorbing quick-drying performance, heat retention and the like.

Claims (3)

3 or more on the fiber cross-section periphery, atypical degree 1.8 or higher with 6 or fewer projections, fineness and 80 mass% polyester textiles 2 0 wt% to less than 2.5 dtex, the hollow ratio is less than 8% An air-entangled spun yarn, wherein the yarn is entangled by air entanglement with hollow fibers having a fineness of 2.2 dtex or less, and the number of fluffs having a length of 1 mm or more is 100 or more per 10 m of yarn length. The air entangled spun yarn according to claim 1, wherein an air entangled spinning speed at the time of air entanglement is 350 m / min or more .   A flexible knitted or knitted fabric comprising the air-entangled spun yarn according to claim 1 and having an anti-pilling property of 3 or more.