JP3695293B2 - Swimsuit - Google Patents

Description

【００６１】
【発明の効果】
本発明の水着は、従来の水着に比べ、ポリウレタン系弾性糸を混用しなくても伸長率と伸長回復率に優れ、また、防透け性も具備し、競泳用、遊泳用、学童用など幅広い分野に適応できるものであり、効率よく低コストで製造可能である。
【図面の簡単な説明】
【図１】荷重−伸長回復曲線の説明図である。
【図２】本発明に使用する繊維の繊維横断面形状の一例を示すモデル図である。
【図３】実施例１、比較例１の編地の編方図の一例である。
【図４】実施例２、比較例２の編地の編方図の一例である。
【符号の説明】
Ｌ１：編地の伸び
Ｌ２：編地の歪み伸び
Ｌ３：編地の回復伸び
ａ〜ｇ：繊維横断面形状
Ｆ１〜Ｆ２：編機の給糸口ＮＯ
イ〜ハ：編地構成糸[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a swimsuit that is excellent in elongation rate, elongation recovery rate, and anti-permeability.
[0002]
[Prior art]
Swimsuits for swimming that compete at a speed of 1/100 second, swimsuits for swimming on the beach or hotel pool in summer, swimsuits for schoolchildren to wear during elementary and junior high school physical education, and health maintenance There are many swimsuits such as fitness swimsuits.
[0003]
Since these swimsuits move the entire body violently, they are required to have a good stretch and recovery ability that fits the body sufficiently, does not interfere with the movement of the body, and follows the movement. Furthermore, a non-translucent property that is not transparent even when wet is required.
[0004]
Conventionally, swimsuits made of knitted fabrics in which polyurethane-based elastic fibers called spandex are combined with nylon fibers or polyester fibers are generally used in order to obtain fit as a swimsuit, and stretch and recovery properties.
[0005]
However, although polyurethane-based elastic fibers have a high stretch property, when they are mixed, the texture becomes hard as a characteristic property of polyurethane, and the texture and drape properties of the swimsuit tend to decrease. In addition, when mixed with polyester fiber, it is difficult to be dyed with polyester disperse dyes, resulting in the problem of washing liquid contamination and the problem of reduced fastness to wet friction of swimsuits. For this reason, the dyeing process such as the enhancement of reduction cleaning becomes complicated, and it is difficult to dye in a desired color. Furthermore, since heat resistance is inferior, there is a problem of roughening of the swimsuit surface. In addition, the cost of the polyurethane elastic fiber is very high.
[0006]
When polyurethane elastic fibers are combined with nylon fibers or polyester fibers, the polyurethane elastic fibers are stretched and knitted approximately twice in the knitting stage of the knitted fabric in order to obtain stretchability and recoverability as a swimsuit. Therefore, the total fineness is reduced to about one-half to form a knitted fabric, and since the fiber substrate is transparent, white, skin color, yellow, pink, cream, light There is a problem that when it is dyed in a medium-light color such as blue and sewn on a swimsuit, it is transparent.
[0007]
Further, for example, a method comprising a knitted fabric mixed with polybutylene terephthalate fiber has been adopted. However, even if this fiber is mixed, it is not possible to obtain a swimsuit having a stretch property that is still satisfactory.
[0008]
[Problems to be solved by the invention]
The present invention solves the above-mentioned problems of the prior art, and has excellent stretchability and recoverability while maintaining mechanical strength, chemical resistance, dyeing processability, soft feeling, swelling feeling, etc. An object of the present invention is to provide a swimsuit comprising a knitted fabric and to provide such a swimsuit efficiently and at low cost.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the present invention adopts the following configuration. That is,
(1) A composite fiber filament yarn in which different types of polyester polymers are bonded side-by-side along the fiber length direction, a three-dimensional coil crimp is expressed, and the coil phase of the single fiber of the constituent yarn is It is composed of a knitted fabric containing 10% by weight or more of different composite fiber filament yarns, having an average elongation rate of 70% or more in the vertical and horizontal directions, and an average elongation recovery rate of 75% or more. A swimsuit characterized by having a LY value of the ground of 6% or less.
[0011]
(2) The swimsuit according to (1) above, wherein the single fiber fineness of the composite fiber filament bonded to the side-by-side mold is 0.1 to 11 dtex and the total fineness is 22 to 165 dtex.
[0012]
(3) The swimsuit according to (1) or (2) , wherein the basis weight of the knitted fabric is 140 to 330 g / m ² .
[0013]
DETAILED DESCRIPTION OF THE INVENTION
The swimsuit knitted fabric of the present invention includes a composite fiber filament in which different types of polyester polymers are bonded in a side-by-side manner along the fiber length direction.
[0014]
A side-by-side type composite fiber is one in which polymers having different types, inherent viscosities, copolymerization components, copolymerization rates, and the like are bonded together, and crimps are developed due to differences in their elastic recovery rate and shrinkage characteristics. In the case of a combination of polymers having different viscoelasticity, the stress is concentrated on the high viscosity side during spinning and drawing, so that the internal strain differs between the two components. Therefore, the high-viscosity side contracts due to the difference in elastic recovery rate after stretching and the heat shrinkage rate difference in the heat treatment process of the knitted fabric, and distortion occurs in the single fiber, which takes the form of a three-dimensional coil crimp. It can be said that the diameter of the three-dimensional coil and the number of coils per unit fiber length are determined by the shrinkage difference (including the elastic recovery rate difference) between the high shrinkage component and the low shrinkage component. Smaller and more coils per unit fiber length.
[0015]
Coil crimps required as a stretch material for swimwear, etc. have a small coil diameter, a large number of coils per unit fiber length (excellent elongation characteristics and good appearance), and good resistance to settling of the coil ( The amount of settling of the coil in accordance with extension recovery is small and the stretch retention is excellent), and the hysteresis loss at the time of extension recovery of the coil is small (excellent elasticity and good fit).
[0016]
While satisfying these requirements, it has a characteristic as polyester, for example, moderate tension, draping property, and high dyeing fastness, so that it can be a swimwear material excellent in total balance. Here, in order to satisfy the coil characteristics described above, the characteristics of the high shrinkage component (high viscosity component) are important. Since the expansion and contraction characteristics of the coil are dominated by the expansion and contraction characteristics of the high contraction component with the low contraction component as a fulcrum, the polymer used for the high contraction component is required to have high extensibility and recovery characteristics.
[0017]
Accordingly, as a result of intensive studies to satisfy the above-mentioned properties without impairing the properties of the polyester, the present inventors use a polyester mainly composed of polytrimethylene terephthalate (hereinafter abbreviated as PTT) as a high shrinkage component. I found it preferable. PTT fibers have the same mechanical and chemical properties as polyethylene terephthalate (hereinafter abbreviated as PET) and polybutylene terephthalate (hereinafter abbreviated as PBT) fibers, which are typical polyester fibers, and are stretch-recoverable. It is extremely excellent. This is because the methylene chain of the alkylene glycol part in the crystal structure of PTT is a Gauche-Gauche structure (the molecular chain is bent at 90 degrees), and further, the density of restraint points due to the interaction between benzene rings (stacking, parallel) This is because the molecular chain can be easily stretched and recovered by the rotation of the methylene group.
[0018]
Here, PTT is a polyester obtained using terephthalic acid as the main acid component and 1.3-propanediol as the main glycol component. However, it may contain a copolymer component capable of forming another ester bond at a ratio of 20 mol%, more preferably 10 mol% or less. Examples of copolymerizable compounds include dicarboxylic acids such as isophthalic acid, succinic acid, cyclohexanedicarboxylic acid, adipic acid, dimer acid, sebacic acid, and 5-sodium sulfoisophthalic acid, ethylene glycol, diethylene glycol, butanediol, and neopentyl glycol. And diols such as cyclohexanedimethanol, polyethylene glycol, polypropylene glycol and the like, but are not limited thereto. Further, if necessary, titanium dioxide as a matting agent, silica or alumina fine particles as a lubricant, hindered phenol derivatives as an antioxidant, coloring pigments and the like may be added.
[0019]
The low-shrinkage component is not particularly limited as long as it is a fiber-forming polyester that has good interfacial adhesion with PTT, which is a high-shrinkage component, and has stable yarn-making properties. PTT, PET, and PBT having fiber forming ability are preferable in consideration of physical properties and raw material prices.
[0020]
The melt viscosity at the spinning temperature of PTT is preferably 1.0 to 5.0 times the melt viscosity at the spinning temperature of the other low shrinkage component. By setting the ratio to 1.0 times or more, preferably 1.1 times or more, the PTT receives a larger spinning stress during fiber formation of spinning, and a stronger crimp expression ability can be obtained. On the other hand, when the ratio is 5.0 times or less, preferably 4.0 times or less, the composite form can be easily controlled, and the bending of the discharged polymer below the die can be suppressed to a level that does not cause any problem in spinning.
[0021]
Moreover, the composite ratio of both components is preferably in the range of high shrinkage component: low shrinkage component = 75: 25 to 35:65 (% by weight) in terms of yarn production and dimensional homogeneity of the coil in the fiber length direction. : The range of 35-45: 55 is more preferable.
[0022]
The diameter of this coil is preferably 250 μm or less, and more preferably 200 μm or less. In addition, when the phase of the coil formed in the length direction of the filament yarn is the same as the coil phase of all the single fibers constituting the yarn, one filament yarn and one spring-like yarn Become. A swimsuit made of a knitted fabric using the yarn has a soft feeling with fluffy, and the surface has a beautiful surface with fine wrinkles. On the contrary, when the coil phases of all the single fibers constituting the yarn are different, one filament yarn becomes a false twisted / untwisted temporary twisted yarn having one fluff. A swimsuit made of a knitted fabric using the yarn has a soft feeling with further flaming, and a surface having a flat and beautiful surface can be obtained. When obtaining a knitted fabric for swimwear, which one should be adopted may be properly selected according to the use, preference, etc., such as a swimsuit for swimming, a swimsuit for swimming.
[0023]
In addition, the fiber cross-sectional shape of the side-by-side type composite fiber is a round cross section, a triangular cross section, a multi-lobe cross section, a flat cross section, a Dalma type cross section, a C type cross section, an M type cross section, an H type cross section, an X type cross section, an I cross section. The mold section and + mold section can be used, but from the balance of crimp development and texture, the semicircular side-by-side (a) of the round section as shown in FIG. A hollow side-by-side (d) is preferably used in the case, and a triangle-side side-by-side (g) is preferably used in the case of a swimsuit aiming at a dry texture.
[0024]
The side-by-side type composite fiber is preferably composed of filament yarns having a single yarn fineness of 0.1 to 11 dtex and a total fineness of 22 to 165 dtex. By setting the single yarn fineness to 11 dtex or less, the texture of the swimsuit can be made soft, and can be preferably used as a swimsuit. Moreover, composite yarn-making becomes favorable by setting it as 0.1 dtex or more, More preferably, 1.1 dtex or more, Moreover, a crimped structure is reflected and favorable stretch property can also be obtained. Further, yarns having different single yarn finenesses such as mixed yarns of different finenesses may be used. Such a different fineness mixed yarn is preferable from the viewpoint of making a swimsuit composed of a soft and stretchy knitted fabric.
[0025]
The mixing ratio of the side-by-side type composite fiber to the constituent yarn of the knitted fabric is 10% by weight or more, preferably 20% by weight or more, and more preferably 30% by weight or more. When this mixing ratio is less than 10% by weight, it becomes difficult to obtain good characteristics with respect to the average elongation rate in the warp and transverse directions of the knitted fabric, which will be described later, and the average elongation recovery rate. As a method of mixing side-by-side type composite fibers into the knitted fabric, normal knitting, twisting, aligning, covering, blending, etc. with other materials can be adopted. What is necessary is just to use suitably according to a ground formation method, a knitting organization, etc.
[0026]
As other materials, polyester fibers, polyamide fibers, polypropylene fibers, polyurethane fibers, etc., which are synthetic fibers, can be applied.
[0027]
In addition, the knitted fabric for swimwear of the present invention is characterized in that an excellent elongation rate, elongation recovery rate, and fit can be obtained without using polyurethane elastic fibers as in the past. Furthermore, in order to obtain superior knitted fabric characteristics, polyurethane elastic fibers may be mixed within a range that does not impair the texture and dyeability.
[0028]
This swimwear knitted fabric includes single circular knitted fabric and double circular knitted fabric that are circular knitted fabric, single tricot knitted fabric and double tricot knitted fabric that are warp knitted fabric, single raschel knitted fabric and double raschel knitted fabric, These can also be knitted by each dedicated knitting machine.
[0029]
In addition, as the knitting structure, any of the knitted tissues of the swimwear such as the knitting structure of the circular knitted fabric, the interlock organization, the jacquard organization, the half organization of the warp knitted fabric, the satin organization, the jacquard organization can be used It is not particularly limited.
[0030]
As for the knitting conditions in this knitting, it is preferable to make the loop length and runner length slightly larger than the knitting conditions for normal yarn use, and to make the knitting density coarse. This allows the composite fiber bonded to the side-by-side type to pass through the dyeing process, so that its crimp expression is fully demonstrated, and it has excellent stretch properties, softness, and a swollen texture with a feeling of swelling. Knitted fabric can be obtained.
[0031]
In the present invention, the basis weight of the knitted fabric is preferably 140 to 330 g / m ² . By setting the basis weight to 140 g / m ² or more, it is possible to obtain a waterproof effect of the swimsuit. On the other hand, by setting it as 330 g / m < ² > or less, it does not become too heavy as a knitted fabric, and even when worn, it feels heavy and does not hinder movement, and wearability is also good.
[0032]
The heat treatment, scouring and dyeing of the knitted green machine knitted fabric may be performed in accordance with the usual processing method for knitted fabrics for water wear, but the latent crimp of side-by-side type composite fiber is more effective as a spring structure. Therefore, it is preferable to set the relaxation / scouring heat treatment temperature to 80 ° C. or higher in order to express the target. In addition, as ancillary processing at the dyeing stage, water repellent processing, antifouling processing, antibacterial processing, deodorization processing, deodorization processing, antifungal processing, UV absorption processing, and further post processing, calendar processing, embossing processing, wrinkle processing, It is desirable to give appropriately according to the required characteristics for swimwear seed use such as printing.
[0033]
It is important for the knitted fabric of the present invention that the average elongation rate in the vertical and horizontal directions is 70% or more, and the average elongation recovery rate in the vertical and horizontal directions is 75% or more.
[0034]
The average elongation rate and the average elongation recovery rate can be measured by the method shown in the examples. The elongation rate represents the degree of elongation of the knitted fabric, and the larger this value, the more the swimwear was worn. It is easy to follow the movement of the body, and the swimsuit follows the intense movement such as swimming, so it is easy to move and is hard to get tired. The stretch recovery rate indicates the degree of recovery of a swimsuit that has been stretched due to body movements to quickly return to its original state. The larger this value, the better the fit when worn in a swimsuit. Indicates that it is easy to move. It is necessary to consider the elongation rate and the elongation recovery rate by averaging the values in the warp direction and the transverse direction of the knitted fabric. This is because when a swimsuit is actually worn and moved, the knitted fabric is stretched in three dimensions according to the roundness of the human body. Because. This three-dimensional stretch characteristic correlates well with the average stretch rate, which is the average stretch rate in the warp direction and the horizontal direction of the knitted fabric, and the average stretch recovery rate.
[0035]
The average stretch rate in the warp and transverse directions of the knitted fabric in the present invention is 70% or more, preferably 80% or more, more preferably 90% or more. When the average elongation rate is less than 70%, wearing in a bathing suit and performing intense swimming makes it difficult for the bathing suit to follow the movement of the body and it is easy to get tired.
[0036]
Further, the average elongation recovery rate in the warp and transverse directions of the knitted fabric in the present invention is 75% or more, preferably 80% or more, more preferably 85% or more. If the average stretch recovery rate is less than 75%, the swimsuit stretched by swimming is stretched, and the fit to the body is inferior, making it difficult to follow the movement of the body. Moreover, it will be inferior in appearance as a swimsuit.
[0037]
It is important that the LY value of the knitted fabric used for the swimsuit of the present invention is 6% or less. Although this LY value can be measured by the method shown in the Examples, it shows the degree of see-through of the knitted fabric for swimwear.
[0038]
From the viewpoint of sufficiently imparting the anti-penetration effect of white-to-skin, yellow, pink, cream, light blue, and other mid-to-light swimwear, the lower the LY value, the better, 5% or less is preferable. 4% or less is more preferable. In the case of dark colors such as black and dark blue, a knitted fabric design that can achieve an LY value of 4% or less unless mesh fabric is knitted or a particularly thin knitted fabric is satisfied. It becomes important.
[0039]
The swimsuit of the present invention can be widely developed as follows by selecting as appropriate. For example, it can be preferably used for a swimsuit for swimming, a swimsuit for swimming, a swimsuit for school children, a swimsuit for fitness, a swimsuit for swimming school, a swimsuit for rehabilitation, and the like.
[0040]
In addition, knitted fabrics for swimwear are generally used for swimming hats, leotards, athletic tights, athletic under half pants, cycle pants, and the like, so that these knitted fabrics can also be preferably applied to this application.
[0041]
【Example】
Hereinafter, the present invention will be described using examples. Each evaluation in the examples was performed as follows.
[0042]
(1) Melt viscosity Measured in a nitrogen atmosphere using a Capillograph 1B manufactured by Toyo Seiki Co., Ltd. The temperature shown in the examples (275 ° C. in Example 1) was taken as the measurement temperature, the measurement at a strain rate of 6080 sec ⁻¹ was performed three times, and the average value was taken as the melt viscosity.
[0043]
(2) Average elongation rate First, the elongation rate was tested in accordance with the grab method of the constant speed elongation method of JIS L 1018 "Testing method of knitted fabric". That is, three 10 cm × about 15 cm test pieces were sampled in the vertical and horizontal directions. Using a constant-speed extension type tensile tester with a self-recording device, both the upper and lower grips are 2.54cm x 2.54cm on the front side and 2.54cm x 5.08cm on the back side, and the grip interval is 7.6cm. It was fixed to the grip by removing the slack and tension.
This was stretched to a load of 17.7 N (1.8 kg) at a tensile speed of 10 cm / min, and the gripping interval at that time was measured. Immediately thereafter, the load was returned to 7.6 cm, which was the original gripping interval, in the direction of removing the load. This behavior due to load-deweight was drawn as a load-elongation-recovery curve on a self-recording recorder (see FIG. 1).
Based on this, the elongation LA (%) was obtained by the following formula and expressed as an average value of three sheets.
Elongation rate LA (%) = [(L1-L) / L] × 100
L: Grasp interval (mm)
L1: Grasp interval when extended to 17.7N (mm)
The elongation rates for the warp direction and the horizontal direction of the knitted fabric were added, and the added value was halved to obtain the average elongation rate.
[0044]
(3) Average elongation recovery rate Further, the elongation recovery rate LB (%) is based on the load-elongation-recovery curve drawn with the self-recording recorder, and the residual strain rate L2 ( %), The elongation recovery rate LB (%) was calculated by the following formula, and expressed as the average value of the three sheets.
Elongation rate recovery rate LB (%) = (L3 / L1) × 100
The elongation recovery rate for each of the warp direction and the horizontal direction of the knitted fabric was added, and the added value was halved to obtain an average elongation recovery rate.
[0045]
(4) LY value Measurement was performed using a colorimeter SM-3 type manufactured by Suga Test Instruments Co., Ltd. First, the blackness in the measurement sample installation part was confirmed. That is, a felt cloth dyed black was attached to the measurement part, and it was confirmed that the L value (lightness) of the felt cloth was 14 ± 0.5%.
[0046]
Next, the whiteness in the measurement sample installation part was confirmed. That is, a standard white plate was attached to the measurement unit, and it was confirmed that the L value (brightness) of the standard white plate was 91 ± 0.5%. These confirmation procedures are general methods for measuring the L value (brightness) of the cloth, and are generalized methods. The L value of a fabric with high whiteness is close to 91%, and the L value of a black fabric is close to 14%.
[0047]
Next, the measurement of the test piece was performed as follows. First, a black felt cloth and one test piece were attached to the measurement unit, the L value was measured, and the measurement value was LR. Furthermore, a standard white plate and the same test piece were attached to the measurement part, L value was measured, the measured value was set to LW, and the difference (LW-LR) between LW and LR was calculated | required.
[0048]
Permeability LY value (%) = (LW−LR)
The same test piece was repeatedly measured 5 times, an average value of 5 times was obtained, and an LY value indicating the degree of see-through property was obtained.
[0049]
(5) Comprehensive evaluation Displayed in two stages as follows.
Judgment display ○: Excellent as a swimsuit ×: Inferior as a swimsuit
[0050]
[Example 1]
A homo-PTT having an intrinsic viscosity (IV) of 1.40 at 275 ° C. and a homo-PTT having an intrinsic viscosity of 0.60 at 275 ° C. and a homo-PET having an intrinsic viscosity (IV) of 0.60 and 275 ° C. were melted separately, respectively, and the spinning temperature It was discharged from a 48-hole composite spinneret at 275 ° C. at a composite ratio (% by weight) of 50:50 and taken up at a spinning speed of 1400 m / min to obtain a side-by-side composite structure undrawn yarn. Further, the film was stretched using a hot roll-hot plate stretching machine, and then continuously relaxed and wound up without taking it up to obtain a stretched yarn of 83 dtex 48 filaments (the fiber cross section is a in FIG. 2).
[0051]
In the 28G double-sided circular knitting machine, both the constituent yarns I and B in the knitting diagram of FIG. 3 are fed to the yarn feeders F1 and F2 in the knitting diagram using the above-mentioned side-by-side composite filament yarns of PTT / PET, An interlock structure knitted fabric made of 100% PTT / PET side-by-side composite filament yarn was knitted.
[0052]
This raw machine was subjected to relaxation / scouring, dyeing, and finishing set in accordance with a normal polyester circular knitting dyeing method to obtain an amber knitted fabric of 175 g / m ² . The obtained knitted fabric was excellent in stretch properties, with a vertical / horizontal average elongation of 81% and an average elongation recovery of 88%. Further, the LY value indicating the degree of see-through was 2.4%. Using this knitted fabric, a swimsuit for school children was made and subjected to wear evaluation. As a result, it was easy to move and had no sense of sheerness, and was suitable as a swimsuit comprehensively. Detailed results are shown in Table 1.
[0053]
[Example 2]
4 except that the fineness and the number of filaments are the same as in Example 1 using the side-by-side composite filament yarn of PTT / PET (the fiber cross-section is a in FIG. 2). The PTT / PET side-by-side composite filament yarn is arranged on the back side constituting yarn C, and the polyester filament yarn ("Tetron" manufactured by Toray Industries, Inc.) 44 decitex 36 filaments is arranged on the front side constituting yarn D. Half-knitted fabric was knitted. The yarn blend ratio (% by weight) in this knitted fabric design was 30% for the PTT / PET side-by-side composite yarn and 70% for the normal yarn.
[0054]
This raw machine was subjected to relaxation / scouring, dyeing, and finishing set according to a normal polyester warp knitting method, and a yellow knitted fabric of 224 g / m ² was obtained. The obtained knitted fabric was excellent in stretch properties, with a vertical and horizontal average elongation of 78% and an average height recovery of 85%. Further, the LY value indicating the degree of see-through was also 5.1%. Using this knitted fabric, a swimsuit for swimming was prototyped and subjected to wear evaluation. As a result, it was easy to move and had no sense of sheerness, and was suitable as a swimsuit comprehensively. Detailed results are also shown in Table 1.
[0055]
[Comparative Example 1]
Using the same circular knitting machine as in Example 1, both the constituent yarns I and B in the knitting diagram of FIG. 3 are polyester filament temporary twisted yarn 83 dtex 48 filament yarn, which is a normal yarn, and a yarn feeder F1 in the knitting diagram is shown. Each of the yarns F2 was fed, and an interlock structure knitted fabric composed of 100% normal yarn was knitted.
[0056]
This green machine was subjected to the same dyeing process as in Example 1 to obtain a scarlet knitted fabric of 164 g / m ² . The obtained knitted fabric was inferior in stretch properties as a swimsuit with a vertical and horizontal average elongation rate of 65% and an average height recovery rate of 71%. The LY value indicating the degree of see-through was 2.8%.
[0057]
Using this knitted fabric, a school swimsuit was made in the same manner as in Example 1 and subjected to wear evaluation, but although it did not show through, it was difficult to move and was generally judged unsuitable as a swimsuit. Detailed results are also shown in Table 1.
[0058]
[Comparative Example 2]
Using the same warp knitting machine as in Example 2, 44 dtex polyurethane-based elastic yarn (trademark “Lycra” manufactured by Toray DuPont Co., Ltd.) was placed on the back side constituting yarn C in the knitting diagram of FIG. Polyester filament yarn (“Tetron” manufactured by Toray Industries, Inc.) 44 dtex 36 filament, which is a normal yarn, was arranged on the front side constituting yarn D, and a half-textured knitted fabric was knitted. The yarn mixture ratio (% by weight) in this knitted fabric design was 20% for polyurethane-based elastic yarns and 80% for normal yarns.
[0059]
This raw machine was subjected to relaxation, scouring, dyeing and finishing set according to a dyeing method of a knitting warp knitted fabric of normal polyester and polyurethane elastic yarn to obtain a yellow knitted fabric of 210 g / m ² . The obtained knitted fabric is excellent in stretch characteristics such as 85% in the vertical and horizontal average elongation and 90% in the average height recovery rate, but has an inferior LY value of 6.7% indicating the degree of see-through. It was a thing. Using this knitted fabric, a swimsuit for swimming was made in the same manner as in Example 2 and subjected to wear evaluation, but although it was easy to move, there was a sense of sheerness and it was judged that it was generally inappropriate as a swimsuit. Detailed results are also shown in Table 1.
[0060]
[Table 1]

[0061]
【The invention's effect】
The swimsuit of the present invention is superior in stretch rate and stretch recovery rate without using polyurethane-based elastic yarns compared to conventional swimsuits, and also has a see-through property, and is widely used for swimming, swimming, school children, etc. It can be adapted to the field and can be manufactured efficiently and at low cost.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a load-elongation recovery curve.
FIG. 2 is a model diagram showing an example of a fiber cross-sectional shape of a fiber used in the present invention.
FIG. 3 is an example of a knitting diagram of the knitted fabric of Example 1 and Comparative Example 1;
4 is an example of a knitting diagram of a knitted fabric of Example 2 and Comparative Example 2. FIG.
[Explanation of symbols]
L1: Elongation of knitted fabric L2: Strain elongation of knitted fabric L3: Recovery elongation of knitted fabric ag: Fiber cross-sectional shape F1-F2: Yarn feeder NO of knitting machine
I ~ Ha: Knitting fabric yarn

Claims (3)

A composite fiber filament yarn in which different types of polyester polymers are bonded side-by-side along the fiber length direction, and a three-dimensional coil crimp is developed, and the coil phase of the single fiber of the component yarn is different. It is composed of a knitted fabric containing composite fiber filament yarns of 10% by weight or more of the entire constituent yarn, having an average elongation rate of 70% or more in the vertical and horizontal directions, and an average elongation recovery rate of 75% or more, and LY of the knitted fabric A swimsuit characterized by a value of 6% or less. The swimsuit according to claim 1 , wherein the single fiber fineness of the composite fiber filament bonded to the side-by-side mold is 0.1 to 11 dtex, and the total fineness is 22 to 165 dtex. Swimming garment according to claim 1 or 2, characterized in that the basis weight of the knitted fabric is 140~330g / ^{m 2.}

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