WO2015151820A1

WO2015151820A1 - Stretch woven fabric, and sportswear and swimwear employing same

Info

Publication number: WO2015151820A1
Application number: PCT/JP2015/058132
Authority: WO
Inventors: 田中啓之; 笠原敬子; 中込吉恒
Original assignee: 美津濃株式会社; 東レ株式会社
Priority date: 2014-03-31
Filing date: 2015-03-18
Publication date: 2015-10-08
Also published as: TW201600665A; CN106133223A; JPWO2015151820A1; KR101886769B1; TWI656254B; SG11201608011VA; KR20160119262A; CN106133223B; JP6018337B2

Abstract

　This stretch woven fabric (1) includes elastic yarns, the elastic yarns being arranged in the warp (4) and the weft (5, 6a, 6b). The stretch woven fabric has two-way stretch properties, and includes alternately repeating plain weave sections (2) and double weave sections (3). The elastic yarns are more numerous in the double weave sections (3) than in the plain weave sections (2) and provide reinforcement, and therefore the stretch properties are higher, and wear is easier. The plain weave sections are sunken portions and the double weave sections are raised portions, producing overall a stripe-shaped structure in which sunken and raised portions are arrayed in a single direction, whereby, in the case of swimwear for example, surface friction drag with respect to water flow can be reduced through use while the stripe shapes are aligned with the body height direction. In so doing, there are provided a stretch woven fabric that has high stretch properties, ease of wear, and low surface friction drag, and sportswear or swimwear that includes the fabric.

Description

Stretch fabric and sports clothing and swimsuits including the same

The present invention relates to a stretch fabric having high stretchability, and sports clothing and a swimsuit including the same.

Good sports clothes and swimwear with good stretchability. In addition, one function required for swimwear and caps is to reduce the surface frictional resistance of the swimsuit that occurs during swimming. Conventionally, various stretch fabrics have been proposed, and Patent Document 1 proposes a stretch fabric in which regions having different stresses are formed using weft yarns having different stresses. Patent Documents 2 to 3 propose stretch fabrics having a specific elongation rate. As a technique for reducing the surface frictional resistance of a swimsuit, for example, Patent Document 4 proposes a swimsuit in which a water-repellent portion and a non-water-repellent portion are arranged in a stripe shape in the body length direction. Patent Document 5 proposes that the entire swimsuit is water repellent to form a plurality of fine grooves in the body length direction. Patent Document 6 proposes a swimsuit in which two or more types of synthetic fiber multifilaments having different cross-sectional shapes are arranged in a stripe shape, a convex portion is formed in a perpendicular direction, and the entire surface is water-repellent.

JP 2013-096027 A JP2011-256383A JP 2010-138496 A Japanese Patent No. 3283404 JP 2000-314015 A JP 2008-138345 A

However, the conventional sports clothing and swimsuits have a problem that they are difficult to wear because of low stretchability. Furthermore, there was a problem that the surface frictional resistance was high when it was put on a swimsuit.

In order to solve the above-mentioned conventional problems, the present invention provides a stretch fabric that has high stretchability and is easy to wear and has low surface friction resistance, and sports clothing and a swimsuit including the same.

The stretch fabric of the present invention is a stretch fabric including an elastic yarn, wherein the elastic yarn is arranged in a warp and a weft, the stretch fabric is stretchable in a two-way direction, and a plain weave portion and a double weave portion are alternately arranged. It is characterized by being repeated.

The sports clothing and swimsuit of the present invention are characterized by including the stretch fabric.

In the stretch fabric of the present invention, the elastic yarn is arranged in the warp and the weft, has a stretch property in the two-way direction, and the plain weave portion and the double weave portion are alternately repeated, so that the stretch property is high and easy to wear. In addition, a stretch fabric having a low surface frictional resistance and sports clothing and swimwear including the same can be provided.

FIG. 1 is a schematic plan view of a stretch fabric in which plain weave portions and weft double weave portions of one embodiment of the present invention are alternately repeated. FIG. 2 is a schematic plan view of a stretch fabric in which plain weave portions and warp double weave portions are alternately repeated according to another embodiment of the present invention. FIG. 3A is a schematic plan view of the stretch fabric, and FIG. 3B is a cross-sectional view thereof. FIG. 4A is a schematic plan view of a covering yarn used for the stretch fabric, and FIG. 4B is a schematic plan view of another embodiment of a covering yarn. FIG. 5 is a schematic front view of a swimsuit using the stretch fabric. FIG. 6 is a schematic back view of a swimsuit using the stretch fabric. FIG. 7A is a side view of a cylindrical substrate used for measuring the frictional resistance in water according to an embodiment of the present invention, and FIG. 7B is a cross-sectional view taken along the line II. FIG. 8 is an explanatory view showing an apparatus for measuring the time during which the cylindrical substrate falls in water. FIG. 9 is an explanatory view showing a method and an apparatus for measuring the time during which the cylindrical substrate falls for a predetermined distance in water. FIG. 10 is an explanatory view showing a method and apparatus for measuring the time until a cylindrical substrate enters water from the air in another embodiment of the present invention. FIG. 11A is a perspective view when a cylindrical substrate is developed in one embodiment of the present invention, and FIG. 11B is a plan view of the same. FIG. 12 is a schematic front view of a swimsuit using a stretch fabric according to another embodiment of the present invention. FIG. 13 is a schematic back view of the swimsuit. FIG. 14A is a schematic front view of a swimsuit using a stretch fabric in still another embodiment of the present invention, and FIG. 14B is a schematic back view of the swimsuit. FIG. 15A is a schematic front view of a swimsuit using a stretch fabric in still another embodiment of the present invention, and FIG. 15B is a schematic back view of the swimsuit.

The present invention is a woven fabric in which elastic yarns are arranged in warps and wefts and have stretch properties in the two-way direction. Here, the two-way refers to the vertical direction and the horizontal direction. In this stretch fabric, plain weave portions and double weave portions are alternately repeated in one fabric. Thereby, stretch property becomes high, and it can be set as the stretch fabric which is easy to wear and has low surface friction resistance. The reason for this is that the elastic yarn is arranged and reinforced more in the double woven portion than in the plain woven portion, so that the stretchability becomes high and it is easy to wear. In addition, since the plain weave portion is a concave portion, the double woven portion is a convex portion, and the uneven portion as a whole is arranged in one direction to form a stripe shape. If it is used at a position along the height direction, the surface frictional resistance with the water flow can be lowered.

The double weave portion is preferably a weft double weave or warp double weave. From the viewpoint of production cost, weft double weave is more preferable. With these woven fabric structures, it is only necessary to reinforce the minimum necessary elastic yarn, and the thickness and strength are suitable for sports clothing.

The width of the plain weave portion and the width of the double weave portion are each preferably in the range of 0.125 to 10 mm, and more preferably 0.25 to 5 mm. If it is the said range, stretch property and surface friction resistance can be made compatible.

The elastic yarn is preferably a covering yarn coated and twisted with a synthetic fiber filament yarn. As the covering yarn, a yarn (FTY) in which a filament processed yarn (wooly processed yarn) such as nylon is wound around the elastic yarn of the core yarn, a single covering yarn (SCY), a double covering yarn (DCY), or the like can be used. Among these, FTY-SCY wound with nylon wooly yarn is preferable because it can reduce the weight (unit weight) per unit area.

The thickness of the spandex fiber of the core yarn is preferably 22 decitex or more and 156 decitex or less. The fabric weight is preferably 100 g / m ² or more and 250 g / m ² or less in terms of weight reduction. The spandex yarn to be used may be a known one, such as “Roika” from Asahi Kasei Fibers Co., Ltd. or “Lycra” from Toray Operontex Co., Ltd. Since the stress varies depending on the type of spandex fiber, it is preferable to select an appropriate use region. However, in the case of swimsuits, since it is premised on use in a pool, it is preferable to use spandex fibers with excellent chlorine resistance such as “Royka SP”, “Lycra-176B”, “Lycra-254B”, “Lycra-909B”. It is preferable to use it.

The sheath yarn is preferably a polyamide fiber or a synthetic fiber such as a polyester fiber from the viewpoint of strength and workability. Although there are various types of polyamide-based fibers, nylon 6, nylon 66, nylon 610, and the like are preferably used in terms of strength and processability of spandex blend fabric. The fiber form and the cross-sectional shape of the synthetic fiber used for the sheath yarn are not particularly limited, but in order to obtain a highly stretchable fabric, it is preferable to perform a temporary process by a well-known method and impart crimps. In order to obtain a smooth surface fabric, it is preferable to use straight raw silk.

The stretch fabric preferably has an elongation of 10 to 90% in both the vertical and horizontal directions, as measured by JIS L1096 A method and cut strip method (17.7 N (1.8 kg) load, 5 cm width). 30-70%. If stretch property is the said range, it has moderate elasticity, it is easy to wear and it is suitable for sports clothing including a swimsuit.

The stretch fabric may be used for a part of sports clothing or swimwear, or may be used for all.

This will be described below with reference to the drawings. In the following drawings, the same symbols indicate the same items. FIG. 1 is a schematic plan view of a stretch fabric 1 in which plain weave portions 2 and weft double weave portions 3 according to an embodiment of the present invention are alternately repeated. In the plain weave portion 2, warps 4 and wefts 5 intersect to form a woven fabric. In the weft double weave portion 3, the warp yarn 4 and the

weft yarns

6a and 6b intersect to form a woven fabric. The weft yarn 6a is arranged at the front and the weft yarn 6b is arranged at the back. The thickness of the weft double weave portion 3 is increased. In addition, since the elastic yarn is arranged and reinforced more in the weft double woven portion 3 than in the plain woven portion 2, the stretchability becomes high and it is easy to wear. Further, since the plain weave portion 2 becomes a concave portion and the weft double weave portion 3 becomes a convex portion, the concave and convex portions are arranged in one direction as a whole to form a stripe shape. Therefore, for example, when a swimsuit is used, the surface frictional resistance with the water flow can be lowered by using the stripe shape at a position along the height direction of the body.

FIG. 2 is a schematic plan view of a stretch fabric 7 in which plain weave portions 8 and warp double weave portions 9 according to another embodiment of the present invention are alternately repeated. The plain weave portion 8 is composed of a warp 10 and a weft 11 to form a woven fabric. In the warp double woven portion 9, warps 12a, 12b and wefts 11 intersect to form a woven fabric. The warp yarn 12a is arranged at the front and the warp yarn 12b is arranged at the back. The thickness of the warp double woven portion 9 is increased.

FIG. 3A is a schematic plan view of a stretch fabric 1 according to an embodiment of the present invention, and FIG. 3B is a cross-sectional view thereof. The plain weave portion 2 becomes a concave portion, and the weft double weave portion 3 becomes a convex portion, and when seen in a plan view, the uneven portions are arranged in one direction and become a stripe shape.

FIG. 4 is a schematic plan view of the single covering yarn 13 used for the stretch fabric, in which the core yarn 14 is made of an elastic yarn such as polyurethane, and the single covering yarn 15 is made of a processed yarn such as nylon. FIG. 4B is a schematic plan view of a double covering yarn 16 according to another embodiment, in which the core yarn 17 is an elastic yarn such as polyurethane, and the covering yarn (upper yarn) 19 and the covering yarn (lower yarn) 18 are nylon or the like. It consists of processed yarn.

FIG. 5 is a schematic front view of a swimsuit 20 for swimming using the stretch fabric, and FIG. 6 is a back view of the same. The striped portion 21 from the front abdomen to the top of the swimsuit 20 is a woven fabric in which the plain weave portions and the double weave portions shown in FIGS. 1 and 3 are alternately repeated. The plain portion 22 of the belt portion from the front thigh to the side of the waist and the shoulder to the back of the swimsuit 20 is a plain fabric. The striped portion 21 and the plain portion 22 are sewn. The back surface of the swimming race swimsuit 20 was all made into a striped portion 21 (woven fabric in which plain weave portions and double weave portions were repeated alternately).

It is preferable to make the swimsuit with a pattern that is about 20% to 40% smaller than the human body. When created in this way, it can be worn perfectly on the human body.

Hereinafter, the present invention will be specifically described by way of examples. The present invention is not limited to the following examples.

<Elongation rate>
Measured according to JIS L1096 A method cut strip method. The width of the test piece was 5 cm and the holding interval was 20 cm. The initial load was a load corresponding to gravity applied to a length of 1 m in the width of the test piece. The tensile speed was 20 cm / min. The elongation percentage (%) when loaded with 17.7 N (1.8 kg) was measured. The elongation rate indicates stretch properties.

<Stress at 30% elongation>
The stress (N) at the time of 30% elongation at the time of measuring the elongation rate in the warp and weft directions was measured and converted to 1 cm and displayed as N / cm. The stress at 30% elongation is a standard for evaluating the compression function.

<Friction resistance in water>
The measurement method and apparatus shown in FIGS. 7 to 9 were used. FIG. 7A is a side view of a cylindrical substrate (model) used for this measurement, and FIG. 7B is a cross-sectional view taken along the line II of FIG. 7A. The front end 33 of the cylindrical base body (model) 31 has a spherical shape, and the rear end 34 has a tapered shape. A swimsuit fabric sample 39 is attached to the cylindrical portion 32. For attachment, the dough sample 39 is wound around the cylindrical portion 32, pressed by the

cylindrical jigs

38a and 38b, and the front end portion 33 and the rear end portion 34 are inserted. The area of the dough sample 39 attached to the cylindrical portion 32 is about 0.016 mm ² . A weight 35 is inserted into the lower portion of the cylindrical portion 32. A hollow portion (pipe) 36 is placed in the shaft portion of the cylindrical base body (model) 31, and a wire 37 is inserted therein as shown in FIGS. The weight of the cylindrical substrate (model) 31 in water was 0.3 N with a swimsuit cloth attached, and the volume was 1.2 × 10 ⁻³ m ³ . The whole is made of resin. The hollow portion 36 had a diameter of 2.3 mm. The model 31 had a diameter of 30 mm, a length of 300 mm, and a portion on which the fabric was attached was 200 mm. The mass was set to 88 g including the attached fabric sample, and a weight was attached to the inside of the substrate in consideration of the buoyancy of the fabric and model, so that the weight in water was 0.3 N.

FIG. 8 is an explanatory view showing an apparatus 40 for measuring the time during which the cylindrical substrate falls in water. Water 42 is put in a transparent water tank 41 made of acrylic resin or the like. A shielding sheet 43 is pasted on the back side of the water tank 41, a lamp 44 is arranged on the rear side, and a high speed camera 45 is arranged on the front side. The water tank 41 is made of transparent acrylic resin, has a height (H) of 1.7 m, a width (L) and a depth of 0.22 m, and the high speed camera 45 is located at a position 4.25 m away from the water tank. The height from the surface was 0.85 m. The shooting speed of the high-speed camera 45 was 1900 fps. In this state, the cylindrical substrate (model) 31 is gently dropped from above the water tank. The cylindrical base body (model) 31 falls along the wire 37.

FIG. 9 is an explanatory view showing a method and an apparatus for measuring the time during which the cylindrical substrate falls for a predetermined distance in water. First, the cylindrical base body (model) 31 is arranged so that the rear end thereof is located on the water surface. The laser point 47 is 200 mm below the front end 46, and the first measurement point 48 is 100 mm below, and the second measurement is 100 mm below. Point 49 is set. The laser spot 47 has a hole in the shielding sheet 43 shown in FIG. In this state, the cylindrical base body (model) 31 is gently dropped, and when the tip 46 passes the laser point 47, the high-speed shooting of the high-speed camera is turned on, and the first measurement point 48 to the second measurement point. Measure the time to drop to 49. The measurement is performed 10 times per sample and the average value is used. The acceleration is obtained from the following calculation formula (Equation 1).

u ₁ = k ₁ / t ₁
u ₂ = k ₂ / t ₂
Δt = t ₂
(Where k ₁ is the drop distance (mm) from the laser point 47 to the first measurement point 48 in FIG. 9, t ₁ is the passing time (seconds) from the laser point 47 to the first measurement point 48 in FIG. 9, k ₂ fall distance from the first measurement point 48 to a second measurement point 49 (mm), t ₂ is the transit time from the first measurement point 48 to a second measurement point 49 (seconds), in this example k ₁ is 100 mm and k ₂ were 200 mm.)

The frictional resistance coefficient C _f of the swimsuit fabric in water is calculated by the following equations (Equation 2) and (Equation 3). Measurement accuracy of the frictional resistance coefficient C _f can be issued to a value of 0.001.

Where W is gravity and W = mg (m is the mass of the cylindrical substrate (kg), g is gravitational acceleration (m / s ² )), B is buoyancy and B = ρ _w gV (ρ _w is the density of water ( kg / m ³ ), V is the volume of the cylindrical substrate (m ³ )), D is resistance, and D = C _f × (1/2) × ρu ² A (ρ is the density of water, u is the drop velocity, A Is the surface area of the swimsuit fabric)

FIG. 10 is an explanatory view showing a method and apparatus for measuring the time until a cylindrical substrate (model) enters water from the air in another embodiment of the present invention. A cylindrical base body (model) 31 is allowed to enter water 42 in the water tank from the air. Before entering the water, the swimsuit fabric may be soaked in water for about 1 minute in advance. The description of each step in FIG. 10 is as follows.
(A) State in which cylindrical base body (model) 31 is present in the air (b) State in which tip of cylindrical base body (model) 31 has landed (t ′ ₀ )
(C) to (d) showing a state of entering water (e) a state in which the cylindrical substrate (model) 31 is submerged (t ′ ₁ )

Using a high-speed camera, the times t ₀ and t ₁ are measured. The water entry time T is obtained using the following equation (Equation 4). It can be evaluated that a material sheet having a short water entry time has a low frictional resistance when diving.

FIG. 11A is a perspective view when a cylindrical substrate is developed in one embodiment of the present invention, and FIG. 11B is a plan view thereof. In order to attach the dough sample, the dough is wound around the cylindrical portion 32, pressed by the

cylindrical jigs

38a and 38b, and the leading end portion 33 and the trailing end portion 34 are inserted.

Example 1
1. Thread usage (1) Warp core: Polyurethane (fineness 78decitex, "Lycra" 176B manufactured by Toray Operontex)
Covering yarn: Nylon filament raw yarn (fineness 33decitex, number of filaments 10)
Single covering yarn (SCY)
(2) Weft core: Polyurethane (fineness 44decitex, “Lycra” 254B manufactured by Toray Operontex)
Covering yarn: Nylon filament raw yarn (fineness 33decitex, number of filaments 10)
Single covering yarn (SCY)
(3) Weft wick core: Polyurethane (fineness 55decitex, “Lycra” 254B manufactured by Toray Operontex)
Covering yarn: Nylon filament raw yarn (fineness 33decitex, number of filaments 10)
Single covering yarn (SCY)
2. Fabric A stretch fabric 1 in which plain weave portions 2 and weft double weave portions 3 shown in FIG. 1 are alternately repeated is woven. Using a rapier loom, the warp density of the plain weave portion 2 is 195 / 2.54 cm, the weft density is 156 / 2.54 cm, the warp density of the weft double weave portion is 195 / 2.54 cm, and the weft density is: 230 pieces / 2.54 cm, weight per unit area (weight per unit) 157 g / m ² , plain weave portion 2 width 1.0 mm, same thickness 0.27 mm, weft double weave portion 3 width 1.0 mm, same thickness A 0.44 mm woven fabric was produced. The finished width of the entire fabric was 115 cm.

The elongation rate of this woven fabric was 57.1% in the warp direction, 41.6% in the weft direction, and the stress at the time of 30% elongation was 1.56 N / cm in the warp direction and 1.40 N / cm in the weft direction. Further, the frictional resistance coefficient and the water entry time were as shown in Table 1.

The female swimsuit for swimming shown in FIGS. 5 to 6 was sewn using the fabric of Example 1. When this swimsuit was subjected to a wear test, it was confirmed that the swimsuit was suitable for swimming because of its high stretchability and ease of wearing, and good adhesion to the human skin.

(Example 2)
Using the yarn of Example 1 above, the stretch fabric is the same as Example 1, except that the width of the plain weave portion 2 is other than 0.5 mm and the width of the weft double weave portion 3 is 0.5 mm. A woven fabric was produced. The elongation rate of this woven fabric was 57.1% in the warp direction, 41.6% in the weft direction, and the stress at 30% elongation was 1.56 N / cm in the warp direction and 1.40 N / cm in the weft direction. Table 1 shows the frictional resistance coefficient and water entry time of this fabric.

Example 3
Using the yarn of Example 1, the stretch fabric was the same as Example 1, and the fabric surface was smoothed.
The smoothing process is a process of heating and pressing between a pair of rolls. The roll temperature was 220 ° C., the linear pressure was 5500 kgf, and the roll speed was about 6 to 10 m / min. The elongation rate of this woven fabric was 54.2% in the warp direction, 43.0% in the weft direction, and the stress at 30% elongation was 1.68 N / cm in the warp direction and 1.35 N / cm in the weft direction. Table 1 shows the frictional resistance coefficient and water entry time of this fabric.

Example 4
The stretch fabric of Example 2 was the same as Example 2, and the fabric surface was smoothed. The smoothing process is a process of heating and pressing between a pair of rolls. The roll temperature was 220 ° C., the linear pressure was 5500 kgf, and the roll speed was about 6 to 10 m / min. The elongation rate of this woven fabric was 54.2% in the warp direction, 43.0% in the weft direction, and the stress at 30% elongation was 1.68 N / cm in the warp direction and 1.35 N / cm in the weft direction. Table 1 shows the frictional resistance coefficient and water entry time of this fabric.

(Comparative Example 1)
1. Thread usage (1) Warp core: Polyurethane (fineness 78decitex, "Lycra" 176B manufactured by Toray Operontex)
Covering yarn: nylon filament wooly processed yarn (fineness 33decitex, 10 filaments)
Single covering yarn (SCY)
(2) Weft core: Polyurethane (Finety 55decitex, “Lycra” 254B manufactured by Toray Operontex)
Covering yarn: nylon filament wooly processed yarn (fineness 33decitex, 10 filaments)
Single covering yarn (SCY)
2. Weaving using a rapier loom, a plain fabric having a warp density of 178 / 2.54 cm, a horizontal density of 180 / 2.54 cm, a weight per unit area (weight per unit) of 132 g / m ² , and a thickness of 0.30 mm. Produced. The finished width of the entire fabric was 122 cm.
The elongation rate of this woven fabric was 56.2% in the warp direction, 46.2% in the weft direction, and the stress at 30% elongation was 2.02 N / cm in the warp direction and 2.40 N / cm in the weft direction. Further, the frictional resistance coefficient and the water entry time were as shown in Table 1.

(Comparative Example 2)
1. Thread usage (1) Warp core: Polyurethane (fineness 78decitex, "Lycra" 176B manufactured by Toray Operontex)
Coated yarn: Nylon filament raw yarn (fineness 33decitex, 26 filaments)
Single covering yarn (SCY)
(2) Weft core: Polyurethane (Finety 55decitex, “Lycra” 254B manufactured by Toray Operontex)
Coated yarn: Nylon filament raw yarn (fineness 33decitex, 26 filaments)
Single covering yarn (SCY)
2. Weaving using a rapier loom, a plain weave with a warp density of 180 / 2.54 cm, a weft density of 178 / 2.54 cm, a weight per unit area (weight per unit) of 135 g / m ² and a thickness of 0.28 mm. Produced. The finished width of the entire fabric was 117 cm.
The stretch rate of this woven fabric was 56.2% in the warp direction, 51.9% in the weft direction, and the stress at 30% elongation was 2.08 N / cm in the warp direction and 3.02 N / cm in the weft direction. Further, the frictional resistance coefficient and the water entry time were as shown in Table 1.

(Comparative Example 3)
1. Thread usage (1) Warp core: Polyurethane (fineness 78decitex, "Lycra" 176B manufactured by Toray Operontex)
Covering yarn: nylon filament wooly processed yarn (fineness 33decitex, 10 filaments)
Single covering yarn (SCY)
(2) Weft core: Polyurethane (Finety 55decitex, “Lycra” 254B manufactured by Toray Operontex)
Covering yarn: nylon filament wooly processed yarn (fineness 33decitex, 10 filaments)
Single covering yarn (SCY)
(3) Weft wick core: Polyurethane (fineness 55decitex, “Lycra” 254B manufactured by Toray Operontex)
Covering yarn: nylon filament wooly processed yarn (fineness 33decitex, 10 filaments)
Single covering yarn (SCY)
2. Weaving Using a rapier loom, the weft double weave warp density: 188 pieces / 2.54 cm, weft density: 260 pieces / 2.54 cm, weight per unit area (weight per unit area) 166 g / m ² , the same thickness of 0. A 42 mm woven fabric was produced. The finished width of the entire fabric was 115 cm. The stretch rate of this woven fabric was 51.5% in the warp direction, 57.6% in the weft direction, and the stress at 30% elongation was 1.92 N / cm in the warp direction and 2.60 N / cm in the weft direction. Further, the frictional resistance coefficient and the water entry time were as shown in Table 1.

(Comparative Example 4)
(1) Front cationic dyeable polyester (fineness 56 decitex, 24 filaments)
(2) Back polyurethane (fineness 44 decitex, "Lycra" 254B manufactured by Toray Operontex)
A half structure was knitted on a 32-gauge single tricot knitting machine.
Well: 80 / 2.54cm, Course: 135 / 2.54cm
The weight (unit weight) per unit area was 304 g / m ² , the thickness was 0.55 mm, and the finished width of the entire knitted fabric was 150 cm. The elongation rate was 122.9% in the warp direction, 106.1% in the weft direction, and the stress at the time of 30% elongation was 1.06 N / cm in the warp direction and 0.44 N / cm in the weft direction. This knitted fabric is called a plain knitted fabric.

Next, the surface of the plain woven fabric was smoothed. The smoothing process is a process of heating and pressing between a pair of rolls. The roll temperature was 220 ° C., the linear pressure was 5500 kgf, and the roll speed was about 6 to 10 m / min. This fabric is called a smooth processed product. Table 1 shows the frictional resistance coefficient and water entry time of the smooth processed product.

(Comparative Example 5)
(1) Front cationic dyeable polyester (fineness 44 decitex, 36 filaments)
(2) Back polyurethane (fineness 44 decitex, “Lycra” 254B manufactured by Toray Operontex)
A half structure was knitted on a 32-gauge single tricot knitting machine.
Well: 80 / 2.54cm, Course: 120 / 2.54cm
The weight (unit weight) per unit area was 220 g / m ² , the thickness was 0.53 mm, and the finished width of the entire knitted fabric was 150 cm. The elongation rate was 132.8% in the warp direction, 128.2% in the weft direction, and the stress at the time of 30% elongation was 0.90 N / cm in the warp direction and 0.24 N / cm in the weft direction. This knitted fabric is called a plain knitted fabric.

Comparative Examples 1 to 5 are existing swimsuit fabrics. Compared to the conventional product (Comparative Examples 1 to 5), the woven fabrics of Examples 1 to 4 had lower frictional resistance coefficients in water and shorter water entry times.

(Example 5)
FIG. 12 is a schematic front view of a swimsuit 50 for swimming using the stretch fabric of Example 1, and FIG. 13 is a back view of the same. The striped portion 51 from the front abdomen to the top of the swimsuit 50 is a fabric in which plain weave portions and double weave portions are alternately repeated. The plain portion 52 of the belt portion from the front thigh to the side of the waist and from the shoulder to the back of the swimsuit 50 is a plain fabric. The striped portion 51 and the plain portion 52 are sewn. When this swimsuit was subjected to a wear test, it was confirmed that the swimsuit was suitable for swimming because of its high stretchability and ease of wearing, and good adhesion to the human skin.

(Example 6)
14A is a schematic front view of a swimsuit for swimming 53 using the stretch fabric of Example 1, and FIG. 14B is a back view of the same. From the back side of this swimsuit 53, the stripe portions 54 on both sides of the thigh and the lower abdomen are woven fabrics in which plain weave portions and double weave portions are alternately repeated. The plain portion 55 from the front thigh to the abdomen is a plain fabric. The striped portion 54 and the plain portion 55 are sewn. When this swimsuit was subjected to a wear test, it was confirmed that the swimsuit was suitable for swimming because of its high stretchability and ease of wearing, and good adhesion to the human skin.

(Example 7)
15A is a schematic front view of a swimsuit 56 for swimming using the stretch fabric of Example 1, and FIG. 15B is a back view of the same. From the back side of the swimsuit 56, the stripe portions 57 on both sides of the thigh and the lower abdomen are woven fabrics in which plain weave portions and double weave portions are alternately repeated. The plain portion 58 from the front thigh to the abdomen is a plain fabric. The striped portion 57 and the plain portion 58 are sewn. When this swimsuit was subjected to a wear test, it was confirmed that the swimsuit was suitable for swimming because of its high stretchability and ease of wearing, and good adhesion to the human skin.

The stretch fabric of the present invention is preferably used as clothing that is in close contact with the human body or clothing that requires compression (specific pressure), specifically swimwear, marathon or trail run tights, spats, shirts, skatewear, Various sportswear such as ski wear, jumpsuit, leotard, soccer wear, baseball uniform, and climbing wear, and clothing and supporters such as sports underwear and underwear with a support function can be exemplified as preferable applications.

DESCRIPTION OF SYMBOLS 1,7 Stretch woven

fabric

2,8 Plain woven part 3 Weft double

woven part

4,10,12a,

12b Warp yarn

5,6a, 6b, 11 Weft 9 Warp double woven part 13

Single covering yarn

14,17

Core yarn

15, 18, 19 Coated yarn 16 Double covering yarn 20 Swimsuit 31 Cylindrical substrate (model)
32

Swimwear fabrics

33, 46 Model tip 34 Model rear end 40 Friction resistance measuring device 41 Water tank 42 Water 43 Shielding sheet 44 Lamp 45 High speed camera 47 Laser point 48 First measurement point 49 Second measurement point

Claims

A stretch fabric containing elastic yarn,
The elastic yarn is arranged on the warp and the weft, and the stretch fabric is stretchable in the two-way direction,
A stretch fabric characterized in that plain weave portions and double weave portions are repeated alternately.
The stretch fabric according to claim 1, wherein the double weave portion is a weft double weave or a warp double weave.
The stretch woven fabric according to claim 1 or 2, wherein the plain woven portion is a concave portion, the double woven portion is a convex portion, and the concave and convex portions are arranged in one direction as a whole.
The stretch woven fabric according to any one of claims 1 to 3, wherein a width of the plain woven portion and a width of the double woven portion are 0.125 to 10 mm, respectively.
The stretch woven fabric according to any one of claims 1 to 4, wherein the elastic yarn is a covering yarn coated and twisted with a synthetic fiber filament yarn.
6. The stretch fabric has an elongation percentage of 10 to 90% measured by JIS L1096 A method and cut strip method (17.7 N (1.8 kg) load, 5 cm width) in both the vertical and horizontal directions. Stretch fabric according to crab.
Sports clothing including the stretch fabric according to any one of claims 1 to 6.
A swimsuit comprising the stretch fabric according to any one of claims 1 to 6.
In the stretch fabric, the plain weave portion is a concave portion, the double woven portion is a convex portion, the uneven portions are arranged in one direction as a whole and have a stripe shape, and the stripe shape is along the height direction of the body The swimsuit according to claim 8 arranged at a position.