KR20180015557A - Swimsuit - Google Patents

Abstract

A swimwear (1) comprising a cloth having elasticity and water-repellent treatment, wherein at least a part of the swimwear includes a stripe pattern in a body length direction, the stripe pattern includes a concave stripe portion (2) And the convex stripe portion 3 has an independent concave pattern 4, as shown in Fig. It is preferable that the bottom portion of the concave portion 4 independent of the bottom portion of the concave portion stripe portion 2 is shallow. It is preferable that the independent recessed pattern 4 is rectangular and the diagonal lines are arranged along the longitudinal direction of the body or the independent recessed pattern 4 is arranged in the shape of an ellipse or a rectangle and the major axis is along the longitudinal direction of the body. It is preferable that the concave stripe portion 2 and the independent concave portion 4 are formed by embossing. This provides a swimwear with low surface frictional resistance.

Description

Swimwear {SWIMSUIT}

The present invention relates to a swimming bathing suit. More preferably, the present invention relates to a swimming swim suit.

One function required of a swimwear or cap depends on how much it reduces the surface frictional resistance in the water of the swimwear that occurs during the swim. Various swimwears have been proposed in the past, and Patent Literature 1 proposes swimsuits in which stripe patterns are formed by embossing. The present applicant proposes a swimwear in which stripes, water-repellent portions and non-water-repellent portions formed by embossing are arranged in stripes in the body length direction in Patent Documents 2 to 4.

Japanese Patent Application Laid-Open No. 2002-212811 Japanese Patent Application Laid-Open No. 2000-226709 Japanese Patent Application Laid-Open No. 2000-314015 Japanese Patent Application Laid-Open No. 2006-348398

However, the conventional swimsuit has a problem of high surface frictional resistance, and further improvement is required.

The present invention provides a swimwear having a low surface friction resistance in order to solve the above-described conventional problems.

The swimwear according to the present invention is a swimwear made of a cloth that is water-repellent and has elasticity. The swimwear includes at least a striped pattern in the longitudinal direction of the body, wherein the striped pattern includes a concave stripe portion and a convex stripe portion, And the convex stripe portion has an independent concave pattern.

The swimwear according to the present invention includes a stripe pattern in the longitudinal direction of the body and is water repellent. The stripe pattern includes a concave stripe portion and a convex stripe portion. The convex stripe portion has an independent concave pattern , A swimwear having a low surface frictional resistance can be provided.

1 is a schematic plan view of a swimwear cloth according to an embodiment of the present invention.
Fig. 2A is an enlarged plan view of the swimsuit cloth shown in Fig. 1, and Fig. 2B is an enlarged view of a recessed pattern of Fig. 2A when the edge of the rhombic pattern is rounded.
Fig. 3 is a cross-sectional view of the swimwear fabric of Fig. 2 taken along line II. Fig.
4 is a schematic plan view of the swimwear.
5 is a schematic rear view of the swimwear.
Fig. 6A is a schematic front view of a swimwear according to another embodiment of the present invention, and Fig. 6B is a schematic rear view of the swimwear.
FIG. 7A is a side view of a cylindrical body used for measuring friction resistance in water in an embodiment of the present invention, and FIG. 7B is a cross-sectional view of the base taken along the line II.
8 is an explanatory view showing an apparatus for measuring the time during which a cylindrical gas falls in water.
Fig. 9 is an explanatory diagram showing a method and an apparatus for measuring the time during which a cylindrical gas falls at a predetermined distance in water. Fig.
Fig. 10A is a perspective view when the cylindrical gas is expanded, and Fig. 10B is a plan view thereof.

The swimwear according to the present invention comprises a striped pattern in the longitudinal direction of the body and is made of swimwear by sewing a water-repellent cloth. This cloth stripe pattern includes concave stripe portions and convex stripe portions, and by forming independent concave portions in the convex stripe portions, the surface frictional resistance can be lowered. That is, the convex stripe portion remains as it is in the fabric structure, but if a small independent concave pattern is formed thereon, the surface frictional resistance becomes low. The independent concave patterns include circles, ellipses, rivets, rhombuses, and squares. The area of one of the indented recess patterns is preferably 0.05 to 5 mm ² , more preferably 0.1 to 4 mm ² . It is preferable that the stripe pattern and the independent concave pattern in the convex stripe portion are formed on the entire surface of the swimsuit, but they may be formed on a part of the swimsuit. When formed in a part, it is preferably not less than 50%, more preferably not less than 70%, and even more preferably not less than 90% in area ratio.

The widths of the recessed stripe portion and the convex stripe portion are each preferably 3 to 15 mm, more preferably 5 to 12 mm. In the above-mentioned range, the surface frictional resistance is lowered. The widths of the concave stripe portion and the convex stripe portion may be the same or different, but it is preferable that the width of the concave stripe portion is narrower. In addition, it is preferable that the bottom portion of the concave portion independent of the bottom portion of the concave stripe portion is shallow. This makes it possible to further reduce the surface frictional resistance.

Preferably, the independent recessed pattern is rectangular and the diagonal lines are disposed along the longitudinal direction of the body. The rectangle is preferably a rhombus. Particularly, it is preferable to arrange a long and thin diamond pattern along the longitudinal direction of the body. It is desirable to round the corners of the diamond pattern in a circular shape. This makes it possible to further reduce the surface frictional resistance. Further, the independent recessed pattern may be an elliptical shape or a long circular shape, and the major axis may be disposed along the longitudinal direction of the body. This makes it possible to further reduce the surface frictional resistance.

It is preferable that the independent recessed patterns are regularly arranged. Accordingly, turbulence can be prevented from occurring and the surface frictional resistance can be further reduced. It is preferable that the concave stripe portion and the independent concave portion are formed by embossing. By embossing, an accurate pattern can be given.

In the present invention, the cloth may be a fabric or a knitted fabric. As an example, there are knit fabrics having stretchability in both the longitudinal and transverse directions by the knitting of synthetic fiber multifilament yarn and spandex fiber. The knitted fabric may be a circular knitted fabric, a double knitted fabric, a double knitted fabric, a tricot knitted fabric, a tricot knitted fabric, or a raschel knitted fabric. However, the knitted fabric may be stretchable, From the viewpoint of thinness and the like, tricose is more preferable.

When a stronger supporting force is required, it is more preferable to use a fabric in which a composite yarn in which spandex fibers are covered with synthetic fiber multifilament yarns is used as warp yarns or weft yarns.

The fineness of the spandex fiber is preferably 22 decitex or more and 156 decitex or less. The spandex fibers to be used may be any of those known in the art. For example, " Lycra "of Asahi Chemical Fiber Co., Ltd. or" Lycra " Depending on the kind of the spandex fiber, the stress is different, and therefore it is preferable to select it appropriately according to the use area. However, it is preferable to use spandex fibers excellent in chlorine resistance, such as "Roica SP", "Lycra 176B", "Lycra 254B", and "Lycra 909B".

Synthetic fibers Multifilament yarns are preferably made of synthetic fibers such as polyamide-based fibers and polyester fibers in terms of strength and workability. The fiber shape and the cross-sectional shape of the synthetic fiber are not particularly limited. However, in order to produce a highly stretchable cloth, it is preferable to perform false-twist processing by a well-known method to impart crimp, In order to make this smooth cloth, it is preferable to use straight yarn.

The stretch cloth preferably has an elongation percentage of 30 to 250% as measured by a cut strip method (17.7 N (1.8 kg) load, 5 cm width) in both longitudinal and transverse directions, preferably 60 to 180% desirable. When the stretchability is in the above-mentioned range, it is suitable for sports clothes including swimwear because it has appropriate stretchability and is easy to wear.

In the case of a fabric, the stretch cloth is preferably a flat cloth, a twill, or the like, and the knitted fabric is preferably a tricot knit, a racelet knit or the like. The stretch cloth described above may be used for a part of a bathing suit or for all of them.

Swimwear Swimwear should be made in a pattern about 10% to 40% smaller than the human body. With this manufacturing, it can be worn to fit the human body.

The following description will be made with reference to the drawings. In the drawings, the same reference numerals denote the same elements. 1 is a schematic plan view of a swimwear cloth 1 according to an embodiment of the present invention. This swimwear cloth 1 includes a striped pattern along the body longitudinal direction (stretching direction) 5, and the striped pattern includes a concave stripe portion 2 and a convex stripe portion 3, The sub-stripe portions 3 are formed with independent recessed patterns 4. Fig. 2A is an enlarged plan view of the swimwear cloth of Fig. 1; Fig. The recessed pattern 4 is formed with a diamond pattern along the body longitudinal direction (stretching direction) 5. Fig. 2B is an enlarged view of the concave portion of Fig. 2A when rounded corners are rounded. Fig.

Fig. 3 is a cross-sectional view of the swimwear cloth shown in Fig. 2 taken along the line I-I. In the present example, the bottom portion of the concave portion 4 independent of the bottom portion of the concave stripe portion 2 is shallow.

FIG. 4 is a schematic front view of a female swimwear according to an embodiment of the present invention, and FIG. 5 is a schematic rear view of the swimwear. This swimsuit 20 is made up of a stripe pattern 21 made up of a concave stripe portion and a convex stripe portion (the independent concave pattern in the convex stripe portion is not shown).

FIG. 6A is a schematic front view of a men's swimwear according to another embodiment of the present invention, and FIG. 6B is a schematic rear view of the swimsuit. The swimsuit 22 is made up of a stripe pattern 23 (a concave pattern in the convex stripe portion is not shown) made up of a concave stripe portion and a convex stripe portion.

Example

Hereinafter, the present invention will be described in detail with reference to Examples. The present invention is not limited to the following examples.

<Elongation rate>

And measured according to the JIS L1096 A cut strip method. The test specimens were 5 cm wide and 20 cm wide. The first load was the width of the test specimen, which corresponds to the gravity load of 1 m. And a tensile speed of 20 cm / min. The elongation percentage (%) at 17.7 N (1.8 kg) load was measured. Elongation rate indicates stretchability.

<Friction resistance in water>

The measuring method and apparatus shown in Figs. 7 to 9 were used. Fig. 7A is a side view of a cylindrical base body (model) used for this measurement, and Fig. 7B is a sectional view taken along the line II of Fig. 7A. The tip (33) of the cylindrical base (model) (31) is spherical, and the tip (34) has a tip. A cloth sample 39 of a bathing suit is mounted on the cylindrical portion 32. The mounting is carried out by winding the cloth sample 39 on the cylindrical portion 32 and pressing the cylindrical jig 38a and 38b and inserting the front end portion 33 and the rear end portion 34. The area of the cloth 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. Further, a hollow portion (pipe) 36 is inserted into the shaft portion of the cylindrical base (model) 31, and the wire 37 is inserted thereinto as shown in Figs. 8 to 9. The weight of the cylindrical body (model) 31 in water was 0.3 N in the state of wearing a swimwear cloth, and the volume was 1.2 × 10 ^-3 m ³ . The whole is made of resin. The diameter of the hollow portion 36 was 2.3 mm. The model 31 has a diameter of 30 mm and a length of 300 mm, and the portion where the cloth is mounted is 200 mm. The mass was adjusted to 88 g including the mounted cloth sample, and a weight was attached to the inside of the base in consideration of the buoyancy of the cloth and the model, and the weight was uniformed to 0.3 N in water.

8 is an explanatory view showing an apparatus 40 for measuring the time during which a cylindrical gas falls in water. Water 42 is placed in a transparent water tank 41 made of acrylic resin or the like. A shielding sheet 43 is adhered to the back side of the water tray 41. A lamp 44 is disposed on the rear side and a high speed camera 45 is disposed on the front side. The water tank 11 is made of a transparent acrylic resin and has a height H of 1.7 m, a width L of 0.22 m and a height of 0.22 m. The high speed camera 15 is located at a distance of 4.25 m from the water tank, Of 0.85 m in height. The photographing speed of the high-speed camera 15 was set at 1900 fps. In this state, the cylindrical body (model) 31 is carefully dropped from above the water tub. The cylindrical gas (model) 31 drops along the wire 37.

Fig. 9 is an explanatory view showing a method and an apparatus for measuring the time during which a cylindrical gas falls at a predetermined distance in water. Fig. First, the rear end of the cylindrical base (model) 31 is located on the water surface, the laser point 47 is located 200 mm below the tip 46, and the first measurement point 48 is 100 mm below the laser point 47, And a second measuring point (49) is located 100 mm below the measuring point. The laser spot 47 has a hole in the shielding sheet 43 shown in Fig. In this state, the cylindrical base (model) 31 is carefully dropped. When the tip 46 of the cylindrical base (model) 31 passes the laser point 47, high-speed photographing of the high-speed camera is turned on and the first measurement point 48 ) To the second measurement point 49 is measured. Measure 10 times per sample and use the average value. The acceleration is obtained from the following equation (Equation 1).

[Equation 1]

(Where k ₁ is the drop distance (mm) from the laser point 47 to the first measurement point 48 in Fig. 9 and t ₁ is the distance from the laser point 47 in Fig. 9 to the first measurement point 48, K ₂ is the drop distance (mm) from the first measurement point 48 to the second measurement point 49 and t ₂ is the second measurement point 48 from the first measurement point 48, The passing time (second) to point 49, in this example, k ₁ was 100 mm, and k ₂ was 200 mm.

The frictional resistance coefficient C _f of the swimwear cloth in water is calculated by the following equation (formula 2) (formula 3). The measurement accuracy of the frictional resistance coefficient C _f can be calculated up to a value of 0.001.

[Equation 2]

[Equation 3]

Where W is the gravity and W = mg (m is the mass of the cylindrical gas in kg, g is the gravitational acceleration in m / s ² ), B is the buoyancy and B = ρ _w gV (ρ _w is the density of water in kg / ( ³ ), V is the volume of the cylindrical gas (m ³ )), D is the resistance and D = C ^f × (1/2) × ρu ² (where ρ is the density of the water, u is the falling velocity, Surface area)

Fig. 10A is a perspective view of the cylindrical base member, and Fig. 10B is a plan view thereof. In order to mount the cloth sample, the cloth is wound around the cylindrical portion 32, the cylindrical jig 38a, 38b is pressed, and the front end portion 33 and the rear end portion 34 are inserted.

(Example 1)

<Use of yarn>

Polyester multifilament yarn (44 decitex) and spandex fiber ("Lycra 254B" 44 decitex) were used.

<Knitting>

A knit tricot knitting machine was knitted using a 32 gauge tricot knitting machine. The knitted fabric was dyed and subjected to a water-repellent treatment. The water-repellent treatment was fixed to the knitted fabric using a known fluorine-based water repellent agent. Subsequently, emboss processing was performed. The embossing was performed at a roll temperature of 220 캜, a linear pressure of 5500 kgf, and a roll speed of about 6 to 10 m / min. The knitted fabric had a mass per unit area of 230 g / m ² . The frictional resistance value of the knitted fabric measured by the measuring device of Figs. 7 to 9 was 0.078. The dimensions in FIG. 2 are as follows.

Total length of concave stripe portion and convex stripe portion a1: 16 mm

Width a2 of concave stripe portion 2: 7 mm

The width a3 of the convex portion stripe portion 3: 9 mm

Lengths (a4, a6) from both ends of the convex stripe portion 3 to the end of the concave portion 4: 1 mm

The width (a5) of the concave portion diamond pattern (4): 1 mm

The length (a7) of the concave diamond pattern (4): 1.14 mm

The interval (a8) in the longitudinal direction of the body of the concave portion diamond pattern (4): 2.3 mm

The depth of the concave stripe portion 2: about 0.05 mm

Depth of concave diamond (4): about 0.03 mm

Thickness of knitted fabric: 0.60 mm

The elongation percentage of the knitted fabric was 134% in the longitudinal direction (body length direction) and 123% in the transverse direction.

<Swimwear>

The swimwear for swimming games shown in Figs. 4 to 6 was sewn using the obtained knitted fabric. It was confirmed that the swimwear was suitable for a swimming game because it had high stretchability, easy wearability, good adhesion to the skin of the human body, low resistance to water flow, and the like.

(Example 2)

<Practical use>

The yarn used was: nylon filament yarn (fineness 33 decitex, number of filaments 10), core yarn: "Lycra 176B" (fineness 44 decitex) and single covering yarn (SCY).

<Fabric>

Using the yarns described above, a stretch fabric was produced. A rapier loom was used, and the vertical density was 180 pieces / 2.54 cm, the lateral density was 178 pieces / 2.54 cm, the weight per unit area was 135 g / m ² , and the thickness was 0.28 mm. The tissues were plain weights. This fabric was subjected to water repellency processing and emboss processing in the same manner as in Example 1. The elongation of this fabric was 56.2% in the warp direction and 51.9% in the weft direction. The coefficient of friction resistance was 0.077. The swimwear for swimming games shown in Figs. 4 to 6 was sewn using the obtained knitted fabric. This swimwear was tested, and it was confirmed that the swimwear was suitable for a swimming game because it had high stretchability, easy wearability, good adhesion to human skin, and low water resistance.

(Comparative Example 1)

A knitted fabric was produced in the same manner as in Example 1 except that the concave portion diamond pattern (4) was not produced. The frictional resistance coefficient of the obtained knitted fabric was 0.081. The swimwear for swimming games shown in Figs. 4 to 6 was sewn using the obtained knitted fabric. When the swimwear was tested, the resistance to water flow was higher than that of Example 1.

(Comparative Example 2)

A fabric was produced in the same manner as in Example 2 except that the concave portion diamond pattern (4) was not produced. The frictional resistance coefficient of the obtained fabric was 0.079. The swimwear for swimming games shown in Figs. 4 to 6 was sewn using the obtained knitted fabric. When the swimwear was tested, the resistance to water flow was higher than in Example 2.

[Industrial applicability]

The swimwear cloth of the present invention can be applied to various sportswear such as marathon, trail run tights, pants, shirt, skate suit, ski suit, jump suit, leotard, soccer uniform, baseball uniform, An undergarment, an undergarment having a support function, and the like can be exemplified as a preferable use.

One; Swimwear cloth
2: concave stripe portion
3: convex stitch portion
4: Independent concave pattern
5: Body length direction (elongation direction)
20, 22: Swimwear
21, 23: striped pattern
31: Cylindrical Gas (Model)
32: swimsuit cloth
33 46: Fleet of the model
34: the rear end of the model
40: Friction resistance measuring device
41: aquarium
42: water
43: Shielding sheet
44: Lamp
45: High Speed Camera
47: laser dot
48: First measurement point
49: second measuring point

Claims (13)

A swimwear comprising a cloth having elasticity and water-repellent treatment, wherein at least a part of the swimwear includes a stripe pattern in a body length direction,
Wherein the stripe pattern includes a concave stripe portion and a convex stripe portion, the convex stripe portion including an independent concave pattern. The method according to claim 1,
Wherein a bottom portion of the independent recessed pattern is shallower than a bottom portion of the concave stripe portion. 3. The method according to claim 1 or 2,
Wherein the independent indentation pattern is rectangular and the diagonal line is disposed along the body longitudinal direction. 3. The method according to claim 1 or 2,
Wherein the independent recessed pattern is elliptical or oblong, and the major axis is disposed along the longitudinal direction of the body. 5. The method according to any one of claims 1 to 4,
Wherein the independent recessed pattern is regularly arranged. 6. The method according to any one of claims 1 to 5,
Wherein the recessed stripe portion and the independent recessed pattern are embossed patterns. 7. The method according to any one of claims 1 to 6,
Wherein one of said independent indentations has an area of 0.05 to 5 mm ² . 8. The method according to any one of claims 1 to 7,
Wherein the stripe pattern and the independent concave pattern in the convex stripe portion are formed on the entire surface of the swimwear or in an area ratio of 50% or more. 9. The method according to any one of claims 1 to 8,
And the widths of the concave stripe portion and the convex stripe portion are respectively 3 to 15 mm. 10. The method according to any one of claims 1 to 9,
Wherein the cloth of the swimwear is a knit fabric having stretchability in both the longitudinal and transverse directions by a knit of synthetic fiber multifilament yarn and spandex fiber. 10. The method according to any one of claims 1 to 9,
The cloth of the swimsuit is a fabric using a composite yarn in which spandex fibers are covered with synthetic fiber multifilament yarns as warp yarns and weft yarns. 12. The method according to any one of claims 1 to 11,
The swimsuit cloth has stretchability and has an elongation of 30 to 250% measured by a cut strip method (17.7 N (1.8 kg) load, 5 cm width) in both longitudinal and transverse directions according to JIS L1096 A. 13. The method according to any one of claims 1 to 12,
The swimwear is a swimming swim suit, and is made in a pattern of about 10% to 40% smaller than the human body.

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