JP6012817B1 - Swimsuit - Google Patents

Abstract

A swimsuit with low surface frictional resistance is provided. SOLUTION: A swimsuit (1) made of a stretchy water-repellent treated fabric, at least partially including a stripe pattern in the body length direction, wherein the stripe pattern has a concave stripe portion (2) and a convex portion Including the stripe portion (3), the convex stripe portion (3) has an independent concave pattern (4). It is preferable that the bottom part of the recessed part handle (4) which is independent from the bottom part of the recessed part stripe part (2) is shallower. The independent recess pattern (4) is rectangular and the diagonal line is arranged along the body length direction, or the independent recess pattern (4) is elliptical or oval and the long axis is arranged along the body length direction. Is preferred. The recess stripe portion (2) and the independent recess pattern (4) are preferably formed by embossing. [Selection] Figure 1

Description

  The present invention relates to a swimsuit for swimming. More preferably, it relates to a swimsuit for swimming.

  One function required for swimwear and caps is to reduce the surface frictional resistance of the swimsuit that occurs during swimming. Conventionally, various swimsuits have been proposed, and Patent Document 1 proposes a swimsuit having a stripe pattern by embossing. In the patent documents 2 to 4, the present applicant has proposed a swimsuit in which a stripe pattern by embossing, a water repellent portion, and a non-water repellent portion are arranged in a stripe shape in the body length direction.

Japanese Patent Laid-Open No. 2002-212811 JP 2000-226709 A JP 2000-31015 A JP 2006-348398 A

  However, the conventional swimsuit has a problem of high surface friction resistance, and further improvement has been demanded.

  The present invention provides a swimsuit having a low surface frictional resistance in order to solve the conventional problems.

Swimsuit of the present invention, there is provided a swimsuit made from a dough having elasticity and the water-repellent properties, at least in part, comprises a striped body length direction, said stripe pattern includes a recess stripe portion and the convex portion stripe portion, The convex stripe portion has an independent concave pattern.

  The swimsuit of the present invention includes a stripe pattern in the body length direction and is water-repellent, and the stripe pattern includes a recessed stripe portion and a protruding stripe portion, and the protruding stripe portion has an independent recessed portion pattern. Thus, it is possible to provide a swimsuit having a low surface frictional resistance.

FIG. 1 is a schematic plan view of a swimsuit fabric according to one embodiment of the present invention. 2A is an enlarged plan view of the swimsuit fabric of FIG. 1, and FIG. 2B is an enlarged view of the concave handle of FIG. 2A when the corners of the rhombus are trimmed in a circle. 3 is a cross-sectional view taken along line II of the swimsuit fabric of FIG. FIG. 4 is a schematic plan view of the swimsuit. FIG. 5 is a schematic back view of the swimsuit. FIG. 6A is a schematic front view of a swimsuit in still another embodiment of the present invention, and FIG. 6B is a schematic back view of the swimsuit. 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. 10A is a perspective view when the cylindrical substrate is developed, and FIG. 10B is a plan view thereof.

The swimsuit of the present invention is a swimsuit formed by sewing fabric that includes a stripe pattern in the body length direction and is water repellent. The fabric stripe pattern includes a concave stripe portion and a convex stripe portion, and by forming an independent concave pattern on the convex stripe portion, the surface frictional resistance can be lowered. In other words, the convex stripe portion remains the fabric structure, but if a small independent concave pattern is formed here, the surface frictional resistance is lowered. Independent recess patterns include circles, ellipses, ellipses, diamonds, squares, and the like. The area of one independent recess pattern is preferably 0.05 to ⁵ mm ² , more preferably 0.1 to ⁴ mm ² . The stripe pattern and the independent concave pattern in the convex stripe part are preferably formed on the entire surface of the swimsuit, but may be formed in part. When part is formed, the area ratio is preferably 50% or more, more preferably 70% or more, more preferably 90% or more.

  As for the width | variety of a recessed part stripe part and a convex part stripe part, 3-15 mm each is preferable, More preferably, it is 5-12 mm each. If it is this range, surface friction resistance will become low. The widths of the recessed stripe portion and the raised stripe portion may be the same or different, but the width of the recessed stripe portion is preferably narrower. Moreover, it is preferable that the bottom part of the recessed part pattern independent from the bottom part of the recessed part stripe part is shallower. Thereby, surface friction resistance can be made lower.

  It is preferable that the said independent recessed part handle is a rectangle, and it is arrange | positioned so that a diagonal line may follow a body length direction. The rectangle is preferably a rhombus. In particular, it is preferable to arrange elongated rhombuses (diamond patterns) along the body length direction. The corners of the rhombus are preferably rounded. Thereby, surface friction resistance can be made lower. Moreover, the said independent recessed part handle may be elliptical or oval, and may be arrange | positioned so that a long axis may follow a body length direction. Thereby, surface friction resistance can be made lower.

  It is preferable that the independent recess patterns are regularly arranged. Thereby, generation | occurrence | production of a turbulent flow can be prevented and surface friction resistance can be made lower. Moreover, it is preferable that the said recessed part stripe part and the independent recessed part handle are formed by embossing. By embossing, an accurate pattern can be given.

In the present invention, the fabric may be woven or knitted. As an example, there is a knitted fabric having stretch properties in both the vertical and horizontal directions by knitting synthetic fiber multifilament yarn and spandex fiber. In addition, as the form of the knitted fabric, a single circular knitted fabric that is a circular knitted fabric, a double circular knitted fabric, a warp knitted fabric, a tricot fabric or a raschel fabric can be used, but a stretch that affects the ease of movement Tricot fabric is more preferable from the viewpoints of properties and fabric thinness.
When a stronger support force is required, the material form is preferably a woven fabric using spandex fibers covered with synthetic multifilament yarns for warp and weft.

  The fineness of the spandex fiber is preferably 22 decitex or more and 156 decitex or less. The spandex fiber to be used may be a known one, such as “Roika” from Asahi Kasei Fiber 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, it is assumed that it will be used in a pool, so it is preferable to use spandex fibers with excellent chlorine resistance such as “Roika SP”, “Lycra 176B”, “Lycra 254B”, “Lycra-909B”. Is preferred.

  Synthetic fibers such as polyamide fibers and polyester fibers are preferred for the synthetic fiber multifilament yarn from the viewpoint of strength and workability. The fiber form and cross-sectional shape of the synthetic fiber are not particularly limited, but in order to obtain a highly stretchable fabric, it is preferable that the fabric is processed temporarily by a known method and crimped, and the surface is smooth. In order to achieve this, it is preferable to use straight raw silk.

  The stretch fabric preferably has an elongation of 30 to 250% as measured by the JIS L1096 A method cut strip method (17.7 N (1.8 kg) load, 5 cm width) in both the vertical and horizontal directions, more preferably 60-180%. 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.

  In the case of a woven fabric, the stretch fabric is preferably a plain woven fabric or a twill woven fabric, and the knitted fabric is preferably a tricot knitted fabric or a raschel knitted fabric. The stretch fabric may be used for a part of the swimsuit or may be used for the whole.

  The swimsuit is preferably made in a pattern that is about 10% to 40% smaller than the human body. When created in this way, it can be worn perfectly on the human body.

  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 swimsuit fabric 1 according to an embodiment of the present invention. The swimsuit fabric 1 includes a stripe pattern along the body length direction (length direction) 5, and the stripe pattern includes a concave stripe portion 2 and a convex stripe portion 3, and the concave stripe pattern 4 is independent of the convex stripe portion 3. Is formed. FIG. 2A is an enlarged plan view of the swimsuit fabric of FIG. The concave pattern 4 has a diamond pattern formed along the body length direction (length direction) 5. FIG. 2B is an enlarged view of the concave pattern in FIG. 2A when the corners of the rhombus are trimmed in a circle.

  3 is a cross-sectional view taken along line II of the swimsuit fabric of FIG. In this example, the bottom part of the concave handle 4 that is independent from the bottom part of the concave stripe part 2 is shallower.

  FIG. 4 is a schematic front view of a women's swimsuit in one embodiment of the present invention, and FIG. 5 is a schematic back view of the swimsuit. The swimsuit 20 is composed of a stripe pattern 21 (not shown in the figure of an independent recess pattern in the convex stripe part) composed of a concave stripe part and a convex stripe part.

  FIG. 6A is a schematic front view of a men's swimsuit in still another embodiment of the present invention, and FIG. 6B is a schematic back view of the swimsuit. The swimsuit 22 is composed of a stripe pattern 23 (not shown in the drawing of an independent recess pattern in the convex stripe portion) composed of a concave stripe portion and a convex stripe portion.

  The present invention will be specifically described below with reference to 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.

<Friction resistance in water>
The measurement method and apparatus shown in FIGS. 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 11 is made of a 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 15 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 15 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. 10A is a perspective view when the cylindrical base is developed, and FIG. 10B 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
<Thread use>
Polyester multifilament raw silk (44 decitex) and spandex fiber ("Lycra 254B" 44 decitex) were used.
<Knitting>
A knitted fabric of a half tricot structure was knitted using a 32-gauge tricot knitting machine. This knitted fabric was dyed and water-repellent. The water repellent treatment was fixed to the knitted fabric using a known fluorine-based water repellent treatment agent. It was then embossed. Embossing was performed at a roll temperature of 220 ° C., a linear pressure of 5500 kgf, and a roll speed of about 6 to 10 m / min. This knitted fabric had a mass (unit weight) of 230 g / m ² per unit area. The frictional resistance value of this knitted fabric measured with the measuring device of FIGS. 7 to 9 was 0.078. Each dimension in FIG. 2 was as follows.
Total length a1: 16 mm of the concave stripe portion and the convex stripe portion
Width a2 of recessed stripe portion 2: 7 mm
Width a3 of convex stripe part 3: 9 mm
Lengths a4, a6 from both ends of the convex stripe portion 3 to the end of the concave diamond pattern 4: 1 mm each
Concave diamond pattern 4 width a5: 1 mm
Concave diamond pattern 4 length a7: 1.14 mm
Spacing in the body length direction of the concave diamond pattern 4 a8: 2.3 mm
Depth of recessed stripe portion 2: about 0.05 mm
Depth of concave diamond pattern 4: about 0.03 mm
Knitting thickness: 0.60mm
The stretch rate of the knitted fabric was 134% in the vertical direction (body length direction) and 123% in the horizontal direction.
<Swimsuit>
The swimsuit for swimming shown in FIGS. 4 to 6 was sewn using the obtained knitted fabric. When this swimsuit was subjected to a wear test, it was confirmed that it was a swimsuit suitable for swimming because it was highly stretchable and easy to wear, had good adhesion to the human skin, and felt low in water resistance.

(Example 2)
<Thread use>
Cover yarn: Nylon filament raw yarn (fineness 33 decitex, 10 filaments), core yarn: “Lycra 176B” (fineness 44 decitex), single covering yarn (SCY).
<Textile>
Using the above yarn, a stretch fabric was prepared. Using a rapier loom, the vertical density was 180 pieces / 2.54 cm, the horizontal density was 178 pieces / 2.54 cm, the weight per unit area (unit weight) was 135 g / m ² , and the thickness was 0.28 mm. The woven structure was a plain weave. This woven fabric was water-repellent and embossed in the same manner as in Example 1. The elongation percentage of the woven fabric was 56.2% in the warp direction and 51.9% in the weft direction. The frictional resistance coefficient was 0.077. The swimsuit for swimming shown in FIGS. 4 to 6 was sewn using the obtained knitted fabric. When this swimsuit was subjected to a wear test, it was confirmed that it was a swimsuit suitable for swimming because it was highly stretchable and easy to wear, had good adhesion to the human skin, and felt low in water resistance.

(Comparative Example 1)
A knitted fabric was produced in the same manner as in Example 1 except that the concave diamond pattern 4 was not produced. The coefficient of friction resistance of the obtained knitted fabric was 0.081. The swimsuit for swimming shown in FIGS. 4 to 6 was sewn using the obtained knitted fabric. When this swimsuit was subjected to a wear test, the water flow resistance was felt higher than in Example 1.

(Comparative Example 2)
A woven fabric was produced in the same manner as in Example 2 except that the concave diamond pattern 4 was not produced. The resulting fabric had a frictional resistance coefficient of 0.079. The swimsuit for swimming shown in FIGS. 4 to 6 was sewn using the obtained knitted fabric. As a result of wearing this swimsuit, the water flow resistance was felt higher than that of Example 2.

  The swimsuit fabric of the present invention includes various sportswear such as marathon and trail run tights, spats, shirts, skate wear, ski wear, jumpsuit, leotard, soccer wear, baseball uniform, and climbing wear in addition to swimwear. Examples of preferred applications include clothing and supporters such as sports innerwear and underwear with support functions.

DESCRIPTION OF SYMBOLS 1 Swimsuit cloth 2 Concave stripe part 3 Convex part stripe part 4 Independent concave part pattern 5 Body length direction (height direction)
20,22 Swimsuit 21,23 Stripe pattern 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 (13)

A swimsuit made of a fabric having stretchability and water repellent properties, comprising at least a portion, the stripes in the body length direction,
The stripe pattern includes a concave stripe portion and a convex stripe portion,
The swimsuit characterized in that the convex stripe part has an independent concave pattern.   The swimsuit according to claim 1, wherein a bottom portion of the recessed recess pattern independent from a bottom portion of the recessed stripe portion is shallower.   The swimsuit according to claim 1 or 2, wherein the independent concave handle is rectangular, and the diagonal line is arranged along the body length direction.   The swimsuit according to claim 1 or 2, wherein the independent concave handle is elliptical or oval, and is arranged so that a major axis is along the body length direction.   The swimsuit according to any one of claims 1 to 4, wherein the independent recess patterns are regularly arranged. The swimsuit according to claim 1, wherein the recess stripe portion and the independent recess pattern are embossed patterns . One area of the independent recess pattern is 0.05 to 5 mm. ² The swimsuit according to claim 1. The swimsuit according to any one of claims 1 to 7, wherein the stripe pattern and the independent concave pattern in the convex stripe part are formed on the entire surface of the swimsuit or in an area ratio of 50% or more. The swimsuit according to any one of claims 1 to 8, wherein the width of the concave stripe portion and the convex stripe portion is 3 to 15 mm. The swimsuit according to any one of claims 1 to 9, wherein the fabric of the swimsuit is a knitted fabric having stretch properties in both the vertical and horizontal directions by knitting a synthetic fiber multifilament yarn and spandex fiber. The swimsuit according to any one of claims 1 to 9, wherein the fabric of the swimsuit is a woven fabric using a composite yarn obtained by covering spandex fibers with a synthetic multifilament yarn for warp and weft. Dough before Symbol swimwear has stretch in longitudinal and transverse directions both JIS L1096 A method cut strip method (17.7N (1.8kg) load, 5 cm wide) elongation measured in is from 30 to 250% The swimsuit according to any one of claims 1 to 11. The swimsuit according to any one of claims 1 to 12, wherein the swimsuit is a swimsuit for swimming, and is produced in a pattern that is approximately 10% to 40% smaller than a human body.