JP2010070876A - Elastic warp-knitted fabric and sportswear formed by using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elastic warp-knitted fabric while sufficiently exhibiting a body-shape correcting effect, capable of exhibiting motion performance required for a sportswear, and the sportswear formed by using the same. <P>SOLUTION: This elastic warp-knitted fabric has a strip-shaped region (A) having a strong resistance to elongation in the fabric, and obtained by cross-knitting an elastic yarn and a non-elastic yarn, and at least one piece of the elastic yarn is knitted by two needle stitches. Between the region (A) and the region (B) which is the other than the region (A), each of the relationships of the resistance to the elongation follows a prescribed definition. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an elastic warp knitted fabric and sportswear using the same. In particular, the present invention relates to an elastic warp knitted fabric suitably used for sportswear such as fitness wear, active wear, leotards, and swimwear.

Until now, in order to improve the body shape such as the beautiful buttocks and the legs, it has been possible to increase the resistance to elongation (hereinafter sometimes simply referred to as “resistance”) in a desired region.
Specifically, for example, while using a stretch material that tightens tightly around the thigh and using a stretch material with a weak tightening force near the apex of the buttocks, tighten the thigh and tighten the thigh Many products that appeal hip-up effect and beautiful-butt effect have been commercialized.
As a method for increasing the resistance of a part of the knitted fabric, hitherto and application of elastic synthetic resin liquid have been known. There is a problem that a level difference occurs between the parts and a thickness is generated in the stitched part, and there is a problem of occurrence of stuffiness due to a decrease in air permeability when a synthetic resin liquid is used. Therefore, as an improved technique for solving this problem, increasing the resistance of a part of the region by changing the knitting structure has been studied (for example, see Patent Document 1).
Japanese Patent No. 3023354

By the way, the above-mentioned patent document 1 describes that the technique is intended to provide a body shape correction function or a muscle support function, and as a target clothing, girdle, shorts, body suit, swimsuit, leotard, brassiere , Spats and sports tights. That is, in the above-mentioned Patent Document 1, in addition to the body shape correction function, a muscle support function is provided as a function to reduce or prevent muscle fatigue and prevent the occurrence of muscle disorders and the like without disturbing the exercise ability of muscles. Function is also listed, and sportswear is listed as the target clothing.
In applications such as sportswear, it is necessary to exhibit sufficient exercise performance.

  Therefore, the problem to be solved by the present invention is required for sportswear while giving a sufficient difference in resistance between the strong resistance region that exhibits body shape correction effects such as beautiful hips and beautiful legs and the other regions. It is to provide an elastic warp knitted fabric capable of exhibiting such exercise performance and sportswear using the elastic warp knitted fabric.

The present inventor has intensively studied to solve the above problems.
In order to give a sufficient difference in resistance between the strong resistance region and the other regions, consider increasing the resistance by changing the number of yarn thicknesses in the strong resistance region. It was. However, in warp knitted fabrics, the warp direction is generally more stretchable than the warp direction. On the other hand, if the resistance is increased by the number of yarn thicknesses, only the warp direction resistance is It increases unilaterally. For this reason, it is difficult to impart stretch and balance to both the vertical and horizontal areas, both in areas with strong resistance and in other areas. As a result, the application of force to the wearer is distorted. It was found that it was difficult to obtain the exercise performance required for sportswear. That is, if there is a large difference in the resistance force in the vertical and horizontal directions, the direction of the force applied to the wearer will be shifted, making it difficult for the wearer to perform the same movement as when not wearing this clothing. .

  In order to avoid the above problem, the present inventor has further studied and found that a two-dimensional knitting may be adopted as the knitting structure of the elastic yarn. That is, the knitted fabric formed by the second stitch is less likely to have a large difference in the stretchability between the warp direction and the horizontal direction, and even when the resistance is increased by the number of knitting structures or the thickness of the yarn, the same course is used. Since the overlap is performed over two needles, two loops are superposed on one needle, and the horizontal expansion and contraction occurs following the expansion and contraction in the vertical direction. It has been found that the resistance force is unilaterally increased so that the wearer is prevented from being subjected to distortion, and does not hinder the exercise performance. That is, the present inventors have found that a person wearing this clothing can exert sufficient exercise performance without applying a biased force in either the vertical direction or the horizontal direction.

The present invention has been completed based on the above findings and confirmation thereof.
That is, the elastic warp knitted fabric according to the present invention is an elastic warp knitted fabric in which elastic yarns and inelastic yarns are knitted, and the warp knitted fabric has a band-like region (A) having a strong resistance to elongation. And at least one of the elastic yarns is knitted in a second stitch, and between the region (A) and the region (B) other than the region (A), The relationship is according to the following definition.
<Definition>
The stress in the vertical direction at 70% elongation in the third cycle when the elongation of 70% in the vertical direction and the recovery thereof are repeated for three cycles, measured for the test pieces in the areas (A) and (B) of the knitted fabric. When P1 is set and the horizontal direction stress at 70% extension in the third cycle when repeating the 70% extension and recovery in the horizontal direction for 3 cycles is P2,
The relationship between the vertical stresses P1 in both the regions (A) and (B) is as follows:
[P1 of area (A)] ÷ [P1 of area (B)] ≧ 1.5
And the relationship between the vertical direction stress P1 and the horizontal direction stress P2 in each of the regions (A) and (B),
0.5 ≦ P2 ÷ P1 ≦ 3.0
Be.

In the preferred form described above, the threading method of the elastic yarn in the region (A) is full threading, and the threading method of the elastic yarn in the region (B) is 1 in 1 out, or the region (A) The fineness of the elastic yarn in the region (B) is larger than the fineness of the elastic yarn in the region (B) and / or the number of elastic yarns in the region (A) is knitted in the region (B). More than the number.
Moreover, the sportswear for the lower body according to the present invention uses the elastic warp knitted fabric, and the region (A) wraps a region from the lower part of the buttock to the thigh. And

  The sportswear for the upper body according to the present invention uses the elastic warp knitted fabric, and the region (A) is adapted to follow the spine standing muscle at a portion corresponding to the spine standing muscle of the back of the body. It is characterized by.

  ADVANTAGE OF THE INVENTION According to this invention, the exercise | movement performance which respond | corresponds to the needs regarding a body shape correction effect, such as a beautiful buttocks and a beautiful leg, and is requested | required as original sportswear can be exhibited.

Hereinafter, the elastic warp knitted fabric and the sportswear using the elastic warp knitted fabric according to the present invention will be described in detail. However, the scope of the present invention is not limited to these descriptions, and other than the following examples, Changes can be made as appropriate without departing from the spirit of the invention.
[Elastic thread]
The elastic yarn used in the present invention is preferably a yarn composed of elastic fibers that inherently have rubber-like elasticity. As this elastic fiber, polyurethane elastic yarn, polyether / ester elastic yarn, polyamide elastic yarn, etc., or so-called rubber yarn made of natural rubber, synthetic rubber, semi-synthetic rubber, or other mainly composed of these Examples thereof include elastic yarns obtained by compounding or mixing with organic synthetic resins. Among these, polyurethane elastic yarn is preferable because it can exhibit excellent elastic characteristics even with fineness.

The elastic yarn may be in the form of either a monofilament or a multifilament. Further, the elastic yarn may be used as a raw yarn as it is, or may be used as a non-elastic yarn or a processed yarn covered with an elastic yarn.
The polyurethane elastic yarn that can be suitably used as the elastic yarn is an elastic yarn composed of polyurethane and / or polyurethane urea. This polyurethane or polyurethane urea is a polymer containing a urethane bond that is polymerized using a long-chain diol compound, a diisocyanate compound and a chain extender as the main raw material. Depending on the type of the long-chain diol compound that is a soft segment constituent, And polyester or polyether ester. Further, depending on whether a low molecular weight diol compound or a low molecular weight diamine compound is used as a chain extender, it is distinguished from polyurethane (narrow sense) or polyurethane urea. It is called polyurethane.

Polyurethane is a relatively short-chain segment obtained by reacting a soft segment (a) such as a long-chain polyether segment, a polyester segment or a polyetherester segment with an isocyanate and a diamine or diol as a chain extender. And a hard segment (b).
Polyether polyurethane uses a polyether diol compound such as polytetramethylene ether glycol or a copolymer thereof as a soft segment constituent, and uses a diisocyanate compound such as diphenylmethane-4,4-diisocyanate as a hard segment constituent, Furthermore, it is a polyurethane produced using a bifunctional hydrogen compound as a chain extender. Polyester polyurethane uses a polyester diol compound such as copolyester diol as a soft segment constituent, uses a diisocyanate compound such as diphenylmethane-4,4-diisocyanate as a hard segment constituent, and is further bifunctional as a chain extender. It is a polyurethane produced using a hydrogen compound. Further, polyether ester polyurethanes obtained by polymerizing polytetramethylene ether glycol and polybutylene terephthalate as a long-chain diol compound can also be used.

  Polyether segment which is a (co) polymer polymerized from tetramethylene glycol, 3-methyl-1,5-pentanediol, tetrahydrofuran, 3-methyltetrahydrofuran and the like as the soft segment (a) constituting the polyurethane; ethylene Polyester segments polymerized from diols such as glycol, tetramethylene glycol, 2,2-dimethyl-1,3-propanediol and dibasic acids such as adipic acid and succinic acid; poly- (pentane-1,5- It is preferable to use a polyetherester segment obtained from carbonate) diol, poly- (hexane-1,6-carbonate) diol or the like. Among them, from the viewpoint of reducing resistance during elongation and reducing resistance by guides, needles, etc., and preventing yarn breakage during knitting, a copolyether-based long-chain diol of tetrahydrofuran and 3-alkyltetrahydrofuran is used. More preferably. In particular, it is preferable to use a copolyether-based long-chain diol having a high degree of polymerization from the viewpoint of obtaining excellent stretch properties.

This polyurethane reacts with a long-chain diol compound, which is a hydroxyl-terminated soft segment precursor, and a molar excess of a diisocyanate compound (capping reaction) to form an initial polymerization intermediate (prepolymer). It can be produced by chain extension with a chain extender and / or a diol chain extender.
Examples of the diisocyanate compound used in this polyurethane production process include bis- (p-isocyanatophenyl) -methane (hereinafter abbreviated as MDI), tolylene diisocyanate (hereinafter abbreviated as TDI), and bis- (4-isocyanate). Cyclohexyl) -methane (hereinafter abbreviated as PICM), hexamethylene diisocyanate, 3,3,5-trimethyl-5-methylenecyclohexyl diisocyanate, and the like can be used, and MDI is particularly preferable.

The chain extender is preferably an amine chain extender. For example, diamines such as ethylenediamine, 1,3-cyclohexanediamine, and 1,4-cyclohexanediamine are used. In this case, a polyurethane urea having a urea bond in addition to the urethane bond is produced. As the amine chain extender, one kind of diamine compound may be used, or a plurality of kinds of diamine compounds may be used.
A chain terminator is preferably added to the reaction mixture to help control the final molecular weight in the polymerization process for polyurethane production. As the chain terminator, a monofunctional compound having active hydrogen, such as diethylamine, can be usually used.

  Moreover, as a chain extender, a diol compound can also be used in addition to the amine chain extender described above. For example, ethylene glycol, 1,3-propanediol, 4-butanediol, neopentyl glycol, 1,2-propylene glycol, 1,4-cyclohexanedimethanol, 1,4-cyclohexanediol, 1,4-bis (β -Hydroxyethoxy) benzene, bis (β-hydroxyethyl) terephthalate, paraxylylene diol, and the like can be used. As the diol chain extender, one kind of diol compound may be used, or a plurality of kinds of diol compounds may be used. Moreover, you may use together with the compound containing one hydroxyl group which reacts with an isocyanate group.

Various methods such as a melt polymerization method and a solution polymerization method can be adopted as the polymerization method for producing the polyurethane. In addition to the prepolymer method described above, a one-stage polymerization method in which polyurethane is synthesized by simultaneously reacting a long-chain diol, a diisocyanate compound, and a chain extender can be employed.
In the polyurethane production process by the solution polymerization method, N, N-dimethylacetamide (hereinafter abbreviated as DMAc), dimethylformamide, dimethyl sulfoxide, N-methylpyrrolidone, or the like can be used as a solvent. Of these, DMAc is most commonly used.

As a spinning method for producing a polyurethane elastic yarn from polyurethane, for example, in the case of a polyurethane elastic yarn using a diol compound as a chain extender, a melt spinning method, a dry spinning method or a wet spinning method can be employed. In the case of a polyurethane elastic yarn using a diamine compound as a chain extender, it is usually preferable to employ a dry spinning method.
When a polyurethane elastic yarn is produced from a polyurethane solution produced by polymerization by solution spinning such as dry spinning or wet spinning, the concentration of the polyurethane solution used for spinning is not particularly limited, but is usually 30 to 40% by weight ( (Based on the total weight of the solution), and in the case of the dry spinning method, 35 to 38% by weight is particularly preferable.

In the polyurethane spinning process, for the purpose of reducing friction between the yarn and the guide of the spinning machine, or preventing electrostatic charge, a part of the methyl group of dimethylsilicone, dimethylsilicone is replaced with another alkyl group, Oils such as silicone oils such as modified silicones substituted with phenyl groups and amino groups, and mineral oils are preferably applied to the yarn, but these oil agents may not be applied. The cross-sectional shape of the obtained elastic yarn may be circular or flat.
As the elastic yarn used in the present invention, in addition to the polyurethane elastic fiber, a composite fiber having stretch properties can be used. For example, a polyester composite fiber in which a layer mainly composed of polyethylene terephthalate and a layer mainly composed of polytrimethylene terephthalate are combined in a side-by-side type or an eccentric sheath / core type can be used.

This polyester-based composite fiber is a fiber in which different polymers having different intrinsic viscosities are bonded or eccentric composite, and stress is concentrated on the high-viscosity side during spinning and drawing, and the internal strain between the two layers is different. Become. Therefore, due to the difference in elastic recovery rate after stretching, and due to the difference in thermal shrinkage in the heat treatment process of the fabric, the high-viscosity side is greatly shrunk, and distortion occurs in the single fiber, so that a form of three-dimensional coil crimp is developed. The diameter of the three-dimensional coil crimp and the number of coils per unit fiber length are almost determined by the shrinkage difference (including the elastic recovery rate difference) between the high shrinkage component and the low shrinkage component, and the larger the shrinkage difference, the smaller the coil diameter. The number of coils per unit fiber length increases.
The coil crimp required as an elastic yarn has a small coil diameter, a large number of coils per unit fiber length (excellent stretchability and good appearance), and good coil sag resistance ( The amount of sag of the corresponding coil is small and the stretch retention is excellent. Since the expansion and contraction characteristics of the coil depend on the expansion and contraction 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 recoverability. From this viewpoint, it is preferable to use polyethylene terephthalate as the low shrinkage component and polytrimethylene terephthalate as the high shrinkage component. This is because polytrimethylene terephthalate is extremely superior in stretchability and stretch recovery than polyethylene terephthalate because of its polymer structure.

  The polyethylene terephthalate constituting one layer of this polyester-based composite fiber is a polymer having ethylene terephthalate units as main repeating units, that is, a polyester having terephthalic acid as a main acid component and ethylene glycol as a main glycol component. However, it may be a copolyester containing a copolymer component capable of forming another ester bond in a proportion of 20 mol% or less, preferably 10 mol% or less. Examples of the copolymerizable compound include sulfonic acid, sodium sulfonic acid, sulfuric acid, sulfuric ester, diethyl sulfate, ethyl sulfate, aliphatic sulfonic acid, ethane sulfonic acid, chlorobenzene sulfonic acid, alicyclic sulfonic acid, isophthalic acid, sebacine Acid, azelaic acid, dimer acid, adipic acid, oxalic acid, decanedicarboxylic acid and other dicarboxylic acids, p-hydroxybenzoic acid, ε-caprolactone and other hydroxycarboxylic acids such as dicarboxylic acids, triethylene glycol, polyethylene glycol, propanediol Diols such as butanediol, pentanediol, hydroquinone, and bisphenol A. If necessary, titanium dioxide as a matting agent, fine particles of silica or alumina as a lubricant, hindered phenol derivatives as an antioxidant, and coloring pigments may be added.

  The polytrimethylene terephthalate constituting the other layer of the polyester-based composite fiber is a polymer having trimethylene terephthalate units as main repeating units, that is, terephthalic acid as a main acid component, and 1,3-propanediol. Is a polyester having a main glycol component. However, it may be a copolyester containing a copolymer component capable of forming another ester bond in a proportion of 20 mol% or less, preferably 10 mol% or less. As copolymerizable compounds, for example, dicarboxylic acids such as isophthalic acid, succinic acid, cyclohexanedicarboxylic acid, adipic acid, dimer acid, sebacic acid, 5-sodium sulfoisophthalic acid, ethylene glycol, diethylene glycol, butanediol, neopentyl glycol Diols such as cyclohexanedimethanol, polyethylene glycol and polypropylene glycol are preferably used. If necessary, titanium dioxide as a matting agent, fine particles of silica or alumina as a lubricant, hindered phenol derivatives as an antioxidant, and coloring pigments may be added.

From the viewpoint of increasing the expression of coiled crimps in the polyester-based composite fiber and the stretchability of the knitted fabric to a desired level, the intrinsic viscosity of polytrimethylene terephthalate is preferably 1.0 or more. .2 or more is more preferable.
The composite structure of the polyester-based composite fiber is a side-by-side type or an eccentric sheath / core type, and the cross-sectional shape of the single yarn may be a substantially circular shape or may be an oval shape with a constricted center. By taking these composite structures, coiled crimps can be expressed by applying heat to the yarn, and the yarn can be given stretchability.
In addition, the weight ratio of the polyethylene terephthalate layer to the polytrimethylene terephthalate layer in the polyester-based composite fiber is in the range of 30/70 or more and 70/30 or less from the viewpoint of yarn production and dimensional uniformity of the coil in the fiber length direction. Preferably there is.

The elastic yarn using the polyurethane elastic yarn described above preferably has a yarn fineness of 22 to 78 dtex.
[Non-elastic yarn]
Next, the inelastic yarn used in the present invention will be described.
The inelastic yarn used in the elastic warp knitted fabric of the present invention is a yarn that does not substantially have stretchability, and may be either a filament yarn or a spun yarn.
Specifically, as filament yarn, rayon, acetate, polyamide, polyester, acrylic, polypropylene, vinyl chloride or the like, or silk (raw yarn) is preferably used. The mode may be any of a raw yarn, a temporary twisted yarn or a pre-dyed yarn, or a composite yarn thereof. These filament yarns are all preferably stable yarns that are easy to twist.

As the spun yarn, spun yarn made of one kind of staple fibers made of natural fibers such as cotton, wool, hemp, silk, rayon, polyamide, polyester, acrylonitrile, polypropylene, vinyl chloride or the like, or staple fibers thereof. Is a spun yarn in which is blended.
When the inelastic yarn is a filament yarn, the yarn fineness is preferably in the range of 7 to 84 dtex, and more preferably in the range of 22 to 56 dtex. Further, when the inelastic yarn is a spun yarn, the yarn fineness is preferably in the range of 30 to 100 and more preferably in the range of 40 to 60.

[Elastic warp knitted fabric]
The elastic warp knitted fabric of the present invention is a warp knitted fabric knitted from an elastic yarn and an inelastic yarn. In this warp knitted fabric, the inelastic yarn may be one type or a plurality of types of knitting. Similarly, the elastic yarn may be one type or a plurality of types of knitting.
At least one of the elastic yarns is knitted in a second stitch. As the second stitch, either an open eye or a closed eye may be adopted, or it may be deformed into an atlas shape. By knitting elastic yarn with two stitches, it is easy to make a thin fabric with strong resistance.
As the stretch characteristics of the elastic warp knitted fabric, the relationship of the resistance to each elongation is predetermined between the region (A) and the region (B) other than the region (A).

The stress in the vertical direction at 70% elongation in the third cycle when the elongation of 70% in the vertical direction and the recovery thereof are repeated for three cycles, measured for the test pieces in the areas (A) and (B) of the knitted fabric. When P1 is set and the horizontal direction stress at 70% extension in the third cycle when repeating the 70% extension and recovery in the horizontal direction for 3 cycles is P2,
The relationship between the vertical stresses P1 in both the regions (A) and (B) is as follows:
[P1 of area (A)] ÷ [P1 of area (B)] ≧ 1.5
It is necessary to be.
The above formula shows that the difference in resistance between the elastic band-shaped region (A) having a high resistance and the other region (B) having a relatively low resistance is 1.5 times or more larger. When using elastic warp knitted fabric as sportswear, it is easy to apply sharpness where you want to tighten and weaken depending on the part of the body, for example, when used for lower body sportswear described below, The thigh is thin without breaking the roundness, and the body shape correction effect can be enhanced.

Further, the relationship between the vertical direction stress P1 and the horizontal direction stress P2 in each of the regions (A) and (B) is as follows.
0.5 ≦ P2 ÷ P1 ≦ 3.0
It is necessary to satisfy this relationship.
When P2 ÷ P1 is less than 0.5, the elastic warp knitted fabric has a resistance in the warp direction that is too small compared to the warp in the warp direction. When the ground is used as sportswear, a non-uniform direction is likely to occur in the resistance, particularly in the periphery of the body joint where the range of expansion and contraction extends in multiple directions. On the other hand, when P2 ÷ P1 exceeds 3.0, the resistance in the warp direction of the elastic warp knitted fabric is too small compared to the recovery force in the horizontal direction, and the resistance of the fabric becomes anisotropy. As in the case where ÷ P1 is less than 0.5, a non-uniform direction tends to occur in the resistance force.

In addition, the specific measurement method of said P1 and P2 in this invention employ | adopts the method later mentioned in an Example.
As a method for forming a region having a strong resistance force in the wale direction of the elastic warp knitted fabric in a band shape, the threading method of the elastic yarn in the region (A) is set to the whole, and the threading of the elastic yarn in the region (B) is performed. A method in which the method is 1 in 1 out is mentioned.
Moreover, the method of making the fineness of the elastic yarn in the said area | region (A) larger than the fineness of the elastic thread in the said area | region (B) is mentioned. The fineness of the elastic yarn at this time is not particularly limited. For example, the fineness of the elastic yarn in the region (B) is set to the normal fineness of 22 to 78 dtex of the elastic yarn described above, and the elasticity in the region (A) is set. The fineness of the yarn can be made twice or more larger than the fineness of the elastic yarn in the region (B).

Furthermore, there is a method in which the number of elastic yarns knitted in the region (A) is made larger than the number of elastic yarns knitted in the region (B). The number of elastic yarns knitted at this time is not particularly limited. For example, the number of elastic yarns knitted in the region (A) can be more than doubled than the number of elastic yarns knitted in the region (B).
In the elastic warp knitted fabric according to the present invention, for example, as shown in FIG. 1, a region (A) having a strong resistance is formed in a band shape in a warp knitted fabric 10. Region (B) is a region other than region (A). The direction indicated by the arrow is the knitting direction.
For example, the resistance force may be switched at every constant wale by using the above-described resistance force switching means such as one-in-one and all-out change, number change, or thickness change.

As shown in FIG. 1B, two or more bands of the region (A) may be provided on one warp knitted fabric 10, and the thickness of the band is not particularly limited.
[Use]
The elastic warp knitted fabric according to the present invention as described above can be suitably used for clothing that requires a body shape correction function and excellent exercise performance, particularly sportswear such as fitness wear, active wear, yoga wear, leotard, and swimwear.
When the elastic warp knitted fabric according to the present invention is applied to clothing, the elastic warp knitted fabric as shown in FIG. 1 can be cut into a desired shape and used.

<Sportswear for lower body>
The elastic warp knitted fabric according to the present invention can be used, for example, for sportswear for lower body.
FIG. 2 shows an embodiment of sportswear for lower body, FIG. 2 (a) is a front view, and FIG. 2 (b) is a rear view.
The lower body sportswear 20 shown in FIG. 2 is provided with a region (A ₁ ) as a region (A) having a strong resistance so as to wrap a region from the lower buttocks of the body to the thigh. By this region (A ₁ ), the effect of tightening the thigh can be obtained, and a so-called hip-up effect can be obtained for the buttocks above the thigh and preventing the drooping of the buttocks.

In FIG. 2, an inverted triangular area (A ₂ ) provided in the abdomen is further provided as the area (A). By providing this region (A ₂ ), the effect of suppressing the bulging of the abdomen is also exhibited.
The area (A ₁ ) shown in FIG. 2 is formed by one thick band, but a plurality of thin bands may be provided at intervals, and the area (A ₁ ) may be formed as a whole. The same applies to the region (A ₂ ). Furthermore, since the following areas (A ₃ ) to (A ₇ ) are the same, the description thereof is omitted below.
Moreover, FIG. 3 is another embodiment of the sportswear 20 for lower body, FIG. 3 (a) is a front view, FIG.3 (b) is a rear view.

In the lower-body sportswear 20 shown in FIG. 3, the region (A ₃ ) is provided in a band shape from the abdomen to the back thigh as the region (A) having strong resistance. A hip-up effect is obtained on the back as in FIG. 2, and an effect of suppressing the bulging of the abdomen is exhibited on the front.
Since the above-described sportswear 20 for the lower body is manufactured using the elastic warp knitted fabric according to the present invention, the resistance is greatly increased in the vertical direction and the horizontal direction regardless of the region (A) or the region (B). Although the force does not change and it has the above-mentioned body shape correction function, it is difficult to generate a non-uniform direction of resistance force even in the body part where the stretch range around the hip joint and the stretch direction are multi-directional. Is not impaired.

<Sportwear for upper body>
The elastic warp knitted fabric according to the present invention can be used, for example, for upper-body sportswear.
FIG. 4 shows an embodiment of sportswear 30 for the upper body, FIG. 4 (a) is a front view, and FIG. 4 (b) is a rear view.
The upper body sportswear 30 shown in FIG. 4 is provided with a region (A ₄ ) as a region (A) so as to be along the spine standing muscle at a portion corresponding to the spine standing muscle on the back of the body. This region (A ₄ ) provides an effect of maintaining a beautiful posture by applying a force to tighten the back and extending the spine erect muscle.

Moreover, FIG. 5 is another embodiment of the upper body sportswear 30, FIG. 5 (a) is a front view, and FIG. 5 (b) is a rear view.
The sportswear 30 for the upper body shown in FIG. 5 is provided with a belt-like region (A ₅ ) including left and right forearms at the back as the region (A). Thereby, for example, the tensile force works so that the shoulder of the wearer does not bend forward, and the correct posture in which the spinal column standing muscle is extended can be maintained.
Furthermore, FIG. 6 is another embodiment of the upper-body sportswear 30, FIG. 6 (a) is a front view, and FIG. 6 (b) is a rear view.

The sportswear 30 for the upper body shown in FIG. 6 is provided with a belt-like region (A ₆ ) on the back as the region (A) as in FIG. On the other hand, tensile force does not work. However, when the spine standing muscle is bent, the region (A ₆ ) having strong resistance is in a tight state, so that the wearer can be aware of the bent posture of the spine standing muscle. There is an action to promote posture correction. Further, in FIG. 6, the area of the strip in the abdomen (A ₇₎ is provided. By this region (A ₇ ), it is possible to suppress swelling of the abdomen and to prevent the chest from sagging.
Since the above-described sportswear 30 for the upper body is manufactured using the elastic warp knitted fabric according to the present invention, it is highly resistant in the vertical direction and the horizontal direction regardless of the region (A) or the region (B). The force does not differ, and the above-mentioned body shape correction function is provided, but even in the body part where the stretch range and the stretch direction are multi-directional, it is difficult for the resistance force to be unevenly distributed, and the exercise performance is not impaired. Is. In particular, the spine upright muscles are stretched and the chest is held in the correct posture, thereby expanding the rib cage and promoting breathing, increasing metabolism and improving exercise performance.

Hereinafter, the present invention will be described more specifically with reference to Examples and Comparative Examples, but the present invention is not limited to these.
[Example 1]
In the elastic warp knitted fabric according to the example 1, the elastic yarn threading method in the region (A) is all through, and the elastic yarn threading method in the region (B) is 1 in 1 out.
The elastic warp knitted fabric according to Example 1 was manufactured by using the following knitting and knitting structure using a tricot knitting machine type HKS4EL28 gauge machine manufactured by KARL MAYER.
<Thread use>
Front heel: non-elastic yarn (polyamide fiber) nylon processed yarn 78dtex (manufactured by Toray Industries, Inc.)
Middle cocoon: polyurethane elastic yarn 50 dtex (“Lycra (registered trademark)” type 906C manufactured by Operontex Co., Ltd.),
Back heel: The same thread as the middle heel was used.

As the threading method, the front hook: full thread, middle hook: 1 in 1 out, back hook: 1 in 1 out.
At this time, regarding the elastic yarn threaded through the middle heel and the back heel, only the elastic yarn of the back heel is knitted in the region (B), and in the region (A), in addition to the elastic yarn of the back heel, The elastic yarn was also knitted together. As a result, in the region (B), only the elastic yarn threaded through the back heel 1 in 1 out is knitted, and in the region (A), the yarn threaded through 1 in 1 out each of the middle heel and the back heel. Together, all the elastic yarn was knitted.

<Organization>
Front 筬: 2-3 / 1-0,
Middle bag: 2-0 / 1-3,
Back bag: 2-0 / 1-3
FIG. 7A shows a knitting structure diagram of the non-elastic yarn 11 threaded through the front heel, and FIG. 7 shows a knitting structure diagram of the elastic yarn 12 threaded through the middle heel and the elastic yarn 13 threaded through the back heel. Shown in (b). FIG. 8 shows a knitting structure diagram showing the relationship between the region (A) and the region (B) and the elastic yarn 12 and the elastic yarn 13. In FIG. 8, the elastic yarn 13 is represented by a solid line, and the elastic yarn 12 is represented by a broken line.

The green machine obtained with the above thread use and knitting structure was finished by a predetermined dyeing process to obtain an elastic warp knitted fabric according to Example 1.
[Example 2]
In the elastic warp knitted fabric according to Example 2, the fineness of the elastic yarn in the region (A) is larger than the fineness of the elastic yarn in the region (B).
The elastic warp knitted fabric according to Example 2 was manufactured by using the tricot knitting machine type HKS4EL28 gauge machine manufactured by KARL MAYER, with the following thread use and knitting structure.
<Thread use>
Front heel: non-elastic yarn (polyamide fiber) nylon processed yarn 78dtex (manufactured by Toray Industries, Inc.)
Middle cocoon: polyurethane elastic yarn 33 dtex ("Lycra (registered trademark)" type 906C manufactured by Operontex Co., Ltd.),
Back heel: Polyurethane elastic yarn 100 dtex (“Lycra (registered trademark)” type 906C manufactured by Operontex Co., Ltd.) was used.

As the threading method, front thread: all thread, middle thread: all thread, back thread: all thread.
At this time, regarding the elastic yarn threaded through the middle heel and the back heel, only the elastic yarn of the back heel is knitted in the region (A), and only the elastic yarn of the middle heel is knitted in the region (B). did. Thereby, the region (A) using the thick elastic yarn was made stronger than the region (B).
<Organization>
Front 筬: 1-0 / 2-3,
Middle bag: 1-3 / 2-0,
Back bag: 1-3 / 2-0
FIG. 7A shows a knitting structure diagram of the non-elastic yarn 11 threaded through the front heel, and FIG. 7 shows a knitting structure diagram of the elastic yarn 12 threaded through the middle heel and the elastic yarn 13 threaded through the back heel. Since it is the same as the knitting organization chart shown in FIG. Further, FIG. 9 shows a knitting structure diagram showing the relationship between the region (A) and the region (B) and the elastic yarn 12 and the elastic yarn 13. In FIG. 9, the elastic yarn 13 is represented by a thicker line than the elastic yarn 12.

The green machine obtained with the above thread use and knitting structure was finished by a predetermined dyeing process to obtain an elastic warp knitted fabric according to Example 2.
Example 3
In the elastic warp knitted fabric according to Example 3, the number of elastic yarns in the region (A) is larger than the number of elastic yarns in the region (B).
The elastic warp knitted fabric according to Example 3 was manufactured by using the tricot knitting machine type HKS4EL28 gauge machine manufactured by KARL MAYER and using the following yarns and knitting structure.
<Thread use>
Front heel: non-elastic yarn (polyamide fiber) nylon processed yarn 78dtex (manufactured by Toray Industries, Inc.)
Middle cocoon: polyurethane elastic yarn 33 dtex ("Lycra (registered trademark)" type 906C manufactured by Operontex Co., Ltd.),
Back heel: The same thread as the middle heel was used.

As the threading method, front thread: all thread, middle thread: all thread, back thread: all thread.
At this time, regarding the elastic yarn threaded through the middle heel and the back heel, only the elastic yarn of the back heel is knitted in the region (B), and the elastic yarn of the middle heel is also knitted in the region (A). did. As a result, one elastic yarn is used in the region (B), and two elastic yarns are used in the region (A). The region (A) having a larger number of elastic yarns has a higher resistance. It is getting stronger.
<Organization>
Front 筬: 1-0 / 2-3,
Middle bag: 1-3 / 2-0,
Back bag: 1-3 / 2-0
FIG. 7A shows a knitting structure diagram of the non-elastic yarn 11 threaded through the front heel, and FIG. 7 shows a knitting structure diagram of the elastic yarn 12 threaded through the middle heel and the elastic yarn 13 threaded through the back heel. Since it is the same as the knitting organization chart shown in FIG. FIG. 10 shows a knitting structure diagram showing the relationship between the region (A) and the region (B) and the elastic yarn 12 and the elastic yarn 13. In FIG. 10, the elastic yarn 13 is represented by a solid line, and the elastic yarn 12 is represented by a broken line.

The green machine obtained with the above thread use and knitting structure was finished by a predetermined dyeing process to obtain an elastic warp knitted fabric according to Example 3.
[Comparative Example 1]
The elastic warp knitted fabric according to Comparative Example 1 is a conventionally known elastic warp knitted fabric in which the elastic yarn is not a double stitch.
An elastic warp knitted fabric was manufactured by using the following yarn using a tricot knitting machine type HKS4EL28 gauge machine manufactured by KARL MAYER.
<Thread use>
Front heel: non-elastic yarn (polyamide fiber) nylon processed yarn 78dtex (manufactured by Toray Industries, Inc.)
Middle cocoon: polyurethane elastic yarn 50 dtex (“Lycra (registered trademark)” type 906C manufactured by Operontex Co., Ltd.),
Back heel: The same thread as the middle heel was used.

As the threading method, front thread: all thread, middle thread: all thread, back thread: all thread.
At this time, regarding the elastic yarn threaded through the middle heel and the back heel, only the elastic yarn of the back heel is knitted in the region (B ′) corresponding to the region (B) in the present invention. In the region (A ′) corresponding to A), the elastic yarn of the middle heel is knitted together with the elastic yarn of the back heel. As a result, the elastic yarn threaded through the middle rod is inserted into the region (A ′), so that the region (A ′) has a stronger resistance than the region (B ′).

<Organization>
Front 筬: 1-0 / 2-3,
Middle pass: 3-3 / 0-0,
Back bag: 1-2 / 1-0
FIG. 11 (a) shows a knitting structure diagram of the non-elastic yarn 11 threaded through the front heel, FIG. 11 (b) shows a knitting structure diagram of the elastic yarn 12 threaded through the middle heel, and threading the back heel. A knitting structure diagram of the elastic yarn 13 is shown in FIG. Further, FIG. 12 shows a knitting structure diagram showing the relationship between the region (A ′) and the region (B ′), the elastic yarn 12 and the elastic yarn 13.

The green machine obtained with the above thread use and knitting structure was finished by a predetermined dyeing process to obtain an elastic warp knitted fabric according to Comparative Example 1.
〔Evaluation test〕
For each elastic warp knitted fabric according to Examples 1 and 2 and Comparative Example 1, P1 and P2 were measured by the following method.
<P1>
P1 is the stress in the warp direction at the time of 70% stretch in the third cycle when the stretch of 70% in the warp direction of the knitted fabric and its recovery are repeated three cycles.

As a measuring apparatus, an Instron tensile tester type 5500 was used.
A test piece having a width of 3 inches (76.2 mm) × a length of 12 inches (304.8 mm) is set so that the warp knitting direction (the wale direction) of the warp knitted fabric is the length direction of the test piece. 25.4 mm), a ring-shaped test piece having a circumference of 10 inches (254 mm) was obtained. The specimen was attached to the upper fixed clamp and the lower moving clamp with the length direction of the specimen facing up and down. The gripping interval was set to 5 inches (127 mm).
A tensile force was applied to the test piece, and it was stretched to a vertical elongation of 70% at a speed of 10 inches (254 mm) / min, and thereafter, the operation of removing the tensile force at the same speed was performed for 3 cycles. During the test, the stress generated on the specimen was automatically measured and recorded.

Note that the above-mentioned vertical elongation of 70% means (de) / e × from the length (grip interval) e of the test piece before extension and the length d in the extension direction of the test piece in the extended state. It means that the value obtained by 100 is 70%.
The stress at 70% elongation in the third cycle when the above operation was repeated three times was read, and the value was defined as P1 (vertical stress at 70% elongation, unit: cN).
<P2>
P2 is the transverse stress at the time of 70% elongation in the third cycle when the elongation of the knitted fabric in the transverse direction 70% and the recovery thereof are repeated three cycles.

In the calculation method of P1, the warp knitted fabric warp direction (the wale direction) is not set to the length direction of the test piece, but the warp knitted fabric side direction (the course direction) is the length direction of the test piece. Except for the above, P2 (lateral stress at 70% elongation, unit: cN) was calculated by the same method.
P1, P2 of each of the region (A), the region (A ′), the region (B), and the region (B ′) in each elastic warp knitted fabric according to Examples 1 to 3 and Comparative Example 1 measured by the above method. And P2 ÷ P1 for each region calculated from this value, P1 of region (A) in Examples 1 to 3 ÷ P1 of region (B), and region (A ′) in Comparative Example 1 Table 1 shows the value of P1 ÷ P1 in the region (B ′).

As can be seen from Table 1 above, Examples 1 to 3 all satisfy the conditions defined in the present invention. Comparative Example 1 does not satisfy the above conditions.
[Manufacture and evaluation of sportswear]
Each elastic warp knitted fabric according to Examples 1 to 3 and Comparative Example 1 was cut to manufacture sportswear 20 for the lower body shown in FIG.
When each sportswear obtained from each elastic warp knitted fabric according to Examples 1 to 3 is actually worn, it is extremely excellent in the body shape correction function, and also does not have a region having a strong resistance. Was able to demonstrate the same exercise performance.

  On the other hand, when the sportswear obtained from the elastic warp knitted fabric according to Comparative Example 1 was actually worn, both the region (A ′) and the region (B ′) had a difference in resistance in the vertical direction and the horizontal direction. The sports performance similar to that of sportswear could not be demonstrated.

  The elastic warp knitted fabric according to the present invention can be suitably used as sportswear such as fitness wear, active wear, yoga wear, leotard, and swimwear.

1 is a schematic overall view showing an embodiment of an elastic warp knitted fabric according to the present invention. It is the front view and back view which show one Embodiment of the sportswear for lower body concerning this invention. It is the front view and back view which show one Embodiment of the sportswear for lower body concerning this invention. It is the front view and back view which show one Embodiment of the sportswear for upper body concerning this invention. It is the front view and back view which show one Embodiment of the sportswear for upper body concerning this invention. It is the front view and back view which show one Embodiment of the sportswear for upper body concerning this invention. 1 is a knitting structure diagram of each knitting yarn of an elastic warp knitted fabric according to Example 1. FIG. 1 is a knitting structure diagram showing only elastic yarns of an elastic warp knitted fabric according to Example 1. FIG. 3 is a knitting structure diagram showing only elastic yarns of an elastic warp knitted fabric according to Example 2. FIG. FIG. 6 is a knitting structure diagram showing only elastic yarns of an elastic warp knitted fabric according to Example 3. 3 is a knitting structure diagram of each knitting yarn of an elastic warp knitted fabric according to Comparative Example 1. FIG. 3 is a knitting structure diagram showing only elastic yarns of an elastic warp knitted fabric according to Comparative Example 1. FIG.

Explanation of symbols

A (A _{1 to} A ₇ ) Strongly resistant region B Region other than region (A) 10 Elastic warp knitted fabric 20 Lower body sportswear 30 Upper body sportswear 11 Inelastic yarn (front heel)
12 Elastic thread (middle thread)
13 Elastic thread (back bag)

Claims (6)

An elastic warp knitted fabric in which an elastic yarn and an inelastic yarn are knitted, and the warp knitted fabric has a region (A) having a strong resistance to elongation, and at least one of the elastic yarns. Are knitted in a second stitch, and between the region (A) and the region (B) other than the region (A), the relationship of resistance to each elongation is in accordance with the following definition: An elastic warp knitted fabric characterized by that.
<Definition>
The stress in the vertical direction at 70% elongation in the third cycle when the elongation of 70% in the vertical direction and the recovery thereof are repeated for three cycles, measured for the test pieces in the areas (A) and (B) of the knitted fabric. When P1 is set and the horizontal direction stress at 70% extension in the third cycle when repeating the 70% extension and recovery in the horizontal direction for 3 cycles is P2,
The relationship between the vertical stresses P1 in both the regions (A) and (B) is as follows:
[P1 of area (A)] ÷ [P1 of area (B)] ≧ 1.5
And the relationship between the vertical direction stress P1 and the horizontal direction stress P2 in each of the regions (A) and (B),
0.5 ≦ P2 ÷ P1 ≦ 3.0
Be.   The elastic warp knitted fabric according to claim 1, wherein the threading method of the elastic yarn in the region (A) is full threading, and the threading method of the elastic yarn in the region (B) is 1 in 1 out.   The elastic warp knitted fabric according to claim 1 or 2, wherein the fineness of the elastic yarn in the region (A) is larger than the fineness of the elastic yarn in the region (B).   The elastic warp knitted fabric according to any one of claims 1 to 3, wherein the number of elastic yarns knitted in the region (A) is larger than the number of elastic yarns knitted in the region (B).   A sportswear for the lower body, comprising the elastic warp knitted fabric according to any one of claims 1 to 4, wherein the region (A) wraps a region from the lower part of the buttock to the thigh. .   The elastic warp knitted fabric according to any one of claims 1 to 4 is used, and the region (A) extends along the spine standing muscle in a portion corresponding to the spine standing muscle on the back of the body. Upper body sportswear.

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