Woven fabric for clothing

Abstract

The present invention provides a tricot fabric for clothing, which has stretchability and tension feeling suitable for sportswear or work clothes, and excellent wash durability. The present invention relates to a tricot fabric for clothing, characterized by being a tricot fabric in which a back yarn and a front yarn are polyester fibers, and a middle yarn is formed of polyester fibers using two or more kinds of polymers as constituent components to form a plating stitch, and satisfying all of the following (1) to (3): (1) an elongation in the weft direction measured using the JIS L1096 elongation B method (load 14.7 N) is 30 to 90%, (2) the weight per unit area is 160 to 265 g / m 2 , and (3) the bending stiffness in the weft direction (B value) is 0.020 to 0.100 gf.cm 2 / cm.

Description

Technical Field

[0001] The present invention relates to a warp-knitted fabric for clothing that has excellent moderate stretchability and washing durability, and is particularly suitable for use in sportswear and work clothing. Background Art

[0002] In addition to sportswear, for various work clothing materials, knitted fabrics with high stretchability are required to follow the stretching of the skin during wearing movements, and in particular, knitted fabrics that have a firm texture and are easy to maintain the shape of the garment are required.

[0003] Conventionally, in order to obtain high stretchability and stretch back properties (the property of easily springing back and recovering even when wrinkles are formed), various studies have been conducted on elastic knitted fabrics obtained by combining polyurethane-based elastic fibers called spandex with nylon fibers, polyester fibers, cotton yarns and the like.

[0004] For example, among blended knitted fabrics of polyurethane fibers and polyester fibers, a blended knitted fabric of polyurethane fibers and polyester fibers having the following features is known (Patent Document 1): the polyester fiber is composed of non-bulked fibers having an initial modulus at 30°C of 55 g / d or more, a peak temperature (Tmax) of mechanical loss tangent (tanδ) at a measurement frequency of 110 Hz of 105°C or less, and a tanδ peak ((tanδ)max) having a value greater than 0.135, and / or bulked fibers having an initial modulus at 30°C of 55 g / d or more and satisfying (tanδ)max ≥ (Tmax-105)×10 -2 between Tmax (°C) and (tanδ)max, and (tanδ)max having a value of 0.08 or more, and the knitted fabric can be dyed with disperse dyes at atmospheric pressure.

[0005] However, although polyurethane-based elastic fibers have high stretchability, when the polyurethane-based elastic fibers are blended, there is a problem that the knitted fabric is prone to deterioration due to time-dependent degradation such as photochemical yellowing and hydrolysis of polyurethane. Therefore, it is not suitable for use in sportswear and work clothing that are frequently washed.

[0006] Furthermore, when polyurethane-based elastic fibers are blended into polyester fibers, since polyurethane-based elastic fibers are difficult to be dyed with disperse dyes for polyester, there are problems of washing liquid contamination and reduction of wet rubbing fastness of the knitted fabric. As a result, strengthening of reduction cleaning is forced, which complicates the dyeing process. In addition, polyurethane-based elastic fibers are expensive, which also becomes a factor for increasing product cost.

[0007] As a method to solve the problems described above, for example, a polyester composite fiber with the following characteristics has been proposed (Patent Document 2): In a composite fiber in which two polyesters are arranged side by side or eccentrically along the entire length of the fiber, one polyester is a polyester (A) with a polyethylene naphthalate unit as the main body, and the other polyester is a polyether ester type block copolymer (B) containing a hard segment of polybutylene terephthalate as the main body and a soft segment of polyether as the main body. The fiber has a potential crimping ability of more than 35 crimps per inch in heat treatment at 160°C and a crimp retention rate of more than 25%.

[0008] Additionally, for example, there are known warp-knitted fabrics (Patent Document 3) that are formed by interlacing polyester composite fibers with other fibers and by inserting and weaving the polyester composite fibers, wherein the polyester composite fibers are side-by-side or sheath-core type polyester composite fibers in which one of the constituent components is polyethylene terephthalate as the main component and the other is propylene terephthalate as the main component.

[0009] These knitted fabrics, because they do not use polyurethane-based elastic fibers, offer cost-effective stretchability, yet there is room for further improvement. Specifically, improvements in wash durability and antistatic properties required for use in sportswear or workwear are not addressed. Workwear, in particular, requires moderate stretch to accommodate skin movement during wear, as well as a good tensile strength (a fabric with sufficient tension) and antistatic properties to prevent static buildup. Furthermore, due to the high frequency of washing, excellent wash durability (especially shape retention and antistatic durability) is required. However, no knitted fabric has yet been proposed that adequately meets these properties.

[0010] Existing technical documents

[0011] Patent documents

[0012] Patent Document 1: Japanese Patent Publication (Japanese Patent Publication No. 01-040137)

[0013] Patent Document 2: Japanese Application Publication (Japanese Patent Application Publication No. 06-101116)

[0014] Patent Document 3: Japanese Application Publication (Japanese Patent Application Publication No. 2004-44069) Summary of the Invention

[0015] The problem that the invention aims to solve

[0016] The main objective of this invention is to provide a warp-knitted fabric for clothing that has elasticity and tension suitable for sportswear or work clothes, and excellent wash durability.

[0017] The inventors have discovered that by appropriately selecting the type of yarn and the knitting structure, warp-knitted fabrics that meet the characteristic values ​​specified in this invention can achieve the above-mentioned objectives, thus completing this invention.

[0018] That is, the present invention relates to warp-knitted fabrics for clothing.

[0019] 1. A warp-knitted fabric for clothing, characterized in that it is a warp-knitted fabric formed by using polyester fibers as back yarn and front yarn and using composite fibers formed from two or more polyester polymers as center yarn to form an interlaced knitting structure, and satisfies all of the following conditions (1) to (3):

[0020] (1) The elongation in the weft direction, as measured by the Japanese Industrial Standard JIS L1096 Elongation Method B (load 14.7N), is 30-90%.

[0021] (2) Weight per unit area is 160-265 g / m² 2 ;as well as

[0022] (3) The bending stiffness (B value) in the latitudinal direction is 0.020~0.100gf.cm. 2 / cm.

[0023] 2. The warp-knitted fabric for clothing described in item 1 also satisfies the following condition (4):

[0024] (4) The shrinkage rate in both the warp and weft directions after 10 cleanings using the Japanese Industrial Standard JIS L1096 F-2 method (medium temperature cleaning method; 60℃×30 minutes) is less than 3%.

[0025] 3. The warp-knitted fabric for clothing as described in item 1, wherein a composite fiber formed from two or more polyester polymers and a conductive fiber are used as the center yarn.

[0026] 4. The warp-knitted fabric for clothing as described in item 3, wherein the middle yarn comprises a composite fiber (A) formed from two or more polyester polymers, and a twisted yarn (B1) of the composite fiber (A) formed from two or more polyester polymers and a conductive fiber.

[0027] 5. A fabric comprising a warp-knitted fabric for clothing as described in any one of items 1 to 4.

[0028] 6. The fabric described in item 5, wherein the fabric is sportswear.

[0029] 7. The fabric described in item 5, wherein the fabric is work clothes.

[0030] Invention Effects

[0031] According to the present invention, warp-knitted fabrics for clothing can be provided that have elasticity and tension suitable for sportswear or work clothes, and excellent wash durability.

[0032] The warp-knitted fabrics of the present invention, possessing these characteristics, can be widely used in various types of clothing. In particular, they are suitable for use in sportswear or work clothes (work clothes). Attached Figure Description

[0033] Figure 1 This is a diagram illustrating an example of the fiber cross-section of the composite fiber used in the warp-knitted fabric of the present invention.

[0034] Figure 2 This is an example of a knitting pattern diagram showing one embodiment of the knitting structure of the back and front of the warp-knitted fabric of the present invention.

[0035] Figure 3 This is an example of a knitting pattern diagram showing one embodiment of the knitting structure of the back, front, and middle sections of the warp-knitted fabric of the present invention.

[0036] Figure 4 This is a knitting diagram showing the knitting structure of the back (L1), front (L3), and middle (L2) of the warp-knitted fabrics of Examples 1-3 and Comparative Examples 1-3.

[0037] Figure 5 This is a knitting diagram showing the knitting structure of the back (L1), front (L3), and middle (L2) of the warp-knitted fabric in Comparative Example 4. Detailed Implementation

[0038] The warp-knitted fabric for clothing of the present invention is a warp-knitted fabric formed by using polyester fibers as back yarn and front yarn and composite fibers formed from two or more polyester polymers as middle yarn to form an interlaced knitting structure.

[0039] First, the polyester fibers used as the back yarn and front yarn of the warp-knitted fabric constituting the present invention will be described. Specifically, examples of polyester resins forming the polyester fibers include polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polypropylene terephthalate (PTT), polyethylene naphthalate, and other polyalkylene terephthalate esters. Among these, PET is preferred from a versatility perspective. It should be noted that, without impairing the properties of the polyester resin, at least one of isophthalic acid, succinic acid, adipic acid, 1,3-propanediol, 1,4-butanediol, 1,6-hexanediol, bisphenol, etc., can be copolymerized.

[0040] For the polyester fibers used in the back yarn and front yarn, multifilament is preferred, especially multifilament that satisfies all of the following physical properties a) to e).

[0041] a) Single fiber fineness: 1.0~3.5dtex

[0042] b) Total fineness: 30–160 dtex

[0043] c) Strength: 2.0~5.5cN / dtex

[0044] d) Elongation: 15-50%

[0045] e) Hot water shrinkage rate: 1-5%

[0046] It should be noted that the strength and elongation are values ​​measured using the Japanese Industrial Standard JIS L1013 method. The hot water shrinkage rate is a value measured using the Japanese Industrial Standard JIS L1013 method, employing a hot water treatment method of 100°C for 30 minutes.

[0047] In this invention, polyester fibers are used as both the back yarn and the front yarn. Both can be polyester fibers with the same physical properties as described in a) to e), or polyester fibers with different physical properties can be used. As shown in the embodiments described later, polyester fibers with the same physical properties can be suitably used as both the back yarn and the front yarn.

[0048] Below, the composite fibers formed from polyester polymers (sometimes referred to as polyester fibers (A)) used as the yarns in the warp-knitted fabrics constituting the present invention can be, for example, composite fibers formed into concentric core-sheath type, eccentric core-sheath type, side-by-side type, multi-layer type, and other bonded shapes. In the present invention, from the viewpoint that stretchability can be more reliably imparted, eccentric core-sheath type or side-by-side type composite fibers are preferred.

[0049] In the composite fibers described above, the cross-sectional shape of the fibers is composed of various polyester polymers. For example, Figure 1 The cross-sections of the parallel composite fiber 11 and the eccentric core-sheath composite fiber 12 are schematically shown in the diagram. Figure 1 The parallel composite fiber 11 is composed of a first polymer region 11a and a second polymer region 11b that are adjacent to each other. Figure 1 In the eccentric core-sheath type composite fiber 12, it is configured such that the second polymer region 12b is surrounded by the first polymer region 12a. Figure 1 In this invention, each composite fiber is composed of two polymer regions, but it may also have three or more polymer regions. In this invention, the term "different polyester polymers" includes not only cases where the constituent components (monomers) are different, but also cases where the constituent components are the same but the viscosity, molecular weight, etc., are different.

[0050] As the polyester constituting the polymer region described above, at least PET is preferably used. For example, a) a combination of at least one of PBT and PTT with PET, or b) a combination of high-viscosity PET and low-viscosity PET may be used.

[0051] For these composite fibers, considering moderate stretch and tension, hand feel or wash durability, multifilaments (especially multifilaments with potential crimp properties) are preferred, and multifilaments that also satisfy all of the following physical properties a) to e) are more preferred.

[0052] a) Single fiber fineness: 1.0~3.0 dtex

[0053] b) Total fineness: 50–100 dtex

[0054] c) Strength: 2.0~5.5cN / dtex

[0055] d) Elongation: 15-50%

[0056] e) Hot water shrinkage rate: 5% or more (preferably 7% or more, more preferably 7 to 15%)

[0057] It should be noted that the hot water shrinkage rate is preferably 3% or more greater than the hot water shrinkage rate of the polyester fibers used in the back yarn and front yarn (which is the highest heat shrinkage rate when there are two or more types of polyester fibers), more preferably 3.5 to 8% greater.

[0058] The so-called latent curl property refers to the property that, although it does not curl (due to shrinkage) in its untreated state, it can begin to curl through heat treatment. If it has latent curl property, it will curl through heat treatment, resulting in the ability to impart elasticity to warp-knitted fabrics for clothing.

[0059] In the warp-knitted fabric constituting the present invention, it is preferable to also use conductive fibers along with the aforementioned polyester fibers (A). In the warp-knitted fabric of the present invention, by containing conductive fibers, static electricity generated due to friction, etc., can always be released, thus exhibiting excellent antistatic properties. Based on this understanding, it is preferable to include 0.1 to 3.0% by mass of conductive fibers in the warp-knitted fabric, particularly more preferably 0.5 to 2.0% by mass. If the content of conductive fibers is less than 0.1% by mass, the antistatic properties are poor. As a result, it is difficult to set the "initial and 10-wash static charge density" (as described later in (5)) to 7 μc / m³. 2 The following situations apply.

[0060] Conductive fibers are preferably used as the core yarn in the knitted structure. This prevents the conductive yarns from being exposed on the surface of the knitted fabric, thus improving its appearance and preventing breakage of the conductive yarns due to wear.

[0061] The conductive fibers of the present invention preferably contain conductive microparticles. Specifically, in addition to conductive fibers (single-component systems) formed from a mixture of fiber-forming resins such as polyester resins and polyamide resins containing conductive substances (conductive resin compositions), they can also be conductive fibers (composite-component systems) formed from conductive resin compositions and non-conductive resin compositions. Preferably, at least a portion of the conductive resin composition is exposed on the surface of the single fiber.

[0062] As a conductive material, there are no particular limitations. Examples include conductive carbon blacks such as furnace black, Ketjen black, acetylene black, and channel black; elemental metals such as silver, nickel, copper, iron, and tin; and metal compounds such as copper sulfide, zinc sulfide, and copper iodide. One or more of these can be used.

[0063] Furthermore, while there is no particular limitation on the resistance value of the conductive fiber, in order to achieve excellent antistatic performance, the electrostatic charge density should be 7 μC / m² both initially and after 10 washes. 2 The following is particularly preferred: 10 5 ~10 10 Ω / cm.

[0064] As for the conductive fibers mentioned above, commercially available products such as "MEGANA" manufactured by UNITIKA Trading Co., Ltd., "BELTRON" manufactured by KB SEIREN Co., Ltd., and "LUANA" manufactured by TORAY Co., Ltd. can also be used.

[0065] In addition, the conductive fibers as described above are preferably doubled yarns (B1) twisted together with polyester fibers (A), or warp and weft interwoven yarns (B2) interwoven with polyester fibers (A). By using conductive fibers in the form of doubled yarns or warp and weft interwoven yarns, the conductive yarns are less likely to be observed from the surface of the knitted fabric, the aesthetic appearance is improved, and the effect of preventing breakage of conductive yarns caused by wear can be improved. Therefore, as the middle yarn forming the warp-knitted fabric for clothing of the present invention, it is particularly preferred to comprise polyester fibers (A) with two or more polymers as constituent components, and doubled yarn (B1) of the polyester fibers (A) and conductive fibers or warp and weft interwoven yarn (B2) of the polyester fibers (A) and conductive fibers.

[0066] In order to endow the warp-knitted fabric of the present invention with sufficient antistatic performance, the conductive fibers are preferably arranged in the longitudinal direction (original Japanese: wale direction) at 1 thread per inch or more. In addition, when the middle yarn comprises the doubled yarn (B1) or the warp and weft interwoven yarn (B2) of polyester fibers (A) and conductive fibers, the mass ratio of polyester fibers (A) to conductive fibers is not particularly limited, but it is usually preferably 1 / 1 to 5 / 1.

[0067] The warp-knitted fabric for clothing of the present invention satisfies all the following conditions (1) to (3).

[0068] (1) The weft elongation measured by Japanese Industrial Standard JIS L1096 elongation method B (load 14.7N) is 30-90%;

[0069] (2) The weight per unit area is 150-270g / m 2 ;

[0070] (3) The weft bending stiffness (value B) is 0.020-0.100gf.cm 2 / cm.

[0071] By satisfying these characteristics, a warp-knitted fabric with moderate stretchability and excellent tension sense suitable for sportswear or work clothing, and excellent washing durability can be obtained.

[0072] First, the condition of the above (1) is that the weft elongation measured under a load of 14.7N according to Japanese Industrial Standard JIS L1096 elongation method B needs to be about 30% to 90%, particularly preferably 35% to 80%, and more preferably 40% to 65%.

[0073] When the weft elongation of the warp-knitted fabric for clothing of the present invention satisfies the above range, it has moderate stretchability suitable for following the skin stretching or body movement when wearing sportswear or work clothing.

[0074] It should be noted that the elongation of the warp direction of the warp-knitted fabric for clothing of the present invention is not limited as long as it does not impede the effect of the present invention; however, it is usually preferred to be about 5 to 30%, and more preferably 5 to 20%.

[0075] The condition in (2) above is that the weight per unit area is 150-270 g / m². 2 The preferred value is 170–260 g / m³. 2 By setting the weight per unit area within the above-mentioned range, the warp-knitted fabric of the present invention exhibits appropriate elasticity and tension suitable for sportswear or work clothes.

[0076] Furthermore, for the warp-knitted fabric of the present invention, in order to provide adequate elasticity and tension to the skin during the following movements required for sportswear or work clothes, the thickness is generally preferably about 0.5 to 1.5 mm, and particularly preferably 0.5 to 1.0 mm.

[0077] As per condition (3) above, the latitudinal bending stiffness (B value) is preferably 0.02–0.100 gf.cm. 2 / cm, preferably 0.025~0.06gf.cm 2 / cm. By maintaining the bending stiffness (B value) within the above range, excellent tension is achieved. That is, it is not too soft, but rather has moderate resilience. If the bending stiffness (B value) in the latitudinal direction is less than 0.020 gf.cm 2 If the B value is less than 0.100 gf.cm, the resulting warp-knitted fabric lacks elasticity, resulting in reduced silhouette for sportswear or workwear. Furthermore, while stretchability is easily achieved, shrinkage due to washing tends to increase. On the other hand, if the B value is greater than 0.100 gf.cm... 2 If the density is reduced to a certain value per centimeter, the resulting warp-knitted fabric will feel stiffer, have increased tension, and lack elasticity.

[0078] Furthermore, the radial bending stiffness (B value) is not particularly limited as long as it does not impair the effect of the present invention; however, it is generally preferred to be 0.020 to 0.07 gf.cm. 2 / cm, more preferably 0.025~0.06gf.cm 2 / cm.

[0079] The bending stiffness (B-value) of this invention is a value measured using a KES FB2-A (manufactured by Kato Tech).

[0080] In the warp-knitted fabric of the present invention, as a further condition (4), the shrinkage rate of both the warp and weft directions after 10 washes using the F-2 method (medium-temperature washing method; 60°C × 30 minutes) of the Japanese Industrial Standard JIS L1096F (washing method) is preferably 3% or less, particularly preferably 2.5% or less, and most preferably 2.0% to 0.3%. By ensuring that the shrinkage rate of both the warp and weft directions after 10 washes is 3% or less, excellent shape retention with good wash durability can be achieved. In particular, work clothes are repeatedly exposed to industrial washing, and are therefore often treated under high-temperature washing conditions. Therefore, it is required that the shape remains stable even after repeated washing, that is, that is, no shrinkage caused by washing is required. This requirement can be met in the present invention.

[0081] It should be noted that in the F-2 method (medium-temperature cleaning method) of the Japanese Industrial Standard JIS L1096 F method (cleaning method), the washing and drying operation is changed to "washing once at 60°C for 30 minutes, then washing twice with hot water at 40°C for 5 minutes and 40°C for 10 minutes, and then drying in a drum dryer at 60°C for 30 minutes", for a total of 10 cycles of this washing and drying operation.

[0082] Furthermore, in the aforementioned washing and drying operations, even when the washing temperature is changed from 60°C to 80°C, the warp shrinkage rate and weft shrinkage rate after 10 washes are preferably both within 3%. The shrinkage rate is preferably 2.5% or less, more preferably 2.0% or less. By ensuring that the warp and weft shrinkage rates are both within 3% or less after 10 washes when the temperature is changed to 80°C, excellent wash durability is achieved even under more severe washing conditions, resulting in the attainment of desired shape retention, etc.

[0083] Subsequently, using the warp-knitted fabric after 10 washes and drying operations as described above (after 10 washes), the shrinkage rate of the warp-knitted fabric for clothing of the present invention was measured as follows. First, the warp-knitted fabric was marked before washing according to Japanese Industrial Standard JIS L1096 8.39. Then, after 10 washes and drying operations as described above (after 10 washes), the length between the warp and weft marks of the warp-knitted fabric was measured, and the result can be calculated using the following formula.

[0084] Shrinkage rate (%) = 100 - [(Length of the marking space after washing / Length of the marking space before washing) × 100]

[0085] In addition, for the warp knitted fabric of the present invention, as the condition of (5), it is preferred that the electrostatic charge density (measured in accordance with Japanese Industrial Standard JIS L1094 C method) initially and after 10 washes is 7μC / m in terms of absolute value in any of the warp direction and weft direction when either an acrylic friction cloth or a nylon friction cloth is used as the friction cloth 2 Hereinafter, it is particularly more preferably 5μC / m 2 or less. Accordingly, when the warp knitted fabric of the present invention is made into a garment, the generation of static electricity during wearing can be suppressed, and the garment can be worn comfortably even in environments with low humidity where static electricity is easily generated such as winter.

[0086] It should be noted that the 10 washes in the condition of (5) are performed by the same method as the 10 washes in the condition of (3). That is, "after washing once under the conditions of a temperature of 60°C and a time of 30 minutes, two hot water washes are performed under the conditions of a temperature of 40°C for 5 minutes and a temperature of 40°C for 10 minutes, followed by drying in a tumble dryer at a temperature of 60°C for 30 minutes", and such washing and drying operations are performed for a total of 10 cycles.

[0087] Then, the warp knitted fabric for clothing of the present invention having the above-mentioned composition and characteristic values is preferably made into, for example, a warp knitted fabric structure as described later. The warp knitted fabric for clothing of the present invention can be knitted by warp knitting machines such as tricot warp knitting machines and raschel warp knitting machines.

[0088] In this case, as the needle density of the warp knitting machine, generally 20 to 32 needles per inch is preferred, and 28 to 32 needles per inch is more preferred. If the needle density does not satisfy the above range, it tends to be difficult for the obtained warp knitted fabric to satisfy the above characteristic values (1) to (5).

[0089] The warp knitted fabric for clothing of the present invention is a warp knitted fabric knitted by at least three guide bars (original Japanese: 筬) at the front, middle and back. It is preferred that polyester fibers are used for the front guide bar and back guide bar to perform plain stitch knitting (see Figure 2 (a)) or velvet stitch knitting (see Figure 2 (b)). Among these, a warp knitted fabric in which the front guide bar adopts velvet stitch knitting and the back guide bar adopts plain stitch knitting is preferred. It should be noted that the " Figure 2 " indicates the needle arrangement (this is also the same in Figures 3-5 ).

[0090] For the middle guide bar, for example, an insertion knitting structure is combined as the middle guide bar in the above-mentioned front and back warp knitted fabric. There is no particular limitation on the structure that can be adopted in the warp knitted fabric for clothing of the present invention, for example, as shown in Figure 3As shown, examples include a structure that combines a tricot stitch and / or a velvet knit stitch with an inlay stitch. It should be noted that the so-called inlay stitch is a stitch that does not have loops (original Japanese: ループ).

[0091] in Figure 2 and Figure 3 , (a) represents the part knitted with the back guide bar at 1-2 / 1-0, (b) represents the part knitted with the middle guide bar at 0-0 / 2-2, and (c) represents the part knitted with the front guide bar at 1-0 / 2-3.

[0092] In particular, as shown in Figure 3 , the middle guide bar forms an inlay stitch, and the front guide bar and the back guide bar form a knitted stitch (original Japanese: ニット组织). In addition, the portion formed by the middle guide bar is held by knitting a knitted stitch with the front guide bar. As described above, the back guide bar and the front guide bar together form an overlapping loop stitch, which makes the resulting polyester-based warp knitted fabric more stable, and can produce a warp knitted fabric that satisfies the conditions of (1) to (3) (preferably the conditions of (1) to (4), more preferably the conditions of (1) to (5)).

[0093] When obtaining the warp knitted fabric for clothing of the present invention, it is preferable that after scouring and drying the gray fabric knitted with the above-described structure to remove excess components (oil, impurities, etc.), heat setting is performed at 170 to 190°C to stabilize the shape. In addition, according to the application and other factors, it is preferable to dye by a conventional polyester dyeing method, and perform finishing setting at 150 to 170°C under the condition that the wale and course density after finishing is not more than 3% lower than the wale and course density after dyeing.

[0094] The present invention includes clothing comprising the warp knitted fabric for clothing of the present invention. The type of clothing is not particularly limited, and besides clothing worn on the upper body and clothing worn on the lower body, it also includes socks, gloves, scarves, hats, etc. Among them, the clothing of the present invention can be suitably used as sportswear or work clothes in consideration of the characteristics of the warp knitted fabric for clothing of the present invention, such as stretchability and washing durability.

[0095] The sportswear comprising the warp knitted fabric for clothing of the present invention refers to all clothes worn on the body when performing various sports. In addition, sports can be either indoor sports or outdoor sports. The work clothes comprising the warp knitted fabric for clothing of the present invention refers to all clothes worn when performing various work. Work can be either outdoor work or indoor work. Among them, clothes that can be used for both sportswear and work clothes are included in sportswear.

[0096] Examples

[0097] The following examples and comparative examples illustrate the features of the present invention in more detail. However, the scope of the present invention is not limited to the examples.

[0098] Example 1

[0099] Using a 28-gauge Trico knitting machine (manufactured by Karl Mayer) with 3 guide bars, and following the yarn design for the fabric, utilize... Figure 4 The knitted structure shown is woven to obtain a raw fabric. In this case, as the yarn feed arrangement, the back yarn and front yarn are supplied in an all-in arrangement, and the center yarn is supplied in a 1in-1out arrangement. In addition, for the knitted structure, the back yarn is set to "1-0 / 1-2 / / ", the front yarn is set to "2-3 / 1-0 / / ", and the center yarn is set to "0-0 / 3-3 / / ".

[0100] (1) Yarn design for fabrics

[0101] • L1 comb bar (backing yarn):

[0102] Polyester multifilament containing polyethylene terephthalate (84 dtex / 72f, strength 3.79 cN / dtex, elongation 17.7%, hot water shrinkage 3.8%)

[0103] • L2 comb bar (middle yarn):

[0104] (A) Polyethylene terephthalate / polybutylene terephthalate side-by-side composite fiber (84 dtex / 36f, strength 3.58 N / dtex, elongation 26.2%, hot water shrinkage 8.4%)

[0105] (B) The composite fiber and conductive fiber (UNITIKA "MEGANA" 28dtex / 2f) of (A) are twisted together with a twist of 500T / m (the composite fiber and conductive fiber of (A) are twisted together using one strand each). It should be noted that the twisted yarn is arranged as an insert yarn in 28 rows.

[0106] • L3 comb (front yarn):

[0107] The polyester multifilament used in L1 comb.

[0108] (2) Knitting structure

[0109] The back yarn is arranged in the L1 guide bar, the middle yarn in the L2 guide bar, and the front yarn in the L3 guide bar, using the weave described in Table 1. Figure 4 (The knitted structure shown).

[0110] The resulting green fabric is then scourted and dried to remove excess oil and impurities, and then heat-set at 180°C. Next, it is dyed with polyester at 130°C for 30 minutes, and then finished and set at 160°C to obtain the warp-knitted fabric.

[0111] Example 2

[0112] Using the same Trico braiding machine as in Example 1, the L2 guide bar in the yarn design of the fabric is modified as shown below, otherwise, the warp-knitted fabric is obtained in the same manner as in Example 1.

[0113] (1) Yarn design for fabrics

[0114] L2 comb (middle yarn):

[0115] (A) Polyethylene terephthalate / polybutylene terephthalate side-by-side composite fiber (56 dtex / 48f, strength 3.35 N / dtex, elongation 24.2%, hot water shrinkage 8.1%)

[0116] (B) The composite fiber and conductive fiber (UNITIKA "MEGANA" 28dtex / 2f) of (A) are twisted together with a twist of 500T / m (the composite fiber and conductive fiber of (A) are twisted together using one strand each). It should be noted that the twisted yarn is arranged as an insert yarn in 28 rows.

[0117] Example 3

[0118] Using the same Trico braiding machine as in Example 1, the L2 guide bar in the yarn design of the fabric is modified as shown below, otherwise, the warp-knitted fabric is obtained in the same manner as in Example 2.

[0119] (1) Yarn design for fabrics

[0120] L2 comb (middle yarn): Polyethylene terephthalate / polybutylene terephthalate side-by-side composite fiber (56dtex / 48f, strength 3.35N / dtex, elongation 24.2%, hot water shrinkage 8.1%)

[0121] Comparative Example 1

[0122] Using the same Trico braiding machine as in Example 1, the L2 guide bar in the yarn design of the fabric is modified as shown below, otherwise, the warp-knitted fabric is obtained in the same manner as in Example 1.

[0123] (1) Yarn design for fabrics

[0124] L2 comb (middle yarn):

[0125] (A) Polyester multifilament containing polyethylene terephthalate (84 dtex / 72f, strength 3.79 cN / dtex, elongation 17.7%, hot water shrinkage 3.8%)

[0126] (B) The multifilament and conductive fiber (UNITIKA "MEGANA" 28dtex / 2f) of (A) are twisted together in a 500T / m S-twist yarn (one multifilament and one conductive fiber from (A) are used to obtain the yarn). It should be noted that the twisted yarn is arranged in 28 rows as an insert yarn.

[0127] Comparative Example 2

[0128] Using the same Trico braiding machine as in Example 1, the L3 guide bar in the yarn design of the fabric was modified as shown below, otherwise, the warp-knitted fabric was obtained in the same manner as in Comparative Example 1.

[0129] (1) Yarn design for fabrics

[0130] L3 comb (front yarn): Polyethylene terephthalate / polybutylene terephthalate parallel composite fiber (84dtex / 36f, strength 3.58N / dtex, elongation 26.2%, hot water shrinkage 8.4%)

[0131] Comparative Example 3

[0132] Using the same Trico braiding machine as in Example 1, the L1 guide bar in the yarn design of the fabric was modified as shown below, otherwise, the warp-knitted fabric was obtained in the same manner as in Comparative Example 1.

[0133] (1) Yarn design for fabrics

[0134] L1 comb (back yarn): Polyethylene terephthalate / polybutylene terephthalate parallel composite fiber (84dtex / 36f, strength 3.58N / dtex, elongation 26.2%, hot water shrinkage 8.4%)

[0135] Comparative Example 4

[0136] Using the same Trico knitting machine as in Example 1, the knitting structure was changed to the knitting structure shown in Table 1 ( Figure 5 (The knitted structure shown) is otherwise obtained in the same manner as in Comparative Example 1, except that a warp-knitted fabric is obtained.

[0137] Experimental Example 1

[0138] The physical properties of the warp-knitted fabrics obtained in each embodiment and comparative example were measured as shown below. The results are presented in Table 1.

[0139] (1) Elongation, shrinkage, and electrostatic charge density of warp-knitted fabrics

[0140] The above method was used for determination.

[0141] (2) Weight per unit area of ​​warp-knitted fabric

[0142] The measurements and calculations were performed in accordance with Japanese Industrial Standard JIS L 10968.3.

[0143] (3) Thickness of warp-knitted fabric

[0144] The thickness of the warp-knitted fabric was measured using a PEACOCK DIAL THICKNESS GRADE MODEL H (0.01 mm) (manufactured by Ozaki Manufacturing Co., Ltd.).

[0145] (4) Bending stiffness (B value) of warp-knitted fabric

[0146] A bending tester (Kato Tech, product name "KES FB2-A") was used. The obtained warp-knitted fabric was cut into 20cm warp x 20cm weft pieces to prepare test pieces. The test pieces were tested at a curvature of -2.5cm. -1 ~+2.5cm -1 A bending test was conducted within the specified range with a curvature increase rate of 0.5 cm / sec. The bending test was performed in one cycle, and the bending stiffness B (unit: gf·cm) was determined as the bending stiffness value per unit length. 2 / cm).

[0147] (5) Strength, elongation, and hot water shrinkage of polyester fibers

[0148] The above method was used for determination.

[0149] (6) Feel

[0150] A professional team of 10 people evaluated the presence or absence of tension using the following three methods. The evaluation with the most participants was used, and the number of participants was also displayed.

[0151] 1. Excessive tension

[0152] 2. Possesses a moderate sense of tension.

[0153] 3. Lack of tension

[0154] [Table 1]

[0155]

[0156] *Electrostatic charge density (unit: μc / m²) 2 () indicates the value of the meridional / zonal direction.

[0157] As can be clearly seen from the results in Table 1, the warp-knitted fabrics obtained in Examples 1 to 3 meet all the conditions (1) to (3) specified in this invention, exhibiting excellent weft stretch and minimal shrinkage due to washing. Furthermore, they possess a moderate tension feel, making them suitable for sportswear or work clothes.

[0158] In particular, in Examples 1 and 2, based on the superior antistatic properties, polyester fibers (A) with two or more polymers as components and twisted yarns (B1) with conductive fibers are knitted into an insert structure in the middle. As a result, there will be no situation where conductive fibers are exposed to the surface of the warp-knitted fabric. Even if white is used for dyeing, the color of the conductive fibers is not easily reflected on the surface, and a good degree of whiteness can be maintained.

[0159] On the other hand, the warp-knitted fabric obtained in Comparative Example 1 has low elongation and poor elasticity in the weft direction because no composite fiber formed by two or more polyester polymers is used in the middle yarn.

[0160] The warp-knitted fabric obtained in Comparative Example 2, because it did not use composite fibers formed from two or more polyester polymers in the middle yarn, and used heat-shrinkable PET / PBT parallel composite fibers in the front structure forming the terry loop, had a stronger loop density, lower weft elongation, and poor elasticity. In addition, it had a high weft bending stiffness, excessive tension, and poor wearing comfort.

[0161] The warp-knitted fabric obtained in Comparative Example 3, because it did not use composite fibers formed from two or more polyester polymers in the middle yarn and used heat-shrinkable PET / PBT parallel composite fibers in the back structure forming the terry loop, exhibited the same tightness of the loops and poor elasticity as Comparative Example 2. Furthermore, it had a high bending stiffness value in the weft direction, resulting in excessive tension and poor wearing comfort.

[0162] The warp-knitted fabric obtained in Comparative Example 4 did not use composite fibers formed from two or more polyester polymers in the middle yarn, and the middle yarn did not have an interlaced structure. Although it had excellent elasticity, the weft shrinkage rate was high after 10 washes, resulting in poor wash durability. In addition, due to the low bending stiffness value in the weft direction, it lacked a sense of tension, thus reducing its silhouette as sportswear or workwear.

Claims

1. A warp-knitted fabric for clothing, characterized in that, It is a warp-knitted fabric that uses polyester fiber as the back yarn and front yarn, and a composite fiber formed by polyethylene terephthalate (PET) and polybutylene terephthalate (PBT) as the middle yarn to form an interlaced knitting structure, and satisfies all of the following conditions (1) to (3): (1) The elongation in the weft direction, measured by the elongation method B of Japanese Industrial Standard JIS L1096 under a load of 14.7 N, is 30% to 90%; (2) The weight per unit area is 160 g / m² 2 ~265g / m 2 ; as well as (3) The bending stiffness in the latitudinal direction, i.e., the value of B, is 0.020 gf.cm. 2 / cm~0.100gf.cm 2 / cm.

2. The warp-knitted fabric for clothing according to claim 1, further satisfies the following condition (4): (4) The shrinkage rate of the warp and weft directions after 10 cleanings at 60℃ for 30 minutes using the Japanese Industrial Standard JIS L1096 F-2 method, i.e., the medium temperature cleaning method, is less than 3%.

3. The warp-knitted fabric for clothing according to claim 1, wherein, As the middle yarn, it uses composite fibers and conductive fibers formed from polyethylene terephthalate (PET) and polybutylene terephthalate (PBT).

4. The warp-knitted fabric for clothing according to claim 3, wherein, The yarn includes: Composite fibers A and PBT formed from polyethylene terephthalate (PET) and polybutylene terephthalate (PBT) The composite fiber A, formed from polyethylene terephthalate (PET) and polybutylene terephthalate (PBT), is twisted with conductive fiber B1.

5. A garment comprising a warp-knitted fabric for garments according to any one of claims 1 to 4.

6. The fabric according to claim 5, wherein, The clothing is made of sportswear material.

7. The fabric according to claim 5, wherein, The fabric is for work clothes.

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