Single weft knitting

Abstract

To provide a single weft knitted fabric excellent in burst strength and excellent in wearing such as pleasant feel and easiness to move while being put on.SOLUTION: A single weft knitted fabric has at least a course including a first yarn and a second yarn. The course has a needle loop at which the first yarn and the second yarn are aligned and a sinker loop at which the first yarn and the second yarn are not aligned. At the sinker loop at which the first yarn and the second yarn are not aligned, either one of the first yarn and the second yarn is a welt structure and the other is a tuck structure.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present invention relates to a single weft knitted fabric. [Background technology]

[0002] Market demand for more comfortable clothing is increasing year by year, and there is a demand for lightweight underwear that feels good against the skin. To meet market needs, comfortable clothing has been provided by using finer fibers for clothing and by using higher gauge looms and knitting machines. However, because thinner threads reduce the strength of the fabric, fabrics made with thinner threads may have problems with durability when worn. The following Patent Document 1 discloses a double circular knitted fabric having high burst strength, which has rib yarns forming tuck stitches on the surface layer side and knit stitches on the back layer side. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-214408 Summary of the Invention [Problem to be solved by the invention]

[0004] However, double circular knitted fabrics such as those described in Patent Document 1 tend to be thick, and if they are knitted using only non-elastic yarns in order to prioritize burst strength, they lack stretchability, resulting in problems such as difficulty in moving when worn. In view of the state of the prior art, the problem that the present invention aims to solve is to provide a single weft knitted fabric that has excellent burst strength and excellent wearing comfort, such as softness against the skin and ease of movement while wearing it. [Means for solving the problem]

[0005] As a result of intensive research and repeated experiments to solve the above problems, the inventors of the present application unexpectedly found that a single knitted fabric having the following configuration can solve the above problems, and have thus completed the present invention.

[0006] That is, the present invention is as follows. [1] A single weft knitted fabric comprising at least a course including a first yarn and a second yarn, the course having needle loops in which the first yarn and the second yarn are aligned and sinker loops in which the first yarn and the second yarn are not aligned, wherein in the sinker loops in which the first yarn and the second yarn are not aligned, one of the first yarn and the second yarn is in a welt structure and the other is in a tuck structure. [2] The single weft knitted fabric according to [1], wherein at least one of the first yarn and the second yarn is an elastic yarn. [3] A single weft knitted fabric as described in [1] or [2], wherein the ratio of the number of sinker loops in which the first yarn and the second yarn are not aligned to the number of sinker loops in the entire knitted fabric is 25% or more. [4] A single weft knitted fabric according to any one of [1] to [3], wherein the first yarn and the second yarn alternate between a knit structure and a tuck structure or a welt structure in the weft direction of the knitted fabric. [5] A single weft knitted fabric according to any one of [1] to [4], further comprising a third yarn, the third yarn being plated with the first yarn or the second yarn. [6] A single weft knitted fabric according to any one of [1] to [5], wherein, among the sinker loops in which the first yarn and the second yarn are not aligned, the yarn length of the yarn knitting the welt structure is 300 mm / 100 w or less. [7] Clothing comprising the single weft knitted fabric according to any one of [1] to [6] above. [Effects of the Invention]

[0007] The single weft knitted fabric according to the present invention has excellent burst strength and is comfortable to wear, such as soft to the touch and easy to move in while wearing it. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is an explanatory diagram of the loop state of warp and weft knitting (knit). [Figure 2] FIG. 1 is an explanatory diagram of the loop state of the warp and weft knitting method (tuck). [Figure 3] This is an explanatory diagram of the loop state of the warp and weft knitting method (miss (welt)). [Figure 4] FIG. 10 is an explanatory diagram of a knitting structure of a single knitted fabric in warp and weft directions. [Figure 5] FIG. 10 is an explanatory diagram of the knitting structure of a double knitted fabric in warp and weft directions. [Figure 6] FIG. 10 is an explanatory diagram of the aligned state of the sinker loop portion in the process. [Figure 7] FIG. 10 is an explanatory diagram of the aligned state of the sinker loop portion in the process. [Figure 8] 1 is an example of a knitting structure of the present embodiment. [Figure 9] 1 is an example of a knitting method diagram of a knitting structure of the present embodiment. [Figure 10] 1 is an example of a knitting method diagram of a knitting structure of the present embodiment. [Figure 11] 1 is an example of a knitting method diagram of a knitting structure of the present embodiment. [Figure 12] 1 is an example of a knitting method diagram of a knitting structure of the present embodiment. [Figure 13] 1 is an example of a knitting method diagram of a knitting structure of the present embodiment. [Figure 14] 10 is an example of a knitting method diagram of a knitting structure of a comparative example. [Figure 15] 10 is an example of a knitting method diagram of a knitting structure of a comparative example. [Figure 16] 10 is an example of a knitting method diagram of a knitting structure of a comparative example. [Figure 17] 10 is an example of a knitting method diagram of a knitting structure of a comparative example. [Figure 18] 10 is an example of a knitting method diagram of a knitting structure of a comparative example. [Figure 19] 10 is an example of a knitting method diagram of a knitting structure of a comparative example. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the present invention will be described in detail. The weft knitted fabric of this embodiment includes at least a course including a first yarn and a second yarn, and the course has needle loops in which the first yarn and the second yarn are aligned, and sinker loops in which the first yarn and the second yarn are not aligned, and in the sinker loops in which the first yarn and the second yarn are not aligned, one of the first yarn and the second yarn is a welt structure and the other is a tuck structure, making it a single weft knitted fabric.

[0010] In this embodiment, a row of stitches continuing in the weft (horizontal) direction of the knitted fabric is called a course, and a row of stitches continuing in the warp (vertical) direction of the knitted fabric is called a wel. In this embodiment, a single weft knitted fabric is a knitted fabric having one needle loop surface 6 mainly composed of needle loops 5 and one sinker loop surface 8 mainly composed of sinker loops 7, as shown in Figure 4, and unless otherwise specified, refers to a weft knitted fabric knitted from a single row of needle beds.

[0011] A needle loop is a loop created when a yarn is pulled into a knitting needle, and a surface made up of needle loops is called a needle loop surface or technical face. For example, in a knit structure, the stitches created by pulling in the knitting needles are needle loops, as shown by the solid lines in Figure 1 (see Figure 1). In a tuck structure, the part of the old loop that overlaps with the needle loop is called a needle loop (see Figure 2). In a miss (welt) structure, the yarn does not catch on the needle, so there are no needle loops, and the yarn passes between adjacent needle loops in the same course, so all of the yarn becomes sinker loops (see Figure 3).

[0012] A sinker loop is a loop that is not continuous in the warp direction (wale direction) of the knitting fabric, formed by a needle on the needle bed that is paired with the needle that formed the sinker or needle loop, and is a loop made of yarn that spans between adjacent needle loops in the same course. The surface formed by this sinker loop is called the sinker loop surface or technical back. For example, in knit weaves, as shown by the dotted lines in Figure 1, it refers to a loop made of yarn that crosses between adjacent needle loops in the same course (see Figure 1). Similarly, in tuck weaves, it refers to a loop made of yarn that crosses between adjacent needle loops in the same course (see Figure 2). In miss (welt) weaves, the yarn does not catch on the needles, so there are no needle loops, and the yarn crosses between adjacent needle loops in the same course, so all of the loops become sinker loops (see Figure 3).

[0013] Even if a fabric is knitted using a weft knitting machine or a double circular knitting machine with two or more rows of needle beds, it is considered a single weft knitted fabric if it is knitted using only needle beds on one side, or if it is knitted using a mechanism that transfers stitches to the opposite needle bed and has a structure in which the sinker loops are not covered by the needle loops. For example, as shown in Figure 5, knitted fabrics such as smooth knits and cardboard knits are knitted fabrics in which the front and back of the knitted fabric are made up of only needle loops 5a and 5b, and the sinker loops 7 are sandwiched between the needle loops 5a formed by the dial needles and the needle loops 5b formed by the cylinder needles.Since the sinker loops 7 do not form a surface, the knitted fabric is a double circular knitted fabric.

[0014] The single weft knitted fabric of this embodiment includes at least a course including a first yarn and a second yarn. The first yarn and the second yarn may be different types of yarn or may be the same yarn. A course including the first yarn and the second yarn has needle loops in which the first yarn and the second yarn are aligned. In this embodiment, "aligned yarns" means that the first yarn and the second yarn form the same knitting structure. For example, when two or more yarns are fed to the same knitting needle to knit a knit loop, as in parallel knitting, the yarns form the same knitting structure and are parallel to form stitches.

[0015] The method for forming aligned needle loops may be any method, such as feeding the first yarn and the second yarn to the knitting needle from the same yarn path as in aligned knitting, or feeding the first yarn and the second yarn to the same knitting needle from separate yarn feeders, as long as the same knitting structure is formed. The course including the first yarn and the second yarn has a sinker loop in which the first yarn and the second yarn are not aligned. The following two situations are examples of when the sinker loop is not aligned. (1) A state in which the sinker loops of the first yarn and the sinker loops of the second yarn forming the same course are separated in the plane of the knitting fabric and do not overlap (states 1b (welt) and 2b (tuck) in Figure 6); and (2) A state in which either the sinker loop of the first thread or the sinker loop of the second thread protrudes above the sinker loop surface relative to the other sinker loop, and the sinker loops do not overlap each other (states 1b (welt) and 2b (welt) in Figure 7, the previous course is omitted).

[0016] In the single weft knitted fabric of this embodiment, in a sinker loop in which the first yarn and the second yarn are not aligned, one of the first yarn and the second yarn is a welt structure, and the other is a tuck structure (see Figure 6).

[0017] In order to knit a single weft knitted fabric in which one of the first and second yarns has a welt structure and the other has a tuck structure, appropriate measures can be taken, such as using a knitting machine with fingers that can change the yarn feeding angle to match the knitting structure, to create a large angle difference between the yarn paths of the first and second yarns, selecting a cam so that the second yarn forms a tuck structure on a knitting needle that uses the first yarn to form a welt, using a sinker for pile knitting to divide the yarn height into two levels, or increasing the tension difference between each yarn to separate the yarn paths.

[0018] The single weft knitted fabric of this embodiment has the above-mentioned knitting structure, so even when a load is applied and the knitted fabric is stretched and becomes coarse and dense, the yarn area between the needle loops becomes large, making it possible to obtain a burst strength that is sufficient for practical use even when thin yarns are used.

[0019] The yarn used for the single weft knitted fabric of this embodiment is not particularly limited, but natural fibers, synthetic fibers, and regenerated cellulose fibers are suitable for clothing. Examples of natural fibers include cotton, linen, silk, and wool. Examples of synthetic fibers include polyester fibers such as polyethylene terephthalate and polytrimethylene terephthalate, polyamide fibers such as nylon 6 and nylon 66, and polyolefin fibers such as polyethylene and polypropylene, and these fibers can be arbitrarily selected as bright yarns, semi-dull yarns, or full-dull yarns. Examples of regenerated cellulose fibers include rayon, cupra, and lyocell, and these may also be in the form of composite yarns with synthetic fibers, as described below. The cross-sectional shape of the fiber may be any cross-sectional shape, such as round, oval, W-shaped, cocoon-shaped, hollow fiber, etc. The form of the fiber is also not particularly limited, and may be raw yarn or crimped yarn such as false twisted yarn.

[0020] A composite yarn may be used for the single weft knitted fabric of this embodiment. The form of the composite yarn is not particularly limited, and a composite method such as interlacing or ply-twisting may be selected depending on the intended use. When a composite yarn of cellulose fiber and synthetic fiber is used, the fineness is preferably 19 to 90 decitex (dtex), which allows for the production of a thin knitted fabric with excellent wearability. When a single covered yarn (SCY) or double covered yarn (DCY), which is a composite yarn of elastic yarn and synthetic or natural fiber, is used, the total fineness of the elastic yarn and the composite yarn is preferably 30 to 100 dtex, and more preferably 40 to 80 dtex from the viewpoint of ease of knitted fabric production.

[0021] In the single weft knitted fabric of this embodiment, it is preferable that either the first yarn or the second yarn is a stretchable yarn, and more preferably, the yarn forming the tuck structure is stretchable. The term "stretchable yarn" refers to a yarn with a stretch rate (DRY) of 20% or more when measured according to JIS-L-1013-8.11-A, preferably 25% or more, and more preferably 30% or more. Examples of stretchable yarn include yarns crimped by heat setting, side-by-side construction, or eccentric sheath-core construction, and elastic yarns such as polytrimethylene terephthalate and polyurethane elastic yarns. By including a stretchable yarn in the single weft knitted fabric of this embodiment, not only is stretchability imparted by the stretch of the yarn, but the contraction of the sinker loops also improves the smoothness of the skin surface, making it easier to obtain a knitted fabric that feels good against the skin when worn.

[0022] As a yarn having a stretchable yarn, an elastic yarn is particularly preferred. Here, elastic yarn refers to a fiber with a maximum elongation of 100% or more. There are no particular limitations on the polymer or spinning method of the elastic yarn, and polyurethane-based or polyether ester-based elastic yarns can be used. For example, polyurethane-based elastic yarns can be dry-spun or melt-spun. It is preferable that the elastic yarn does not lose its stretchability at around 180°C, which is the normal processing temperature for the presetting process during dyeing. In addition, elastic yarns containing special polymers or inorganic powders can also be used, which have high setting properties, deodorizing properties, and antibacterial properties. The fineness of the elastic yarn is preferably 9 to 80 dtex, and more preferably 15 to 60 dtex from the perspective of ease of knitted fabric production.

[0023] In conventional knitted fabrics, polyurethane elastic yarns have a small contribution to improving burst strength, but in the knitted fabric of this embodiment, the yarn area that supports the load is large in the sinker loop section where the first yarn and the second yarn do not overlap, so if either the first yarn or the second yarn is an elastic yarn, the polyurethane elastic yarn can contribute to improving burst strength.

[0024] In the single weft knitted fabric of this embodiment, from the viewpoint of improving burst strength, the ratio of the number of unaligned sinker loops to the number of sinker loops in the entire knitted fabric is preferably 25% or more, more preferably 50% or more, and even more preferably 100%.

[0025] In order to adjust the ratio of the number of unaligned sinker loops to the number of sinker loops in the entire knitted fabric to 25% or more, in the case of a jacquard knitting machine, it is sufficient to design the structure in units of one needle, and in the case of a non-jacquard knitting machine, it is sufficient to increase or decrease the number of courses or wales in one complete structure. Note that one complete structure refers to the smallest repeating unit of the knitted structure that makes up the knitted fabric.

[0026] In the weft knitted fabric of this embodiment, it is preferable that the first yarn and the second yarn alternate between a knit structure and a tuck structure or a welt structure in the weft (horizontal, course) direction of the fabric to make it gentler against the skin. "The first yarn and the second yarn alternate between a knit structure and a tuck structure or a welt structure in the weft direction of the fabric" means, for example, as shown in Figure 8, that the first yarn 1 is knitted in the same course in the weft direction of the fabric in the form of a knit structure, a welt structure, a knit structure, a welt structure, ..., and the second yarn 2 is knitted in the same course in the weft direction of the fabric in the form of a knit structure, a tuck structure, a knit structure, a tuck structure, .... In this case, the first yarn and the second yarn are aligned to form a knit structure in needle loops 1a and 2a, while the first yarn forms a welted loop and the second yarn forms a tucked loop in sinker loops 1b and 2b, resulting in a structure in which the first yarn 1 and the second yarn 2 are not aligned in the sinker loops.

[0027] The arrangement of knits and tucks can be adjusted by using a plurality of needles with different butt lengths, by jacquard needle selection, or by other suitable changes depending on the knitting machine and the cam used.

[0028] The single weft knitted fabric of this embodiment may further contain a third yarn in order to impart functionality and improve burst strength, and the third yarn may be plated with the first yarn or the second yarn. The fabric may further include a fourth thread, and either the first thread or the second thread may be plated with the third thread, and the one of the first thread and the second thread that is not plated with the third thread may be plated with the fourth thread. Plating, also known as plating knitting, involves feeding multiple yarns to knitting needles and knitting each yarn in the same structure using the same knitting needles, and it is possible to select the yarn that is exposed on the surface of the knitted fabric depending on the yarn feeding conditions.

[0029] The knitting machine used to knit the single weft knitted fabric of this embodiment is not particularly limited. The gauge of the knitting machine can be selected arbitrarily, but it is preferable to use a knitting machine with a gauge of about 28 to 60. If the gauge is 28 or higher, the needle size is sufficiently small, so that a knitted fabric consisting of small stitches can be knitted using a fine-fineness yarn, and the knitted fabric surface is smooth, feels good to the touch, and is easy to obtain a knitted fabric with good aesthetics. If the gauge is 60 or lower, it is easy to prevent the loop size from becoming too small and to impart appropriate stretchability that does not cause stress when worn.

[0030] The single weft knitted fabric of this embodiment preferably has a burst strength of 200 kPa or more, more preferably 250 kPa or more, and even more preferably 300 kPa or more, according to the JIS-L1096-8.18.3-A method (Mullen method). If the burst strength is 200 kPa or more, the fabric will be highly durable and will not tear easily when worn as innerwear or the like. The burst strength of the weft knitted fabric of this embodiment can be improved by increasing the proportion of courses that include portions where the first yarn and the second yarn are not aligned in the sinker loop portion, and the proportion of these courses can be increased or decreased as appropriate depending on the purpose.

[0031] The kinetic friction coefficient μK of the sinker loop surface of the single weft knitted fabric of this embodiment, measured using a static / dynamic friction measuring instrument, Tribomaster Type: TL201Ts, manufactured by Trinity Labs, is preferably greater than 0 and not greater than 0.450, more preferably not greater than 0.400, and even more preferably not greater than 0.350. The smaller the kinetic friction coefficient μK, the lower the contact resistance between the skin and clothing when the knitted fabric is worn as clothing. If the kinetic friction coefficient μK of the sinker loop surface is 0.450 or less, when the knitted fabric is sewn with the sinker loop surface positioned against the skin and comes into contact with the skin, the knitted fabric has an excellent feel against the skin, with less friction between the skin and clothing. In the sinker loop portion of the weft knitted fabric of this embodiment, the smoothness of the sinker loop surface can be improved by increasing the number of sinker loops where the first yarn and the second yarn are not aligned. The proportion of such sinker loops can be increased or decreased as appropriate depending on the purpose. Furthermore, the smoothness of the sinker loop surface can be improved by increasing the stretchability of the yarn or using an elastic yarn.

[0032] The elongation rate of the single weft knitted fabric of this embodiment when subjected to a load of 14.7 N in the warp direction of the fabric is preferably 120% or more, and more preferably 150% or more. Furthermore, the elongation rate of the single weft knitted fabric of this embodiment when subjected to a load of 14.7 N in the weft direction of the fabric is preferably 80% or more, more preferably 85% or more, and even more preferably 90% or more. Clothing made using a knitted fabric with sufficient elongation rates in the warp and weft directions does not restrict human movement, resulting in clothing with excellent movement comfort. In the weft knitted fabric of this embodiment, the elongation rates in the warp and weft directions can be adjusted by selecting the gauge or changing the yarn length, and can be adjusted appropriately depending on the purpose.

[0033] The stretch recovery rate of the single weft knitted fabric in the warp direction of the knitted fabric of this embodiment is preferably 80% or more, and more preferably 90% or more. The stretch recovery rate of the single weft knitted fabric in the weft direction of the knitted fabric of this embodiment is preferably 80% or more, and more preferably 90% or more. If a garment uses a knitted fabric with sufficient stretch recovery rates in the warp and weft directions, the garment will be able to maintain its shape even after repeated wear, which will lead to an extended product life. In the weft knitted fabric of this embodiment, the stretch recovery rate can be increased by adjusting the gauge selection and yarn length, as well as by including an elastic yarn blend ratio of 5.0% or more, preferably 10% or more.

[0034] In the single weft knitted fabric of this embodiment, the length of the yarn per 100 welts in one course (loop length) is, from the viewpoint of skin surface smoothness, preferably 300 mm / 100 wt or less, more preferably 250 mm / 100 wt or less, and even more preferably 200 mm / 100 wt or less, for the yarn length of the unaligned sinker loops knitting the welt structure. By having the length be 300 mm / 100 wt or less, the sinker loops do not become convex on the knitted fabric surface, making it possible to maintain the smoothness of the sinker loop surface and obtain a knitted fabric with excellent wearing comfort. The loop length can be adjusted by adjusting the stitch density and yarn feed amount, as well as by changing the needle bed spacing, etc. There are no particular limitations on the method for checking whether a course contains a welt structure, and it can be checked by unraveling the knitted fabric or observing the knitted fabric.

[0035] The weight of the single weft knitted fabric of this embodiment is 70 g / m 2 ~250g / m 2 It is preferable that the thickness is 70 g / m 2 ~190g / m 2 More preferably, the weight is 70 g / m 2 If the weight is 190 g / m or more, the burst strength when made into clothing will be improved, and the knitted fabric will be less likely to cause problems when actually worn. 2 If the thickness is below this, the knitted fabric will not be too thick, resulting in a knitted fabric with a soft texture that is suitable for wearing as underwear.

[0036] The thickness of the single weft knitted fabric of this embodiment is preferably 0.30 mm to 1.00 mm, and more preferably 0.40 mm to 0.90 mm. If the thickness is 0.30 mm or more, problems with transparency and strength when worn are unlikely to occur, and if it is 1.00 mm or less, the fabric is sufficiently thin so that when used for underwear, it is less likely to become stuffy, feels good against the skin, and has a good texture.

[0037] The weft knitted fabric of this embodiment may be dyed. A typical dyeing and finishing process can be used as the dyeing and finishing method, with dyeing conditions suited to the fiber material used, and any dyeing machine, such as a jet dyeing machine, winch dyeing machine, or paddle dyeing machine, can be used. A processing agent that improves water absorbency and softness can also be used. Silicone, urethane, or ester softeners can be used, and the concentration can be selected appropriately depending on the desired texture of the knitted fabric. A concentration in the range of 0.1% owf to 2.0% owf reduces friction between stitches, thereby imparting soft stretch and recovery. [Example]

[0038] The present invention will be specifically explained below with reference to examples and comparative examples, but it should be understood that the present invention is not limited to these examples alone. The methods for measuring the characteristic values ​​used in the examples are described below. The knitted fabrics used for the measurements are knitted fabrics cut out from clothing, but the present invention also includes knitted fabrics that are not made into clothing, and the applications are not limited to clothing.

[0039] (1) The ratio (%) of the number of unaligned sinker loops to the total number of sinker loops in the entire knitted fabric In the weft knitted fabric of this embodiment, the ratio of unaligned sinker loops to the total number of sinker loops in the entire knitted fabric was calculated by selecting one complete structure, which is the smallest repeating unit of the stitch structure that makes up the knitted fabric, from any location in the knitted fabric, and visually measuring the total number of sinker loops and the number of sinker loops in which the first yarn and second yarn are unaligned, and dividing the latter by the former.

[0040] (2) Weight (g / m 2 ) The weight of the knitted fabric is measured in accordance with the mass per unit area method A (JIS method) under standard conditions of JIS-L-1096.

[0041] (3) Thickness (mm) The thickness of the knitted fabric is measured at three arbitrary positions on the knitted fabric using a knitted fabric thickness meter manufactured by PEACOCK, and the average value of the three positions is calculated.

[0042] (4) Knit density Number of welder: Measure the number of needle loops per inch in the weft direction (course direction) of the knitted fabric. In the case of knitted fabrics that include mesh sections, the number of needle loops may differ for each course depending on the knitted fabric structure. In this case, the number of needle loops in the course with the greatest number of needle loops is taken as the number of welder, expressed in units of wells / inch (w / inch (2.54 cm)). Number of courses: Measure the number of needle loops per inch in the warp direction (well direction) of the knitted fabric. In the case of knitted fabrics that include mesh sections, the number of needle loops may differ for each well depending on the knitted fabric structure. In this case, the number of needle loops in the well with the largest number of needle loops is taken as the number of wells, and is expressed in courses / inch (c / inch).

[0043] (5) Thread length in each course (mm / 100 wells) The area of ​​100 wells of the knitted fabric measured using the above method for measuring knitted fabric density is cut. In any one complete structure of the knitted fabric, all courses of the complete structure are unraveled, each yarn is extracted, and the yarn length is measured in a standard environment of 20°C and 65% humidity using the following method. Yarn with elongation less than 100%: One end of the inelastic yarn obtained by unraveling is fixed and hung, and the specified load according to the yarn type shown below is applied to the other end, and the length is measured after 30 seconds. The unit is expressed as mm / 100w. Note that for composite yarns of inelastic yarn and elastic yarn, the yarn length is measured using this method. <Load by thread type> Synthetic stretch bulky yarn, composite yarn of inelastic and elastic yarn: 8.82mN / dtex Other non-elastic yarns: 2.94mN / dtex Elastic yarn: One end of the unraveled elastic yarn is fixed and hung, and after confirming that the elastic yarn is almost straight, the length in this state is measured. The unit is expressed as mm / 100w.

[0044] (6) Weight mixing ratio (%) For any one complete knitted fabric, for all courses of the complete knitted fabric, an area equivalent to 100 wells in each course is cut and the fabric weight is measured in an environment of 20°C and 65%RH.Then, the fabric is unraveled, each yarn is extracted, and the yarn weight is measured in a standard environment of 20°C and 65%RH.The yarn weight of each fiber is divided by the knitted fabric weight before unraveling and measured as a percentage.

[0045] (7) Bursting strength (kPa) Burst strength was measured using JIS-L1096-8.18.3-A (Muhlen method) in kPa units. The detailed procedure is described below. Measurements were performed using a Muhlen burst strength tester manufactured by Daiei Scientific Instruments Co., Ltd. Five test specimens measuring 150 mm wide x 150 mm long were prepared. The sample was placed in an unstretched state between upper and lower clamping plates with a circular circular plane and a central opening of 30 mm ± 0.3 mm, and then clamped and fixed between the upper and lower clamping plates. Pressure was applied to the rubber diaphragm placed below the lower clamping plate, and the strength (kPa) at which the rubber diaphragm broke through the sample was recorded. The fabric was removed from the clamping plates, and the strength (kPa) of the rubber diaphragm alone at the time of breakage was recorded. The rubber diaphragm was made of pure rubber with a thickness of 0.84 to 0.89 mm and no mineral fillers. The burst strength (kPa) of the sample is calculated by subtracting the strength (kPa) of the rubber diaphragm alone at the time of rupture from the strength (kPa) at which the rubber diaphragm breaks through the sample. Measure each sample once, and calculate the average of the five measurements to obtain the burst strength (kPa).

[0046] (8) Elongation rate (%) and elongation recovery rate (%) The stretch rate and recovery rate of the knitted fabric in the warp direction (wale direction) and weft direction (course direction) are measured using JIS-L1096-8.16.2-B-1 method (constant load method). The test was conducted with a load of 14.7N, a load application time of 1 hour, and a recovery time of 1 hour after unloading. The test specimen was made to be 60mm wide x 300mm long, and a line was drawn 200mm from the fixed end. The distance between the fixed end and the line was measured after loading and unloading, and the amount of elongation was measured to determine the elongation rate and recovery rate.

[0047] (9) Dynamic friction coefficient μK on the sinker loop surface The dynamic friction coefficient μK of the sinker loop surface of the knitted fabric is measured using a static and dynamic friction measuring instrument Tribomaster Type: TL201Ts manufactured by Trinity Labs. For single knitted fabrics, the sinker loop surface is measured, and for double knitted fabrics, the dial surface is measured. When measuring, the friction element is a no-pattern type / contact surface of 11mm x 15mm, the measurement load is 3.75g, the friction speed is 30mm / sec, and the friction distance is 100mm, and the friction is carried out three times. The friction starts from the knitting start direction to the knitting end direction (forward pass), and after 100mm of friction, the friction direction is reversed and the friction is carried out from the knitting end direction to the knitting start direction (return pass). This operation is repeated three times, and the dynamic friction coefficient μK of each forward pass and the dynamic friction coefficient μK of each return pass are measured, and the average value for each forward and return pass is calculated. The following formula: Dynamic friction coefficient μK of the sinker loop surface = (dynamic friction coefficient μK on the outward path + dynamic friction coefficient μK on the return path) / 2 The coefficient of dynamic friction μK on the sinker loop surface was calculated using the above formula.

[0048] (10) Elasticity of thread (%) The stretchability of the yarn used in this embodiment is measured according to JIS-L-1013-8.11-A. A piece of at least 30 cm wide is cut out from any one complete structure of the knitted fabric, and all courses of the complete structure are unraveled. Each yarn is extracted and measured under a standard environment of 20°C and 65% RH.

[0049] (11) Wearing comfort Short-sleeved innerwear for the upper body was sewn using the knitted fabrics obtained in the Examples and Comparative Examples. A monitor wore the short-sleeved innerwear and then wore a dress shirt over the short-sleeved innerwear. Simulating a commute in early summer, the monitor sat motionless on a chair for 5 minutes after wearing the innerwear in an environment of 28°C and 50% RH. Afterwards, the monitor walked on a treadmill for 20 minutes at a speed of 4.5 km / hr. The wearing comfort from the time the innerwear was put on until the end of the walk was evaluated subjectively on a 5-point scale based on the following evaluation criteria for two items: [Item 1: Ease of movement while wearing] and [Item 2: Feel on the skin]. The test was conducted by 10 monitors, and the average score for the two items was used as the evaluation result. The average was calculated by rounding off any decimal places to the nearest tenth. An average score of 4.0 or higher was considered to indicate excellent wearability or comfort.

[0050] [Item 1: Ease of movement while wearing] The comfort of the garment was evaluated on a scale of 1 to 5 in terms of tightness and ability to follow movements. 5 points: Very comfortable 4 points: Comfortable 3 points: No particular discomfort 2 points: Unpleasant 1: Very uncomfortable.

[0051] [Item 2: Feel] The comfort of the garments was evaluated on a scale of 1 to 5 based on the degree of friction with the skin while wearing them and the feel of the fabric when held in the hand. 5 points: Very comfortable 4 points: Comfortable 3 points: No particular discomfort 2 points: Unpleasant 1: Very uncomfortable.

[0052] In the following examples, comparative examples, and tables, various yarns are designated as follows: Nylon: Ny Polyester: Es Polytrimethylene terephthalate: PTT Cotton:Co Cupra: Cu Polyurethane elastic thread: Pu The unit of filament number is expressed as f. Unless otherwise specified, bare polyurethane elastic yarn is used.

[0053] [Example 1] Using a 40-gauge single circular knitting machine, a knitted fabric was knitted according to the knitting method diagram in Figure 9 using the following yarns to obtain a grey fabric. First thread: Es 33dtex36f DTY Second thread: Pu 44dtex The grey fabric was relaxed and scoured in a continuous scouring machine, and then pre-set at 190°C for 1 minute. During dyeing, dyeing was carried out with the addition of 1.0% owf of fabric softener Nikka Silicon AMZ (Nicca Chemical Co., Ltd.), and finishing was carried out at 170°C for 1 minute to produce a knitted fabric. The evaluation results are shown in Tables 1 and 2 below.

[0054] [Example 2] A knitted fabric was produced in the same manner as in Example 1, except that the yarn usage was changed as follows. First thread: Ny 33dtex24f Woolly Second thread: Pu 22dtex The evaluation results are shown in Tables 1 and 2 below.

[0055] [Example 3] A knitted fabric was produced in the same manner as in Example 1, except that the yarn usage was changed as follows. First thread: Es 33dtex36f DTY Second thread: Cu 33dtex24f The evaluation results are shown in Table 1 below.

[0056] [Example 4] A knitted fabric was produced in the same manner as in Example 1, except that the yarn usage was changed as follows. First thread: Es 33dtex36f DTY Second thread: PTT 33dtex12f The evaluation results are shown in Tables 1 and 2 below.

[0057] [Example 5] A knitted fabric was produced in the same manner as in Example 1, except that the yarn usage was changed as follows. First thread: Es 33dtex36f DTY Second thread: Ny 8dtex5f x Pu 17dtex SCY The evaluation results are shown in Tables 1 and 2 below.

[0058] [Example 6] A knitted fabric was produced in the same manner as in Example 1, except that the yarn usage was changed as follows. First thread: Pu 44dtex Second thread: Pu 44dtex The evaluation results are shown in Table 1 below.

[0059] [Example 7] A knitted fabric was produced in the same manner as in Example 1, except that the yarn usage was changed as follows, and the first yarn and the third yarn were knitted by plating. First thread: Es 50dtex72f Second thread: Pu 22dtex Third thread: Pu 22dtex The evaluation results are shown in Tables 1 and 2 below.

[0060] [Example 8] A 40-gauge single circular knitting machine was used to knit a fabric according to the knitting method diagram in Figure 10 using the following yarns to obtain a greige machine. In this example, the first yarn and the second yarn were knitted in the same course, and the third yarn and the fourth yarn were knitted in a course different from the course including the first yarn and the second yarn. In addition, the third yarn and the fourth yarn were knitted in parallel. First thread: Es 33dtex36f DTY Second thread: Pu 22dtex Third thread: Es 33dtex36f DTY Fourth thread: Pu 22dtex The grey fabric was relaxed and scoured in a continuous scouring machine, and then pre-set at 190°C for 1 minute. During dyeing, dyeing was carried out with the addition of 1.0% owf of the softener Nikka Silicon AMZ (Nicca Chemical Co., Ltd.), and finishing was performed at 170°C for 1 minute. A knitted fabric was produced. The evaluation results are shown in Tables 1 and 2 below.

[0061] [Example 9] A knitted fabric was produced in the same manner as in Example 8, except that the knitting pattern was changed to that shown in Fig. 11. The evaluation results are shown in Tables 1 and 2 below.

[0062] [Example 10] Except for not using the fourth yarn, a knitted fabric was knitted in the same manner as in Example 9. The evaluation results are shown in Tables 1 and 2 below.

[0063] [Example 11] A knitted fabric was produced in the same manner as in Example 8, except that the knitting pattern was changed to that shown in Fig. 12. The evaluation results are shown in Tables 1 and 2 below.

[0064] [Example 12] A knitted fabric was produced in the same manner as in Example 1, except that the yarn usage was changed as follows. First thread: Cu 84dtex36f Second thread: Pu 10dtex The evaluation results are shown in Tables 1 and 2 below.

[0065] [Example 13] A knitted fabric was produced in the same manner as in Example 2, except that the knitting method diagram was changed to that shown in Figure 13. The evaluation results are shown in Tables 1 and 2 below.

[0066] [Example 14] Using a 24 gauge single circular knitting machine, a knitted fabric was knitted according to the knitting method diagram in Figure 9 using the following yarns to obtain a grey fabric. First thread: Es 33dtex36f DTY Second thread: Pu 44dtex The grey fabric was relaxed and scoured in a continuous scouring machine, and then pre-set at 190°C for 1 minute. During dyeing, dyeing was carried out with the addition of 1.0% owf of fabric softener Nikka Silicon AMZ (Nicca Chemical Co., Ltd.), and finishing was carried out at 170°C for 1 minute to produce a knitted fabric. The evaluation results are shown in Tables 1 and 2 below.

[0067] [Example 15] Using a 28-gauge single circular knitting machine, a knitted fabric was knitted according to the knitting method diagram in Figure 9 using the following yarns to obtain a grey fabric. First thread: Es 33dtex36f DTY Second thread: Pu 44dtex The grey fabric was relaxed and scoured in a continuous scouring machine, and then pre-set at 190°C for 1 minute. During dyeing, dyeing was carried out with the addition of 1.0% owf of fabric softener Nikka Silicon AMZ (Nicca Chemical Co., Ltd.), and finishing was carried out at 170°C for 1 minute to produce a knitted fabric. The evaluation results are shown in Tables 1 and 2 below.

[0068] [Comparative Example 1] Using a 40-gauge single circular knitting machine, a knitted fabric was knitted according to the knitting method diagram in Figure 14 using the following yarns to obtain a greige fabric. The first yarn and the second yarn were used in parallel. First thread: Es 33dtex36f DTY Second thread: Pu 44dtex The grey fabric was relaxed and scoured in a continuous scouring machine, and then pre-set at 190°C for 1 minute. During dyeing, dyeing was carried out with the addition of 1.0% owf of fabric softener Nikka Silicon AMZ (Nicca Chemical Co., Ltd.), and finishing was carried out at 170°C for 1 minute to produce a knitted fabric. The evaluation results are shown in Tables 3 and 4 below.

[0069] Comparative Example 2 Except for changing the density by changing the tension during heat setting, knitted fabrics were produced in the same manner as in Comparative Example 1. The evaluation results are shown in Tables 3 and 4 below.

[0070] Comparative Example 3 A knitted fabric was produced in the same manner as in Comparative Example 1, except that the knitting method diagram was changed to that shown in Fig. 15. The evaluation results are shown in Tables 3 and 4 below.

[0071] Comparative Example 4 A knitted fabric was produced in the same manner as in Comparative Example 1, except that the yarn usage was changed as follows. First thread: Es 33dtex36f DTY Second thread: Cu 33dtex24f The evaluation results are shown in Tables 3 and 4 below.

[0072] Comparative Example 5 A knitted fabric was produced in the same manner as in Comparative Example 1, except that the yarn usage was changed as follows. First thread: Pu 44dtex Second thread: Pu 44dtex The evaluation results are shown in Tables 3 and 4 below.

[0073] Comparative Example 6 A 32-gauge single circular knitting machine was used to knit a fabric using the following yarns according to the knitting method diagram in Figure 16, resulting in a greige machine. The first yarn and the second yarn are knitted in the same course, but by using a sinker for pile knitting, the sinker loop of the second yarn is made to protrude significantly above the sinker loop surface, and is not aligned with the sinker loop of the first yarn. First thread: Es 84dtex 36f DTY Second thread: Co 40 / 1 The grey fabric was relaxed and scoured in a continuous scouring machine, and then pre-set at 190°C for 1 minute. During dyeing, dyeing was carried out with the addition of 1.0% owf of fabric softener Nikka Silicon AMZ (Nicca Chemical Co., Ltd.), and finishing was carried out at 170°C for 1 minute to produce a knitted fabric. The evaluation results are shown in Tables 3 and 4 below.

[0074] Comparative Example 7 Using a single circular knitting machine capable of 36-gauge spiral knitting, a fabric was knitted using the following yarns according to the knitting method diagram in Figure 17 to obtain a grey fabric. The first yarn and the second yarn are knitted in the same course, but by using spiral knitting, the sinker loops of the second yarn are not aligned with the sinker loops of the first yarn. First thread: Es 33dtex36f DTY Second thread: Pu 22dtex The grey fabric was relaxed and scoured in a continuous scouring machine, and then pre-set at 190°C for 1 minute. During dyeing, dyeing was carried out with the addition of 1.0% owf of fabric softener Nikka Silicon AMZ (Nicca Chemical Co., Ltd.), and finishing was carried out at 170°C for 1 minute to produce a knitted fabric. The evaluation results are shown in Tables 3 and 4 below.

[0075] [Comparative Example 8] Using a 28-gauge single circular knitting machine, a fabric was knitted using the following yarns according to the knitting method diagram in Figure 18 to obtain a greige fabric. The first, second, and third yarns were each knitted in separate courses. The fourth yarn was knitted parallel to the first yarn. First thread: Co 24 / 1 Second thread: Co 24 / 1 Third thread: Es 110dtex72f DTY Fourth thread: Pu 44dtex The grey fabric was relaxed and scoured in a continuous scouring machine, and then pre-set at 190°C for 1 minute. During dyeing, dyeing was carried out with the addition of 1.0% owf of fabric softener Nikka Silicon AMZ (Nicca Chemical Co., Ltd.), and finishing was carried out at 170°C for 1 minute to produce a knitted fabric. The evaluation results are shown in Tables 3 and 4 below.

[0076] Comparative Example 9 Using a 32 gauge double circular knitting machine, a fabric was knitted using the following yarns according to the knitting method diagram in Figure 19 to obtain a grey fabric. The first yarn, second yarn, third yarn, and fourth yarn were each knitted in a separate course. First thread: Es 110dtex48f DTY Second thread: Es 33dtex12f DTY Third thread: Es 84dtex 36f DTY Fourth thread: Es 56dtex24f DTY The grey fabric was relaxed and scoured in a continuous scouring machine, and then pre-set at 190°C for 1 minute. During dyeing, dyeing was carried out with the addition of 1.0% owf of fabric softener Nikka Silicon AMZ (Nicca Chemical Co., Ltd.), and finishing was carried out at 170°C for 1 minute to produce a knitted fabric. The evaluation results are shown in Tables 3 and 4 below.

[0077] [Table 1]

[0078] [Table 2]

[0079] [Table 3]

[0080] [Table 4] [Industrial Applicability]

[0081] The single weft knitted fabric according to the present invention has excellent burst strength and excellent wearing comfort, such as softness against the skin and ease of movement while wearing, and can therefore be suitably used as a fabric for underwear. [Explanation of symbols]

[0082] 1 The First Thread 1a Needle loop of first thread 1b First thread sinker loop 2 The Second Thread 2a Needle loop of second thread 2b Sinker loop of the second thread 3 The Third Thread 4 The Fourth Thread 5 needle loop 5a needle loop 5b needle loop 6 Needle loop surface 6a Needle loop surface 6b Needle loop surface 7 Sinker Loop 8 Sinker loop surface

Claims

1. A single weft knitted fabric comprising at least a course including a first yarn and a second yarn, the course having needle loops in which the first yarn and the second yarn are aligned and sinker loops in which the first yarn and the second yarn are not aligned, wherein in the sinker loops in which the first yarn and the second yarn are not aligned, one of the first yarn and the second yarn is in a welt structure and the other is in a tuck structure.

2. 2. The single weft knit fabric of claim 1, wherein at least one of the first yarn and the second yarn is an elastic yarn.

3. 3. The single weft knitted fabric according to claim 1, wherein the ratio of the number of sinker loops in which the first yarn and the second yarn are not aligned to the number of sinker loops in the entire knitted fabric is 25% or more.

4. The single weft knitted fabric according to any one of claims 1 to 3, wherein the first yarn and the second yarn alternately repeat a knit structure and a tuck structure or a welt structure in the weft direction of the knitted fabric.

5. The single weft knitted fabric according to any one of claims 1 to 4, further comprising a third yarn, the third yarn and the first yarn or the second yarn being plated together.

6. The single weft knitted fabric according to any one of claims 1 to 5, wherein the yarn length of the yarn knitting the welt structure in the sinker loop in which the first yarn and the second yarn are not aligned is 300 mm / 100 w or less.

7. A garment comprising the single weft knitted fabric according to any one of claims 1 to 6.

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