Weft-knitted fabric

Abstract

The invention provides a weft-knitted fabric which has stretchability, excellent smoothness on a sinker cambered surface and large fluctuation on a needle-knitted cambered surface. The weft-knitted fabric provided by the invention comprises inelastic yarns in all coil rows; elastic yarns are contained in a certain coil transverse row; a course A, a course B, and a course C of one course or two or more consecutive courses in the same structure are sequentially repeated in the knitting end direction; the course A, the course B and the course C are respectively different textures; the course A comprises loops; the transverse coil row B comprises loops and tucks; the transverse coil row C comprises loops, floating threads and elastic yarns; tuck knitting in which one or more loops of the course A and tuck of the course B are consecutively formed on the same wale; floating threads of the tuck knitting and the course C are continuous on the same wale at at least more than one position; and the ratio of the coil length of the coil row C to the coil length of the coil row A is 0.50-0.95.

Description

Technical Field

[0001] This invention relates to weft-knitted fabrics. Background Technology

[0002] The market demands clothing that is both well-designed and comfortable, and to meet this demand, a wide variety of knitted fabrics for clothing have been offered to date.

[0003] Patent Document 1 discloses a single-sided knitted fabric consisting of alternating roving A and fine yarn B with an apparent thickness ratio of 1 / 1.5 or less, exhibiting a pique mesh-like appearance on the surface and a pile-like appearance on the back.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Publication No. 60-52983 Summary of the Invention

[0007] The problem the invention aims to solve

[0008] As knitted fabrics are used in clothing for superior comfort, a smooth hand feel is required. By making the yarns constituting the fabric finer and the loops smaller, a smooth sinker surface can be obtained, but at the same time, the undulation of the knitted surface also decreases. Therefore, in conventional knitted fabrics, it is difficult to balance the smoothness of the sinker surface with the design appeal provided by the larger undulations of the knitted surface. While the technical solution described in Patent Document 1 shows a pique mesh-like appearance with undulating knitted surfaces, the sinker surface does not have a smooth hand feel due to the protruding loops forming the pile.

[0009] Furthermore, when elastic fibers such as polyurethane are woven in to impart stretchability, the undulation of the knitted surface becomes even smaller due to the smaller coil size.

[0010] In view of the problems of these prior art, the present invention aims to provide a weft-knitted fabric that has excellent stretchability, smoothness on the sinking arc surface, and large undulation on the needle-knitted arc surface.

[0011] Solution for solving the problem

[0012] In order to solve the above-mentioned problems, the inventors of this application conducted in-depth research and repeated experiments, and unexpectedly discovered that the problems could be solved by the following structure, thereby completing the present invention.

[0013] That is, the present invention is as follows.

[0014] [1] A weft-knitted fabric, wherein non-elastic yarn is included in all loop rows; elastic yarn is included in a certain loop row; loop rows A, loop rows B, and loop rows C of one loop row, or two or more loop rows of the same structure, are repeated sequentially in the knitting end direction; the loop rows A, the loop rows B, and the loop rows C are each of different structures; the loop row A includes loops; the loop row B includes loops and tucks; the loop row C includes loops and floats, and also includes elastic yarn; tuck knitting is formed by the continuous loops of one or more loop rows A and the tucks of the loop rows B on the same loop warp; the tuck knitting and the floats of the loop row C are continuous on the same loop warp at at least one point; and the loop length (L) of the loop row C is... C ) and the coil length (L) of the coil row A A The ratio of (L) C / L A The value is 0.50~0.95.

[0015] [2] According to the weft knitted fabric described in [1] above, wherein the loop row B consists of two or more consecutive loop rows from the loop row at the start of knitting to the loop row at the end of knitting, in the same structure.

[0016] [3] According to the weft-knitted fabric described in [1] or [2] above, wherein the loop row A is composed only of loops.

[0017] [4] The weft-knitted fabric according to any one of [1] to [3] above, wherein the loop row B consists only of loops and tufts.

[0018] [5] According to any one of [1] to [4] above, the number of consecutive loops in the same loop row as the floats of the loop row C is 50% or more relative to the total number of loops in the weft knitted fabric.

[0019] [6] According to the weft knitted fabric described above [5], the number of consecutive loop knits on the same loop warp as the floats of the loop row C is 100% of the total number of loop knits of the weft knitted fabric.

[0020] [7] The weft-knitted fabric according to any one of [1] to [6] above, wherein the ratio of the fineness of the non-elastic yarn with the largest fineness contained in the loop row C to the fineness of the non-elastic yarn with the largest fineness contained in the loop row A is less than 1.0.

[0021] [8] The weft-knitted fabric according to any one of [2] to [7] above, wherein, in the loop row B, the fineness of the loop row on the knitting start side is less than 1.0 relative to the fineness of the inelastic yarn contained in the loop row on the knitting end side.

[0022] [9] The weft-knitted fabric according to any one of [1] to [8] above, wherein the inelastic yarn contained in the loop row A is short fiber.

[0023]

[10] The weft-knitted fabric according to any one of [2] to [9] above, wherein the inelastic yarn contained in the loop row B on the starting side of the knitting is short fiber.

[0024]

[11] The weft-knitted fabric according to any one of [1] to

[10] above, wherein the loop row A is composed only of inelastic yarn.

[0025]

[12] The weft-knitted fabric according to any one of [2] to

[11] above, wherein, in the loop row B, the loop row on the knitting end side contains elastic yarn.

[0026]

[13] The weft-knitted fabric according to any one of [2] to

[12] above, wherein the inelastic yarn contained in the loop row B on the knitting end side is a long fiber.

[0027]

[14] The weft-knitted fabric according to any one of [1] to

[13] above, wherein the inelastic yarn contained in the loop row C is a long fiber.

[0028]

[15] The weft-knitted fabric according to any one of [2] to

[14] above, wherein the finest yarn in the inelastic yarn contained in the loop row A is different from the finest yarn in the inelastic yarn contained in the loop row on the knitting start side in the loop row B.

[0029]

[16] The weft-knitted fabric according to any one of [2] to

[15] above, wherein the non-elastic yarns included in the loop rows A and the loop rows B on the knitting start side are all cellulose yarns.

[0030]

[17] The weft-knitted fabric according to any one of [1] to

[16] above, wherein the weft-knitted fabric is a single-weft knitted fabric.

[0031]

[18] A shirt comprising the weft-knitted fabric described in any one of [1] to

[17] above.

[0032] The effects of the invention

[0033] The weft-knitted fabric of the present invention has excellent stretchability, smoothness of the sinking arc surface, and large undulation of the needle-knitted arc surface. Therefore, it can be used for fiber products that come into direct contact with the skin and require design, such as shirts, underwear, bottoms, jackets, masks and other fiber products, and is particularly suitable for shirt applications. Attached Figure Description

[0034] Figure 1 This is an illustration of a circular structure.

[0035] Figure 2 This is an explanatory diagram of a cluster organization.

[0036] Figure 3 This is an explanatory diagram of the floating thread structure.

[0037] Figure 4 This is an example of a weft-knitted fabric of the present invention.

[0038] Figure 5 It refers to the method for collecting test pieces used to determine the fluctuation index and the direction of movement of the friction element during the measurement.

[0039] Figure 6 This is a knitting pattern diagram of an example of the weft-knitted fabric of the present invention and an explanatory diagram of the relationship between the markings in Tables 1 to 5 below corresponding to the knitting pattern. Detailed Implementation

[0040] The embodiments of the present invention will now be described in detail.

[0041] One embodiment of the present invention is a weft-knitted fabric, which includes non-elastic yarn in all loop rows; includes elastic yarn in a certain loop row; loop rows A, B, and C, consisting of one loop row or two or more consecutive loop rows of the same weave, are repeated sequentially in the knitting end direction; loop rows A, B, and C are each of different weaves; loop row A includes loops; loop row B includes loops and tucks; loop row C includes loops and floats, and also includes elastic yarn; tuck knitting is formed by continuous loops of one or more loops of loop row A and tucks of loop row B on the same wale; the tuck knitting and the floats of loop row C are continuous at least once on the same wale; and the loop length (L) of loop row C is... C ) and the coil length (L) of the coil row A A The ratio of (L) C / L A The value is 0.50~0.95.

[0042] In this instruction manual, "coil row" (hereinafter referred to as (C)) refers to a continuous row of loops in the weft direction of the knitted fabric, and "coil warp" (hereinafter referred to as (W)) refers to a continuous row of loops in the warp direction of the knitted fabric (see reference). Figure 4 ).

[0043] In this specification, "knitted curved surface" refers to the surface formed by the curved protruding part, i.e., the knitted arc, and is synonymous with the process front (TF). Figures 1-3 (The paper surface).

[0044] In this specification, "settlement arc surface" refers to the surface formed by the concave portion of the arc, i.e., the settlement arc, and is synonymous with the process back side (TB). Figures 1-3 (The inside of the paper).

[0045] In looped structures (hereinafter also referred to as "looped", abbreviated as (K)), such as Figure 1 The loops formed by introducing the needle, as seen in the white yarn section, are called NL loops. In tuck stitch (hereinafter also simply referred to as "tuck stitch," abbreviated as (T)), similar loops are formed... Figure 2 The loops formed by introducing the needle in the white yarn section are called needle loops. In the float (miss) weave (hereinafter also simply "float," abbreviated as (W)), such as... Figure 3 In the diagonal section, the yarn is not caught on the needle, so there is no needle arc. It becomes yarn that spans between adjacent needle arcs in the same loop row, and therefore all of it becomes a sinker arc (SL).

[0046] In this instruction manual, "non-elastic yarn" refers to fibers with a breaking elongation of less than 100%.

[0047] In this instruction manual, "elastic yarn" refers to fibers with a breaking elongation of 100% or more.

[0048] <Coil row A>

[0049] Coil row A includes loops. Coil row A may also contain braided structures other than loops, but preferably consists only of loops (see reference). Figure 4 By using loops A consisting solely of loops, the amount of looped loops in the weft-knitted fabric increases, thus improving the elongation and resilience of the weft-knitted fabric, and enhancing its motion tracking ability.

[0050] A loop row A can consist of only one loop row, or it can consist of two or more consecutive loop rows of the same weave. When a loop row A consists of two or more consecutive loop rows of the same weave, the yarns contained in each loop row can also be different.

[0051] <Coil row B>

[0052] Coil row B includes loops and tucks. Coil row B may also contain weave structures other than loops and tucks, but preferably consists only of loops and tucks (see reference). Figure 4 By using loop row B, which consists only of loops and tucks, the number of tucks increases, creating an undulating surface on the knitted surface, thus improving the design flexibility of the weft-knitted fabric.

[0053] Coil row B can consist of only one coil row, or it can consist of two or more consecutive coil rows arranged in the same pattern (see reference). Figure 4 From the viewpoint of increasing the undulation achieved by the tuck knit and forming a unit area weight suitable for wearing, the loop row B is preferably composed of two or more consecutive loop rows, more preferably two or more consecutive loop rows or three or more consecutive loop rows. When the loop row B is composed of two or more consecutive loop rows in the same structure, the yarn contained in each loop row may also be different.

[0054] <Coil row C>

[0055] The coil row C comprises loops and floats. The coil row C may also contain braided structures other than loops and floats, but preferably consists only of loops and floats (see reference). Figure 4 Since loop row C consists only of loops and floats, the yarn length of loop row C becomes smaller, the needle knitting arc of loop row C becomes smaller, and the size difference of the loops between loop row C and the loop knitting formed by loop rows A and B becomes larger, thus the undulations formed on the needle knitting arc surface become larger.

[0056] Furthermore, elastic yarn is included in the aforementioned coil row C. By including elastic yarn in coil row C, the coil size of coil row C decreases due to the shrinkage of the elastic yarn (see reference). Figure 4 The difference in size between the float yarn and the loops forming the protrusions increases the undulation of the knitted surface. Furthermore, in the loop row C, the float yarn has fewer contact points with other yarns on the sinking surface, resulting in a higher degree of yarn freedom (see reference). Figure 4 Therefore, by including elastic yarn in the coil row C, the elasticity of the elastic yarn can be fully utilized, and the elongation recovery is improved.

[0057] The coil row C can consist of only one coil row, or it can consist of two or more consecutive coil rows of the same weave. From the viewpoint of improving the smoothness of the sinker surface by suppressing the protrusion of the floats into the sinker arc caused by the overlap of the floats, the coil row C is preferably composed of 1 to 3 coil rows. When the coil row C is composed of two or more consecutive coil rows of the same weave, the yarns contained in each coil row can also be different.

[0058] <Arrangement of coil rows A to C>

[0059] In the weft-knitted fabric of this embodiment, loop rows A, B, and C are repeated sequentially towards the end of the knitting process. For example, in the weft-knitted fabric of this embodiment, from the start to the end of the knitting process, it can be knitted as A, B, C, A… or as A, B, B, C, A…; A, B, B, C, C, A…, using any one or more loop rows A, B, and C as multiple loop rows (refer to Tables 1-5). Figure 6 ).

[0060] <Knitting with loops>

[0061] In this embodiment of the weft-knitted fabric, a tucked knit is formed by continuously looping in loop row A and tucking in loop row B on the same wale (see reference). Figure 4 (The loops on the left are longitudinal). In this embodiment, the knitted fabric creates large undulations on the knitted surface by forming tuck loops.

[0062] In the weft-knitted fabric of this embodiment, the tufting knitting formed by the looping of loop row A and the tufting of loop row B is continuous with the floats of loop row C at least once on the same loop warp (see reference). Figure 4 (Left-side loop warp). By continuously weaving the above-described tuck stitches and the floats of loop row C on the same loop warp at at least one point, the tuck stitches formed by loop rows A and B become larger, thus increasing the undulation of the knitted surface. Furthermore, by employing a structure where the floats of loop row C, positioned on the sinking surface, fill the depressions of the sinking surface formed by loop rows A and B, the smoothness of the sinking surface is improved. According to the same viewpoint, in the weft-knitted fabric of this embodiment, in one complete structure, the proportion of tuck stitches continuously woven on the same loop warp with the floats of loop row C relative to the total number of tuck stitches is preferably 50% or more, more preferably 100%. Additionally, one complete structure refers to the smallest repeating unit of the knitting structure constituting the fabric. Furthermore, in the weft-knitted fabric of this embodiment, the tuck stitches constituting the "total number of tuck stitches in one complete structure" can be included not only in loop row B, but also in loop rows A and / or loop row C.

[0063] <The length L of the coil in the row C of coils> C The coil length L of the coil row A A The ratio >

[0064] In the weft-knitted fabric of this embodiment, the loop length L of the loop row C is... C The coil length L of the coil row A A The ratio (L) C / L A The value of L is 0.50~0.95, preferably 0.60~0.90, and more preferably 0.68~0.85. By making the above L... C / L A With a value of 0.50 or higher, the needle arc of the loop row C will not become too small, thus achieving stretch suitable for wearing. Furthermore, by making the aforementioned L... C / L A With a value of 0.95 or less, the size difference between the stitches formed by loop rows A and C in the stitch-knitted arc surface creates undulations. Furthermore, the sinker arc of loop row C does not protrude from the sinker arc surface, resulting in excellent smoothness. This is used to... C / L A There are no particular limitations on the method of adjusting to 0.50~0.95. For example, one could increase the number of turns in coil row A or decrease the number of turns in coil row C.

[0065] <Non-elastic yarn>

[0066] The weft-knitted fabric of this embodiment contains non-elastic yarns in all loop rows.

[0067] As a non-elastic yarn, natural fibers, synthetic fibers, and regenerated (refined) cellulose fibers can be used. Examples of natural fibers include cotton, linen, silk, and wool. Examples of synthetic fibers include polyester fibers such as polyethylene terephthalate and polypropylene terephthalate; polyamide fibers such as nylon 6 and nylon 66; and polyolefin fibers such as polyethylene and polypropylene. These fibers can be selected arbitrarily as bright, semi-dull, or completely dull yarns, and the cross-sectional shape of the fiber can be any shape such as round, elliptical, W-shaped, cocoon-shaped, or hollow yarn. There are no particular limitations on the fiber form; it can be a raw yarn, a false-twist crimped yarn, etc. Examples of regenerated (refined) cellulose fibers include rayon, cupro fiber, and lyocell fiber. Regenerated (refined) cellulose fibers can be in the form of monofilaments or twisted yarns, or in the form of composite yarns with synthetic fibers as shown in the examples below.

[0068] There are no particular limitations on the form of the composite yarn of regenerated (refined) cellulose fiber and synthetic fiber; any composite method suitable for the intended use, such as interlacing or twisting, can be selected. The fineness of the composite yarn of cellulose fiber and synthetic fiber is preferably 19 dtex to 90 dtex. By using the fineness of the composite yarn of regenerated (refined) cellulose fiber and synthetic fiber within the above range, it is easy to obtain knitted fabrics that are highly flexible, thin, and provide excellent comfort in hot environments.

[0069] <Elastic yarn>

[0070] In the weft-knitted fabric of this embodiment, elastic yarn is included in loop row C, and preferably in loop row B, either loop row A or loop row B. By including elastic yarn in the structure having the aforementioned loop rows A, B, and C, the weft-knitted fabric of this embodiment can suppress the flattening of the knitted surface caused by the shrinkage of the elastic yarn, and impart elasticity to the weft-knitted fabric.

[0071] In the weft-knitted fabric of this embodiment, the loop row A preferably does not contain elastic yarn, that is, it is composed only of non-elastic yarn. By making the loop row A only of non-elastic yarn, it is possible to form a tucked knit without causing the knitting arc to shrink. Therefore, it is easy to form greater undulations in the knitting arc surface. Moreover, the loops of the tucked knit are difficult to close, and air can easily pass through, thus improving the quick-drying properties of the weft-knitted fabric.

[0072] In the knitted fabric of this embodiment, when there are two or more consecutive loop rows B, it is preferable that the loop rows on the end of the knitting process include elastic yarn. In this embodiment, by including elastic yarn in the loop rows B on the end of the knitting process, the shrinkage of the knitted arc can be minimized, thus easily suppressing the flattening of the knitted arc surface caused by the elastic yarn. Furthermore, in this embodiment, by including elastic yarn in the loop rows B on the end of the knitting process, compared to including elastic yarn in the loop rows on the beginning of the knitting process, the number of non-elastic yarns fixing the elastic yarn in the knitted arc is reduced, thus the elastic yarn is easier to deform, and it is easier to obtain an elongation and recovery suitable for wearing.

[0073] There are no particular limitations on the raw materials and spinning methods of the elastic yarn. Polyurethane-based or polyether ester-based elastic yarns can be used. Additionally, elastic yarns produced by dry spinning or melt spinning can be used, for example. The elastic yarn is preferably designed to maintain its elasticity at around 180°C, the typical processing temperature during the pre-forming stage of dyeing. To impart functionalities corresponding to high shape retention, deodorization, and antibacterial properties, the elastic yarn may contain functionalizing agents such as special polymers or inorganic substances. The fineness of the elastic yarn is preferably 9 dtex to 155 dtex, and more preferably 15 dtex to 80 dtex from the viewpoint of ease of manufacturing weft-knitted fabrics.

[0074] In the weft-knitted fabric of this embodiment, the elastic yarn can include bare yarn (not covered by non-elastic yarn) and covered yarn (bare yarn with bare yarn covered by non-elastic yarn). However, from the viewpoint of improving the smoothness of the back of the fabric, bare yarn is preferred. Furthermore, in weft-knitted fabrics using bare yarn as the elastic yarn, regarding the handling of excessive sweating during exercise or in hot environments, moisture is less likely to remain around the elastic yarn, resulting in faster drying of the fabric and greater comfort during wear. Moreover, compared to covered yarn, the fibers of bare yarn are finer in weft-knitted fabrics using bare yarn as the elastic yarn, making it less likely to create unevenness on the knitted surface and resulting in a smoother hand feel.

[0075] When using covered yarn as elastic yarn, single-covered yarn (SCY) or double-covered yarn (DCY) can be used as covered yarn. The total fineness of the covered yarn is preferably 30 dtex to 200 dtex, and more preferably 40 dtex to 155 dtex from the viewpoint of ease of manufacturing knitted fabrics.

[0076] From the viewpoint of imparting stretchability and increasing the undulation of the knitted surface, the blending rate of elastic yarn in this embodiment is preferably 5.0% by mass or more.

[0077] <Other preferred methods>

[0078] In the weft-knitted fabric of this embodiment, the fineness F of the non-elastic yarn with the highest fineness contained in the loop row C is... C The fineness F of the non-elastic yarn with the highest fineness in the loop row A A The ratio (F) C / F A The preferred value is less than 1.0, more preferably 0.20 to 0.98, further preferably 0.25 to 0.93, and most preferably 0.30 to 0.90. By making the above F... C / F A With a value of 0.20 or higher, the yarn formed by the coil rows C fills the depressions formed by the coil rows A and B on the settlement arc surface, making the settlement arc surface smoother. Furthermore, by making the aforementioned F... C / F A A value less than 1.0 can suppress the float of the coil row C from protruding on the sinker surface, thus improving the smoothness of the sinker surface and consequently increasing the undulation of the knitted surface.

[0079] In the knitted fabric of this embodiment, it is preferable that the inelastic yarn included in the loop row C is a long fiber. By using long fibers in the loop row C, the frictional resistance with the knitting needles is reduced during knitting, and compared with short fibers of the same fineness, smaller yarn lengths can be used for knitting. Therefore, smaller loops can be obtained, and the undulation of the knitted surface can be further increased. In addition, by using long fibers in the loop row C, the fuzziness of the sinking surface is reduced, and the smoothness is improved.

[0080] From the viewpoint of improving smoothness by suppressing yarn from warping due to floats and protruding into the sinker surface, the fineness of the monofilament of the non-elastic yarn included in the loop row C is preferably 3.0 dtex or less, more preferably 2.5 dtex or less, and even more preferably 1.8 dtex or less. Furthermore, by making the fineness of the monofilament of the non-elastic yarn included in the loop row C 3.0 dtex or less, the floats of the loop row C are less likely to protrude into the sinker surface. Therefore, the floats of the loop row C are reliably positioned towards the concavity of the sinker surface formed by the tucked weave, and the smoothness of the sinker surface is greatly improved.

[0081] When there are two or more consecutive loop rows B, the fineness (F) of the non-elastic yarn contained in the loop row on the weaving start side. BS The fineness (F) of the non-elastic yarn contained in the loop rows on the end of the weave. BE The ratio of (F) BS / F BE The value is preferably less than 1.0, more preferably 0.20 to 0.95, and even more preferably 0.25 to 0.90. By making the above F... BS / F BE If the value is less than 1.0, the configuration of the two non-elastic yarns in the tuck knitting is stable, thus reducing the weight per unit area of ​​the fabric, and the undulation of the knitted surface will not decrease.

[0082] The non-elastic yarn included in the loop row on the weaving end side of loop row B is preferably a long fiber with a fineness of 200 dtex or less. The non-elastic yarn included in the loop row on the weaving end side of loop row B is woven towards the side closest to the sinking surface, thus, by using a fiber with a fineness of 200 dtex or less and / or long fibers, the sinking surface is easily smoothed. Furthermore, if loop row B consists of only one loop row, this single loop row is referred to as the "loop row on the weaving end side" described above.

[0083] In the loop row B, from the viewpoint of suppressing yarn creasing and protruding towards the sinking arc surface to improve smoothness, the monofilament fineness of the non-elastic yarn included in the loop row B on the weaving end side is preferably 3.0 dtex or less, more preferably 2.5 dtex or less, and even more preferably 1.8 dtex or less.

[0084] The fineness F of the non-elastic yarn contained in the loop row on the weaving start side of loop row B BS The fineness F of the non-elastic yarn with the largest fineness contained in the loop row A A The ratio (F) BS / F A The value is preferably less than 1.00, more preferably less than 0.90. By making the above F... BS / F A If the value is less than 1.00, the undulation of the knitted surface will not decrease, which can reduce the weight per unit area of ​​the fabric and obtain knitted fabrics with excellent quick-drying properties.

[0085] In the weft-knitted fabric of this embodiment, in order to suppress the luster of the knitted surface and make the weft-knitted fabric more suitable for casual clothing, the non-elastic yarns included in loop rows A and / or loop rows B are preferably short fibers, and particularly preferably cellulose fibers. Furthermore, according to the same viewpoint, in loop row B, the non-elastic yarns included in the loop rows on the knitting start side are preferably short fibers.

[0086] The weft-knitted fabric in this embodiment is preferably a single-weft knitted fabric. A single-weft knitted fabric refers to a knitted fabric woven by a single-weft knitting machine, which is a single-layer knitted fabric with both a needle-knitted curved surface and a sinker curved surface. Because the weft-knitted fabric in this embodiment is a single-weft knitted fabric, it is possible to achieve a highly designed texture with the minimum necessary yarn amount, and it is also possible to reduce the fabric's weight per unit area. Therefore, a knitted fabric with excellent design and wearing comfort can be obtained.

[0087] In the weft-knitted fabric of this embodiment, the elongation of the warp and / or weft directions under a 14.7N load is preferably 30% or more, more preferably 40% or more, and even more preferably 50% or more. If the elongation of the warp and / or weft directions is 30% or more, it will not hinder human movement when made into clothing, and therefore clothing with excellent movement comfort can be made.

[0088] In the weft-knitted fabric of this embodiment, the elongation recovery rate in the warp and / or weft directions is preferably 40% or more, more preferably 50% or more, and even more preferably 60% or more. If the elongation recovery rate in the warp and / or weft directions is 40% or more, the garment can maintain its shape even after repeated wear, thus extending the product's lifespan.

[0089] The preferred unit area weight of the weft-knitted fabric in this embodiment is 130 g / m². 2 ~250g / m 2 More preferably 190g / m 2 ~230g / m 2 If the weight per unit area is 130g / m² 2The above results in increased burst strength when made into clothing, making it a superior knitted fabric for practical wear. Additionally, if the weight per unit area is 250g / m²... 2 In this way, the knitted fabric will not become too thick, and a knitted fabric with the appropriate stiffness required to maintain the shape of the product can be obtained, such as a knitted fabric suitable for wearing as a polo shirt.

[0090] The thickness of the weft-knitted fabric in this embodiment is preferably 0.40 mm to 1.50 mm, more preferably 0.60 mm to 1.40 mm. If the thickness is 0.50 mm or more, there will be no issues with transparency or strength when wearing it. In addition, if the thickness is 1.50 mm or less, the fabric will not become too thick, and a fabric with the appropriate stiffness required to maintain the shape of the product can be obtained, for example, a fabric suitable for wearing as outerwear.

[0091] The knitting machine used to obtain the weft-knitted fabric of this embodiment is not particularly limited, and the machine size can be chosen arbitrarily, but it is preferred to use a knitting machine with a size of around 20 to 44. If a knitting machine with a size of 20 to 44 is used, it is possible to prevent the loop size from becoming too small, and it is possible to knit yarn with a fineness suitable for pattern expression, thus making it easier to balance appropriate stretch and design.

[0092] The weft-knitted fabric of this embodiment can also be dyed. As a dyeing and finishing method, conventional dyeing and finishing processes can be used, with dyeing conditions appropriate to the fiber raw materials used. The dyeing machine used can be any type, such as a liquid dyeing machine, rope dyeing machine, or paddle dyeing machine. Furthermore, processing agents that improve water absorption and softness can be used. As a softener, silicone-based, carbamate-based, or ester-based softeners can be used. The concentration can be appropriately selected according to the desired hand feel of the knitted fabric. If it is in the range of 0.1% owf to 2.0% owf, the bending softness becomes good, the friction between loops is reduced, thereby imparting soft stretch and resilience.

[0093] <Applications>

[0094] The knitted fabric of this embodiment has excellent design due to the large undulations of the knitted arc surface and the smoothness of the sinking arc surface. Therefore, it can be used for fiber products that come into direct contact with the skin and require design, such as shirts, underwear, bottoms, jackets, face masks, etc., and is especially suitable for shirts.

[0095] Example

[0096] The present invention will be described in more detail below through examples. However, the present invention is not limited to these examples.

[0097] The following describes the method for measuring the characteristic values ​​used in the embodiments, etc. Furthermore, the knitted fabric used for measurement is a knitted fabric cut from clothing fabric, but the present invention also includes knitted fabrics that are not used as clothing fabric, and its application is not limited to clothing fabrics.

[0098] (1) Weight per unit area (g / m²) 2 )

[0099] The mass per unit area of ​​knitted fabrics is determined by the mass-per-unit-area method (JIS method) under standard conditions based on JIS-L-1096.

[0100] (2) Thickness (mm)

[0101] To determine the thickness of the knitted fabric, a knitted fabric thickness gauge manufactured by PEACOCK was used to measure the thickness at any five locations on the fabric, and the average value of the five locations was calculated.

[0102] (3) Quick-drying properties (residual water content after 60 minutes)

[0103] The knitted fabric was cut into 15cm×15cm pieces as test pieces. The amount of load fabric was adjusted so that the total weight of one test piece and the qualified Type III load fabric of JISL 1930 Appendix H was 1.0kg. The test pieces and the load fabric were washed together in a household washing machine with hot water at 40°C for 15 minutes ten times. After that, the test pieces were laid flat to dry.

[0104] The test pieces were conditioned for 24 hours at 20°C and 65% relative humidity. Under the same conditions, the mass (W) of the measuring cup (8cm in diameter, 10cm in height, cylindrical polypropylene) was measured. c Next, the conditioned test piece is placed in the cup, and the mass of the cup and the test piece is measured (W). c+t Next, using a micropipette, 300 μl of pure water was dripped onto the settling arc of the fabric, and the mass (W) was recorded immediately. c+t+w Then, calculate the mass of the dripping water (W) using the following formula. w ).

[0105] W w =W c+t+w -W c+t

[0106] Next, with the fabric placed in the cup, let it sit for 60 minutes to allow it to dry. Then, measure the weight (W) of the cup and the fabric. c+t The residual water rate after 60 minutes is calculated using the following formula: ′).

[0107] Residual water percentage after 60 minutes (%) = (W c+t ′-W c+t ) / W w ×100

[0108] The lower the residual moisture content after 60 minutes, the better the quick-drying properties of the knitted fabric.

[0109] (4) Coil length

[0110] In any complete knitted fabric, for all the loop rows of that complete knitted fabric, the range of 100 loop warp rows in each loop row is cut and unknitted, and each yarn is pulled out. Under the standard environment of 20℃ and 65%, the yarn length is measured by the following method.

[0111] For yarns with an elongation of less than 100%: Fix one end of the non-elastic yarn obtained by unknitting and suspend it. Apply a specified load corresponding to the yarn type shown below to the opposite end and measure the length after 30 seconds. The unit is marked as mm / 100w. In addition, for composite yarns of non-elastic and elastic yarns, the loop length is measured by this method.

[0112] <Specified load corresponding to yarn type>

[0113] Composite yarn of synthetic fiber stretch bulky yarn, non-elastic yarn and elastic yarn: 8.82 mN / dtex

[0114] Other non-elastic yarns: 2.94 mN / dtex

[0115] Elastic yarn: Fix one end of the unknitted elastic yarn and suspend it, confirming that the elastic yarn is approximately straight, and measure its length in this state. The unit is marked as mm / 100w.

[0116] (5) Elongation and elongation recovery

[0117] The elongation and elongation recovery of the knitted fabric in the warp (longitudinal) and weft (transverse) directions were determined using the JIS-L 1096-8.16.2-B-1 method (constant load method). The load was 14.7 N.

[0118] (6) The magnitude of the undulations of the knitted arc surface and the smoothness of the sinking arc surface (undulation index).

[0119] Test pieces were collected with a width of 50 mm and a length of 200 mm, with the length direction inclined at 45° relative to the warp direction of the knitted fabric. For the knitted curved surface and the sinker curved surface of the test pieces, a TriboMaster Type: TL201Ts dynamic and static friction tester manufactured by Trinity Labs was used to rub along the length direction of the test pieces from the knitting end side to the knitting start side (reverse knitting) under the following conditions.

[0120] Friction components: WC-Co alloy type (main material: tungsten carbide), thickness 0.5mm × width 5.0mm

[0121] • Measurement load: 3.75g

[0122] Friction speed: 30 mm / s

[0123] Friction component travel distance: 70.0mm

[0124] • Measurement interval: 1.0 ms

[0125] Four test pieces were collected from different parts of the weft-knitted fabric, and each piece underwent five measurements (20 measurements each for the knitted curved surface and the sinking curved surface). The analysis was performed using the "Tribo analysis software ver. 6.02". Specifically, the measurement interval was selected from 0.52 seconds to 2.08 seconds after the start of the measurement. The standard deviation (μKSD) of the dynamic friction coefficient μK was calculated, and the fluctuation index (UI) of the 20 measurements of the dynamic friction coefficient μKSD was calculated using the following formula. The larger the UI value, the greater the fluctuation of the measured surface.

[0126] [Mathematical Expression 1]

[0127]

[0128] Below, the undulation index of the knitted curved surface and the sinking curved surface are respectively labeled as UI. N and UI S If UI N A value of 1.10 or higher indicates that an undulation capable of displaying arbitrary patterns has been created on the knitted surface. If the UI... S If the value is below 1.30, the friction between the sinking arc surface and the skin is reduced, so it can be said to be a knitted fabric with excellent wearing comfort.

[0129] [Examples 1-16, Comparative Examples 1-6]

[0130] Using a single-knitting machine, knit the fabric according to the machine number, weave, and yarn design listed in the table below to obtain a greige fabric. Relax and refine the greige fabric using a continuous scouring machine, then pre-set it at 190°C for 1 minute. Dyeing was performed with 1.0% owf of softener Nikka Silicon AMZ (Nikka Chemical Co., Ltd.), followed by a final setting at 170°C for 1 minute to produce the knitted fabric. The evaluation results are shown in Tables 1 to 5 below.

[0131] In Tables 1-5 below, Ny represents nylon, Pet represents polyester, Co represents cotton, Pu represents polyurethane elastic yarn, SCY represents single-covered yarn, K represents loop, T represents tuck, and W represents float. For polyester and nylon, for example, 220 dtex 48f indicates a total fineness of 220 dtex and 48 monofilaments. For cotton, for example, 26 / 1 indicates a cotton count of 26 and a monofilament count. Additionally, unless otherwise specified, polyurethane elastic yarn uses bare yarn. For SCY, a material is made by winding 22 dtex polyurethane elastic yarn stretched to 2.4 times its original length with 33 dtex 34f polyester fiber at 1000 T / m. "Loop row number" refers to the knitting sequence of loop rows in a complete weave, with the loop row with the smaller number as the starting side. "Needle number" refers to the arrangement of knitting needles in a complete weave, knitting sequentially starting from the needle with the smaller number.

[0132] [Table 1]

[0133]

[0134] [Table 2]

[0135]

[0136] [Table 3]

[0137]

[0138] [Table 4]

[0139]

[0140] [Table 5]

[0141]

[0142] Industrial availability

[0143] The weft-knitted fabric of the present invention has excellent stretchability, smoothness of the sinking arc surface, and large undulation of the needle-knitted arc surface. Therefore, it can be used for fiber products that come into direct contact with the skin and require design, such as shirts, underwear, bottoms, jackets, masks and other fiber products, and is particularly suitable for shirt applications.

[0144] Explanation of reference numerals in the attached figures

[0145] NL, needle arc; SL, sinker arc; OL, old coil; N, loop; T, coiled; W, float.

Claims

1. A weft-knitted fabric, wherein, The entire loop course contains non-elastic yarn; a certain loop course contains elastic yarn; loop courses A, B, and C, or two or more consecutive loop courses of the same weave, are repeated sequentially towards the end of the weave; loop courses A, B, and C are each a different weave; loop course A contains loops; loop course B contains loops and tucks; loop course C contains loops and floats, and also contains elastic yarn; tuck weave is formed by the continuous loops of one or more loops of loop course A and tucks of loop course B on the same wale; the tuck weave and the floats of loop course C are continuous at least once on the same wale; and the loop length (L) of loop course C is... C ) and the coil length (L) of the coil row A A The ratio of (L) C / L A The value is 0.50~0.

95.

2. The weft-knitted fabric according to claim 1, wherein, The coil row B consists of two or more consecutive coil rows from the coil row at the start of the weaving to the coil row at the end of the weaving, using the same weave pattern.

3. The weft-knitted fabric according to claim 1 or 2, wherein, The coil row A consists only of coils.

4. The weft-knitted fabric according to claim 1 or 2, wherein, The coil row B consists only of coiled coils and coiled coils.

5. The weft-knitted fabric according to claim 1 or 2, wherein, The number of consecutive loops in the same wale as the float of the loop row C is more than 50% of the total number of loops in the weft-knitted fabric.

6. The weft-knitted fabric according to claim 5, wherein, The number of consecutive loops in the same wale as the float of the loop row C is 100% of the total number of loops in the weft-knitted fabric.

7. The weft-knitted fabric according to claim 1 or 2, wherein, The ratio of the fineness of the non-elastic yarn with the largest fineness contained in the coil row C to the fineness of the non-elastic yarn with the largest fineness contained in the coil row A is less than 1.

0.

8. The weft-knitted fabric according to claim 2, wherein, In the coil row B, the fineness of the inelastic yarn contained in the coil row on the start side of the weaving is less than 1.0 compared to the fineness of the inelastic yarn contained in the coil row on the end side of the weaving.

9. The weft-knitted fabric according to claim 1 or 2, wherein, The inelastic yarn contained in the coil row A is short fiber.

10. The weft-knitted fabric according to claim 2, wherein, In the coil row B, the inelastic yarn contained in the coil row on the weaving start side is short fiber.

11. The weft-knitted fabric according to claim 1 or 2, wherein, The coil row A is composed only of inelastic yarn.

12. The weft-knitted fabric according to claim 2, wherein, In the coil row B, the coil row on the weaving end side contains elastic yarn.

13. The weft-knitted fabric according to claim 2, wherein, In the coil row B, the inelastic yarn contained in the coil row on the weaving end side is long fiber.

14. The weft-knitted fabric according to claim 1 or 2, wherein, The inelastic yarn contained in the coil row C is a long fiber.

15. The weft-knitted fabric according to claim 1 or 2, wherein, The finest yarn in the inelastic yarn contained in the coil row A has a different fineness than the inelastic yarn contained in the coil row on the starting side of the weaving in the coil row B.

16. The weft-knitted fabric according to claim 1 or 2, wherein, In both coil rows A and coil rows B, the non-elastic yarns contained in the coil rows on the weaving start side are cellulose yarns.

17. The weft-knitted fabric according to claim 1 or 2, wherein, This weft-knitted fabric is a single-weft knitted fabric.

18. A shirt, wherein, The shirt comprises the weft-knitted fabric as described in claim 1 or 2.

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