Weft knitted fabric

Abstract

Provided is a weft knitted fabric that is excellent in heat retention and quick-drying properties and has high smoothness on a skin-facing side, without restriction of thread type. The present invention relates to a single weft knitted fabric comprising: a course A composed only of at least one knit and at least one tuck; and a course B composed only of at least one knit and at least one welt. A course-A group comprising the course A that is continuous in the knitting end direction in the same tissue, and a course-B group comprising the course B that is continuous in the knitting end direction in the same tissue are alternating in the knitting end direction. All tucks of the course-A group are continuously knitted on the same wale as the welt of the course-B group continuously knitted in the knitting end direction. In the course-A group, the maximum number of knit loops existing between adjacent tucks knitted on the same course and the maximum number of knit loops existing between the tuck (T1) on the most knitting start side and the tuck (T2) on the knitting start side of the adjacent course A group knitted on the same wale are within specific ranges.

Description

Weft knitted fabric

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

[0002] There is a high demand in the market for warm and comfortable clothing, and to meet this demand, various knitted fabrics for clothing have been provided. The following Patent Document 1 discloses a warp knitted fabric characterized in that polyester yarn having a denier of 50 and filaments of 144 is used, the yarn constituting at least one surface of the fabric is subjected to a nap-raising process, and the nap has a pile length of 3 mm or more and 6 mm or less.

[0003] JP 2024-025243 A

[0004] The invention described in Patent Document 1 is a warp knitted fabric, and while it is possible to increase heat retention by lengthening the sinker loops of the raised polyester yarn, the moisture content of the fabric was not high, and the moisture retention was insufficient. Furthermore, in weft knitting, which is a mainstream method of underwear production alongside warp knitting, knitting a knitted fabric structure that lengthens the sinker loops is difficult, and yarns knitted to lengthen the sinker loops tend to protrude from the sinker loop surface of the knitted fabric, creating unevenness that irritates the skin, resulting in insufficient smoothness and a poor feel. Furthermore, to prevent dry skin, fabrics using yarns with a high official moisture regain, such as cupra, are required. However, using yarns with a high official moisture regain not only increases the thermal conductivity of the entire fabric, reducing heat retention, but also reducing quick-drying properties and making the fabric more susceptible to chills from sweat. Therefore, it has been difficult to obtain a weft knitted fabric that combines high heat retention and quick-drying properties even when using yarns with a high official moisture regain.

[0005] In view of the problems of the conventional technology described above, the problem that the present invention aims to solve is to provide a weft knitted fabric that has excellent heat retention and quick-drying properties and has high smoothness on the skin side, without any restrictions on the type of yarn.

[0006] As a result of extensive research and experimentation to solve the above-mentioned problems, the inventors of the present application unexpectedly found that the problems could be solved by the following configuration, and have completed the present invention. That is, the present invention is as follows: [1] A knitting garment comprising a non-elastic yarn and an elastic yarn in one of its courses, consisting of course A and course B, wherein course A consists only of one or more knits and one or more tucks, and course B consists only of one or more knits and one or more welts, wherein an "A course group" consisting of 1 to 3 courses A consecutively knitted in the knitting end direction with the same weft and a "B course group" consisting of 1 to 3 courses B consecutively knitted in the knitting end direction with the same weft are repeated in the knitting end direction in the order of course group A and course group B, all tucks in course A are knitted continuously on the same wale as the welts of course B knitted continuously in the knitting end direction, and in course A group, the maximum number of knit loops (C ＭＡＸ ) are 1 to 6 stitches, and the tuck (T １ ) and the tuck at the beginning of the next course A (T ２ The maximum number of knit loops (W ＭＡＸ [2] A single weft knitted fabric containing inelastic yarn and containing elastic yarn in any course, which is repeated in the knitting end direction from course A to course B, said course A consisting of only one or more knits and one or more tucks, said course B consisting of only one or more knits and one or more welts, all of the tucks in said course A being knitted continuously on the same wale as the welts of said course B knitted continuously in the knitting end direction, and in course A, the maximum number of knit loops (C ＭＡＸ ) is 1 to 4 stitches, and the tuck (T １ ) and the tuck at the end of the next knitting (T ２ The maximum number of knit loops (W ＭＡＸ ) is 1 to 6 stitches. [3] The W ＭＡＸ : C ＭＡＸ[4] The single weft knitted fabric according to any one of the above [1] to [3], wherein the course B contains an elastic yarn. [5] The single weft knitted fabric according to any one of the above [1] to [4], wherein the elastic yarn is a bare yarn. [6] The single weft knitted fabric according to any one of the above [1] to [5], wherein the maximum yarn length of the non-elastic yarn constituting the course A is 320 mm / 100 w or less. [7] The yarn length (L Ａ ) and the yarn length (L Ｂ ) in which L Ｂ / L Ａ [8] A textile product comprising the single weft knitted fabric according to any one of [1] to [7], wherein the value of the single weft knitted fabric is 0.50 or more and 1.15 or less.

[0007] The weft knitted fabric according to the present invention has excellent heat retention and quick-drying properties, and is highly smooth on the skin side, making it suitable for use in textile products that require comfort.

[0008] FIG. 1 is an explanatory diagram of a knit structure. FIG. 2 is an explanatory diagram of a tuck structure. FIG. 3 is an explanatory diagram of a welt structure. FIG. 4 is a diagram of a needle loop surface in an example (another embodiment) of a weft knitted fabric of the present invention. FIG. 5 is a diagram of a sinker loop surface in an example (another embodiment) of a weft knitted fabric of the present invention. FIG. 6 is an explanatory diagram of the correspondence between a knitting structure diagram of an example (another embodiment) of a weft knitted fabric of the present invention and notations in a table corresponding to the knitting structure. FIG. 7 is an explanatory diagram of the correspondence between a knitting structure diagram of an example (one embodiment) of a weft knitted fabric of the present invention and notations in a table corresponding to the knitting structure. FIG.

[0009] Hereinafter, embodiments of the present invention will be described in detail.

[0010] In this specification, a "course" (hereinafter abbreviated as (C)) refers to a row of stitches that continue in the weft direction of the knitted fabric, and a "wale" (hereinafter abbreviated as (W)) refers to a row of stitches that continue in the warp direction of the knitted fabric.

[0011] In this specification, the term "needle loop surface" refers to a surface formed of needle loops, which are the peaks of the loops, and is synonymous with the technical face (TF) (the front side of the paper in Figures 1 to 4).

[0012] In this specification, the term "sinker loop surface" refers to the surface formed by the sinker loop, which is the valley of the loop, and is synonymous with the technical back (TB) (the back side of the pages in Figures 1 to 4, and the front side of the pages in Figures 5 and 8).

[0013] In a knit structure (hereinafter simply referred to as "knit" and abbreviated as (K)), a stitch made by retracting a knitting needle, as shown by the white line in Figure 1, becomes a needle loop (NL). In a tuck structure (hereinafter simply referred to as "tuck" and abbreviated as (T)), a stitch made by retracting a knitting needle, as shown by the white line in Figure 2, becomes a needle loop. In a welt (miss) structure (hereinafter simply referred to as "welt" and abbreviated as (W)), the yarn does not catch on the needle, as shown by the diagonal line in Figure 3, so there are no needle loops, and the yarn passes between adjacent needle loops in the same course, so all become sinker loops (SL).

[0014] In this specification, the term "non-elastic yarn" refers to a fiber having a maximum elongation of less than 100%.

[0015] In this specification, the term "elastic yarn" refers to a fiber having a maximum elongation of 100% or more.

[0016] In this specification, one complete structure refers to the smallest repeating unit of the knit structure that constitutes the knitted fabric.

[0017] One embodiment of the present invention is a knitting garment comprising a knitting end direction in which an inelastic yarn is contained and an elastic yarn is contained in any of the courses, the knitting end direction in which an "A course group" consisting of 1 to 3 courses A consecutively knitted in the knitting end direction with the same structure and a "B course group" consisting of 1 to 3 courses B consecutively knitted in the knitting end direction with the same structure are repeated in the knitting end direction in the order of the A course group and the B course group, all of the tucks in the course A group are knitted continuously on the same wale as the welts of the course B group knitted continuously in the knitting end direction, and in the course A group, the maximum number of knit loops (C ＭＡＸ ) are 1 to 6 stitches, and the tuck (T １ ) and the tuck at the beginning of the next course A (T ２ The maximum number of knit loops (W ＭＡＸ ) is a single weft knitted fabric with 1 to 8 stitches.

[0018] Another embodiment of the present invention is a knitting machine that includes a non-elastic yarn and an elastic yarn in any course, and is repeated in the knitting end direction from course A to course B, in which course A consists of only one or more knits and one or more tucks, and course B consists of only one or more knits and one or more welts, and all the tucks in course A are knitted continuously on the same wale as the welts of course B that are knitted continuously in the knitting end direction, and in course A, the maximum number of knit loops (C ＭＡＸ ) is 1 to 4 stitches, and the tuck (T １ ) and the tuck at the end of the next knitting (T ２ The maximum number of knit loops (W ＭＡＸ ) is a single weft knitted fabric with 1st to 6th stitches.

[0019] Hereinafter, the first embodiment and the other embodiments described above will be collectively referred to as “the present embodiment.” Note that the first embodiment and the other embodiments described above have a relationship of higher and lower concepts.

[0020] <Course A> In the weft knitted fabric of this embodiment, course A is characterized by consisting of only one or more knits and one or more tucks. In the first embodiment described above, course A is characterized by having an "A course group" which has a structure in which 1 to 3 courses are continuous in the knitting end direction with the same weave arrangement.

[0021] <Course B> In the weft knitted fabric of this embodiment, course B is characterized by consisting of only one or more knits and one or more welts. In the first embodiment described above, course B is characterized by having a "B course group" which has a structure in which 1 to 3 courses are continuous in the knitting end direction with the same weave arrangement.

[0022] <Warmth-retaining structure> The weft knitted fabric of this embodiment is characterized in that all the tucks in the group of courses A are knitted continuously on the same wale as the welts in the group of courses B, which are knitted continuously in the knitting end direction. As a result, on the sinker loop surface, the "tucks (T Ａ ")" is "the tack (T Ａ ) the sinker loop of the stitch (N Ｓ ")" is projected onto the sinker loop surface, and the sinker loop (N Ｓ ) on the same wale as the tuck, the welt (W Ｂ ) yarn is knitted, resulting in a three-dimensional structure (see the dotted line frame in Figure 5). Figure 8 shows an example of a heat-retaining structure composed of a course A group consisting of two consecutive courses A in the same weave arrangement and a course B group consisting of two consecutive courses B in the same weave arrangement. Even in this example, on the sinker loop surface, the "tuck group (T Ａ１ and T Ａ２ ")" is "the tack group (T Ａ１ and T Ａ２ ) the sinker loop of the stitch (N Ｓ")" is projected onto the sinker loop surface, and the sinker loop (N Ｓ ) on which the welt (W) of the group of courses B knitted continuously on the same wale as the tuck is Ｂ１ and W Ｂ２ ) yarn is knitted to form a three-dimensional structure (see the dotted line frame in FIG. 8). Ｂ ) is a tuck (T Ａ ) and the sinker loop (N Ｓ ) overlapping each other is referred to as the "heat-retaining structure" (within the dotted line frames in Figures 5 and 8). As a result, a structure is formed that maintains thickness despite being a single weft knitted fabric. This structure makes it possible to obtain a knitted fabric with high heat-retaining properties while maintaining the light weight of a single weft knitted fabric.

[0023] In a knitted fabric containing elastic yarn, the inclusion of the elastic yarn results in smaller stitches and a higher yarn filling rate in the fabric, which in turn results in a relatively smaller air layer and a lower heat retention rate. The knitted fabric of this embodiment has the heat retention structure described above, but by including elastic yarn in one of the courses, the knitted fabric as a whole is contracted by the elastic yarn, while the non-elastic yarn in course A or course B is prevented from buckling and becoming bulky, preventing the filling rate from increasing. This makes it possible to achieve a high heat retention rate while imparting stretchability due to the elastic yarn.

[0024] Furthermore, in the knitted fabric of this embodiment, the inelastic yarn of course B is knitted in a straight line along the fabric course direction by the welt structure, which allows moisture in the fabric to quickly diffuse and dry in the fabric course direction, resulting in excellent quick-drying properties. Therefore, it is possible to prevent chills caused by sweating during exercise, etc., and a knitted fabric suitable for wearing in cold environments is obtained.

[0025] <C ＭＡＸ In the weft knitted fabric of this embodiment, in course A, the maximum number of knit loops present between adjacent tucks knitted on the same course (C ＭＡＸ) are 1 to 6 stitches (Figs. 6 and 7). An example of "knit loops existing between adjacent tucks knitted on the same course in course A" in this embodiment is shown below. That is, in course A, when knitting is performed in the same course as "tuck A, knit, tuck B, knit, knit, tuck C, knit, → repeat to tuck A" in the course direction, one knit stitch is included between tuck A and the adjacent tuck B, and two knit stitches are included between tuck B and the adjacent tuck C. Also, one knit stitch is included between tuck C and the adjacent tuck A due to the repeat. In the case of the course shown in the above example, "the maximum number of knit loops existing between adjacent tucks knitted on the same course in course A" is 2 stitches. In the knitted fabric of this embodiment, the "maximum number of knit loops existing between adjacent tucks knitted on the same course in course A" is 2 stitches for each course A in one complete design, which is the minimum repeating unit of the knitted fabric structure. Ｋ )) and C Ｋ The largest number of stitches is C ＭＡＸ And C ＭＡＸ The characteristic of this method is that the stitch count is 1 to 6 (Fig. 6, Fig. 7). ＭＡＸ By setting the number of stitches in the range of 1 to 6, the distance between the heat-retaining structures is reduced and the heat-retaining structures are densely arranged in the knitting course direction. This allows the fabric to have sufficient thickness without having a structure with long sinker loops like warp knits, making it possible to obtain excellent heat retention even with a single weft knitted fabric.

[0026] <W ＭＡＸ In the weft knitted fabric of this embodiment, in the wale direction of the knitted fabric, a tuck (T １ ) and the tuck at the beginning of the next course A (T ２ The maximum number of knit loops (W ＭＡＸ) is a single weft knitted fabric with 1 to 8 stitches. Figure 6 shows a knitted fabric structure where course A and course B are each composed of one course (Figures 6 and 7). The welt does not form a knit loop, so it is not counted as a loop. In other words, in a knitted fabric structure where course A and course B are each composed of one course, a "tuck T" is formed on a certain wale from the knitting start side to the knitting end side on the same wale. １ , knit, knit, tuck T ２ , knit, knit, → Tuck T １ If the tuck T is knitted in the same wale as "Repeat to" in the wale direction, １ and Tuck T ２ In the case of the wale shown in the example above, two knit loops are knitted between the two wales. In the course A group, the tuck (T １ ) and the tuck at the beginning of the next course A (T ２ In the case of a knitted fabric structure in which course A and course B are each composed of two courses, the maximum number of knit loops between the first tuck T of course A group is two. １ , tuck at the end of knitting, knit, knit, knit, knit, tuck T at the very beginning of knitting in the adjacent course A group ２ , tuck at the end of knitting, knit, knit, knit, knit → tuck T １ If the tuck T is knitted in the same wale as "Repeat to" in the wale direction, １ and Tuck T ２ In the case of the wale shown in the above example, the "maximum number of knit loops existing between the tuck (T1) closest to the knitting start side knitted on the same wale in the course A group and the tuck (T2) closest to the knitting start side of the adjacent course A group" is 4 (see FIG. 7). ＭＡＸis 1 to 8 stitches. By being in this range, the distance between the heat-retaining structures is small, and the heat-retaining structures are densely arranged in the wale direction of the knitted fabric. As a result, the thickness of the fabric can be sufficiently ensured without having long sinker loops like in warp knitted fabrics, making it possible to obtain excellent heat retention even with a single weft knitted fabric. Furthermore, by being in this range, the spacing between the heat-retaining structures is dense, which prevents the formation of unevenness on the sinker loop surface, resulting in a knitted fabric with excellent smoothness.

[0027] In the weft knitted fabric of this embodiment, C ＭＡＸ and W ＭＡＸ By being in the above range, the distribution of the heat-retaining structure in the knitted fabric is not uneven, so the smoothness of the sinker loop surface is improved, which leads to maintaining the heat-retaining property and the smoothness of the skin surface. ＭＡＸ : C ＭＡＸ The ratio is preferably in the range of 4:1 to 2:1, more preferably 3:1 to 2:1, and most preferably 2:1.

[0028] The knitted fabric of this embodiment is characterized by being a single weft knitted fabric. A single weft knitted fabric refers to a knitted fabric knitted on a single weft knitting machine, and is a single-layer knitted fabric having a needle loop surface and a sinker loop surface. Because the knitted fabric of this embodiment is a single weft knitted fabric, it is possible to form a knitted fabric structure with excellent heat retention and smoothness with the minimum necessary amount of yarn, while reducing the fabric weight, making it possible to obtain a knitted fabric that is comfortable to wear in cold environments.

[0029] It is preferable that elastic yarn is included in course B. In course B, the welt has few contact points with other yarns on the sinker loop surface, giving the yarn a high degree of freedom, so including elastic yarn in course B allows the elastic yarn to fully exhibit its stretchability and improves stretch recovery. Furthermore, the stretch of the elastic yarn causes the non-elastic yarn in course B to buckle, and the course density of the knitted fabric increases, so that the non-elastic yarn of the welt is stably positioned on the tucks in the heat-retaining structure, increasing the thickness and resulting in a fabric with excellent heat retention.

[0030] The weft knitted fabric of this embodiment can include, as elastic yarn, bare yarn (bare yarn) that is not covered by non-elastic yarn, or covering yarn in which bare yarn is covered by non-elastic yarn, but from the viewpoint of increasing the smoothness of the back surface of the fabric, bare yarn (bare yarn) is preferred.

[0031] Furthermore, by using bare yarn as the elastic yarn, the deformation of the inelastic yarn that is knitted together is not hindered, thereby improving the stretch recovery properties of the fabric and making it more comfortable to wear. In the knitted fabric of this embodiment, it is important that the inelastic yarn recovers and returns to its original structure even after repeated stretching, and improving the stretch recovery properties of the fabric is also important from the perspective of maintaining heat retention during long-term use, so the use of bare yarn is preferable. Furthermore, a weft knitted fabric using bare yarn as the elastic yarn is less likely to retain moisture around the elastic yarn, allowing the knitted fabric to dry more quickly and making it more comfortable to wear.

[0032] In the weft knitted fabric of this embodiment, the maximum yarn length of the inelastic yarn constituting course A is preferably 320 mm / 100 w (wale) or less. In the knitted fabric of this embodiment, the "maximum yarn length of the inelastic yarn constituting course A" refers to the longest yarn length among the yarn lengths of the inelastic yarns in each course A, measured for each course A in one complete design, which is the smallest repeating unit of the knitted fabric structure. By having the maximum yarn length of the inelastic yarn constituting course A be 320 mm / 100 w or less, the position of the tuck that supports the inelastic yarn of course B in the heat-retaining structure is stabilized, and it is also possible to prevent the inelastic yarn of course B from protruding more than necessary into the sinker loop surface, which is preferable for achieving both smoothness against the skin and heat retention in a single weft knitted fabric.

[0033] In the weft knitted fabric of this embodiment, the yarn length of the inelastic yarn in course A (L Ａ ) and the yarn length (L Ｂ ) in which L Ｂ / L ＡWhen the same course A group and the same course B group each consist of a plurality of courses, the yarn length of the course A closest to the knitting start side is (L Ａ ) and the length of the yarn for course B on the starting side of knitting (L Ｂ The length of the non-elastic yarn in course A and course B varies depending on the fineness of the non-elastic yarn used and the design concept, so the L of two adjacent courses Ｂ / L Ａ In the weft knitted fabric of this embodiment, L may change for each pair of course A and course B. In the weft knitted fabric of this embodiment, L may change for each pair of course A and course B knitted adjacent to the course A in the knitting end direction. Ｂ / L Ａ is in the range of 0.50 to 1.15. Ｂ / L Ａ When the L is 0.50 or more, the position of the tuck in course A that supports the inelastic yarn in course B in the heat-retaining structure is stabilized, and in addition, the sizes of the needle loops in course A and course B become similar, and the needle loops stretch and recover in a balanced manner, so that a knitted fabric excellent in stretch recovery can be obtained. Ｂ / L Ａ When the L is 1.15 or less, the position of the sinker loop of course B is stabilized in the heat-retaining structure, and in addition, the non-elastic yarn of course B is prevented from protruding more than necessary onto the sinker loop surface, which is preferable in terms of achieving both smoothness of the skin surface and heat retention in a single weft knitted fabric. Ｂ / L Ａ The method for adjusting the ratio to 0.50 to 1.15 is not particularly limited, but examples thereof include reducing the length of the inelastic yarn in course A and increasing the number of knits in course B.

[0034] The weft knitted fabric of this embodiment may include an "insertion knit." The insertion knit is a structure consisting of only tucks and welts and does not form knit loops, so any yarn can be knitted in without impairing the heat-retaining structure of the present application.

[0035] <Non-elastic Yarn> The non-elastic yarn contained in the weft knitted fabric of this embodiment can be natural fibers, synthetic fibers, regenerated (purified) cellulose fibers, etc. Examples of natural fibers include cotton, linen, silk, wool, etc. 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. These can be selected as bright yarns, semi-dull yarns, full-dull yarns, etc., and the cross-sectional shape of the fiber can be any cross-sectional shape such as round, oval, W-shaped, cocoon-shaped, hollow yarn, etc. The fiber form is not particularly limited and can be raw yarn or crimped yarn such as false twist. Examples of regenerated (purified) cellulose fibers include rayon, cupra, lyocell, etc. Examples of regenerated (purified) cellulose fibers include single yarns such as raw yarns or twisted yarns, and can also be in the form of composite yarns with synthetic fibers as exemplified below.

[0036] The form of the composite yarn of regenerated (purified) cellulose fiber and synthetic fiber is not particularly limited, and a composite method such as interlacing or plying / twisting may be selected depending on the intended use. The fineness of the composite yarn of cellulose fiber and synthetic fiber is preferably 19 to 90 dtex. By setting the fineness of the composite yarn of regenerated (purified) cellulose fiber and synthetic fiber within the above range, it is easy to obtain a lightweight knitted fabric that has excellent heat retention while maintaining the moisture content in the fabric and is excellent for wearing in cold environments.

[0037] <Elastic Yarn> The weft knitted fabric of this embodiment includes an elastic yarn in one of the courses, preferably in course B. While the knitted fabric of this embodiment has the heat-retaining structure described above, the inclusion of an elastic yarn in one of the courses allows the entire knitted fabric to shrink due to the elastic yarn, while preventing the non-elastic yarn in course A or course B from buckling and becoming bulky, thereby increasing the filling rate. This makes it possible to achieve a high heat retention rate while providing stretchability due to the elastic yarn. The material and spinning method of the elastic yarn are not particularly limited, and polyurethane-based or polyetherester-based elastic yarns can be used. For example, dry-spun or melt-spun elastic yarns can be used. It is preferable that the elastic yarn does not lose its stretchability at temperatures around 180°C, which is the normal processing temperature for the presetting process during dyeing. The elastic yarn may contain functionalizing agents such as special polymers or inorganic substances to impart desired functionality, such as high settability, deodorizing properties, or antibacterial properties. The fineness of the elastic yarn is preferably 9 to 155 dtex, and more preferably 15 to 80 dtex from the perspective of ease of weft knitted fabric production. When a covering yarn is used as the elastic yarn, a single covered yarn (SCY) or a double covered yarn (DCY) can be used as the covering yarn, and the total fineness of the covering yarn is preferably 20 to 200 dtex, and from the viewpoint of ease of knitted fabric production, it is more preferably 30 to 155 dtex.

[0038] <Other preferred aspects> In the weft knitted fabric of this embodiment, it is preferable that the number of consecutive wales that do not contain a tuck in one complete design is 2 or less. In order to arrange the heat-retaining structure more densely, it is preferable that the wales that do not contain a tuck are not consecutive, and it is even more preferable that there are no wales that do not contain a tuck.

[0039] In the weft knitted fabric of this embodiment, the inelastic yarn of course A is not particularly limited, but it is preferable to use a yarn having a smaller fineness than the total fineness of the inelastic yarns used in course B adjacent to it in the knitting end direction. This not only makes it difficult for the tucks of course A to be exposed to the sinker loop surface when a heat-retaining structure is formed, improving the smoothness of the sinker loop surface, but also makes it possible to prevent the inelastic yarn of course B from protruding more than necessary onto the sinker loop surface, which is preferable for achieving both smoothness against the skin and heat retention in a single weft knitted fabric.

[0040] In the weft knitted fabric of this embodiment, the inelastic yarn of course B is not particularly limited, but it is preferable to align and knit two or more inelastic yarns. By knitting two or more inelastic yarns in course B, not only do the tuck and the welt made of the two inelastic yarns create an air layer within the heat-retaining structure, but an air layer is also formed between the two inelastic yarns that make up the welt, making it possible to obtain a knitted fabric with a high heat retention rate even when using yarn with a small fineness.

[0041] In the weft knitted fabric of this embodiment, the stitch density in the warp direction of the fabric is preferably 55 courses / inch (2.54 cm) or more, and more preferably 60 courses / inch or more. In addition, in the weft knitted fabric of this embodiment, the stitch density in the warp direction of the fabric is preferably 45 wales / inch or more, and more preferably 50 wales / inch or more. By having the stitch densities in the warp and weft directions each be equal to or greater than the above densities, the density between the heat-retaining structures is increased, improving smoothness.

[0042] The knitted fabric of this embodiment has a stretch recovery rate in the warp direction and / or weft direction of the knitted fabric of preferably 65% ​​or more, more preferably 75% or more, and even more preferably 85% or more. If the stretch recovery rate in the warp direction and / or weft direction is 65% or more, when made into clothing, it can maintain its shape even after repeated wearing, which leads to an extension of the product life.

[0043] The weight of the weft knitted fabric of this embodiment is preferably 90 g / m ２ 250g / m or more ２ or less, more preferably 100 g / m２ ~230g / m ２ The basis weight is 90 g / m ２ If the weight is 250 g / m or more, it is possible to ensure a sufficient heat retention rate even when worn in a cold environment, and the knitted fabric is preferable for actual wear. ２ If the thickness is below this, the knitted fabric will not be too thick and sweating due to excessive heat retention can be prevented, making it suitable for preventing chills caused by sweat.

[0044] The thickness of the weft knitted fabric of this embodiment is preferably 0.40 mm or more and 2.00 mm or less, more preferably 0.50 mm to 1.50 mm. If the thickness is 0.40 mm or more, it is possible to ensure a sufficient heat retention rate even when worn in cold environments, and if the thickness is 2.00 mm or less, the knitted fabric will not be too thick and sweating due to excessive heat retention can be prevented, resulting in a knitted fabric suitable for preventing chills caused by sweat.

[0045] The knitting machine used to obtain the weft knitted fabric of this embodiment is not particularly limited, and the gauge of the knitting machine can be selected as desired, but it is preferable to use a knitting machine with a gauge of about 24 to 60. With a knitting machine with a gauge of 24 to 60, it is possible to use yarn with a fineness suitable for improving heat retention, while increasing the stitch density to precisely arrange the heat-retaining structure, making it possible to obtain a knitted fabric with excellent heat retention and smoothness.

[0046] 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 improves bending flexibility and reduces friction between stitches, thereby imparting soft stretch and recovery.

[0047] <Applications> The weft knitted fabric of this embodiment has excellent heat retention and quick-drying properties, and is highly smooth on the skin side, so it can be suitably used for textile products that come into direct contact with the skin and are used in cold environments, such as shirts, innerwear, bottomwear, jackets, masks, etc., and is particularly suitable for use as innerwear.

[0048] The present invention will be specifically described below with reference to examples. Of course, the present invention is not limited to these examples. The methods for measuring the characteristic values ​​used in the examples are shown 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 use is not limited to clothing.

[0049] (1) Weight (g / m ２ The weight per unit area 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.

[0050] (2) Thickness (mm) The thickness of the knitted fabric is measured at five arbitrary positions on the knitted fabric using a thickness meter "DG-257" manufactured by Ozaki Seisakusho Co., Ltd., and the average value of the five positions is calculated.

[0051] (3) Quick-drying property (water retention rate (%) after 60 minutes) A ​​knitted fabric cut to 15 cm x 15 cm was used as a test specimen. The amount of load fabric was adjusted so that the total weight of one test specimen and a load fabric conforming to JIS L 1930 Annex H Type III was 1.0 kg. The test specimen and the load fabric were washed together in a domestic washing machine at 40°C for 15 minutes x 10 times, and then the test specimen was dried flat. The test specimen was conditioned for 24 hours in an environment of 20°C and relative humidity 65%. Under the same environment, the mass (W ｃ ) is measured, and then the above-mentioned humidity-conditioned test piece is placed in a cup, and the mass (W ｃ＋ｔ Next, 300 μl of pure water is dropped onto the surface of the dough sinker loop using a micropipette, and the mass (W ｃ＋ｔ＋ｗ ) and record the mass of the dropped water (W ｗ ) into the following formula: W ｗ =W ｃ＋ｔ＋ｗ -W ｃ＋ｔCalculated from.

[0052] Next, the dough was left in the cup for 60 minutes, and after the dough was dried, the weight of the cup and the dough (W ｃ＋ｔ The remaining water rate after 60 minutes (%) = (W ｃ＋ｔ ´-W ｃ＋ｔ ) / W ｗ The moisture remaining rate after 60 minutes is calculated by multiplying the moisture remaining rate after 60 minutes by 100. The smaller the moisture remaining rate after 60 minutes, the more quick-drying the knitted fabric is, and it is preferable that the moisture remaining rate after 60 minutes is 30.0% or less.

[0053] (4) Loop Length In any one complete knitted fabric, for all courses in that complete knitted fabric, an area equivalent to 100 wales in each course is cut and unraveled, and each yarn is extracted and measured for its length in a standard environment of 20°C and 65% humidity using the following method. Yarn with an elongation of less than 100%: One end of the unraveled non-elastic yarn is fixed and hung, and a predetermined 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 in mm / 100w. Note that for composite yarns of non-elastic yarn and elastic yarn, the loop length is measured using this method. <Predetermined load according to yarn type> Synthetic fiber stretch bulky yarn, composite yarn of non-elastic yarn and elastic yarn: 8.82 mN / dtex Other non-elastic yarns: 2.94 mN / dtex Elastic yarn: One end of the unraveled elastic yarn is fixed and hung, and the elastic yarn is confirmed to be approximately straight, and the length is measured in that state. The unit is expressed as mm / 100w.

[0054] (5) Elongation rate (%), elongation recovery rate (%) The elongation rate and recovery rate in the warp direction (wale direction) and weft direction (course direction) of the knitted fabric are measured according to JIS-L1096-8.16.2-B-1 method (constant load method). The load is 14.7 N.

[0055] (6) SMD in the warp direction of the sinker loop surface An automated surface tester (Kato Tech Co., Ltd. "KES-FB4-AUTO-A") is used to measure the mean standard deviation (SMD) of roughness in the warp direction of the sinker loop surface. First, a 20 cm square test piece is taken, and the unstretched test piece is placed on the tester so that the sinker loop surface is in contact with the contactor. The four corners of the test piece are fixed with double-sided tape to prevent the test piece from slipping during the test, and then the measurement is performed. Next, the contactor is brought into contact with the fabric with a force of 3 gf, and the test piece is moved at a speed of 1 mm / sec to measure the SMD in the warp direction of the fabric on the sinker loop surface of the test piece. Typically, when measuring SMD using this testing machine, the contactor moves back and forth between the grain and counter-grain directions, and the average SMD obtained from these movements is used. However, to prevent the fabric from being deformed when the contactor is folded back, which could affect the measurement value, in this example, only the SMD obtained from the forward movement is used. Measurements are taken in both the "with-grain" direction, where the fabric is oriented so that the forward movement of the contactor runs from the beginning of knitting to the end of knitting, and the "against-grain" direction, where the forward movement of the contactor runs from the end of knitting to the beginning of knitting. Measurements are taken three times in each direction, and the average is used as the SMD in the measurement direction. The higher of the "with-grain" and "against-grain" values ​​is used as the SMD in the warp direction of the fabric on the sinker loop surface. As knitted fabrics with enhanced heat retention, materials that create an air layer by increasing the sinker loop length, such as weft knitted fabrics and warp knitted fabrics using pile sinkers, are common, but these materials have protruding sinker loops that can catch on the skin when they come into contact with it and rub against it, causing irritation, which is particularly noticeable when rubbing in the warp direction of the fabric.If the unevenness when the friction element is moved in the warp direction of the fabric is small, the SMD value will be small and the fabric can be said to be less irritating to the skin.For thin innerwear worn in cold environments, if the SMD is 10.00 or less, irritation from the sinker loop surface will be less likely to be felt, and if the SMD is 5.00 or less, the knitted fabric will be so smooth that no irritation from the sinker loop surface will be felt at all, resulting in an excellent wearing comfort.

[0056] (7) Heat retention rate (%) A knitted fabric cut to 15 cm x 15 cm is conditioned in a 20°C x 65% humidity environment, and using a Kato Tech KES-F7-II, the knitted fabric is set so that the hot plate and the sinker loop surface of the knitted fabric face each other using the dry contact method for measuring heat retention. The measurement is performed at a hot plate temperature of 30°C and an air volume of 0.3 m / s, and the heat dissipation amount A when the fabric is set is determined. In addition, a similar measurement is performed without setting a test piece, the heat dissipation amount B of the blank is determined, and the heat retention rate (%) is calculated using the following formula: Heat retention rate (%) = (1 - heat dissipation amount A / heat dissipation amount B) x 100 For thin innerwear worn in cold environments, a heat retention rate of 20% or more is preferable.

[0057] (8) Fabric moisture content (%) The official moisture content (A) of each fiber is multiplied by the weight content (B) of each fiber in the fabric under an environment of 20°C and 65% relative humidity to calculate the "moisture content (C) of each material relative to the entire fabric," and the sum of (C) is taken as the fabric moisture content. For each fiber constituting the fabric, the "moisture content (C) of each material relative to the entire fabric" is calculated using the following formula, and the sum of (C) is taken as the fabric moisture content. Moisture content (C) of each material in the entire fabric = official moisture content (A) of each fiber x weight content (B) of each fiber in the fabric under standard conditions In this example, unless otherwise specified, the official moisture content is in accordance with "JIS L 0105:2020 General rules for physical testing methods for textile products, Table 1 - Official moisture content of fibers" shown below. Cotton: 8.5% Cupra: 11.0% Nylon: 4.5% Polyurethane: 1.0% Acrylic: 2.0% Modal: 11.0% Polyester: 0.4% For fibers using special polymers, calculations can be made based on the official moisture regain published by each company. For example, for a fabric composed of a weight ratio of 90% polyester and 10% polyurethane, the formula is as follows: C(Pet) = A x B = 0.4 x 0.9 = 0.36 C(Pu) = A x B = 1.0 x 0.1 = 0.10 Fabric moisture regain (%): C(Pet) + C(Pu) = 0.46 When the fabric is used as innerwear, a higher official moisture regain is preferable in terms of preventing dry skin, and a value of 4.5% or higher is preferable.

[0058] (9) Stitch density Weft stitch density: The number of needle loops per inch in the weft direction (course direction) of the knitted fabric is measured. Depending on the knitted fabric structure, the number of needle loops may differ for each course. In this case, the number of needle loops in the course with the largest number of needle loops is taken as the number of wales, and the unit is wales / inch (w / inch (2.54 cm)). Warp stitch density: The number of needle loops per inch in the warp direction (wale direction) of the knitted fabric is measured. In the case of a knitted fabric including a mesh portion, the number of needle loops may differ for each wale, and in this case, the number of needle loops in the wale with the largest number of needle loops is taken as the number of courses, and the unit is courses / inch (c / inch).

[0059] [Examples 1 to 8, Comparative Examples 1 to 3] Using a single knitting machine, knitted fabrics were obtained using the gauge, structure, and yarn usage shown in the tables below. The grey fabric was relaxed and scoured using 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 Evaphanol N-40 (Nicca Chemical Co., Ltd.), and finishing set was carried out at 170°C for 1 minute. Finally, the sinker loop surface of the fabric was raised using sandpaper #600 to produce a knitted fabric. The evaluation results are shown in Tables 1 to 3 below.

[0060] In Tables 1 to 3 below, Ny stands for nylon, Cu stands for cupro, Pet stands for polyester, Co stands for cotton, Ac stands for acrylic, Mo stands for modal, Pu stands for polyurethane elastic yarn, SCY stands for single covered yarn, K stands for knit, T stands for tuck, W stands for welt, and DTY stands for drawn textured yarn. Regarding continuous fibers, for example, 220 dtex 48f means a total fineness of 220 decitex and 48 filaments. Regarding staple fibers, for example, 26 / 1 (or 26 / -) means a 26 cotton count single yarn. Regarding blended yarns, for example, Ac / Mo 50:50 60 / 1 means a 60 count single yarn made of a 50:50 blend of acrylic and modal. Unless otherwise noted, bare polyurethane elastic yarns are used. The SCY used was a 44 dtex polyurethane elastic yarn stretched 3.0 times and wound with 33 dtex 36f polyester fiber at 500 T / m. "Course number" refers to the knitting order of the courses in a complete weave, with the course with the smaller course number being the starting course. "Needle number" refers to the arrangement of knitting needles in a complete weave, with knitting occurring sequentially from the smaller needle. When "1:Ny 2:Cu" is listed in the yarn usage section, it means that Ny and Cu are knitted together in that course. In Tables 1 to 3 below, only complete weave knitting structures are shown. When the table size is larger than a complete weave, weaves other than a complete weave are indicated with a "-". Items that are not applicable or cannot be measured are also indicated with a "-".

[0061]

[0062]

[0063]

[0064] The weft knitted fabric of the present invention has excellent heat retention and quick-drying properties and is highly smooth on the skin side, making it suitable for use in textile products that come into direct contact with the skin and are used in cold environments, such as shirts, innerwear, bottomwear, jackets, masks, etc., and is particularly suitable for use in innerwear.

[0065] NL Needle Loop SL Sinker Loop OL Old Loop N Knit T Tuck W Welt N Ｓ T Ａ Sinker loop of the stitch that has come out Ｂ Course B Welt T Ａ Tack C on Course A ＭＡＸ In the group of courses A, the maximum number of knit loops existing between adjacent tucks knitted on the same course W ＭＡＸ In the group of courses A, the maximum number of knit loops existing between the tuck (T1) knitted on the same wale at the knitting start side and the tuck (T2) knitted on the knitting start side of the adjacent group of courses A

Claims

1. A knitting garment comprising inelastic yarn and elastic yarn in one of the courses, consisting of course A and course B, course A consisting of only one or more knits and one or more tucks, course B consisting of only one or more knits and one or more welts, a "group of courses A" consisting of 1 to 3 courses A consecutively knitted in the knitting end direction with the same structure, and a "group of courses B" consisting of 1 to 3 courses B consecutively knitted in the knitting end direction with the same structure, are repeated in the knitting end direction in the order of course group A and course group B, all tucks in course group A are knitted continuously on the same wale as the welts of course group B knitted continuously in the knitting end direction, and in course group A, the maximum number of knit loops (C ＭＡＸ ) are 1 to 6 stitches, and the tuck (T １ ) and the tuck at the beginning of the adjacent course A group (T ２ The maximum number of knit loops (W ＭＡＸ ) is a single weft knitted fabric with 1 to 8 stitches.

2. A knitted garment containing inelastic yarn and elastic yarn in one of the courses, repeated in the knitting end direction from course A to course B, wherein course A consists of only one or more knits and one or more tucks, and course B consists of only one or more knits and one or more welts, and all tucks in course A are knitted continuously on the same wale as the welts of course B knitted continuously in the knitting end direction, and the maximum number of knit loops (C ＭＡＸ ) is 1 to 4 stitches, and the tuck (T １ ) and the tuck at the end of the next knitting (T ２ The maximum number of knit loops (W ＭＡＸ ) is a single weft knitted fabric with 1 to 6 stitches.

3. The above W ＭＡＸ : C ＭＡＸ 3. The single weft knitted fabric according to claim 1 or 2, which is knitted at a ratio of 1:2:

1.

4. A single weft knitted fabric according to claim 1 or 2, wherein course B contains elastic yarn.

5. A single weft knitted fabric according to claim 1 or 2, wherein the elastic yarn is bare yarn.

6. A single weft knitted fabric according to claim 1 or 2, wherein the maximum yarn length of the inelastic yarn constituting course A is 320 mm / 100 wt or less.

7. The length of the non-elastic yarn in course A (L Ａ ) and the yarn length (L Ｂ ) in which L Ｂ / L Ａ The single weft knitted fabric according to claim 1 or 2, wherein the value of the linearity is 0.50 or more and 1.15 or less.

8. A textile product comprising the single weft knitted fabric according to claim 1 or 2.

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