Knitted fabric

Abstract

The problem to be solved by the present invention is to provide a knitted fabric having high water droplet removability and excellent operational comfort and tactile sensation. A knitted fabric according to the present invention comprises a combined filament yarn having: a fiber A having a multi-lobed cross-section having a convex portion on the outer peripheral portion thereof; the cross section of the fiber B is flat, and the braided fabric meets the following necessary conditions. (1) the number of the convex parts of the fiber A is 6-30; and (2) the flatness of the fiber B is 1.1 to 5.0. And (3) the fineness of the fiber B is finer than that of the fiber A. And (4) curling the fiber B on the surface of the braided fabric. And (5) the fiber A and the fiber B are crimped fibers which contain two polymers and are of a bimetallic structure. And (6) coating a waterproof agent on the surface of the braided fabric.

Description

Technical Field

[0001] The present invention relates to a knitted fabric having high water droplet removal performance and excellent movement comfort and touch. Background Art

[0002] In the past, waterproof knitted fabrics were used for various purposes such as casual clothing, sportswear, uniforms, etc., and high waterproofness was required. Recently, from the perspective of adding value to these uses, not only waterproofness but also stretchability that provides a sense of touch and comfort when worn is required.

[0003] In order to impart water resistance to woven fabrics, the following method is widely used: a water-resistant treatment is implemented in which a water-resistant agent containing a fluorine-based resin, a silicone-based resin, or a paraffin-based resin is attached to the surface of the fabric. In recent years, out of consideration for the environment, a woven fabric using a non-fluorine-based (PFOA-free) water-resistant agent has been proposed. The non-fluorine-based (PFOA-free) water-resistant agent does not use compounds that may have an impact on organisms (e.g., perfluorooctanoic acid or perfluorooctane sulfonic acid, etc.). On the other hand, woven fabrics obtained with non-fluorine formulations cannot obtain sufficient water resistance in daily life. If an appropriate formulation is not used, the touch will become hard, so the application in casual clothing or sports clothing, which requires both water resistance and touch, is greatly limited.

[0004] As a method of improving waterproofness other than the method of attaching a waterproof agent to the surface of a fabric, there have been proposed so far schemes related to controlling the surface morphology of woven fabrics and making fibers with irregular cross-sections or composite yarns with the goal of a so-called lotus leaf effect (for example, Patent Document 1, Patent Document 2, Patent Document 3).

[0005] Prior art literature

[0006] Patent Literature

[0007] Patent Document 1: Japanese Patent Application Publication No. 2005-350828

[0008] Patent Document 2: Japanese Patent Application Publication No. 2015-098661

[0009] Patent Document 3: International Publication No. 2021 / 215319 Summary of the invention

[0010] Problems to be solved by the invention

[0011] However, the knitted fabrics described in Patent Documents 1 and 2 cannot obtain stretchability for following intense movements when wearing casual clothing or sportswear, and the comfort of movement is insufficient. The fabric described in Patent Document 3 has stretchability by including stretch fibers in the composite yarn, but on the other hand, non-curled fibers are recommended as the ultrafine fibers that are included together with the stretch fibers and form fine fiber loops, so the touch is insufficient. In view of this situation, it is required to develop a knitted fabric that can be used in various applications and has not only water drop removal properties but also comfort of movement and good touch.

[0012] An object of the present invention is to solve the problems of the prior art and to provide a knitted fabric having high water droplet removal performance and excellent movement comfort and touch.

[0013] Technical means of solving problems

[0014] In order to solve the above-mentioned problems, the present invention has the following configurations.

[0015] [1] A woven fabric comprising mixed yarns, wherein the mixed yarns have: a fiber A having a multi-lobed cross-section with a convex portion at the outer periphery; and a fiber B having a flat cross-section, wherein the woven fabric satisfies the following necessary conditions.

[0016] (1) The fiber A has 6 to 30 protrusions.

[0017] (2) The flatness of the fiber B is 1.1 to 5.0.

[0018] (3) Fiber B has a finer fineness than fiber A.

[0019] (4) The fibers B are curled on the surface of the woven fabric.

[0020] (5) Both the fiber A and the fiber B are curled fibers having a bimetallic structure comprising two polymers.

[0021] (6) A water-repellent agent is provided on the surface of the woven fabric.

[0022] [2] The woven fabric according to [1], wherein the angle at which water droplets slide off the surface of the fabric is 1 degree to 45 degrees.

[0023] [3] The woven fabric according to [2], wherein the angle at which water droplets fall off the surface of the fabric after repeated washing 20 times is 1 degree to 60 degrees.

[0024] [4] The knitted fabric according to any one of [1] to [3], wherein the elongation in the warp direction or the weft direction is 10% to 100%.

[0025] [5] The woven fabric according to any one of [1] to [4], wherein the fineness of the fiber A is 0.5 dtex to 5.0 dtex, and the fineness ratio represented by the fineness [dtex] of the fiber A / the fineness [dtex] of the fiber B is greater than 2.0.

[0026] [6] The knitted fabric according to any one of [1] to [5], wherein the fiber number ratio represented by the number of fibers B / the number of fibers A is 2 or more.

[0027] [7] The knitted fabric according to any one of [1] to [6], wherein the surface occupancy of the mixed yarn per unit area is 20% or more.

[0028] Effects of the Invention

[0029] According to the present invention, a knitted fabric having high water droplet removability and excellent movement comfort and touch can be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] [ Figure 1 ] is a schematic diagram of the fiber cross-sectional structure of the sea-island composite fiber produced in Example 1.

[0031] [ Figure 2 ] is a conceptual cross-sectional view of a composite die for producing the sea-island composite fiber used in Example 1.

[0032] [ Figure 3 ] is a schematic diagram of the cross-sectional structure of the mixed fiber yarn contained in the woven fabric of the present invention. DETAILED DESCRIPTION

[0033] Hereinafter, embodiments of the present invention will be described in detail.

[0034] The knitted fabric of the present invention is a knitted fabric with a water-repellent agent on the surface, comprising a mixed fiber yarn as a constituent yarn, wherein the mixed fiber yarn has: a fiber A, whose cross section is a multi-leaf shape with a convex portion on the outer periphery; and a fiber B, whose cross section is a flat shape and whose fineness is finer than the fiber A, wherein both the fiber A and the fiber B are crimped fibers having a bimetallic structure containing two polymers. According to the structure, the potential crimp is made obvious by heat treatment such as dyeing, thereby generating a crimp difference between the fiber A and the fiber B having a fine fineness difference. In addition, the fine crimp of the fiber B forms a lotus leaf-shaped concave-convex structure with a fine air layer on the surface of the knitted fabric, thereby obtaining excellent water drop removal. In addition, at the same time, due to the concave-convex effect of the bimetallic crimp and the crimp difference of the fiber A and the fiber B having a fine fineness difference, the knitted fabric also has excellent movement comfort and short fiber style touch. In addition, the concave-convex effect mentioned here refers to the concave-convex effect of the mixed fiber yarn itself, and refers to the result of the combination of the crimp with a large coarse fineness and the crimp with a fine fineness, and the concave-convex structure is formed on the surface of the mixed fiber yarn itself.

[0035] <Fiber A>

[0036] Fiber A is a crimped fiber having a multi-lobed cross section with convex portions on the outer periphery in a mixed yarn including fibers A and fibers B.

[0037] Examples of the polymer constituting the fiber A include melt-molded polymers such as polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate, polypropylene terephthalate, polypropylene, polyolefin, polycarbonate, polyacrylate, polyamide, polylactic acid, thermoplastic polyurethane, polyphenylene sulfide, and copolymers thereof, and polymers having a melting point of 165° C. or higher are preferred because of good heat resistance. In addition, plant-derived biopolymers or recycled polymers can also be used, and the polymers can be recycled polymers obtained by recycling by any of chemical recycling, material recycling, and thermal recycling.

[0038] The fiber A is a curly fiber in which two types of these polymers are compounded into a bimetallic structure (including a parallel type and an eccentric core-sheath type), and is a curly fiber in which the potential curling is made obvious by heat treatment such as dyeing. In the case where the fiber A is not a curly fiber with a bimetallic structure, there is no stretchability, and thus, when made into clothes, it is impossible to obtain movement comfort. In addition, by forming the fiber A into a bimetallic structure, the braid shrinks, and a difference is generated in the curling pitch of the fiber B described later, and a more effective air layer and concave-convex structure can be formed on the surface of the braid, and the water drop removal property and the touch of the staple style are further improved.

[0039] The fiber A may contain various additives such as inorganic substances such as titanium oxide, silicon dioxide, and barium oxide, colorants such as carbon black, dyes or pigments, flame retardants, fluorescent whitening agents, antioxidants, and ultraviolet absorbers in the polymer as needed.

[0040] The cross section of the fiber A is a multi-lobed shape with 6 to 30 convex parts on the periphery. By being a multi-lobed shape, not only a short-fiber-style touch is obtained, but also, as described later, the contact area between water droplets and the fiber surface can be effectively reduced in the relatively coarse fiber A, thereby obtaining a woven fabric with excellent water drop removal. In order to avoid deviations in water drop removal, the convex parts are preferably radially arranged uniformly on the periphery of the fiber surface. In the case where the convex parts are less than 6, the intervals between the convex parts become wider and the short-fiber-style touch cannot be obtained. From the perspective of increasing the contact area with water droplets and obtaining sufficient water drop removal, the convex parts are preferably more than 8. On the other hand, in the case where the convex parts exceed 30, not only are the convex parts easily broken under physical effects such as friction during wearing, causing fibrillation and resulting in reduced quality, but also the intervals between the convex parts formed on the periphery of the fiber surface become too fine and become a shape similar to a circular cross section, which reduces the effect of water drop removal. The convex parts are more preferably less than 15. The number of convex parts can be measured by the method described in the embodiment.

[0041] As described above, the fiber A has a relatively coarse fineness compared to the flat fiber B described later, and the fineness ratio of the fiber A to the fiber B represented by the following formula 1 is preferably 2.0 or more (more preferably 2.0 to 2000.0, particularly preferably 5.0 to 200.0). By having a fineness ratio of the fiber A to the fiber B of 2.0 or more, the fiber A and the fiber B are prone to curling differences, forming fine concave-convex and air layers on the surface of the woven fabric, thereby obtaining sufficient water drop removal and a short-fiber-style touch. The fineness ratio is more preferably 5.0 or more. On the other hand, by having a fineness ratio of the fiber A to the fiber B of 2000.0 or less, physical properties such as durability as a woven fabric can be fully satisfied. More preferably, it is 200.0 or less.

[0042] Fineness ratio = fineness of the fiber A [dtex] / fineness of the fiber B [dtex]

[0043] …(Formula 1).

[0044] The fineness of the fiber A is preferably 0.5 dtex to 5.0 dtex. When the fineness of the fiber A is 0.5 dtex or more, the fineness of the single yarn will not become too fine, and physical properties such as tearing or durability can be fully satisfied. The fineness of the fiber A is more preferably 1.0 dtex or more. On the other hand, when the fineness of the fiber A is 5.0 dtex or less, it is easy to obtain a difference in curling with the fiber B that is effective in removing water droplets, and the contact surface with water droplets becomes smaller, thereby obtaining higher water droplet removal. The fineness of the fiber A is more preferably 2.5 dtex or less. The fineness can be measured by the method described in the examples.

[0045] <Fiber B>

[0046] The fiber B is a crimped fiber having a flat cross-section in the mixed yarn including the fibers A and B.

[0047] Examples of polymers constituting fiber B include melt-molded polymers such as polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate, polypropylene terephthalate, polypropylene, polyolefin, polycarbonate, polyacrylate, polyamide, polylactic acid, thermoplastic polyurethane, and polyphenylene sulfide, and copolymers thereof. In particular, polymers having a melting point of 165° C. or higher are preferred because of their good heat resistance. In addition, plant-derived biopolymers or recycled polymers can also be used. For the polymer, recycled polymers obtained by recycling by any of chemical recycling, material recycling, and thermal recycling can be used.

[0048] The fiber B is a curly fiber in which two types of these polymers are compounded into a bimetallic structure (including a parallel type and an eccentric core-sheath type), and is a curly fiber in which the latent curliness is made apparent by heat treatment such as dyeing. In the case where the fiber B is not a curly fiber with a bimetallic structure, the fiber B does not have curliness and cannot obtain the short fiber-like touch described later. In addition, the water droplet removal property is further improved by the bimetallic structure of the fiber B.

[0049] The fiber B may contain various additives such as inorganic substances such as titanium oxide, silicon dioxide, and barium oxide, colorants such as carbon black, dyes or pigments, flame retardants, fluorescent whitening agents, antioxidants, and ultraviolet absorbers in the polymer as needed.

[0050] The cross section of the fiber B is a flat shape with a difference in length between the major axis direction and the minor axis direction of the cross section and a flatness of 1.1 to 5.0. By curling in the flat shape, not only is a short-fiber-style touch that reproduces the twisted structure of the cotton thread obtained, but the contact area between the water droplets and the fiber surface can be effectively reduced, thereby obtaining a woven fabric with excellent water drop removal properties. Here, the so-called "flatness" is a value obtained by calculating the flatness of the fiber B contained in one of the mixed fiber yarns extracted from the woven fabric of the present invention according to the following formula 2 and calculating the average value. When the flatness exceeds 5.0, the monofilament becomes too thin, which reduces the rebound feeling when the mixed fiber yarn is bent, and the short-fiber-style touch cannot be obtained. In addition, in order to suppress the reduction in the effect of water drop removal caused by the contact surface between the water droplets and the fiber surface becoming too sharp and unable to support the water droplets, the flatness is preferably less than 4.0. In addition, it is possible to suppress the quality reduction caused by fibrillation due to physical effects such as friction during wearing. On the other hand, if the flatness is less than 1.1, the fiber B has a shape that is extremely close to a circular cross section, and loses the effects of water droplet removal and a short-fiber-like touch.

[0051] Flatness = length of the cross section of the fiber B in the long axis direction [μm] / length of the cross section of the fiber B in the short axis direction [μm] (Formula 2).

[0052] As described above, the fiber B has a finer fineness than the fiber A, and in order to obtain a curl difference with the fiber A, the fineness ratio of the fiber A to the fiber B represented by the formula 1 is preferably 2.0 or more.

[0053] <Mixed Fiber>

[0054] The braid of the present invention comprises a mixed yarn having the fiber A and the fiber B, but may also comprise fibers other than the fiber A and the fiber B. In the case of fibers other than the fiber A and the fiber B, the type or shape thereof is not particularly limited. In addition, as described above, the fiber A and the fiber B are both crimped fibers of a bimetallic structure comprising two polymers. If a bimetallic wire comprising two polymers is used as the fiber other than the fiber A and the fiber B, each fiber is likely to show crimping when used in a braid, and therefore it is preferred.

[0055] The total fineness of the mixed yarn is preferably in the range of 10 dtex to 300 dtex (more preferably 20 dtex to 240 dtex, particularly preferably 30 dtex to 150 dtex).

[0056] The mixed yarn preferably has a root number ratio of 2 or more of the fiber A and the fiber B represented by the following formula 3. By having the root number ratio of 2 or more, the number of fibers B shown on the surface of the woven fabric increases, thereby obtaining a better short-fiber-style touch. In addition, since a fine air layer and a concave-convex structure based on the curl difference with the fiber A, which are effective for water repellency, are easily formed, a higher water drop removal property is obtained. The root number ratio is more preferably 5 or more. On the other hand, by making the root number ratio 50 or less, it is possible to suppress the obvious quality degradation such as fibrillation or pilling caused by the relatively fine fiber B shown on the surface of the woven fabric. The root number ratio is more preferably 15 or less.

[0057] Fiber number ratio = the number of fibers B / the number of fibers A (Formula 3).

[0058] The mixed yarn is particularly preferably untwisted to obtain the best difference in crimp between the fiber A and the fiber B, but may be twisted yarn having a twist coefficient of 35,000 or less as represented by the following formula 4 as required. In this case, the twist number is preferably within a range of 100 T / M to 2000 T / M.

[0059] Twist factor = twist number [T / M] × (fineness [de]) 1 / 2 …(Formula 4).

[0060] Here, fineness [de] = the value represented by fineness [dtex] × 0.9.

[0061] <Knitting>

[0062] The braided fabric in the present invention is a braided fabric containing the mixed fiber yarn, and has the curl of the fiber B on the surface of the braided fabric. Here, the so-called "curl" refers to a three-dimensional twisted structure (including coil-shaped) or ring structure obtained by false twisting or air processing (interlaced processing or taslan processing), a fiber of a bimetallic structure formed by bonding two polymers, etc., and is not particularly limited. In addition, if the fiber of the bimetallic structure formed by bonding two polymers is false twisted, the curl will become finer, so it is preferred. Through heat treatment such as dyeing, the potential curl of the fiber A and the fiber B of the bimetallic structure is obvious, so the braided fabric shrinks and a braided fabric with excellent stretchability for movement comfort can be obtained. In addition, at the same time, the fiber A and the fiber B with a difference in fineness produce a curl difference, and the fiber A and the fiber B spread out, thereby forming a space in the mixed fiber yarn, and the relatively fine curl of the fiber B forms a lotus leaf-shaped concave-convex structure with a fine air layer on the surface of the braided fabric, thereby obtaining excellent water drop removal. In addition, due to the fine uneven structure caused by the difference in crimp between the fiber A and the fiber B, a fine short-staple-like touch like extra-long cotton is obtained on the surface of the knitted fabric.

[0063] The greater the ratio of the mixed yarn contained in the woven fabric, the more stretchability based on the bimetallic structure can be obtained, thereby achieving more comfortable movement when made into clothes. In particular, the greater the ratio of the mixed yarn shown on the surface of the woven fabric, the more fine air layers and concave-convex structures are formed on the surface, and excellent water drop removability and a staple-like touch can be obtained. Therefore, in the woven fabric, the surface occupancy of the mixed yarn per unit area is preferably 20% or more (particularly preferably 100%). Here, the so-called "surface occupancy" refers to the proportion of the mixed yarn on the surface of the woven fabric. If it is above the ratio, for example, even when it is made into a woven fabric, the concave-convex structure of the mixed yarn that is effective for higher water drop removability and a better staple-like touch can be formed on the surface of the woven fabric, and higher comfort of movement can be achieved. As the fiber combined with the mixed yarn when making a woven fabric, a fiber that has been subjected to false twist processing or air processing (interlaced processing or taslan processing), a fiber with a bimetallic structure formed by bonding two polymers, or a combination of these fibers are preferred because they are less likely to hinder the stretchability or curling performance of the mixed yarn, and the touch of the staple style.

[0064] The organization of the knitted fabric of the present invention is not particularly limited, but preferably a woven fabric that can particularly obtain excellent water drop removal properties. In the case where the knitted fabric is a woven fabric, the woven organization is not particularly limited, and examples thereof include: plain weave, twill weave, satin weave, variable plain weave, variable twill weave, variable satin weave, fancy weave, jacquard weave, single-layer weave, double-layer organization, multi-layer organization, warp knitting pile weave, weft knitting pile weave, leno weave, etc. In addition, in the case where the knitted fabric is a knitted fabric, the knitting organization is not particularly limited, and examples thereof include: circular knitting, weft knitting, warp knitting (including tricot warp knitting, raschel warp knitting), pile weave, plain needle weave, plain weave, rib weave, double rib weave (double-sided knitting), rib weave, double reverse organization, bar warp plain organization (denbigh structure), warp pile organization (cord structure), warp knitting satin organization (atlas structure), chain organization, interlining organization, etc. Woven fabrics and knitted fabrics can be any structure, but compared with plain weave, twill structures that are prone to unevenness are more likely to shrink the mixed yarns and form fine air layers and uneven structures on the surface. In addition, when mixed with other raw yarns, it is ideal that the mixed yarns appear in large quantities on the surface.

[0065] The woven fabric preferably has a total cover factor (CF) of 1000 to 3500 for the warp and weft represented by the following formula 5. When the total cover factor (CF) is 1000 or more, the gaps formed at the tissue points are reduced, and excellent water drop removal can be obtained without water droplets falling into the gaps. The total cover factor (CF) is more preferably 1500 or more. On the other hand, as long as the total cover factor (CF) is 3500 or less, the fine air layer and concave-convex structure of the mixed fiber yarn will not be lost due to excessive restraint based on the tissue points, and excellent water drop removal, movement comfort, and short fiber style touch can be obtained. The total cover factor (CF) is more preferably 2800 or less.

[0066] CF = (total warp yarn fineness [de]) 1 / 2 × warp yarn weaving density [root / 2.54cm] + weft yarn total fineness [de]) 1 / 2 × weft yarn weaving density [root / 2.54cm]…(Formula 5).

[0067] Here, the total fineness of the warp yarn [de]=the value represented by the total fineness of the warp yarn [dtex]×0.9, and the total fineness of the weft yarn [de]=the value represented by the total fineness of the weft yarn [dtex]×0.9.

[0068] The woven fabric of the present invention has a water-repellent agent on the surface. The water-repellent agent on the surface mentioned here means that the woven fabric has substantially water-repellent properties, and examples thereof include the water droplet sliding angle on the fabric surface of the woven fabric being less than 90 degrees. Yarn with water-repellent properties can be used, and the woven fabric can also be given a water-repellent agent during dyeing. The type of water-repellent agent that imparts water droplet removability to the woven fabric is not particularly limited. From an environmental perspective, it is preferred to use a water-repellent agent with a perfluorooctanoic acid (PFOA) concentration of less than 5 ng / g (particularly preferably less than 1 ng / g) in a measurement using a high-performance liquid chromatography-mass spectrometer (LC-MS). The so-called water-repellent agent, for example, can be listed as a C6 water-repellent agent (also called a C6 series water-repellent agent, but referred to as a C6 water-repellent agent in the present invention) or a non-fluorine-based water-repellent agent, and from the perspective of recyclability, a non-fluorine-based water-repellent agent is particularly preferred.

[0069] The C6 water repellent refers to a fluorine-based water repellent containing a fluorine-based compound having a perfluoroalkyl group, wherein the carbon number of the perfluoroalkyl group is 6 or less. The perfluoroalkyl group refers to a group in which two or more hydrogen atoms of the alkyl group are substituted with fluorine atoms.

[0070] In addition, the so-called non-fluorine-based water-repellent refers to a water-repellent that does not contain a fluorine compound with a perfluoroalkyl group as the main component. As the non-fluorine-based water-repellent, silicone-based water-repellents, paraffin-based water-repellents, etc. can be listed. Regarding these water-repellents, silicone-based compounds can be the main component, and paraffin-based compounds can also be the main component.

[0071] The adhesion concentration of the water repellent is preferably 0.1 to 1% by mass (more preferably 0.2 to 0.8% by mass, particularly preferably 0.3 to 0.5% by mass) so as to obtain excellent water droplet removability without impairing the spun-fiber feel of the mixed yarn.

[0072] The woven fabric thus obtained contains the mixed yarn, and the fine curls of the fiber B form a concave-convex structure with a fine air layer on the surface of the woven fabric, thereby not only exhibiting excellent water droplet removability like a lotus leaf effect and a short fiber-like touch when water droplets fall on the surface of the woven fabric, but also exhibiting excellent movement comfort brought about by the bimetallic structure of the fiber A and the fiber B.

[0073] The water droplet sliding angle on the fabric surface of the woven fabric is preferably 1 degree to 45 degrees. As long as the water droplet sliding angle is less than 45 degrees, for example, when used for clothing, water droplets are not easy to remain on the woven fabric when worn, and excellent water droplet removal can be obtained without feeling discomfort such as wetness. In particular, as long as the water droplet sliding angle is less than 15 degrees, water droplets can be obtained. Extremely high water droplet removal can be obtained with almost no water droplets remaining on the woven fabric when worn. Here, the so-called "water droplet sliding angle" refers to the angle at which the water droplets begin to slide down when the water droplets are slowly dropped on the surface of the woven fabric installed in a flat shape on a horizontal plate, and the flat plate is slowly tilted at a constant speed. The smaller the water droplet sliding angle, the better the water droplet removal performance. The water droplet sliding angle is measured based on the following angle, that is, using a fully automatic contact angle meter (DM-SA, Kyowa Interface Science Co., Ltd.) to drop 20μL of water drops on the surface of the woven fabric, and slowly tilted at a constant speed from 0 degrees in units of 1 degree, the angle at which the water droplets completely slide off the surface of the woven fabric.

[0074] In addition, the water droplet sliding angle on the fabric surface of the woven fabric after repeated washing of the present invention is preferably 1 degree to 60 degrees, and more preferably 1 degree to 45 degrees. By setting the water droplet sliding angle after washing and drying to the above value, excellent water droplet removal without discomfort such as wetness can be obtained for a long time. In addition, the so-called repeated washing here refers to washing using the Japanese Industrial Standards (JIS) L1930: 2014-C4M method and drying using the A method (hanging drying) repeated 20 times.

[0075] In the knitted fabric of the present invention, when it is made into clothing, it is preferred that the knitted fabric follows various movements during wearing and is not easy to feel the pressure from the clothes of the knitted fabric, such as the feeling of compression or tightness, and exhibits excellent stretchability for comfortable movement. The knitted fabric of the present invention includes the mixed fiber yarn, and the mixed fiber yarn has the fiber A and the fiber B that show the curl caused by the bimetallic structure, so that the knitted fabric also has excellent stretchability for comfortable movement. As the stretchability, it is preferred that the elongation in the warp or weft direction of the knitted fabric is 10% to 100%. The so-called stretchability mentioned here is the elongation in the warp or weft direction of the knitted fabric measured by JIS L1096:2010 8.16.1B method or D method, and it is an indicator of excellent comfort in movement as the elongation is greater. When the elongation is 10% or more, the clothes pressure from the knitted fabric will not be strongly felt, and the movement during wearing will be rarely hindered. In particular, as long as the elongation is 20% or more, the clothes pressure from the knitted fabric will hardly be felt, and more excellent comfort in movement can be obtained. On the other hand, when the elongation is 100% or less, the elongation recovery can be prevented from being significantly reduced. In particular, when the elongation is 40% or less, the phenomenon of knee wear in clothing applications such as trousers is unlikely to occur.

[0076] <Knitted fabric manufacturing method>

[0077] Next, an example of a preferred method for producing the knitted fabric of the present invention will be described.

[0078] First, a mixed yarn is prepared by the following method. The mixed yarn includes: a fiber A having a multi-lobed cross section with convex portions on the outer periphery; and a fiber B having a flat cross section.

[0079] The manufacturing method of the mixed fiber yarn is not particularly limited. For example, the sea-island composite fiber with the fiber A and the fiber B as the island component can be mixed by dissolving the sea component through alkali reduction treatment during dyeing, or the fiber A and the fiber B can be aligned and air-mixed by air processing (interlaced processing or taslan processing). It is particularly preferred to use a method of using a sea-island composite fiber that can be mixed without deviation in the arrangement of the fiber A and the fiber B in the yarn bundle, because yarn processing such as air processing is not required, so it is also good from the perspective of productivity.

[0080] The weaving and knitting method of the knitted fabric containing the mixed fiber yarn of the present invention is not particularly limited, and it can be woven and knitted by a common method. When the knitted fabric is a woven fabric, for example, a water jet loom, an air jet loom, a rapier loom, a jacquard loom, etc. can be listed. In addition, when the knitted fabric is a knitted fabric, for example, a circular knitting machine, a warp knitting machine, etc. can be listed.

[0081] The knitted fabric obtained by the weaving method can then be scour and dyed by a common method. The latent curl of the fiber A and the fiber B with a difference in fineness is made apparent by the heat treatment of these processes, and a fine air layer and a concave-convex structure of the fiber B with a difference in curl are formed on the surface of the knitted fabric. When the sea component is dissolved from the sea-island composite fiber to produce the mixed fiber yarn, the following method is preferred: weaving and knitting are performed while the sea-island composite fiber is maintained, and the sea component is dissolved by alkali weight reduction treatment or the like after the scouring treatment, thereby producing a knitted fabric containing the mixed fiber yarn.

[0082] Waterproofing is performed in the braided fabric, but flame retardant, hygroscopic, antistatic, antibacterial, softening treatment, and other known post-processing (including resin coating, film lamination, various processings imparting other functions, etc.) can be used as needed, and the washing durability of functional processing agents such as these flame retardant, hygroscopic, antistatic, antibacterial, and softening treatment agents can also be improved. The waterproofing process includes padding, spraying, coating, etc., and is not particularly limited. Padding is preferably used in terms of making the processing agent penetrate into the braided fabric. On the other hand, when the braided fabric without using a yarn with waterproof performance is not waterproofed, water droplets easily invade the fine air layer on the surface of the mixed fiber yarn, so water droplet removal cannot be obtained.

[0083] Example

[0084] The knitted fabric of the present invention will be specifically described below with reference to the following examples, but the present invention is not limited thereto.

[0085] The following measurements and evaluations were performed on Examples and Comparative Examples.

[0086] A. Fineness

[0087] A-1 original yarn

[0088] About 1m of the original yarn was collected and the mass per unit length was measured in an environment with a temperature of 20°C and a humidity of 65% RH. The mass equivalent to 10,000m was calculated from the value. The measurement was repeated 10 times and the simple average value was rounded to the first decimal place as the fineness of each yarn.

[0089] A-2 Fiber A and fiber B constituting the knitted fabric

[0090] The fibers to be measured were collected from the woven fabric in a total length of about 1 m, and the mass per unit length was measured in an environment of temperature 20°C and humidity 65% ​​RH. The mass equivalent to 10,000 m was calculated from the value. The measurement was repeated 10 times, and the simple average value was rounded to the second decimal place as the respective fineness.

[0091] B. Density ratio

[0092] The fineness ratio was calculated from the fineness of the fiber A and the fineness of the fiber B measured in A using the following formula.

[0093] Fineness ratio=fineness of the fiber A [dtex] / fineness of the fiber B [dtex].

[0094] C. Ratio of the number of fibers A to B

[0095] One mixed fiber yarn was collected from the obtained braided fabric and cut perpendicularly to the fiber axis (length direction). The cross section was photographed (magnification 500 times) using a scanning electron microscope (SEM, manufactured by Hitachi High-technologies Co., Ltd.), and the number of fibers A and B was counted on the photographed photos. Based on the number of fibers A and the number of fibers B counted, the root ratio was calculated using the following formula.

[0096] Fiber number ratio = the number of fibers B / the number of fibers A.

[0097] D. Number of convex parts of fiber A

[0098] One mixed fiber was collected from the obtained braided fabric and cut perpendicularly to the fiber axis (length direction). The fiber A in the cross section was photographed (magnification 3000 times) using a scanning electron microscope (SEM, manufactured by Hitachi High-technologies Co., Ltd.), and the convex parts were counted on the photographed photo.

[0099] E. Flatness of fiber B

[0100] One mixed fiber yarn is collected from the obtained braided fabric and cut perpendicularly to the fiber axis (length direction). All fibers B in the cross section are photographed (magnification 3000 times) using a scanning electron microscope (SEM, manufactured by Hitachi High-tech Co., Ltd.), and image processing software (ImageJ) is used to take the maximum length of the fiber B cross section on the photographed photo as the length of the major axis direction, and the direction orthogonal to the major axis direction is measured as the length of the minor axis direction, and the simple average value of each is calculated. In addition, these values ​​are rounded to the second decimal place after the second decimal place. According to the calculated length of the major axis direction and the minor axis direction, the flatness is calculated using the following formula.

[0101] Flatness=length of the cross section of the fiber B in the long axis direction [μm] / length of the cross section of the fiber B in the short axis direction [μm].

[0102] F. Whether the fiber B on the surface of the woven fabric is curled

[0103] The surface of the obtained woven fabric was photographed (magnification 50 times) using a scanning electron microscope (SEM, manufactured by Hitachi High-technologies Co., Ltd.), and the three-dimensional twisted structure or loop structure on the surface of the woven fabric of the fiber B was confirmed on the photographed photograph. In the photographed photograph, if there was only one such twisted structure or loop structure, it was counted as 1, and this was repeated 10 times. When the counted number exceeded half, it was judged that there was curling.

[0104] G. Surface occupancy of mixed yarn per unit area

[0105] The surface of the obtained knitted fabric was photographed (magnification 100 times) using a scanning electron microscope (SEM, manufactured by Hitachi High-technologies Co., Ltd.) in such a way that the entire visual field shows the surface of the knitted fabric, and the image processing software (ImageJ) was used to extract the area of ​​the entire photograph and the area occupied by the yarn other than the mixed fiber yarn, and the area ratio of the mixed fiber yarn was calculated using the following formula. This was repeated for 10 places, and the value after rounding off the decimal point of the simple average value was used as the surface occupancy of the mixed fiber yarn.

[0106] Surface occupancy [%] = (the total area of ​​the photograph [mm 2 ]-Area other than mixed yarn [mm 2 ]) / the total area of ​​the photo [mm 2 ]×100.

[0107] H. Water drop falling angle

[0108] A 20 μL water droplet was dropped onto the surface of a woven fabric mounted on a horizontal plate in a flat shape using a fully automatic contact angle meter (DM-SA, manufactured by Kyowa Interface Science Co., Ltd.), and the angle was measured by slowly tilting the woven fabric from 0 degrees in units of 1 degree at a constant speed (roughly 1 degree / second) until the water droplet completely slid off the woven fabric surface. The smaller the value of the water droplet sliding angle, the better the water droplet removal property was. In addition, if the water droplet does not slide off at 90 degrees, it is considered "no sliding off".

[0109] Regarding the water droplet sliding angle after repeated washing, a knitted fabric that was washed according to the JIS L1930:2014-C4M method and dried according to the A method (hanging drying) was repeated 20 times as a sample, and the water droplet sliding angle was measured according to the method.

[0110] I. Elongation

[0111] The obtained woven fabric was measured by JIS L1096: 2010 8.16.1B method. The obtained knitted fabric was measured by JIS L1096: 2010 8.16.1D method.

[0112] J.Short fiber style touch

[0113] The spun-fiber texture of the obtained knitted fabric was evaluated as follows, and the evaluation with the most evaluation results among the evaluations performed by 10 randomly selected persons was used as the result. When there were multiple most evaluation results, the middle evaluation was used.

[0114] ○: A strong sense of the fine staple-like feel of extra-long cotton

[0115] △: The texture is similar to that of long cotton.

[0116] ×: I can't feel the delicate, short-staple feel of extra-long cotton at all.

[0117] K. Water drop removal during wearing

[0118] The obtained knitted fabric was used to make a mountaineering jacket. The jacket was worn in a laboratory under a hypothetical rainy environment (200 ml / 10 minutes), and the following judgment was made after the rain. Among the evaluations conducted by 10 randomly selected people, the judgment with the most evaluation results was taken as the result. In the case of multiple most judgment results, the middle evaluation was taken. In addition, the size of the jacket worn was set to a size suitable for each physique (S, M, L) based on JIS L4004: 2001 9.

[0119] ○: Almost no water droplets on the surface, good water drop removal performance

[0120] △: The surface is not wet, but there are some water droplets remaining

[0121] ×: The surface is wet to some extent, but the water droplet removal property is poor.

[0122] L. Movement comfort

[0123] Wearing the coat of K, the following judgment was made. Among the evaluations made by 10 randomly selected people, the judgment with the most evaluation results was taken as the result. In the case of multiple most evaluation results, the middle evaluation was taken. In addition, the size of the coat worn by each person was the same as that of K.

[0124] ○: There is almost no pressure or tightness from the fabric, and the movement is comfortable

[0125] △: I feel some pressure or tightness from the fabric, but it is not bad for movement comfort.

[0126] ×: The fabric feels very tight and the movement is not comfortable.

[0127] [Example 1]

[0128] As polymer A, polyethylene terephthalate (5-sodium sulfoisophthalate (SSIA)-polyethylene glycol (PEG) copolymerized polyethylene terephthalate (PET) was prepared by copolymerizing 8 mol% of 5-sodium sulfoisophthalate with respect to the total dicarboxylic acid component and 9 wt% of polyethylene glycol with respect to the total mass, melt viscosity: 100 Pa·s [measurement conditions: temperature 290° C., shear rate 1216 s -1 ], melting point: 233°C); as polymer B, polyethylene terephthalate (PET copolymerized with 7 mol% isophthalic acid (isophthalic acid (IPA) copolymer, melt viscosity: 140 Pa·s [measurement conditions: temperature 290°C, shear rate 1216s -1 ], melting point: 232°C); as polymer C, polyethylene terephthalate (PET, melt viscosity: 130 Pa·s [measurement conditions: temperature 290°C, shear rate 1216s -1 ], melting point: 254°C).

[0129] After these polymers were melted at 290°C, polymer A / polymer B / polymer C were weighed so as to be 10 / 45 / 45 by mass and poured into an assembled Figure 2In the spinning assembly of the composite die shown, the inflow polymer is ejected from the ejection hole. When ejecting the inflow polymer, the polymer B and the polymer C, which are the difficult-to-dissolve components, are joined in parallel, and the island component b1 (1) having an eight-leaf cross-sectional structure with 8 convex parts evenly arranged radially and the island component b2 (8) having a flat cross-sectional structure are joined using the sea component a containing the polymer A composed of the easily-dissolved component. In addition, Figure 2 The cross-sectional conceptual diagram of the composite die is shown in FIG. The polymers A to C measured by the metering plate 1 are respectively controlled by the distribution plate 2 to form a composite cross-sectional shape of the cross-sectional shape of the single fiber, and the composite polymer flow formed by the distribution plate 2 is compressed and ejected by the ejection plate 3. By the ejection method, a Figure 1 The circular cross-sectional shape of the sea-island composite fiber is shown.

[0130] The ejected composite polymer stream was cooled and solidified, and then an oil agent was applied, and the spinning speed was 1500 m / min ...

[0131] The obtained sea-island composite fiber was used as warp and weft to obtain a 2 / 1 twill woven fabric using an air jet loom. The obtained woven fabric was continuously scoured, heated to 90°C using a 1% by mass sodium hydroxide aqueous solution in a liquid jet dyeing machine to remove the sea component (reduction rate 10%), and subjected to relaxation processing at 130°C for 30 minutes using a liquid jet dyeing machine, intermediate setting under the conditions of 180°C, 1 minute, and a tentering rate of 5%, and then subjected to a normal dyeing process. Next, the following waterproofing treatment is performed: immersion in a treatment solution mixed with 4% by mass of "Neoseed" (registered trademark) NR-158 (manufactured by Nikka Chemical Co., Ltd., a non-fluorine (paraffin) waterproofing agent, solid content 30%), 0.2% by mass of "BECKAMINE" (registered trademark) M-3 (manufactured by DIC Corporation), 0.15% by mass of catalyst ACX (manufactured by DIC Corporation), 1% by mass of isopropyl alcohol, and 94.65% by mass of water, and after squeezing the solution with a squeezing mill at a squeezing rate of 60%, drying it with a pin tenter at 130°C for 2 minutes, and curing it at 170°C for 1 minute. In this way, Figure 3 As shown, a 2 / 1 twill woven fabric including mixed yarns of separate fibers A4 and B5 having a warp density of 172 yarns / 2.54 cm, a weft density of 143 yarns / 2.54 cm, and a cover factor (CF) of 2598 was obtained. The evaluation results of the obtained woven fabric are shown in Table 2.

[0132] [Example 2]

[0133] The ejection method of the sea-island composite fiber was changed so that the fineness ratio of the fiber A to the fiber B of the mixed yarn obtained in Example 1 was 1.5, and a sea-island composite fiber of 227 dtex-24 filaments was obtained. A 2 / 1 twill woven fabric having a warp density of 104 yarns / 2.54 cm, a weft density of 87 yarns / 2.54 cm, and a cover factor (CF) of 2590 was obtained by the same method as in Example 1. The evaluation results of the obtained woven fabric are shown in Table 2.

[0134] [Example 3]

[0135] The cross-sectional shape of the sea-island composite fiber of Example 1 was formed into an elliptical shape, and the cross-sectional shape was changed to a cross-section in which the number of island components b1 and b2 were 5 each, thereby obtaining a 238 dtex-24 filament sea-island composite fiber. In addition, a 2 / 1 twill woven fabric having a warp density of 102 yarns / 2.54 cm, a weft density of 85 yarns / 2.54 cm, and a cover factor (CF) of 2596 was obtained by the same method as Example 1. The evaluation results of the obtained woven fabric are shown in Table 2.

[0136] [Example 4]

[0137] When weaving the woven fabric described in Example 1, except that the multifilament (76 dtex-24 filament) having a circular cross-sectional shape composed of polyethylene terephthalate was arranged in the warp yarn and the sea-island composite fiber of Example 1 was arranged in the weft yarn, a 4 / 1 twill woven fabric having a warp density of 172 yarns / 2.54 cm, a weft density of 143 yarns / 2.54 cm, and a cover factor (CF) of 2602 was obtained by the same method as in Example 1. The evaluation results of the obtained woven fabric are shown in Table 2.

[0138] [Example 5]

[0139] When the woven fabric described in Example 4 was woven, except that the woven structure was changed to 8-ply 5-fly satin weave, a 8-ply 5-fly satin weave having a warp density of 172 yarns / 2.54 cm, a weft density of 142 yarns / 2.54 cm, and a cover factor (CF) of 2594 was obtained by the same method as in Example 4. The evaluation results of the obtained woven fabric are shown in Table 2.

[0140] [Example 6]

[0141] The sea-island composite fiber obtained in Example 1 was used as a sheath yarn, and a multifilament (138 dtex-48 filament) of a circular cross-section shape including a stretchable fiber having a parallel bimetallic structure composited with polyethylene terephthalate and polytrimethylene terephthalate was used as a core yarn, and Taslan processing was performed to obtain a mixed fiber yarn (222 dtex-72 filament). Except for changing to the mixed fiber yarn, a 2 / 1 twill woven fabric with a warp density of 103 yarns / 2.54 cm, a weft density of 85 yarns / 2.54 cm, and a cover factor (CF) of 2607 was obtained by the same method as in Example 1. The evaluation results of the obtained woven fabric are shown in Table 2.

[0142] [Example 7]

[0143] The sea-island composite fiber was produced by the same method as in Example 1, and a knitted fabric with an interlock structure was obtained using the fiber using a 28G circular knitting machine. The obtained knitted fabric was continuously scoured, heated to 90°C using a 1% by mass sodium hydroxide aqueous solution in a liquid jet dyeing machine to remove the sea component (reduction rate 10%), and subjected to relaxation processing at 130°C for 30 minutes using a liquid jet dyeing machine, intermediate setting under the conditions of 180°C, 1 minute, and a tentering rate of 5%, and then subjected to a normal dyeing process. Next, the knitted fabric was immersed in a treatment solution mixed with 4% by mass of "Neoseed" (registered trademark) NR-158 (manufactured by Nikka Chemical Co., Ltd., non-fluorine (paraffin) water repellent, solid content 30%), 0.2% by mass of "BECKAMINE" (registered trademark) M-3 (manufactured by DIC Corporation, solid content 80%), 0.15% by mass of catalyst ACX (manufactured by DIC Corporation), 1% by mass of isopropyl alcohol, and 94.65% by mass of water, and then squeezed out with a squeezer at a squeeze rate of 60%, and then dried with a pin tenter at 130°C for 2 minutes, and cured at 170°C for 1 minute to obtain an interlock knitted fabric. The evaluation results of the obtained knitted fabric are shown in Table 2.

[0144] [Example 8]

[0145] The sea-island composite fiber obtained in Example 1 was false-twisted at a ratio of 1.05 times to obtain a false-twisted yarn of 80 dtex-24 filaments. A 2 / 1 twill woven fabric having a warp density of 172 yarns / 2.54 cm, a weft density of 143 yarns / 2.54 cm, and a cover factor (CF) of 2535 was obtained in the same manner as in Example 1. The evaluation results of the obtained woven fabric are shown in Table 2.

[0146] [Comparative Example 1]

[0147] The ejection method was changed so that the island components b1 and b2 of the sea-island composite fiber obtained in Example 1 had the same fineness to obtain a sea-island composite fiber of 238 dtex-24 filaments. A 2 / 1 twill woven fabric having a warp density of 102 yarns / 2.54 cm, a weft density of 85 yarns / 2.54 cm, and a cover factor (CF) of 2596 was obtained by the same method as in Example 1. The evaluation results of the obtained woven fabric are shown in Table 2.

[0148] [Comparative Example 2]

[0149] After obtaining a 2 / 1 twill woven fabric by the same method as in Example 1, except that the waterproofing after the dyeing process was not performed, a 2 / 1 twill woven fabric having a warp density of 172 yarns / 2.54 cm, a weft density of 143 yarns / 2.54 cm, and a cover factor (CF) of 2598 was obtained by the same method as in Example 1. The evaluation results of the obtained woven fabric are shown in Table 2.

[0150] [Comparative Example 3]

[0151] A 2 / 1 twill woven fabric having a warp density of 172 yarns / 2.54 cm, a weft density of 143 yarns / 2.54 cm, and a cover factor (CF) of 2598 was obtained by the same method as in Example 1, except that the cross-sectional shape of the sea-island composite fiber in Example 1 was formed into an elliptical shape and the island component b1 was changed to a circular cross-section without a convex portion. The evaluation results of the obtained woven fabric are shown in Table 2.

[0152] [Comparative Example 4]

[0153] Using the sea-island composite fiber of Example 1 having an elliptical cross-sectional shape and changing the cross-sectional shape to a trilobal cross-sectional shape in which the island component b1 has three convex portions arranged evenly, a 2 / 1 twill woven fabric having a warp density of 171 yarns / 2.54 cm, a weft density of 143 yarns / 2.54 cm, and a cover factor (CF) of 2590 was obtained by the same method as Example 1. The evaluation results of the obtained woven fabric are shown in Table 2.

[0154] [Comparative Example 5]

[0155] The cross-sectional shape of the sea-island composite fiber of Example 1 was formed into an elliptical shape, and the flatness of the island component b2 was reduced to a perfect circular cross-section so that the flatness of the fiber B after dissolution was 1.0. A 2 / 1 twill woven fabric having a warp density of 172 yarns / 2.54 cm, a weft density of 143 yarns / 2.54 cm, and a cover factor (CF) of 2598 was obtained by the same method as Example 1. The evaluation results of the obtained woven fabric are shown in Table 2.

[0156] [Comparative Example 6]

[0157] The sea-island composite fiber of Example 1 was formed into an elliptical cross-sectional shape, and the flatness of the island component b2 was increased so that the flatness of the fiber B after dissolution was 7.0. A 2 / 1 twill woven fabric having a warp density of 172 yarns / 2.54 cm, a weft density of 143 yarns / 2.54 cm, and a cover factor (CF) of 2598 was obtained by the same method as Example 1. The evaluation results of the obtained woven fabric are shown in Table 2.

[0158] [Comparative Example 7]

[0159] A 2 / 1 twill woven fabric having a warp density of 172 yarns / 2.54 cm, a weft density of 144 yarns / 2.54 cm, and a cover factor (CF) of 2607 was obtained by the same method as in Example 1 except that the ejection method was changed so that the island component b1 of the sea-island composite fiber obtained in Example 1 contained only polymer B. The evaluation results of the obtained woven fabric are shown in Table 2.

[0160] [Comparative Example 8]

[0161] A 2 / 1 twill woven fabric having a warp density of 172 yarns / 2.54 cm, a weft density of 143 yarns / 2.54 cm, and a cover factor (CF) of 2598 was obtained by the same method as in Example 1 except that the extrusion method was changed so that the island component b2 of the sea-island composite fiber obtained in Example 1 contained only polymer B. The evaluation results of the obtained woven fabric are shown in Table 2.

[0162] [Comparative Example 9]

[0163] The woven fabric described in Example 1 was continuously scoured, heat-set at 200°C for 1 minute and a draw ratio of 2%, heated to 90°C in a jet dyeing machine using a 1% by mass sodium hydroxide aqueous solution to remove the sea component (reduction rate of 10%), and not subjected to relaxation processing. A 2 / 1 twill woven fabric having a warp density of 171 yarns / 2.54 cm, a weft density of 143 yarns / 2.54 cm, and a cover factor (CF) of 2590 was obtained by the same method as in Example 1 except that the following changes were made. The evaluation results of the obtained woven fabric are shown in Table 2.

[0164] [Table 1]

[0165]

[0166] [Table 2]

[0167] As shown in Tables 1 and 2, it can be seen that the woven fabrics of Examples 1 to 6 and 8, or the knitted fabric of Example 7, are excellent in spun-fiber touch, water repellency, and movement comfort. In particular, the woven fabrics of Examples 1 and 6 and the knitted fabric of Example 7 are knitted fabrics that are waterproofed by controlling the number of convex portions of the fiber A in the cross-sectional shape and the flatness of the fiber B within a preferred range, and by using only the mixed yarn of the fiber A and the fiber B having a bimetallic structure with different fineness and number of fibers, thereby forming a concavo-convex structure having a fine air layer including the curl of the fiber B on the surface extremely effectively, thereby providing a spun-fiber touch, water drop removability, and movement comfort, and are extremely practical knitted fabrics that are excellent in all aspects. In addition, the woven fabric of Example 8 also has the effect of fine curling produced by false twisting, and is further excellent in all aspects of spun-fiber touch, water drop removability, and movement comfort. On the other hand, the woven fabric of Comparative Example 1 has poor touch and water drop removal properties because there is no difference in fineness between fiber A and fiber B and a concavo-convex structure based on a difference in crimp cannot be formed. The woven fabric of Comparative Example 2 has poor touch and water drop removal properties because it absorbs water droplets without water-repellent processing. The woven fabrics of Comparative Examples 3 and 4 have as few convex portions of fiber A as 0 and 3, respectively, and are woven fabrics with poor touch and water drop removal properties. The woven fabric of Comparative Example 5 has poor touch and water drop removal properties because it is formed into a perfect circle with a flatness of 1.0 for fiber B. The woven fabric of Comparative Example 6 has poor touch because the flatness of fiber B is as large as 7.0 and fiber B becomes too thin. The woven fabric of Comparative Example 7 has poor movement comfort because fiber A does not have a bimetallic structure containing two polymers, and therefore has an elongation of 5%, which is not a level at which a comfortable wearing feeling is obtained when used for clothing. The woven fabric of Comparative Example 8 has no crimp because the fiber B does not have a bimetallic structure including two polymers, and thus the fiber B has poor touch in a staple-like manner. The woven fabric of Comparative Example 9 is a woven fabric that is poor in touch, water droplet removal, and movement comfort because the latent crimp of the fiber A and the fiber B of the mixed yarn cannot be expressed due to heat setting at high temperature after continuous scouring, and the crimp of the fiber B is not present in the concavo-convex structure due to the crimp difference or the woven fabric surface.

[0168] Industrial Applicability

[0169] The waterproof knitted fabric of the present invention has high waterproofness by including the mixed fiber yarn having the above characteristics, and also has excellent stretchability and short fiber-like touch for comfortable wearing, so by using the waterproof knitted fabric, clothing or fiber products with the above functionality and excellent touch can be made. The clothing and fiber products can be extremely suitably applied to a wide range of fields, from general casual clothing such as down jackets or jackets, skirts, pants, T-shirts, sweaters, etc., to various sports clothing such as mountaineering or skiing, golf, running, etc., work coats or dustproof clothing for civil engineering, uniform clothing such as medical gowns, interior decoration products such as sofas or curtains, and vehicle interior decorations such as car seats.

[0170] Description of Figure Numbers

[0171] a: Sea ingredients

[0172] b1: Island component

[0173] b2: Island component

[0174] 1: Metering board

[0175] 2: Distribution board

[0176] 3: Ejection plate

[0177] 4: Fiber A

[0178] 5. Fiber B

Claims

1. A knitted fabric comprising mixed yarns, wherein the mixed yarns have: a fiber A having a multi-lobed cross section with a convex portion at the outer periphery; and a fiber B having a flat cross section, wherein the knitted fabric satisfies the following necessary conditions: (1) The fiber A has 6 to 30 convex parts; (2) The flatness of the fiber B is 1.1 to 5.0; (3) Fiber B has a finer fineness than fiber A; (4) having the fiber B curled on the surface of the woven fabric; (5) Both the fiber A and the fiber B are curly fibers having a bimetallic structure comprising two polymers; (6) A water-repellent agent is provided on the surface of the woven fabric.

2. The braided fabric according to claim 1, wherein: The angle at which water droplets slide down the fabric surface is 1 degree to 45 degrees.

3. The braided fabric according to claim 2, wherein: After repeated washing 20 times, the angle of water droplets sliding off the fabric surface is 1 degree to 60 degrees.

4. The braided fabric according to any one of claims 1 to 3, wherein: The elongation in the warp or weft direction is 10% to 100%.

5. The braided fabric according to any one of claims 1 to 4, wherein: The fineness of the fiber A is 0.5 dtex to 5.0 dtex, and the fineness ratio represented by the fineness [dtex] of the fiber A / the fineness [dtex] of the fiber B is 2.0 or more.

6. The braided fabric according to any one of claims 1 to 5, wherein: The fiber number ratio represented by the number of fibers B / the number of fibers A is 2 or more.

7. The braided fabric according to any one of claims 1 to 6, wherein: The surface occupancy of the mixed yarn per unit area is 20% or more.

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