Knitted fabric, padding, and textile product

Abstract

To provide a knitted fabric containing a chenille yarn, suitably used as stuffing of a fiber product such as clothing and bedding, and excellent in washing durability of heat retaining performance.SOLUTION: The knitted fabric includes a chenille yarn and has a basis weight of 150g / m2 or less, wherein the protruding length T2 after elongation of a filament yarn 1 constituting the chenille yarn is 5. 0mm or more, and the protruding length T2 after elongation of the filament yarn is longer than the circle-converted mean size of the area corresponding to stitches. The fancy yarn is preferably a crimped fiber.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to knitted fabrics, fillings and textile products comprising mohair yarn. [Background technology]

[0002] In padded products for clothing, bedding, etc., materials made from natural fibers such as animal fibers or plant fibers, or filling made from synthetic fibers, are stuffed into a bag made by sewing together the outer fabric, which makes it difficult for internal heat to escape to the outside, ensuring heat retention even in cold environments such as in cold regions. Here, in this invention, padding refers to padding used in various sewn products, such as the padding used in clothing and the wadding used in bedding, etc.

[0003] The most common material used for stuffing is feathers (down), which are a filling material with a variety of functions, including a complex natural structure and moisture absorption and heat generation due to their protein fibers. However, feathers cannot be washed at home as a rule, and because they are composed primarily of protein, it can be difficult to impart desired functions to them. Therefore, in light of recent animal welfare concerns, there has been an increasing demand for filling made from synthetic fibers that can be imparted with functionality.

[0004] There are many technical proposals for synthetic fiber fillings in various material forms, such as non-woven cotton, granular cotton, and long-fiber cotton. Utilizing these forms, there is an increasing trend in the development of products that not only simply pursue heat retention, but also offer comfort and convenience in line with customer usage.

[0005] With conventional short-fiber batting, if the amount of batting filling in the bag made up of the outer fabric varies, heat inside the filling can escape from the uneven areas, resulting in so-called cold spots.For this reason, in order to prevent cold spots, the bag formed by sewing to the outer fabric of a jacket, i.e., the down pocket, is filled with an excess of synthetic batting relative to its volume, so that the batting can be kept evenly distributed within the down pocket.

[0006] On the other hand, long-fiber batting is less likely to move within the down pocket than short-fiber batting, so cold spots are less likely to form even if it is not overfilled. In particular, in knitted fabrics made of mohair yarn, which has excellent bulkiness, constraint points are formed between adjacent mohair yarns. Therefore, the batting does not shift even during use or after washing, and the batting density is less likely to vary. This has the advantage of making it easier to control the amount of batting to suit the shape of the sewn product, and from this perspective, mohair yarn has been proposed as a filling material.

[0007] Patent Document 1 proposes a soft mohair yarn that has excellent bulkiness and cushioning properties, excellent resilience and shape recovery, and little settling, as well as a woven or knitted fabric that uses this mohair yarn and has an extremely excellent texture and excellent cushioning properties despite being bulky and lightweight.

[0008] Patent Document 2 proposes a woven or knitted fabric obtained using bulky processed yarns including mohair yarn, in which the filament yarns that make up the mohair yarn are partially divided to form fine gaps, resulting in towel fabric that has excellent foaming properties, foam-removal properties, cleansing properties, washing feel, and drying properties.

[0009] Furthermore, the present inventors proposed a mohair yarn in which an effect yarn is fused and fixed between the core yarn and the presser yarn in Patent Document 3. This mohair yarn improves bulkiness by using an effect yarn with crimp, and a knitted fabric made of this mohair yarn is suitable for stuffing, as it is easy to handle during sewing and easy to care for. [Prior art documents] [Patent documents]

[0010] [Patent Document 1] Japanese Patent Application Publication No. 2018-048412 [Patent Document 2] Japanese Patent Application Laid-Open No. 2002-327357 [Patent Document 3] Patent application No. 2024-514388 Summary of the Invention [Problem to be solved by the invention]

[0011] In Patent Document 1, when used for decorative decorative threads and mats, which are conventional applications of mohair yarn, it is bulky, has excellent resilience and recovery, and is less likely to set, but has the problem that the thickness of the fiber structure required for heat retention is very thin. That is, since the structure of the filament yarn part is dense and the amount of air that can be contained inside as a sheet-like material is small, it lacks bulk and may not have sufficient heat retention as a filling for use in clothing, bedding, etc.

[0012] Patent Document 2 is a technology aimed at producing towel fabric with excellent texture, and is a bulky woven or knitted fabric in which mohair yarn with longer filament threads than conventional ones is inserted. As a result, while it has a certain degree of washing durability when used as a bath towel fabric, etc., it has a large basis weight when used as stuffing for clothing, bedding, etc., and it may be difficult to achieve a lightweight feel as a textile product.

[0013] Patent Document 3 relates to a filling for clothing, bedding, etc., in which the length of at least one side of the stitch is longer than the protruding length of the filament yarn of the mohair yarn, thereby causing the filament yarn to protrude. By using a sheet-like material made of this knitted fabric, it is possible to achieve a state in which the batting is filled evenly in the side fabric, even if a sufficient amount is not filled.

[0014] However, in Patent Document 3, the protruding filaments are shorter than the length of one side of the mesh, so that the filaments may be wound around the core filaments due to the washing water flow, and as a result, the washing durability of the heat retention may be insufficient when the fabric is repeatedly washed at home.

[0015] Synthetic fiber padding is suitable for use in inner jackets, light work uniforms, and the like, but sweating and staining often occur during use. Therefore, there is a demand for lightweight, long-fiber padding with excellent washing durability that can maintain the knitted fabric shape and functions such as heat retention even after repeated washing. [Means for solving the problem]

[0016] To solve the above problem, the present inventors have conducted extensive research and found the following: That is, by providing a knitted fabric including a mohair yarn 6 in which the protruding length T2 of the effect yarn 1 after stretching is 5.0 mm or more, and by configuring the protruding length T2 of the effect yarn 1 after stretching to be longer than the average diameter of the circle equivalent area of ​​the stitches, the winding of the effect yarn 1 around the core yarn 2 due to the washing water flow is suppressed. 2 Even with the following low basis weight, cold spots are unlikely to occur, and the knitted fabric maintains its heat retention even after 20 washes.

[0017] The present invention has the following features (1) to (8). (1) The weight of the knitted fabric is 150 g / m, including mohair yarn. 2 The knitted fabric is as follows: the protruding length T2 of the effect yarn constituting the mohair yarn after stretching is 5.0 mm or more, and the protruding length T2 of the effect yarn after stretching is longer than the average diameter of a circle equivalent to an area of ​​stitches. (2) The knitted fabric according to (1), wherein the effect yarn 1 is a fiber having crimps. (3) The knitted fabric according to (2), wherein the radius of curvature of the crimp of the effect yarn 1 is 0.5 mm or more and 5.0 mm or less. (4) The knitted fabric according to any one of (1) to (3), in which T1 / T2 is less than 1.00, where T1 is the protruding length of the effect yarn 1 before elongation. (5) The knitted fabric according to any one of (1) to (4), wherein the effect yarns 1 are hollow fibers and have a hollow ratio of 10% or more in the fiber cross section. (6) The knitted fabric according to any one of (1) to (5), which is an inlay knitted structure using the mohair yarn 6 as an insert yarn. (7) A stuffing material using the knitted fabric described in any one of (1) to (6). (8) A textile product using the filling described in (7). [Effects of the Invention]

[0018] According to the present invention, 150 g / m 2It is possible to provide a knitted fabric that has a low basis weight of 1000 kJ / cm or less, yet has an excellent heat retention rate even after 20 repeated washes. This knitted fabric can be suitably used for stuffing and textile products. [Brief explanation of the drawings]

[0019] [Figure 1] FIG. 1 is a schematic diagram showing an example of a mohair yarn 6 included in the knitted fabric of the present invention. [Figure 2] FIG. 2 is a schematic diagram of an inlay knitting structure of the present invention. [Figure 3] FIG. 3 is a schematic diagram for explaining the radius of curvature of the crimp of the effect yarn 1 and a method for measuring it, for the mohair yarn 6 included in the knitted fabric of the present invention. [Figure 4] FIG. 4 is a schematic diagram showing an example of a hollow cross-section fiber used in the effect yarn 1. As shown in FIG. [Figure 5] FIG. 5 is a schematic diagram for explaining the single yarn void ratio of the hollow cross section fiber used in the effect yarn 1. As shown in FIG. [Figure 6] FIG. 6 is a schematic diagram showing an example of a spinneret outlet hole for forming a hollow cross-section fiber used for the effect yarn 1. As shown in FIG. [Figure 7] FIG. 7 is a schematic diagram showing the protruding length T1 of the filaments 1 before elongation and the protruding length T2 after elongation. DETAILED DESCRIPTION OF THE INVENTION

[0020] The present invention will be described in detail below along with embodiments for carrying out the invention. Although the embodiments of the present invention will be described below, the present invention is not limited to the scope described below.

[0021] The knitted fabric of the present invention contains mohair yarn 6 and has a basis weight of 150 g / m 2 The knitted fabric is characterized in that the protruding length T2 of the effect yarn 1 constituting the mohair yarn 6 after stretching is 5.0 mm or more, and the protruding length T2 of the effect yarn 1 after stretching is longer than the average diameter of a circle equivalent to an area of ​​stitches.

[0022] 〔knitting〕 <Yarns that make up knitted fabrics> The knitted fabric of the present invention is composed of a ground yarn 5 and a mohair yarn 6, and it is preferable that the yarns constituting these are both composed of synthetic fibers. The synthetic fibers referred to here are fibers made of synthetic polymers (hereinafter referred to as "polymers"), and fibers made of polymers produced by melt spinning, solution spinning, etc. can be used. In terms of ease of fiberization, it is preferable that the polymer is a thermoplastic polymer, and the fiber may be a single-component fiber made of a single thermoplastic polymer component, or a composite fiber in which multiple thermoplastic polymer components are arranged in the fiber cross section.

[0023] Examples of thermoplastic polymers that make up the synthetic fibers include polyesters such as polyethylene terephthalate or its copolymers, polytrimethylene terephthalate, polybutylene terephthalate, and polyethylene naphthalate; polyamides such as nylon 6, nylon 66, and nylon 610; polyolefins such as polyethylene and polypropylene; and melt-moldable polymers such as polycarbonate, polyacrylate, polylactic acid, and thermoplastic polyurethane.

[0024] The thermoplastic polymer constituting the ground yarn 5 according to the present invention is preferably polyethylene terephthalate or a polyamide such as nylon 6, nylon 66, or nylon 610. When the ground yarn 5 is made of these thermoplastic polymers, it is less likely to break during knitting, and is easier to handle, for example, when filling a side fabric as stuffing, such as when pulling out a knitted fabric containing mohair yarn 6 from a roll or a packaging bag. Furthermore, since fibers made of polyamide have excellent tensile strength, it is more preferable that the thermoplastic polymer constituting the ground yarn 5 is polyamide. Furthermore, in the present invention, from the viewpoint of increasing the bulkiness of the knitted fabric, it is preferable to increase the mixing ratio of mohair yarn 6 and increase the number of effect yarns 1, so it is preferable to make the ground yarn 5 lighter, and it is more preferable that the thermoplastic polymer constituting the ground yarn 5 is nylon 6.

[0025] Of the thermoplastic polymers listed above, polycondensation polymers such as polyester and polyamide are preferred as the thermoplastic polymer constituting the mohair yarn 6. Polyester and polyamide are crystalline and have relatively high melting points, and therefore are preferred examples because they do not cause deterioration in the quality of the thermoplastic polymer constituting the fibers or settling of the fibers constituting the mohair yarn 6, even when heated at relatively high temperatures during processing of the mohair yarn 6, heat treatment steps in post-processing, etc., or during actual use (cleaning, etc.). From the perspective of heat resistance, it is more preferred that the melting point of the thermoplastic polymer be 165°C or higher.

[0026] The thermoplastic polymer may contain various additives, such as inorganic substances such as titanium oxide, silica, and barium oxide, colorants such as carbon black, dyes, and pigments, flame retardants, fluorescent brighteners, antioxidants, and ultraviolet absorbers, as long as the effects of the present invention are not impaired.

[0027] <Knitting structure> The knitted fabric of the present invention can employ various knitting structures, including basic structures such as plain knitting, rib knitting, and purl knitting, as well as modified structures such as inlay knitting.

[0028] When the knitting structure of the knitted fabric of the present invention is a basic structure such as plain knitting, rib knitting, or purl knitting, the knitting structure is formed by a ground yarn 5 and a mohair yarn 6. In this case, for example, the ground yarn 5 and the mohair yarn 6 may be arranged so that two of them are joined together to form the knitting structure, or the ground yarn 5 and the mohair yarn 6 may be arranged so that the yarn arrangement ratio is changed, such as one or more of them being arranged, or two ground yarns 5 and one mohair yarn 6 being arranged.

[0029] On the other hand, when the knitted fabric of the present invention has an inlay knit structure, it is possible to adopt a configuration in which mohair yarn 6 is used as an insert yarn in at least some locations of a basic structure such as plain knit, rib knit, or purl knit, which is made only of ground yarn 5. Here, FIG. 2 shows an inlay knit structure with plain knit as a basic structure as an example of the knitted fabric of the present invention. In FIG. 2, stitches formed by ground yarn 5, which is the basic structure, are continuously connected in the horizontal direction (hereinafter referred to as the course direction) to form weft knit. Using this as a basic structure, mohair yarn 6 can be inserted at regular intervals in the wale direction of the knitted fabric, for example, by inserting the same number of mohair yarns 6 as the ground yarns 5, or by knitting two ground yarns 5 and inserting one mohair yarn 6. Furthermore, when hooking at intervals in the course direction of the knitted fabric, the intervals can be adjusted, thereby allowing the basis weight of the knitted fabric to be within a desired range.

[0030] The knitting structure of the knitted fabric of the present invention is preferably an inlay knitting structure using mohair yarn 6 as an inserting yarn. The inlay knitting structure improves shape stability through a relatively densely knitted basic structure, and the mohair yarn 6, which is an inserting yarn, can reduce the area of ​​stitches that serve as heat escape routes, i.e., voids. Furthermore, the winding of the effect yarn 1 around the stitches is suppressed during knitting, and the fabric is formed with the effect yarn 1 of the mohair yarn 6 protruding from the opposite side of the basic structure, allowing the mohair yarn 6 to be used without impairing its bulkiness. In other words, this structure allows a large amount of air with low thermal conductivity to be retained inside the knitted fabric, improving heat retention. In addition, the large deformation of the protruding effect yarn 1 provides a soft feel when compressed, making the knitted fabric suitable for stuffing.

[0031] <Average circle diameter of stitch equivalent area> In the knitted fabric of the present invention, the protruding length T2 of the effect yarn 1 constituting the mohair yarn 6 after stretching must be longer than the average diameter of the equivalent circle of the stitch area. Here, the protruding length T2 of the effect yarn 1 after stretching is the length of the effect yarn 1 protruding from the core yarn 2 of the mohair yarn 6. The protruding length T2 of the effect yarn 1 after stretching is the length from the tip of the effect yarn 1 to the core yarn 2 when the effect yarn 1 is stretched, and is specifically measured by the method described in the Examples. A stitch in the present invention refers to a portion surrounded by loops that constitute the basic weave of the knitted fabric. The equivalent stitch area is the value obtained by dividing a predetermined area of ​​the knitted fabric of the present invention by the number of stitches, and is approximately equivalent to the area of ​​one stitch, as described below. The equivalent circle diameter of the equivalent stitch area is the average diameter of a perfect circle when the area approximately equivalent to one stitch is converted into a perfect circle. A method for measuring the equivalent circle diameter of the equivalent stitch area will be described below.

[0032] In the knitted fabric of the present invention, the protruding length T2 of the effect yarn 1 after elongation is longer than the average diameter of the circle equivalent of the stitch area, so that the effect yarn 1 can be prevented from being wound around the basic structure of the knitted fabric by the water flow during washing. Therefore, the form in which the effect yarn 1 protrudes in the mohair yarn 6 is maintained even after washing, and the properties such as the thickness and heat retention of the knitted fabric are less likely to deteriorate. Therefore, the weight of 150 g / m 2 When the knitted fabric has the following low basis weight, the shape of the knitted fabric can be stabilized even after repeated washing, and heat retention, soft touch, etc. can be maintained.

[0033] The longer the protruding length T2 of the effect yarn 1 after stretching relative to the average circle-equivalent diameter of the stitch-equivalent area, the more effect yarn 1 can be present in the stitch portion, and even when the knitted fabric has a low basis weight, the fewer cold spots are formed in the stitch portion, which is preferable. From this viewpoint, the ratio of the protruding length T2 of the effect yarn 1 after stretching relative to the average circle-equivalent diameter of the stitch-equivalent area is preferably 2.0 or more, and more preferably 3.0 or more.

[0034] Here, the average circular diameter of the stitch-equivalent area in the present invention is determined from an image taken of a surface on which the stitches of the knitted structure are visible. If the amount of yarn is large and the stitches are difficult to see, it is recommended to make the stitches of the knitted structure more visible by appropriately cutting the protruding effect yarns 1 of the mohair yarn 6 or pulling out the mohair yarn 6. The observation field is also taken using a microscope or other device at a magnification of 20x, with 10 images taken at random so that the observation fields do not overlap in the warp and weft directions. Next, an evaluation frame with an evaluation area of ​​10 mm x 10 mm is set in the image, and one stitch of the knitted structure is placed in one corner of the evaluation frame, with the stitches in the wale direction and the course direction aligned vertically and horizontally, respectively. After counting the number of stitches of the knitted structure included in the evaluation frame, the evaluation area is divided by the number of stitches to calculate the area equivalent to one stitch, and the diameter if this area were considered a perfect circle is calculated. The above operation is performed for 10 photographed images, and the average value of the 10 images is taken as the average circle diameter (mm) of the stitch-equivalent area in the present invention. Note that, since stitches in a knitted fabric usually overlap with adjacent stitches, the value is smaller than the apparent area of ​​one stitch.

[0035] <Count of knitted fabric> The knitted fabric of the present invention has a basis weight of 150 g / m 2 The weight of the knitted fabric must be 150 g / m or less. 2 When the weight of the knitted fabric is 90 g / m or less, it has a light weight suitable for use as stuffing for clothing, bedding, etc., and can improve comfort when worn or used. It also has excellent handleability when made into a textile product. When the knitted fabric of the present invention is applied to clothing, the smaller the weight of the knitted fabric, the lighter it is and the more comfortable it is to wear, and the more portable the product is. Therefore, the weight of the knitted fabric is 90 g / m or less. 2 Preferably, it is 60 g / m or less. 2 On the other hand, the larger the basis weight of the knitted fabric, the better the shape stability and hence the better the heat retention and washing durability. 2 It is preferable that this is equal to or greater than this.

[0036] [Moll Yarn 6] The knitted fabric of the present invention includes a mohair yarn 6. As shown in FIG. 1 , the mohair yarn 6 is a textured yarn in which an effect yarn 1 is sandwiched between a core yarn 2 and a presser yarn 3 and twisted together, and the effect yarn 1 is fused and fixed. Here, the mohair yarn 6 in FIG. 1 illustrates a case in which neither the core yarn 2 nor the presser yarn 3 has fusibility, and a fusible yarn 4 is used together with the core yarn 2 and the presser yarn 3 to fusibly fix the effect yarn 1. However, either or both of the core yarn 2 and the presser yarn 3 may be fusible yarns, and the effect yarn 1 may be fusible and fixed without using the fusible yarn 4. Note that, for convenience, the mohair yarn 6 shown in FIG. 1 illustrates the core yarn 2, presser yarn 3, and fusible yarn 4 separately, but in the mohair yarn 6 according to the present invention, the core yarn 2, presser yarn 3, and fusible yarn 4 are fused and integrated partially or entirely. This configuration suppresses the falling off of the effect yarn 1 during knitting and when pulled out for filling as a stuffing, leading to improvement in the handleability of the mohair yarn 6.

[0037] In the knitted fabric of the present invention, the mohair yarn 6 is included in a form in which the effect yarns 1 of the mohair yarn 6 are spread and present in a protruding state on at least one surface of the knitted fabric.

[0038] In the specification of the present invention, when explaining the configuration of the mohair yarn 6, the state in which the core yarn 2, the presser yarn 3, and the fusion yarn 4 are twisted together may sometimes be referred to simply as the core yarn 2.

[0039] <Core structure of Mohr Yarn 6> The core yarn 2 and presser yarn 3 of the mohair yarn 6 included in the knitted fabric of the present invention may be the same yarn or different yarns. Also, the core yarn 2 and presser yarn 3 may be formed by plying together multiple yarns. Here, "same yarn" means that at least the resin composition, fineness, and number of filaments are the same, and if it is a textured yarn, the processing conditions, etc. are also the same.

[0040] <Resin Composition of Core Yarn 2 and Presser Yarn 3> The core yarn 2 and presser yarn 3 used in the mohair yarn 6 of the present invention are preferably made of fibers with excellent tensile strength, and polyester or polyamide is preferred, in order to ensure excellent handleability, such as resistance to yarn breakage during knitting and when filling a side fabric as stuffing with the mohair yarn 6, for example, when pulling out a knitted fabric containing the mohair yarn 6 from a roll of fabric or a packing bag. Furthermore, polyamides such as nylon 6, nylon 66, and nylon 610 are more preferred, from the viewpoint of imparting flexibility to the mohair yarn 6 in addition to tensile strength, and nylon 66 is even more preferred from the viewpoint of heat resistance when the effect yarns 1 are fused and fixed, as well as the ability to maintain appropriate resilience even when subjected to repeated deformation.

[0041] In order for the knitted fabric of the present invention to maintain its shape and functions such as heat retention even after repeated washing, it is preferable to prevent the effect yarns 1 constituting the mohair yarn 6 from falling off, in order to prevent the area of ​​the stitches that serve as heat escape routes from increasing and the thickness of the knitted fabric from decreasing. Therefore, it is preferable to increase the gripping force of the effect yarns 1 by the core yarn 2 and the presser yarn 3. From this perspective, it is preferable to use, as the core yarn 2 and the presser yarn 3, yarns with crimps that can widen the contact points with the effect yarns 1 that are perpendicular to the yarn axis direction of the mohair yarn 6, false twisted yarns such as woolly yarns and buleria yarns, spun yarns, etc. Furthermore, in terms of gripping the fusion points of the fusion yarns 4, it is preferable that the core yarn 2 and the presser yarn 3 have uneven surfaces as yarn bundles, and it is more preferable that the core yarn 2 and the presser yarn 3 are spun yarns.

[0042] From the viewpoint of reducing the weight of the filling, the fineness of the core yarn 2 and the presser yarn 3 is preferably 20 dtex or more and 400 dtex or less, more preferably 30 dtex or more and 350 dtex or less, and even more preferably 40 dtex or more and 300 dtex or less.

[0043] <Resin composition of fusion yarn 4> Regarding the core yarn 2 and the presser yarn 3, if the core yarn 2 or the presser yarn 3 has fusibility, it is preferable that they remain inside the mohair yarn 6 as the core yarn 2 or the presser yarn 3 even after fusion and fixation, sandwiching the effect yarn 1. It is preferable to use a core-sheath type composite fiber whose core is a high-melting point component and whose sheath is a low-melting point component. On the other hand, if the core yarn 2 and the presser yarn 3 do not contain a fusible component, it is preferable to add the fusible yarn 4 to one or both of them and supply them to the twisting machine. In this case, preferred examples of the fusible yarn 4 include the above-mentioned core-sheath type composite fiber or a single-component fiber made of a polyester-based low-melting point polymer and a polyamide-based low-melting point polymer. Furthermore, to strengthen the adhesion and fixation of the effect yarn 1, a single-component fusible yarn made only of the fusible component is more preferred. Furthermore, to ensure the thickness of the knitted fabric as in the present invention, it is preferable to suppress excessive shrinkage of the effect yarn 1 itself, and a fiber that can achieve fusion and fixation at a low temperature and in a short time is preferred. From this viewpoint, a single-component fusible yarn made of a polyamide-based low-melting-point polymer is more preferable.

[0044] In order to increase the bulkiness of the knitted fabric and improve heat retention, it is preferable to reduce the mass ratio of the fusion yarn 4 in the mohair yarn 6 within a range that can sufficiently suppress the dropout of the effect yarn 1. From the above-mentioned viewpoints, the fineness of the fusion yarn 4 is preferably 10 dtex or more and 400 dtex or less, more preferably 20 dtex or more and 350 dtex or less, and even more preferably 30 dtex or more and 300 dtex or less.

[0045] It is preferable to select the fineness of each fiber of the core yarn 2, presser yarn 3, and fusion yarn 4 used in the mohair yarn 6 of the present invention so that the total fineness of the core portion (the core yarn 2 and presser yarn 3 fixed by the fusion yarn 4) is 100 dtex or more. By making the total fineness of the core portion 100 dtex or more, it becomes easy to obtain strength that can suppress yarn breakage during the fusion treatment after mohair processing and during handling as the mohair yarn 6. In the present invention, from the viewpoint of light weight and increasing the thickness of the knitted fabric, it is preferable to make the mass of the core portion as light as possible, and it is preferable that the substantial upper limit of the total fineness of the core portion is about 1000 dtex.

[0046] <Spacing of the fusion-fixed points of the filament 1 in the core> In the mohair yarn 6 of the present invention, the interval between the fused and fixed points of adjacent effect yarns 1 sandwiched between the core yarn 2 and the presser yarn 3 is preferably 1.0 mm or more and 4.0 mm or less. When the interval between the effect yarns 1 is in this range, the crimped effect yarns 1 do not overlap excessively, and are appropriately entangled with the core yarn 2 with the single yarns spread apart, allowing the tips of the effect yarns 1 to protrude more in the outer circumferential direction in the yarn cross section of the mohair yarn 6. By arranging the effect yarns 1 in this manner, the protrusion of the effect yarns 1 in the thickness direction of the knitted fabric increases, increasing the thickness of the knitted fabric and providing a soft feel. From this perspective, the interval between the fused and fixed points of adjacent effect yarns 1 is more preferably 1.3 mm or more and 3.5 mm or less, and even more preferably 1.5 mm or more and 3.0 mm or less.

[0047] As shown in Figure 1, the interval between the fused and fixed points of the effect yarn 1 is determined by unwinding the effect yarn 1 entangled with the core yarn 2 of the mohair yarn 6, orienting it perpendicular to the core yarn 2, and observing it with a digital microscope or the like at a magnification that allows confirmation of at least two points where the effect yarn 1 is sandwiched between the core yarn 2 and the presser yarn 3. Using this observation image, the interval between the fused and fixed points of the effect yarn 1 is confirmed by measuring the distance between the two points from the center point of the effect yarn 1 at the fused point to the center point of the adjacent effect yarn 1.

[0048] <Flower Thread 1> The effect yarn 1 according to the present invention is preferably a fiber with excellent rigidity that allows the effect yarn 1 to easily protrude. This allows the thickness of the knitted fabric to be increased so that a large amount of air with low thermal conductivity can be retained inside the knitted fabric. For this reason, the effect yarn 1 is preferably a polyester fiber. Furthermore, among polyesters, polyethylene terephthalate is more preferable from the viewpoint of heat resistance, as with the core yarn 2 and the presser yarn 3.

[0049] In order to increase the bulkiness of the knitted fabric, the effect yarn 1 is preferably a fiber having a shape that makes it easy to increase the volume per fineness, and is preferably a hollow fiber having a hollow portion in the fiber cross section, with the hollow portion continuing in the length direction of the fiber, as shown in Fig. 4. Here, in consideration of preventing settling, which is a cause of a decrease in heat retention due to washing or the passage of time in use, it is preferable that the mass per unit volume of the effect yarn 1 is small in order to reduce the load due to its own weight. Therefore, the effect yarn 1 is preferably a hollow fiber, and is preferably a hollow fiber having a hollow ratio of 10% or more in the fiber cross section.

[0050] The hollow ratio referred to here is the volume ratio of the portion of the fiber where no polymer is present, and can be measured, for example, by the following method.

[0051] After cutting the filaments 1 so that their cross sections can be observed, the fiber cross sections are photographed using an electron microscope (SEM) at a magnification (500x) that allows the cross sections of at least 10 single fibers to be observed. Ten single fibers are randomly selected from the photographed image, and image processing software is used to calculate the total area of ​​the fiber cross section, including the hollow portion, and the area of ​​the hollow portion, and the area ratio of the hollow portion is then calculated from these values. The above procedure is performed for the 10 photographed images, and the average value is the hollow ratio of the hollow fiber of the present invention.

[0052] In the case of hollow fibers with a round cross section, the hollowness can be easily evaluated as follows: The cross section of the hollow fiber is observed using a magnifying means such as a microscope, and the fiber diameter converted to a round cross section is measured from the image. The hollowness can also be calculated as the ratio of the measured fineness to the fineness of a solid fiber calculated from the fiber diameter and the material density of the fiber.

[0053] In the present invention, from the viewpoint of improving the heat retention of the knitted fabric, the hollow ratio of the effect yarn 1 is more preferably 20% or more. Within this range, the effect yarn 1 can contain more air, and thus the knitted fabric can be realized as being light in weight in addition to excellent heat retention. Therefore, the hollow ratio of the effect yarn is more preferably 30% or more. From this viewpoint, the higher the hollow ratio, the more preferable it is, but the upper limit of the hollow ratio in the present invention is preferably 50%, as this range is less likely to cause cross-sectional deformation during the spinning process and the processing process of the mohair yarn 6 and allows stable production.

[0054] The cross section of the hollow fiber may be round, but it is more preferable to use fibers having an irregular cross section such as a Y-shaped, multilobal, flat, or multifin cross section, which are lightweight and can be easily increased in volume, and which also contain hollow portions. By using such fibers, air can be retained not only in the hollow portions inside the fiber but also in the gaps formed between adjacent single yarns due to the unevenness provided on the outside of the fiber, which is preferable from the viewpoint of further improving heat retention.

[0055] The key to improving the heat retention of knitted fabrics is the voids within the fiber bundle, and using fibers with irregularities on the outside of the fiber is suitable for forming voids within the fiber bundle. When using fibers with irregularities on the outside of the fiber in the present invention, the single-yarn void ratio is the difference between the area obtained by the circumscribing circle connecting the tips of the protrusions in the cross section of a single yarn and the area of ​​the solid part, i.e., the sum of the area of ​​the hollow part within the fiber and the space formed between the protrusions, and it is preferable that this single-yarn void ratio be in the range of 35 to 65%.

[0056] Here, the single-yarn void ratio is determined by taking an image of the single-yarn cross section, calculating the area of ​​the circumscribed circle connecting the tips of the protrusions on the outer periphery of the fiber, and taking this as the area S1. The area S2 of the solid portion in the single-yarn cross section (the area of ​​the gray portion in Figure 5) can be calculated from the fineness and fiber density, and the single-yarn void ratio can be calculated using the following formula.

[0057] Single fiber porosity (%)=((S1-S2) / S1)×100 S1: Area of ​​the circumscribed circle connecting the tips of the protrusions in the cross section of a single yarn S2: Area of ​​the solid part in the cross section of a single yarn.

[0058] <Crimping of filament thread 1> The effect yarn 1 of the mohair yarn 6 included in the knitted fabric of the present invention is preferably a fiber having crimps. Although the effect yarn 1 is fused and fixed to the core yarn 2 and the presser yarn 3, it may fall off during washing. However, if the effect yarn 1 has crimps, it will get caught at a position sandwiched between the core yarn 2 and the presser yarn 3 during washing, preventing the effect yarn 1 from falling off and improving the washing durability of the heat retention. The crimped effect yarn 1 indicates that the effect yarn 1 has a three-dimensional spiral structure. Fibers having such a spring-like spiral structure have recovery and resilience against elongation and compression deformation. With such a structure, the effect yarn 1 repels each other even among the individual yarns, opening the effect yarn 1 individually, and the tip of the effect yarn 1 is likely to face in all directions in a cross section perpendicular to the longitudinal direction of the mohair yarn 6. This increases the excluded volume of the mohair yarn 6, increasing the bulkiness of the knitted fabric and improving the heat retention.

[0059] Furthermore, the resilience of the mohair yarn 6 provides a good feel as a filler, and even when subjected to repeated compression and recovery, the supporting filament yarn 1 recovers like a spring, preventing sagging. This is also suitable from the viewpoint of improving the washing durability of heat retention, which is the objective of the present invention, as well as suppressing the deterioration of the knitted fabric's properties over time in practical use.

[0060] In the present invention, as described above, hollow fibers are preferably used as the effect yarns 1 of the mohair yarn 6 to enhance the bulkiness of knitted fabrics. When the hollow fibers are asymmetrically cooled during spinning, differences in fiber orientation due to differences in cooling across the fiber cross section are more likely to occur. This makes it easier to obtain fibers with apparent crimp even from a single component. The degree of apparent crimp in this case is a gentle crimp with a curvature radius of several tens of mm. However, when the mohair yarn 6 is processed, the single yarns of the effect yarn 1 are more likely to open, which makes it easier to enhance the bulkiness of knitted fabrics. The crimp obtained by such asymmetric cooling can be appropriately adjusted by the cooling conditions and draw ratio, particularly immediately after discharge during spinning.

[0061] <Curvature radius of filament 1> For the mohair yarn 6 included in the knitted fabric of the present invention, the radius of curvature of the crimp of the effect yarn 1 is preferably 0.5 mm or more and 5.0 mm or less. Increasing the radius of curvature of the effect yarn 1, that is, the magnitude of the curvature of the effect yarn 1, increases the excluded volume per single yarn of the effect yarn 1, and thus the bulkiness of the knitted fabric is likely to be increased. On the other hand, decreasing the radius of curvature weakens the excluded volume effect per single yarn of the effect yarn 1, reducing the thickness of the knitted fabric and leading to a deterioration in the tactile feel. Controlling the radius of curvature within a small range increases the number of catches, making the effect yarn 1 less likely to be pulled out and improving the effect of preventing the effect yarn 1 from falling out during washing and actual use. However, if the crimp is too small, less than 0.5 mm, the single yarns of the effect yarn 1 are likely to become entangled with each other (a zipper effect), which makes the effect yarn 1 more likely to be pulled out when subjected to an external force and may also reduce the bulkiness of the knitted fabric.

[0062] In the present invention, the effect of suppressing the shedding of the effect yarn 1 and the bulkiness of the knitted fabric are appropriately adjusted to fall within desired ranges, and the radius of curvature of the effect yarn 1 is more preferably 0.6 mm or more and 3.0 mm or less, and even more preferably 0.7 mm or more and 2.0 mm or less. Fibers with a mixture of large and small radii of curvature can also be used, or a combination of fibers with a small radius of curvature and fibers with a large radius of curvature can also be used as the effect yarn 1.

[0063] The radius of curvature of this effect yarn 1 is obtained by collecting the effect yarn 1 from the mohair yarn 6, placing one single yarn of the effect yarn 1 on an observation stage, and photographing it from above using a digital microscope or the like at a magnification that allows observation of the crimp morphology. Specifically, it is measured by the method described in the Examples.

[0064] <Protruding length of filament 1 after elongation T2> In the present invention, the protruding length T2 of the effect yarn 1 constituting the mohair yarn 6 after stretching must be 5.0 mm or more. Here, the protruding length T2 of the effect yarn 1 after stretching refers to the length of the effect yarn 1 protruding from the core yarn 2. When the protruding length T2 of the effect yarn 1 after stretching is 5.0 mm or more, the effect yarn 1 is less likely to come off during washing, and the bulkiness of the knitted fabric can be maintained. When the protruding length T2 of the effect yarn 1 after stretching is shorter than 5.0 mm, the effect yarn 1 is more likely to fall off, making it difficult to effectively achieve the effect of suppressing fall-off due to the crimping of the effect yarn 1, which will be described later. In addition, the amount of compressive deformation caused by the protruding effect yarn 1 decreases, and the fabric tends to feel stiff to the touch.

[0065] On the other hand, if the effect yarn 1 is too long, the single yarns of the effect yarn 1 tend to tangle with each other, and the tangled parts are subject to strong water flow resistance during washing, which promotes winding around the core yarn 2 and is likely to lead to a decrease in the washing durability of heat retention. In addition, the tactile feel of the tangled parts becomes hard, and the greater the difference from the other soft tactile parts, the more the tactile feel is felt as a foreign object. If this increases, the tactile feel of the entire knitted fabric tends to become hard, just as when the effect yarn 1 is short.

[0066] The longer the protruding length T2 of the effect yarn 1 after stretching, the more fibers there are present in the gaps between the stitches formed by the ground yarn 5, and the more likely it is that cold spots will be reduced when the effect yarn 1 is used as a stuffing.

[0067] Here, suppressing heat release to the outside from voids (so-called cold spots) present in the knitted fabric when viewed two-dimensionally from the surface of the knitted fabric and retaining heated air within the knitted fabric leads to enhanced heat retention. In other words, increasing the number of fibers present in the voids has the following effects: First, the number of paths through which heat released from the heat source can move directly to the outside is reduced. Second, by arranging the fibers so that heat moving in the thickness direction always hits the fibers, heat retention areas are formed within the knitted fabric. This retained air then retains heat, effectively improving heat retention. From this perspective, the protruding length T2 of the effect yarn 1 after elongation is more preferably 10.0 mm or more and 20.0 mm or less. Furthermore, it is even more preferably 12.5 mm or more and 17.5 mm or less, resulting in a knitted fabric suitable for use as a lightweight, bulky filling material.

[0068] <Ratio of filament 1 front-to-rear elongation length T1 / T2> In the present invention, as described above, the effect yarn 1 protruding from the core yarn 2 of the mohair yarn 6 increases the number of effect yarn 1 fibers present in the gaps between stitches formed by the ground yarn 5, reducing cold spots when used as a filler. Therefore, it is preferable that the effect yarn 1 has a moderate curvature due to crimping or the like. When the mohair yarn 6 is extracted from a knitted fabric, the protruding length of the effect yarn 1 before and after stretching is T1 and T2, respectively, the length ratio T1 / T2 of the effect yarn 1 before and after stretching is preferably less than 1.00. As shown in FIG. 7 , the protruding length T1 of the effect yarn 1 before stretching is the linear distance from the core yarn 2 to the end of the curved effect yarn 1. The protruding length T2 after stretching is the length from the tip of the effect yarn 1 to the core yarn 2 when the effect yarn 1 is stretched, as described above, and is specifically measured by the method described in the Examples. When T1 / T2 is less than 1.00, the effect yarns 1 can be dispersed and arranged in the gaps in the knitted fabric within the knitted fabric, making it easier to form heat retention areas, and improving heat retention. From this perspective, T1 / T2 is more preferably 0.90 or less, and even more preferably 0.80 or less. In other words, it is preferable that the effect yarn 1 is formed with a large curve. If the effect yarn 1 has such a form, the number of contact points between the single yarns of the effect yarn 1 increases and they support each other, making it easier to maintain the bulkiness of the knitted fabric.

[0069] On the other hand, the smaller T1 / T2 is, the more curvature there is, and the number of contact points between the single yarns of the effect yarn 1 increases, but the curved portions of the single yarns of the effect yarn 1 tend to bite into each other and become entangled, which tends to reduce bulkiness. Therefore, T1 / T2 is preferably 0.40 or more, and more preferably 0.50 or more.

[0070] Here, the protruding length T1 of the effect yarn 1 before stretching is the linear distance from the core yarn 2 to the end of the curved effect yarn 1, and when measuring the protruding length T2 of the effect yarn 1 after stretching, the protruding length T1 of the effect yarn 1 before stretching can be obtained by measuring the vertical distance from the fiber axis of the core yarn 2 to the end of the effect yarn 1 to be measured, in a state before the effect yarn 1 entangled with the core yarn 2 of the mohair yarn 6 is unwound and stretched.

[0071] <Number of filaments in filament 1> The number of single filaments of the effect yarn 1 of the mohair yarn 6 included in the knitted fabric of the present invention is preferably 10 or more and 100 or less. By setting the number of single filaments of the effect yarn 1 within the above range, the opening of the single filaments of the effect yarn 1 is less likely to be hindered, and the effect yarn 1 can be more easily uniformly dispersed and arranged in the gaps of the knitted fabric. The number of single filaments of the effect yarn 1 is more preferably 15 or more and 80 or less, from the viewpoint of promoting the opening of the single filaments and distributing the effect yarn 1 evenly and overall. Furthermore, a range of 20 or more and 60 or less is even more preferable as a well-balanced range, including an increase in the thickness of the knitted fabric.

[0072] <Fineness of Effect Thread 1> The effect yarn 1 of the mohair yarn 6 included in the knitted fabric of the present invention preferably has a total fineness of 70 dtex or more and 400 dtex or less. By setting the total fineness of the effect yarn 1 within this range, when used as stuffing, it has sufficient resistance to support the side fabric, and it becomes easier to ensure bulkiness as a textile product. The total fineness of the effect yarn 1 is more preferably 80 dtex or more and 350 dtex or less, which allows for a lightweight product with excellent bulkiness.

[0073] Fineness can be determined by measuring in accordance with JIS L1013:2021 "Testing Methods for Chemical Fiber Filament Yarns." When checking the product, it can be obtained as a value calculated from the fiber diameter, number of filaments, and density determined for a single fiber, or as a value calculated from the mass per 10,000 m of the fiber, calculated from the simple average of multiple measurements of the mass per unit length.

[0074] [Manufacturing method of Mole Yarn 6] In the present invention, the mohair yarn 6 can be produced using a conventionally known mohair yarn twisting machine, for example, the mohair yarn twisting machine disclosed in Japanese Patent Application Laid-Open No. 53-6642.

[0075] [Method for manufacturing knitted fabric] The knitted fabric of the present invention, including the basic weave and modified weave, can be produced using a conventionally known circular knitting machine or weft knitting machine.

[0076] [Uses of knitted fabrics] The knitted fabric of the present invention can be used in a variety of forms to produce a variety of textile products, including general clothing, sportswear, clothing materials, bedding such as quilts, mattresses, and thin blankets, sleeping bags, interior products such as carpets, sofas, and curtains, various decorative materials, stuffed toys, and vehicle interior products such as car seats.

[0077] The knitted fabric of the present invention has the property of effectively suppressing heat transfer. Therefore, it can be used in sheet form by filling products, and is suitable as stuffing for clothing and bedding. Here, the term "stuffing" as used in the present invention refers to stuffing for various sewn products, such as padding used in clothing and wadding used in bedding.

[0078] By using the knitted fabric of the present invention as stuffing, it is possible to obtain a textile product that is excellent in breathability and heat retention durability against washing, and that has a high degree of compatibility between moderate heat retention and other functionality, and whose functionality is maintained even after repeated washing.

[0079] In the present invention, the basis weight and various properties of the knitted fabric can be easily adjusted according to the intended use and performance. In addition to the knitted fabric of the present invention, other filling materials that can be used for filling can also be used in combination, and filling materials that combine the characteristics of materials other than the knitted fabric of the present invention can be obtained. [Example]

[0080] The knitted fabric of the present invention and its effects will be specifically described below with reference to examples. In the examples and comparative examples, the following evaluations were carried out.

[0081] A. Fineness of effect yarn 1, core yarn 2, pressing yarn 3, fusion yarn 4 and mohair yarn 6 For effect yarn 1, core yarn 2, presser yarn 3, and fused yarn 4, the mass of 100m was measured and multiplied by 100 to calculate the fineness in accordance with JIS L1013:2021 "Testing Methods for Chemical Fiber Filament Yarns." For mohair yarn 6, the mass of 1m was measured and multiplied by 10,000 to calculate the fineness. For effect yarn 1, core yarn 2, presser yarn 3, fused yarn 4, and mohair yarn 6, measurements were each repeated 10 times, and the simple average value rounded to the nearest decimal place was used as the fineness (dtex) of the fiber.

[0082] B. Curvature radius of crimp of filament 1 Feather yarn 1 was collected from mohair yarn 6 and prepared according to the sample preparation method of JIS L1015:2021 "Test Methods for Chemical Fiber Staples," section 8.12.1, "Evaluation of Crimp Number." A section line was drawn on a piece of smooth, glossy black paper with a 25 mm clearance. Samples of intact feather yarn 1 were collected from several locations on the paper, each with a 25 ± 5% slack relative to the clearance, and each sample was attached with adhesive at both ends. For short fibers, samples were prepared by placing the fibers on the paper and pressing them down with a transparent plate such as a glass plate. A single filament of feather yarn 1 prepared as described above was placed on the observation stage and photographed from above using a digital microscope (Keyence Corporation, "VHX-6000") at 20x magnification, allowing for observation of the crimp morphology. For this photographed image, a measurement function of a digital microscope was used to draw a radius measurement circle 8 along the curved portion 7 formed by the fiber having a spiral structure, and the radius of the curved portion 7 was determined. The radius was measured for a total of 100 curved portions 7, and the simple average value was rounded to one decimal place to obtain the radius of curvature (mm) of the crimp of the effect yarn 1.

[0083] C. Protruding length of filament 1 after elongation T2, ratio of filament 1 length before and after elongation T1 / T2 The mohair yarn 6 was attached to black paper, the effect yarn 1 entangled with the core yarn 2 was unwound, the effect yarn 1 was stretched and fixed in a direction perpendicular to the core yarn 2, a center line was set at the center of the core yarn 2, and the length from the center line to the tip of the effect yarn 1 was measured. This was repeated for 10 points on the effect yarn 1, and the simple average value was rounded to one decimal place, which was taken as the protruding length T2 (mm) of the effect yarn 1 after stretching.

[0084] Furthermore, mohair yarn 6 was collected, and before the effect yarn 1 entangled with the core yarn 2 was unwound and stretched, the vertical distance from the fiber axis of the core yarn 2 to the end of the effect yarn 1 to be measured was measured. This was repeated for 10 arbitrary points on the effect yarn 1, and the simple average value was rounded to one decimal place to obtain the protruding length T1 (mm) before stretching of the effect yarn 1. Next, the length before stretch T1 / length after stretch T2 was calculated, and the simple average value was rounded to one decimal place to obtain the length ratio before and after stretch T1 / T2.

[0085] D. Average circle diameter of equivalent stitch area As in B, a digital microscope was used to photograph the surface of the knitted fabric where the stitches of the knitted structure could be seen, with the observation magnification set to 20x, and 10 random images were taken so that the observation fields did not overlap in the warp and weft directions. 2 The number of stitches in the knitting structure included in the evaluation range was counted, and the evaluation area was divided by the number of stitches to calculate the area of ​​one stitch, and the diameter of a circle having the same area as that area was calculated.

[0086] The above procedure was carried out for 10 images taken so that the evaluation ranges did not overlap, and the simple average value of the 10 images was rounded to one decimal place to obtain the average circular diameter (mm) of the stitch equivalent area.

[0087] E. Knitted fabric count A single piece of knitted fabric was placed with the course direction of the stitches facing horizontally and the wale direction facing vertically, and the knitted fabric was then cut into 1m square pieces with the fabric evenly spread out, and the mass was measured. This process was repeated for five points, and the simple average value was rounded to the nearest tenth to determine the weight of the knitted fabric (g / m 2) was decided.

[0088] F. Thickness and thickness retention rate of cushions A commercially available 44 dtex nylon fabric was used for the outer and inner linings, and the knitted fabric of the present invention was filled in. Quilting stitches were made in parallel in one direction with a quilting stitch pitch of 10 cm, and the edges of the fabric were sewn together to make a 40 cm square cushion. A 40 cm square thin plate (initial load 0.025 g / cm) was placed on the cushion. 2 ) was placed on the plate, and the height of the square of the thin plate was measured after one minute, and the simple average value was calculated.

[0089] Measurement was repeated five times for each sample, and the simple average value was rounded to the nearest tenth to determine the thickness of the cushion, T0 (mm).

[0090] In addition, the cushion was washed in accordance with JIS L1930:2014 "Home Washing Test Methods for Textile Products" under the washing operation conditions No. C4M of the home washing machine method, and then dried according to 10.1.1 A "Hang-drying". After repeating this washing and drying process 20 times, the cushion's thickness was measured as described above, and the thickness after 20 washes was recorded as T. 20 (mm). And, the thickness retention rate is (T 20 / T0) × 100 (%).

[0091] G. Heat retention and heat retention rate The clo value of the cushions prepared in F. above was measured using an ASTM type heat retention tester in accordance with ASTM D 1518-85 in a test room with a temperature of 20°C and a relative humidity of 65%RH (L0). The clo value before washing was taken as L0. The clo value of the cushions after washing 20 times as described in F. was also measured, and the clo value after 20 washings was taken as L0. 20 And, the heat retention rate is (L 20 / L0) × 100(%).

[0092] H. Evaluation of the feel of the cushion after washing As described in F. above, the cushions after 20 washes were evaluated on the following four-point scale based on the feel when compressed from above with the hand and the feel when gripped.

[0093] A: Excellent bulk and flexibility, with an excellent texture that does not feel like a foreign object B: Good texture with bulk and flexibility C: Hard, but not too hard to the touch D: Hard and has a foreign body feel to it.

[0094] Example 1 <Preparing the core thread 2, holding thread 3, and fusion thread 4> The core yarn 2 and the presser yarn 3 were each made of nylon 66 (N66) fiber ("Promilan" (registered trademark) manufactured by Toray Industries, Inc., total fineness 44 dtex-34 filament (hereinafter sometimes referred to as 44T-34f), Breria yarn), and the fusion yarn 4 was made of polyamide-based fusion yarn (copolymerized polyamide fiber (copolymerized Ny): "Elder" (registered trademark) 78T-24f manufactured by Toray Industries, Inc.).

[0095] <Preparing filament 1> Polyethylene terephthalate (PET, intrinsic viscosity IV 0.6 dl / g, crystallization temperature 150°C) was melted at 290°C, metered using a gear pump, and then introduced into a spinning pack. The material was then extruded through a hollow-section nozzle (Figure 6(e)) with three concentrically arranged slits (0.1 mm wide). The extruded yarn was cooled and solidified by blowing 20°C cooling air from one side at a flow rate of 30 m / min. Afterwards, a spinning oil was applied, and the undrawn yarn was wound up at a spinning speed of 1500 m / min. The wound undrawn yarn was then drawn between rollers heated to 90°C and 140°C at a drawing speed of 800 m / min. Two hollow fibers (40T-12f, hollow ratio 30%) made of polyethylene terephthalate were then doubled to form the effect yarn 1.

[0096] <Making Mohair Yarn 6> Using a conventionally known mohair yarn twisting machine, the ratio of the supply speed of the core yarn 2 and presser yarn 3 to the supply speed of the effect yarn 1 was set to 1:19, and the effect yarn 1 was supplied to the flyer section, and the fusion yarn 4 was added to the presser yarn 3, and the core yarn 2 and presser yarn 3 were supplied from two directions. The effect yarn 1 was wound around a guide piece 30 mm wide and long at the bottom end, and the effect yarn 1 was cut with a cutter and sandwiched between the core yarn 2 and presser yarn 3. The twists per meter were adjusted to 600 T / m, twisted together, and wound around a spindle.

[0097] Next, the mohair yarn 6 was wound into skeins of 200 g each using a skein winding machine, the skeins were hooked onto a rod of a transport cart equipped with a skein hooking rod, and the skeins were placed in a pressurized steam heat treatment furnace and subjected to pressurized steam treatment at 98°C for 20 minutes, thereby melting the fusion yarns 4 and fusion-fixing the effect yarns 1 to obtain mohair yarn 6. The obtained mohair yarn 6 was cut to a length of 1 m, and the mass was measured. This was multiplied by 10,000 to calculate the fineness. This measurement was repeated 10 times, and the simple average value was rounded to one decimal place to find that the fineness of the mohair yarn 6 was 1,752 dtex.

[0098] <Production and evaluation of knitted fabrics> The above-mentioned mohair yarn 6 and 44T-10f nylon 6 fiber as the ground yarn 5 were used, and a conventionally known circular knitting machine (knitting kettle diameter: approximately 75 cm, 7 gauge) was used to knit the fabric by inlay knitting with an insertion ratio of the mohair yarn 6 to the ground yarn 5 of 2:1 in the wale direction of the knitted fabric, i.e., one mohair yarn 6 was inserted for every two ground yarns 5, and the fabric had a basis weight of 52 g / m 2 I got the knitting.

[0099] The cushion made using the knitted fabric of Example 1 has a low basis weight and feels lightweight. The cushion thickness T0 before washing was 8.0 mm, and the cushion thickness T 20 The thickness was 7.3 mm, and the thickness retention rate before and after washing was 91.3%, so the cushion maintained a sufficient thickness even after washing. In addition, the clo value L0 before washing was 0.82, and the clo value L 20The thermal insulation value was 0.78, and the heat retention rate before and after washing was 95.1%. As with the thickness, there was little loss of heat retention. After 20 washes, the cushion had excellent bulk and flexibility, and had an excellent feel with no foreign body sensation. The results are shown in Table 1.

[0100] Example 2 In processing the mohair yarn 6, the width of the lower end of the guide piece around which the effect yarn 1 is wound was changed to 10 mm, and the number of windings around the guide piece was adjusted to three times that of Example 1. Except for this, mohair processing was carried out in the same manner as in Example 1, and a mohair yarn 6 was obtained in which the protruding length T2 of the effect yarn 1 after elongation was 5.1 mm.

[0101] Thereafter, knitted fabrics and cushions were produced in the same manner as in Example 1.

[0102] The cushion made using the knitted fabric of Example 2 was thinner because the protruding length T2 of the effect yarn 1 of the mohair yarn 6 after stretching was shorter, but it had a low basis weight and felt lightweight. The cushion's thickness retention rate before and after washing was 94.3%, and its heat retention rate before and after washing was 97.3%, showing little decrease in both thickness and heat retention. Furthermore, the cushion after washing had a springy feel due to the large number of effect yarns 1 and their dense arrangement, and had a good tactile feel with bulkiness and flexibility. The results are shown in Table 1.

[0103] Example 3 In processing the mohair yarn, the width of the lower end of the guide piece around which the effect yarn 1 is wound was changed to 20 mm, and the number of windings around the guide piece was adjusted to 1.5 times that of Example 1. Except for this, mohair processing was carried out in the same manner as in Example 1, and a mohair yarn 6 was obtained in which the protruding length T2 of the effect yarn 1 after elongation was 11.3 mm.

[0104] Thereafter, knitted fabrics and cushions were produced in the same manner as in Example 1.

[0105] The cushion made using the knitted fabric of Example 3 was thicker than that of Example 2, had a low basis weight, and felt lightweight. The cushion's thickness was retained at 93.8% before and after washing, and its heat retention was 96.1% before and after washing, showing little decrease in either thickness or heat retention. Furthermore, the cushion after washing had a moderate elasticity, excellent bulk and flexibility, and an excellent feel without any foreign body sensation. The results are shown in Table 1.

[0106] Example 4 In processing the mohair yarn, the width of the lower end of the guide piece around which the effect yarn 1 is wound was changed to 40 mm, and the number of windings around the guide piece was adjusted to 0.75 times that of Example 1. Except for this, mohair processing was carried out in the same manner as in Example 1, and a mohair yarn 6 was obtained in which the protruding length T2 of the effect yarn 1 after elongation was 21.4 mm.

[0107] Thereafter, knitted fabrics and cushions were produced in the same manner as in Example 1.

[0108] The cushion made using the knitted fabric of Example 4 was thick, had a low basis weight, and felt lightweight. The cushion's thickness was retained at 90.2% before and after washing, and its heat retention was 94.1% before and after washing, showing little decrease in both thickness and heat retention. Furthermore, the cushion after washing felt soft to the touch when compressed, had excellent bulk and flexibility, and had an excellent feel without any foreign body sensation. The results are shown in Table 1.

[0109] Example 5 Using the mohair yarn 6 of Example 1, inlay knitting was performed in the wale direction of the knitted fabric so that the insertion ratio of the mohair yarn 6 to the ground yarn 5 was 3:1, and the fabric had a basis weight of 32 g / m 2 A cushion was produced in the same manner as in Example 1, except that the knitted fabric was obtained.

[0110] The cushion made using the knitted fabric of Example 5 was thinner than that of Example 1, but had a lower basis weight and felt lighter. The cushion's thickness was retained at 86.8% before and after washing, and its heat retention was 94.8% before and after washing. Although the thickness decreased slightly, the loss in heat retention was minimal. Furthermore, the cushion after washing had excellent bulk and flexibility, and had an excellent feel without any foreign body sensation. The results are shown in Table 1.

[0111] Example 6 In processing the mohair yarn 6, the mohair processing was carried out in the same manner as in Example 1, except that the supply amount of the effect yarn 1 and the number of windings around the guide piece were 1.5 times that of Example 1, and a mohair yarn 6 having a fineness of 2620 dtex was obtained.

[0112] Next, in the wale direction of the knitted fabric, the insertion ratio of the mohair yarn 6 to the ground yarn 5 was set to 2:1, the movement amount of the knitting needle was narrowed, and the knitting was performed by inlay knitting with a tight stitch count of 87 g / m 2 Thereafter, cushions were produced in the same manner as in Example 1.

[0113] The cushion made using the knitted fabric of Example 6 felt sufficiently lightweight. The cushion's thickness was retained at 93.0% before and after washing, and its heat retention was 93.4% before and after washing, indicating little loss in thickness and heat retention. Furthermore, the cushion after washing had a moderate elasticity, excellent bulk and flexibility, and an excellent feel without any foreign body sensation. The results are shown in Table 1.

[0114] Example 7 In processing the mohair yarn, the amount of the effect yarn 1 supplied and the number of windings around the guide piece were doubled compared to Example 1, and mohair processing was carried out in the same manner as in Example 1, to obtain a mohair yarn 6 having a fineness of 3475 dtex.

[0115] Subsequently, knitting was carried out in the same manner as in Example 6, and the fabric was made into a fabric with a basis weight of 118 g / m 2 Thereafter, cushions were produced in the same manner as in Example 1.

[0116] The cushion made using the knitted fabric of Example 7 was thick, had a firm feel, and felt moderately light. The cushion's thickness was retained at 94.1% before and after washing, and its heat retention was 91.8% before and after washing, indicating little loss in thickness and heat retention. Furthermore, the cushion after washing had a springy feel and a good feel with bulk and flexibility. The results are shown in Table 1.

[0117] Example 8 For the effect yarn 1, a polymer was discharged from the hollow cross section discharge hole in the same manner as in Example 1, and the discharged yarn was cooled and solidified by blowing cooling air at 20°C from one side at a flow of 75 m / min, and then a hollow fiber (44T-12f, hollow ratio 30%) made of polyethylene terephthalate was obtained in the same manner as in Example 1. Two of these were bundled together to use as the effect yarn 1, and mohair processing was performed in the same manner as in Example 1 to obtain a mohair yarn 6 having a radius of curvature of the effect yarn 1 of 0.7 mm and a fineness of 1761 dtex.

[0118] Thereafter, knitted fabrics and cushions were produced in the same manner as in Example 1.

[0119] The cushion made using the knitted fabric of Example 8 had a low basis weight and felt lightweight. The cushion's thickness was retained at 93.4% before and after washing, and its heat retention was 96.2% before and after washing, showing little decrease in either thickness or heat retention. Furthermore, the cushion after washing had excellent bulk and flexibility, and had an excellent feel without any foreign body sensation. The results are shown in Table 1.

[0120] Example 9 For the effect yarn 1, a polymer was discharged from the hollow cross section discharge hole in the same manner as in Example 1, and the discharged yarn was cooled and solidified by blowing cooling air at 20°C from one side at a flow of 25 m / min, and then a hollow fiber (44T-12f, hollow ratio 30%) made of polyethylene terephthalate was obtained in the same manner as in Example 1. Two of these were bundled together to use as the effect yarn 1, and mohair processing was performed in the same manner as in Example 1 to obtain a mohair yarn 6 having a radius of curvature of the effect yarn 1 of 2.5 mm and a fineness of 1754 dtex.

[0121] Thereafter, knitted fabrics and cushions were produced in the same manner as in Example 1.

[0122] The cushion made using the knitted fabric of Example 9 had a low basis weight and felt lightweight. The cushion's thickness was retained at 90.2% before and after washing, and its heat retention was 94.0% before and after washing, showing little decrease in either thickness or heat retention. Furthermore, the cushion after washing had excellent bulk and flexibility, and had an excellent feel without any foreign body sensation. The results are shown in Table 2.

[0123] Example 10 For the effect yarn 1, a polymer was discharged from the hollow cross section discharge hole in the same manner as in Example 1, and the discharged yarn was cooled and solidified by blowing cooling air at 20°C from one side at a flow of 20 m / min, and then a hollow fiber (44T-12f, hollow ratio 30%) made of polyethylene terephthalate was obtained in the same manner as in Example 1. Two of these were bundled together to use as the effect yarn 1, and mohair processing was performed in the same manner as in Example 1 to obtain a mohair yarn 6 having an effect yarn 1 with a curvature radius of 4.5 mm and a fineness of 1755 dtex.

[0124] Thereafter, knitted fabrics and cushions were produced in the same manner as in Example 1. The cushion produced using the knitted fabric of Example 10 was thick, soft to the touch, and had a low basis weight, giving it a lightweight feel. The cushion thickness retention rate before and after washing was 89.7%, and the heat retention rate before and after washing was 90.7%. Although the thickness loss was slightly large, the loss in heat retention was minimal. Furthermore, the cushion after washing had a good feel with both bulk and softness. The results are shown in Table 2.

[0125] Example 11 Using the mohair yarn 6 of Example 1 and the same knitting machine as in Example 1, the mohair yarn 6 was arranged in a ratio of two ground yarns 5 to one in the wale direction of the knitted fabric, and plain knitting was performed to obtain the knitted fabric of Example 11.

[0126] Thereafter, cushions were produced in the same manner as in Example 1.

[0127] The cushion made using the knitted fabric of Example 11 was thin and had a firm feel, but had a low basis weight and felt lightweight. The cushion thickness retention rate before and after washing was 84.4%, and the heat retention rate before and after washing was 97.4%, indicating a small decrease in heat retention. Furthermore, after washing, although there was no foreign body sensation, the cushion felt even firmer than before washing. The results are shown in Table 2.

[0128] (Comparative Example 1) Using the mohair yarn 6 of Example 1, knitting was performed using a conventionally known single raschel machine (manufactured by Karl Mayer) and the number of warp needles was adjusted to obtain a 1G raschel knit. The ground yarn 5 of the raschel knit was the same 44T-10f nylon 6 fiber as in Example 1.

[0129] Thereafter, cushions were produced in the same manner as in Example 1.

[0130] The cushion made using the knitted fabric of Comparative Example 1 had a low basis weight and a lightweight feel. The cushion thickness retention rate before and after washing was 67.1%, and the heat retention rate before and after washing was 60.3%, showing a significant decrease in thickness and heat retention. In addition, the yarns in the Russell knit stitches became thicker due to their clumping, which felt like a foreign object, and the soft feel of the effect yarn 1 inside the stitches was reduced, resulting in an overall poor feel. The results are shown in Table 2.

[0131] Example 12 For the filament yarn 1 of mohair yarn 6, high-viscosity polyethylene terephthalate (PET1:IV 0.8 dl / g) as polymer A and low-viscosity polyethylene terephthalate (PET2:IV 0.5 dl / g) as polymer B were melted at 295°C, weighed, and poured into a spinning pack equipped with a composite spinneret. The resulting mixture was extruded to form a side-by-side composite cross section consisting of polymer A and polymer B (mass composite ratio: polymer A / polymer B = 50 / 50). Cooling air at 20°C was blown onto the extruded yarn at a flow of 20 m / min to cool and solidify it. After applying spinning oil, the undrawn yarn was wound up at a spinning speed of 1500 m / min. The wound undrawn yarn was drawn 3.0 times between rollers heated to 90°C and 140°C at a drawing speed of 800 m / min to form two composite fibers (40 dtex-12f), which were then combined to form effect yarn 1. This was subjected to mohair processing in the same manner as in Example 1, and mohair yarn 6 having a curvature radius of 0.3 mm and a fineness of 1735 dtex was obtained.

[0132] Thereafter, knitted fabrics and cushions were produced in the same manner as in Example 1.

[0133] The cushion made using the knitted fabric of Example 12 had a low basis weight and felt lightweight. The cushion thickness retention rate before and after washing was 64.3%, and the heat retention rate before and after washing was 71.8%, showing a significant decrease in both thickness and heat retention. In addition, the cushion after washing had many tangled areas of the effect yarn 1, which felt foreign and gave it an unsatisfactory feel. The results are shown in Table 2.

[0134] Example 13 For the effect yarn 1, a polymer was discharged from the hollow cross section discharge hole in the same manner as in Example 1, and the discharged yarn was cooled and solidified by blowing cooling air at 20°C from one side at a flow of 15 m / min, and then a hollow fiber (44T-12f, hollow ratio 30%) made of polyethylene terephthalate was obtained in the same manner as in Example 1. Two of these were bundled together to use as the effect yarn 1, and mohair processing was performed in the same manner as in Example 1 to obtain a mohair yarn 6 having a radius of curvature of the effect yarn 1 of 7.0 mm and a fineness of 1758 dtex.

[0135] Thereafter, knitted fabrics and cushions were produced in the same manner as in Example 1.

[0136] The cushion made using the knitted fabric of Example 13 was thick and soft to the touch, with a low basis weight and a lightweight feel. The cushion thickness retention rate before and after washing was 74.2%, and the heat retention rate before and after washing was 77.1%, showing a significant decrease in thickness and heat retention. Furthermore, after washing, although there was no foreign body sensation, the cushion felt harder to the touch than before washing. The results are shown in Table 2.

[0137] (Reference example 1) Using the mohair yarn 6 of Example 7, inlay knitting was performed in the wale direction of the knitted fabric with an insertion ratio of the mohair yarn 6 to the ground yarn 5 of 1:1, and the fabric had a basis weight of 158 g / m 2 I got the knitting.

[0138] Thereafter, cushions were produced in the same manner as in Example 1. The results are shown in Table 2.

[0139] Example 14 For the effect yarn 1, a polymer was discharged from the discharge hole having the shape shown in Fig. 6(a) in the same manner as in Example 1, and the discharged yarn was cooled and solidified by blowing cooling air at 20°C from one side at a flow of 40 m / min. Thereafter, a hollow fiber made of polyethylene terephthalate and having five protrusions on the outer periphery of the fiber cross section (hereinafter referred to as a penta-lobular hollow fiber; 110T-48f, hollow ratio 20%) was obtained in the same manner as in Example 1. This was used as the effect yarn 1, and mohair processing was carried out in the same manner as in Example 1, to obtain a mohair yarn 6 having a curvature radius of 1.2 mm and a fineness of 1765 dtex for the effect yarn 1.

[0140] Thereafter, in the same manner as in Example 1, a basis weight of 56 g / m 2A knitted fabric of Example 14 was obtained. A cushion was also produced in the same manner as in Example 1. The cushion produced using the knitted fabric of Example 14 was thicker than that of Example 1, had a low basis weight, and felt lightweight. The cushion's thickness retention rate before and after washing was 94.0%, and its heat retention rate before and after washing was 92.9%, meaning that there was little decrease in both thickness and heat retention. Furthermore, the cushion after washing had a moderate elasticity, excellent bulkiness and flexibility, and an excellent feel with no foreign body sensation. The results are shown in Table 3.

[0141] Example 15 Spun yarns (count 40 / 1) made of polyethylene terephthalate staple fibers were used as the core yarn 2 and the presser yarn 3, and mohair processing was carried out in the same manner as in Example 1 to obtain a mohair yarn 6 having a fineness of 1790 dtex.

[0142] Thereafter, the same procedure as in Example 1 was repeated to obtain a fabric with a basis weight of 59 g / m 2 A cushion was produced in the same manner as in Example 1.

[0143] The cushion made using the knitted fabric of Example 15 was thicker than that of Example 1, had a low basis weight, and felt lightweight. The cushion's thickness was retained at 95.1% before and after washing, and its heat retention was 95.2% before and after washing, showing little decrease in either thickness or heat retention. Furthermore, the cushion after washing had a moderate elasticity, excellent bulk and flexibility, and an excellent feel without any foreign body sensation. The results are shown in Table 3.

[0144] (Comparative Example 2) In processing mohair yarn 6, the width of the lower end of the guide piece around which the effect yarn 1 was wound was changed to 5 mm, and the number of windings around the guide piece was adjusted to three times that of Example 1. In addition, the mohair processing process speed was set to half that of Example 1 (1 m / min), and the twist number per meter was adjusted to 1200 T / m, and the yarns were twisted and wound around a spindle. Otherwise, mohair processing was performed in the same manner as in Example 1, and mohair yarn 6 was obtained, having a fineness of 1744 dtex and a protruding length T2 of the effect yarn 1 after stretching of 2.0 mm.

[0145] The mohair yarn 6 of Comparative Example 2 has a short length of the effect yarn 1, and similarly to Example 6, the insertion ratio of the mohair yarn 6 to the ground yarn 5 in the wale direction of the knitted fabric is set to 2:1, the movement amount of the knitting needle is narrowed, and the knitting is performed by inlay knitting with a tight stitch count of 145 g / m 2 Thereafter, cushions were produced in the same manner as in Example 1.

[0146] The cushion made using the knitted fabric of Comparative Example 2 had a short protruding length T2 of the effect yarn 1 of the mohair yarn 6 after stretching, resulting in a very small thickness. Furthermore, because the protruding length T2 of the effect yarn 1 after stretching was shorter than the average diameter of the stitch area converted into a circle, the knitted fabric had a high basis weight but many voids. The cushion thickness retention rate before and after washing was high at 93.3% due to the cushion's thinness before washing, but the heat retention rate before and after washing was low at 67.9%. When the cushion of Comparative Example 2 was cut open after washing and the knitted fabric was examined, a large amount of effect yarn 1 had fallen off. The knitted fabric of Comparative Example 2 was unsuitable as a filling in terms of both thickness and heat retention. Furthermore, the soft feel of the filling was absent, resulting in a hard, unsatisfactory feel. The results are shown in Table 3.

[0147] (Comparative Example 3) Using the same mohair yarn 6 as in Comparative Example 2, inlay knitting was performed in the wale direction of the knitted fabric with an insertion ratio of the mohair yarn 6 to the ground yarn 5 of 1:1, as in Reference Example 1, and a basis weight of 184 g / m 2 Thereafter, cushions were produced in the same manner as in Example 1.

[0148] The cushion made using the knitted fabric of Comparative Example 3 had a short protruding length T2 of the effect yarn 1 of the mohair yarn 6 after stretching, as in Comparative Example 2, and was very thin. Furthermore, because the protruding length T2 of the effect yarn 1 after stretching was shorter than the average diameter of the stitch area converted into a circle, the knitted fabric had a higher basis weight than Comparative Example 2 but many voids. The cushion thickness retention rate before and after washing was high at 93.8%, due to the thinness before washing, as in Comparative Example 2, but the heat retention rate before and after washing was low at 66.7%. When the cushion of Comparative Example 3 was cut open after washing and the knitted fabric was examined, much of the effect yarn 1 had fallen off, as in Comparative Example 2. The knitted fabric of Comparative Example 3 was unsuitable as a filling in terms of both thickness and heat retention. Furthermore, the soft feel of the filling was absent, and the fabric felt hard and unsatisfactory. The results are shown in Table 3.

[0149] [Table 1]

[0150] [Table 2]

[0151] [Table 3] [Explanation of symbols]

[0152] 1 Flower thread 2 core yarn 3 Presser thread 4. Fusible thread 5 Ground thread 6. Mohair Yarn 7 Curved section 8 Radius measurement circle S1: Area of ​​the circumscribed circle connecting the tips of the protrusions on the outer periphery of the fiber S2 Area of ​​solid part Protrusion length before elongation in T1 filament 1 Protrusion length after elongation in T2 filament 1

Claims

1. The knitted fabric contains mohair yarn and has a weight of 150 g / m ２ A knitted fabric having the following structure, wherein the protruding length T of the effect yarn constituting the mohair yarn after stretching is ２ is 5.0 mm or more, and the protruding length T ２ A knitted fabric whose area is longer than the average diameter of the circle equivalent to the stitch area.

2. The knitted fabric according to claim 1 , wherein the filament yarn is a fiber having crimps.

3. The knitted fabric according to claim 2, wherein the radius of curvature of the crimp of the effect yarn is 0.5 mm or more and 5.0 mm or less.

4. The protruding length of the filaments before elongation is T １ When the ratio of the filament length before and after elongation, T １ / T ２ The knitted fabric of claim 1 , wherein the σ is less than 1.

00.

5. 2. The knitted fabric according to claim 1, wherein the effect yarns are hollow fibers and have a hollow ratio of 10% or more in the fiber cross section.

6. The knitted fabric according to claim 1, which is an inlay knitting structure using the mohair yarn as an insert yarn.

7. A stuffing material using the knitted fabric according to any one of claims 1 to 6.

8. A textile product using the stuffing according to claim 7.

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