Fabric and clothes using same

Abstract

Provided are: a fabric capable of suppressing a decrease in bulkiness; and clothes using the same. To this end, a fabric according to the present invention comprises an antistatic yarn and a polyamide multifilament, wherein: the total fineness of the polyamide multifilament is 1.0-44.0 dtex; said fabric includes the antistatic yarn at least in a weft yarn; the antistatic yarn mixing ratio, represented by expression (1), of the antistatic yarn in said fabric is 4-15%; the electric specific resistance value of the antistatic yarn is 1.0×102 to 1.0×1010 Ω∙cm; and the friction-charged electrostatic potential in the JIS L 1094 (2020) B method is at most 3,000 V.

Description

Woven fabrics and clothing made from them

[0001] The present invention relates to a woven fabric, and a garment and a down garment using the same.

[0002] Synthetic fibers are widely used for lightweight, thin textiles used in industrial materials, sportswear, etc. In particular, clothing containing down or padding, such as windbreakers, down jackets, and down coats (hereinafter, clothing such as jackets and coats containing down or padding may be referred to as "down clothing"), requires fabrics that are lightweight, thin, and highly windproof, and textiles made from polyester or nylon fibers are widely used.

[0003] Here, woven fabrics used in down clothing are required to be thin and light, as well as have low breathability and high tear strength, and woven fabrics that satisfy these properties have been proposed (see, for example, Patent Document 1). Also proposed is a woven fabric that can maintain low breathability even after washing, and that particularly prevents down and padding from blowing out due to repeated wearing and washing (see, for example, Patent Document 2). Furthermore, a down fabric has also been proposed that is made by bonding a knitted and / or woven outer fabric with an elastomer lining film, thereby imparting not only downproof properties but also high mechanical strength and tear resistance due to the lining film (see, for example, Patent Document 3).

[0004] On the other hand, even if quilting is applied, unevenness will occur unless the down is packed evenly and sufficiently, and this unevenness will accelerate with washing, resulting in a decrease in heat retention.Therefore, there have been proposals to use a single layer of feathery cotton material made of synthetic resin material instead of down, or to layer this feathery cotton material in a sheet form (see, for example, Patent Document 4).

[0005] JP 2005-48298 A JP 2018-12899 A JP 2013-231254 A JP 2016-211107 A

[0006] The above-mentioned Patent Document 1 describes that polyamide multifilament is preferable in terms of strength, dimensional stability, lightness, cost, etc. However, there is a problem of reduced bulkiness, particularly in winter, etc. For example, the above-mentioned Patent Documents 2 and 3 propose methods for suppressing down shedding, and Patent Document 4 proposes a method for eliminating down imbalance, but both focus on the shedding and imbalance of down and are insufficient to suppress the reduction in bulkiness.

[0007] In view of the above background, an object of the present invention is to prevent a decrease in bulkiness when used in clothing, particularly down clothing, etc.

[0008] The present invention has the following configuration: (1) A woven fabric containing an antistatic yarn and a polyamide multifilament, wherein the polyamide multifilament has a total fineness of 1.0 to 44.0 dtex, the woven fabric contains the antistatic yarn at least in a weft, the antistatic yarn blending rate in the woven fabric represented by the following formula (1) is 4 to 15%, and the electrical resistivity of the antistatic yarn is 1.0 x 10 ２ ~1.0 x 10 １０ A woven fabric having a resistance to static electricity of Ω·cm and a frictional electrification voltage of 3000 V or less according to JIS L 1094 (2020) Method B. Antistatic yarn blend ratio = C / (A + B + C)...Equation (1) In equation (1), A is the product of the warp fineness and the warp density of the fabric, B is the product of the fineness of the weft yarns other than the antistatic yarn, the weft density of the fabric, and the arrangement ratio, and C is the product of the fineness of the antistatic yarn, the weft density of the fabric, and the arrangement ratio. The arrangement ratio is the ratio of the number of each weft yarn to the total number of weft yarns. (2) A woven fabric according to (1) above, in which the weave of the woven fabric is a plain weave. (3) A woven fabric according to (1) or (2) above, in which the half-life according to JIS L 1094 (2020) Method A is less than 5 seconds. (4) The woven fabric according to any one of (1) to (3) above, wherein the tensile strength of the polyamide multifilament is 5.5 cN / dtex or more. (5) The woven fabric according to any one of (1) to (4) above, wherein a cushion made from the woven fabric has a Clo value of 1.6 or more. (6) The woven fabric according to any one of (1) to (5) above, wherein the cover factor is 1600 or more. (7) The breathability defined in JIS L 1096 (2020) Method A is 1.0 cm ３ / cm２ seconds or less, and the breathability after 5 washes as specified in JIS L 1093 (2014) C4N method is 1.5 cm ３ / cm ２ (10) A garment comprising the woven fabric according to any one of (1) to (9) above. (11) A down garment comprising the woven fabric according to any one of (1) to (9) above. (12) A woven fabric according to any one of (1) to (9) above, having a tear strength of 6.0 N or more as defined in JIS L 1096 (2020) D method. (13) A woven fabric according to any one of (1) to (9) above, having a tear strength of 6.0 N or more as defined in JIS L 1096 (2020) D method. (14) A woven fabric according to any one of (1) to (9) above, wherein the antistatic yarn is contained only in the weft yarn of the woven fabric. (15) A garment comprising the woven fabric according to any one of (1) to (9) above. (16) A down garment comprising the woven fabric according to any one of (1) to (9) above.

[0009] According to the present invention, it is possible to provide a woven fabric that can suppress a decrease in bulkiness of clothing and the like, and clothing using the same.

[0010] Fig. 1 is a schematic diagram showing a cushion for fabric evaluation, and Fig. 2 is a schematic diagram showing a method for measuring quilt height.

[0011] The preferred application of the woven fabric of the present invention is clothing, particularly down clothing. In down clothing, the bulkiness of down (feathers) and batting (hereinafter, down and batting may be collectively referred to as "down, etc.") decreases with repeated wearing. This is thought to occur because static electricity or other factors cause the down, etc., to be attracted to each other or to the fabric, resulting in uneven distribution of the down, etc. within the quilt. This uneven distribution of the down, etc., can result in insufficient expansion of the quilt, reducing the warmth retention of the clothing, or increasing the amount of down, etc. blowing out in areas where the down, etc. is densely packed.

[0012] The woven fabric of the present invention contains an antistatic yarn and a polyamide multifilament. While polyester fibers and polyamide fibers are widely used in woven fabrics due to their strength, cost, and ease of thinning, the woven fabric of the present invention contains a polyamide multifilament because it is less likely to become charged than polyester fibers and is easier to fold. Even polyamide multifilaments are prone to static electricity in low-temperature, low-humidity winter environments. With the recent trend toward thinner fabrics, static electricity is more likely to be generated. Therefore, the woven fabric of the present invention further contains an antistatic yarn.

[0013] The total fineness of the polyamide multifilament in the woven fabric of the present invention is 44.0 dtex or less. 40.0 dtex or less is preferred. A fineness exceeding the above range is undesirable because the woven fabric tends to become stiff in bending. In order to maintain the tear strength of the woven fabric, the total fineness is 1.0 dtex or more. 5.0 dtex or more is preferred. In addition, the single yarn fineness of the polyamide multifilament is preferably 1.4 dtex or less. By setting the single yarn fineness to 1.4 dtex or less, breathability can be further suppressed. In order to achieve excellent tear strength, dyeability, and operability during spinning of the woven fabric, the single yarn fineness is preferably 0.3 dtex or more.

[0014] The tensile strength of the polyamide multifilament in the woven fabric of the present invention is preferably 5.5 cN / dtex or more, more preferably 6.0 cN / dtex or more. Since antistatic yarns have a relatively low tensile strength compared to normal yarns, the tensile strength of the polyamide multifilament is preferably set to the above range or higher. By setting the tensile strength within the above range, it becomes easy to make the fabric thinner, and it becomes easier to control the antistatic properties by increasing the mixing ratio of antistatic yarns, thereby further suppressing the decrease in bulkiness. The upper limit is not particularly limited, but is usually 15.0 cN / dtex or less.

[0015] The polyamide constituting the polyamide multifilament of the present invention is a resin composed of a high molecular weight substance in which so-called hydrocarbon groups are linked to the main chain via amide bonds, and such polyamides have excellent spinnability and mechanical properties. Polycaproamide (nylon 6) and polyhexamethylene adipamide (nylon 66) are primarily preferred. Other preferred examples include nylon 46, nylon 9, nylon 610, nylon 11, nylon 12, and nylon 612. The tensile strength is measured in accordance with JIS L 1013 (2010) 8.5. Specifically, it is measured by the method described in the Examples.

[0016] The woven fabric of the present invention contains an antistatic yarn at least in the weft. It is preferable to use a border-style weave in which the antistatic yarn is arranged in part of the weft of the woven fabric. Generally, many methods have been proposed to impart antistatic properties to woven fabrics, such as adding an antistatic agent to fibers or fabrics through post-processing, or using antistatic yarn. However, from the perspective of washability, the woven fabric of the present invention contains antistatic yarn. The antistatic yarn is not particularly limited as long as it has antistatic properties compared to ordinary homopolymers. Examples include core-sheath conductive yarns and yarns in which conductive yarns are coated with non-conductive processed yarns, as described in JP 2021-161578 A. The antistatic yarn in the woven fabric of the present invention has antistatic properties and exhibits an electrical resistivity value within the range of the present invention. Furthermore, by including it in at least the weft, a decrease in the strength of the woven fabric can be suppressed. While the antistatic yarn may also be included in the warp, from the perspective of woven fabric strength, it is preferable that the mass of the antistatic yarn is greater in the weft than in the warp, and it is more preferable to include the antistatic yarn only in the weft.

[0017] The total fineness of the antistatic yarn in the woven fabric of the present invention can be set arbitrarily depending on the application. For example, a total fineness of 5.0 to 44.0 dtex is preferred for a woven fabric suitable for use as a lining for down clothing. The single yarn fineness can also be set arbitrarily depending on the product requirements. From the viewpoint of thinness, lightness, softness, and low breathability of the woven fabric, a fineness of 5.0 dtex or less is preferred, and a fineness of 3.0 dtex or less is more preferred. On the other hand, from the viewpoint of strength, a fineness of 0.9 dtex or more is preferred, and a fineness of 1.3 dtex or more is more preferred. Because antistatic yarns tend to have lower strength than normal yarns, the single yarn fineness is often increased in order to maintain strength in the woven fabric. However, a smaller single yarn fineness results in lower breathability of the woven fabric, making it more suitable for use as a lining for down clothing, for example.

[0018] The tensile strength of the antistatic yarn is preferably 3.5 cN / dtex or more, more preferably 4.0 cN / dtex or more. By setting it in this range, excellent tear strength of the woven fabric can be obtained, and the woven fabric can be made more suitable for clothing applications such as outerwear and sportswear. The upper limit is not particularly limited, but is usually 10.0 cN / dtex.

[0019] The antistatic yarn in the woven fabric of the present invention has an electrical resistivity of 1.0×10 ２ ~1.0 x 10 １０ The electrical resistivity is 1.0 x 10 ８ It is preferably Ω cm or less, and 1.0 × 10 ７ It is more preferable that the specific electrical resistance is Ω·cm or less. By setting the specific electrical resistance in this range, the woven fabric can obtain excellent antistatic properties and can suppress a decrease in bulkiness. The specific electrical resistance value of general polyamide fibers is about 1.0×10 １４ In addition, the electrical resistivity is 1.0 × 10 ２ Ω cm or more, and 1.0 × 10 ３Preferably, it is Ω·cm or more. The electrical resistivity in the present invention is measured using the value at a temperature of 20°C and a humidity of 40% RH in accordance with the method specified in JIS C 2139-3-2 (2018) Solid Electrical Insulating Materials: Measurement Method for Volume Resistivity and Surface Resistivity. Because static electricity is likely to be generated in a dry environment, the value under these conditions is used. Specifically, it can be measured by the method described in the Examples below.

[0020] The antistatic yarn blending ratio in the woven fabric of the present invention is 4 to 15%. By setting the blending ratio in this range, excellent antistatic properties can be obtained and a decrease in bulkiness can be suppressed. If the blending ratio of antistatic yarn exceeds 15%, antistatic properties can be obtained, but the tear strength of the woven fabric will be low. It is preferably 13% or less, more preferably 11% or less. If the blending ratio of antistatic yarn is less than 4%, the required tear strength can be obtained, but satisfactory antistatic properties cannot be obtained, which is not preferred. It is preferably 5% or more, more preferably 6% or more. The antistatic yarn blending ratio in the present invention is the value obtained by the following formula (1). When the weft contains two types of yarn other than antistatic yarn, B in the following formula (1) is read as B1 + B2. Similarly, when two types of antistatic yarn are contained, C in the following formula (1) is read as C1 + C2. The same applies to three or more types. The density of a woven fabric can change after weaving, dyeing, finishing, and sewing. In the present invention, it is sufficient that the range of the present invention is satisfied at least in one stage. However, in terms of ease of control and confirmation of the effect, the above range is preferably set for the woven fabric after finishing or sewing, and more preferably after finishing. Antistatic yarn blend ratio = C / (A+B+C)...Equation (1) A: warp fineness × warp density of woven fabric B: weft fineness other than antistatic yarn × weft density of woven fabric × arrangement ratio C: antistatic yarn fineness × weft density of woven fabric × arrangement ratio Here, the arrangement ratios B and C were calculated by counting the total number of weft yarns in the smallest unit of the woven fabric structure, then counting the number of yarns other than antistatic yarns and antistatic yarns, and dividing each number by the total number of weft yarns, and rounding the result to one decimal place. For example, if the ratio of yarns other than antistatic yarns to antistatic yarns is 9:1 in the smallest unit of the woven fabric structure, the arrangement ratio of yarns other than antistatic yarns is 0.9, and the arrangement ratio of antistatic yarns is 0.1. Specifically, it was determined by the method described in the Examples.

[0021] When the antistatic yarn blend ratio calculated by the above formula (1) is expressed as a percentage, the value is obtained by multiplying the antistatic yarn blend ratio by 100 and adding a percentage to the result.

[0022] The weave of the woven fabric of the present invention is preferably a plain weave, since it has excellent windproof properties, can suppress the blowing out of down, etc., and can reduce air permeability. Compared with other weaves such as twill and satin weaves, a plain weave has fewer floating warp threads and more intersections of threads, making it easier to reduce air permeability and is therefore preferred from the viewpoints of windproof properties and the escape of down, etc.

[0023] The cover factor of the woven fabric of the present invention is preferably 1600 or more, more preferably 1700 or more. When the cover factor is above the above range, it becomes easier to suppress breathability and the loss of down, etc. can be suppressed. The upper limit is preferably 2000 or less, more preferably 1900 or less. When the cover factor is below the above range, the woven fabric tends to be thin and soft. Furthermore, during weaving, problems such as warp fuzz and warp breakage can be suppressed, and a woven fabric of excellent quality can be obtained. Furthermore, since the weft placement density can be suppressed, productivity is also excellent. The cover factor can be determined by the method described in the examples.

[0024] The tear strength of the woven fabric of the present invention, as measured by JIS L 1096 (2020) 8.17.4 D method (pendulum method), is preferably 6.0 N or more, more preferably 6.9 N or more. By ensuring that the tear strength is within the above range or higher, tearing due to punctures by protrusions when the sewn product is worn, and tearing due to concentrated load or snagging on the sewn portion can be suppressed. The upper limit is not particularly limited, but is typically 20.0 N or less. It is preferable that the tear strength be within the above range at least in the warp or weft, but it is more preferable that the tear strength be within the above range in both the warp and weft directions. The higher the fiber strength and the higher the weave density, the higher the tear strength generally tends to be, and the tear strength can be adjusted to the range of the present invention by combining these appropriately.

[0025] The woven fabric of the present invention has an air permeability of preferably 1.0 cm according to JIS L 1096 (2020) 8.26.1A method (Fragile method). ３ / cm２ seconds or less, more preferably 0.8 cm ３ / cm ２ seconds or less, more preferably 0.6 cm ３ / cm ２ 1 / 2 seconds or less. If the breathability is within the above range, for example, when used in down clothing, the blowing out of down or the like can be further suppressed. In particular, in recent years, a method of directly sealing down or the like between the outer and inner layers of down clothing without using a down pack has been widely adopted, and this is a preferred embodiment for applying the woven fabric of the present invention. The lower limit is not particularly limited, but is usually 0.01 cm ３ / cm ２ Generally, the higher the weave density, the more the breathability tends to be suppressed, and in the present invention as well, after determining the fibers to be used, the breathability can be adjusted by appropriately designing the structure of the woven fabric.

[0026] Breathability also changes with use, such as increasing. Therefore, it is preferable to not only consider the fabric breathability when a sewn product is sold new, i.e., the initial breathability of the fabric, but also to suppress the increase in breathability caused by the movement and unevenness of the woven fabric intersections when the sewn product is washed at home or at a dry cleaner's, i.e., to suppress the breathability after washing as well as the breathability before washing. In addition, there are many practical situations in which the fabric is subjected to folding forces, such as repeated movements of the wearer when wearing the product or when down clothing for mountain climbing is compressed and folded for carrying, and it is preferable to provide breathability that takes this into account.

[0027] In the present invention, washing refers to washing according to the JIS L 1930 (2014) C4N method. The breathability after five washes refers to the breathability after five washes. Assuming that clothing is washed once a year and a product life of five years, the breathability of the fabric after five washes was used as an index. The breathability after five washes was 1.5 cm ３ / cm ２ Preferably 1.0 cm ３ / cm ２ seconds or less, more preferably 0.8 cm ３ / cm ２It is even more preferable that the breathability after washing is within the above range, which further reduces the blowing out of down and the like. If the breathability before washing is low, the breathability after washing tends to be low, but this reduction can be prevented by using a weave or density that is less likely to cause misalignment, by using a plain weave, by using high-multi yarn as the yarn, by applying a calendaring process in the finishing process, and the like.

[0028] The woven fabric of the present invention has a frictional withstand voltage of 3000 V or less according to JIS L 1094 (2020) Method B. It is preferably 1500 V or less, more preferably 1000 V or less. Typical polyamide fiber woven fabrics have a frictional withstand voltage of approximately 8000 V. In the present invention, by setting at least either the warp or weft, and preferably both the warp and weft, to within the above range, bulkiness can be maintained even in dry environments such as winter, resulting in clothing with excellent heat retention. Additionally, static cling and dust adhesion during wear can be suppressed. In other words, clothing that is particularly comfortable in winter can be provided. While the lower limit is not particularly limited, it is typically 0 V or more. Furthermore, the frictional electrification voltage after 20 washes according to JIS L 1930 (2014) C4N method is preferably 3000 V or less. It is more preferably 1000 V or less, and even more preferably 500 V or less. Setting the value within this range achieves high washing durability, thereby enabling the provision of clothing that maintains excellent comfort. Here too, the lower limit is usually 0 V or higher.

[0029] The woven fabric of the present invention preferably has a half-life of less than 5 seconds, more preferably less than 3 seconds, as measured by the JIS L 1094 (2020) A method. By setting the half-life within the above range, the fabric can maintain bulkiness even in dry environments such as winter, resulting in clothing with excellent heat retention. Additionally, static cling and dust adhesion during wear can be suppressed. This means that clothing that is particularly comfortable in winter can be provided. While the lower limit is not particularly limited, it is typically 0 seconds or more. Furthermore, the half-life after 20 washes as measured by the JIS L 1930 (2014) C4N method is preferably less than 5 seconds, more preferably 3 seconds or less. Setting the half-life within this range provides high washing durability, making it possible to provide clothing that maintains excellent comfort. Again, the lower limit is typically 0 seconds or more.

[0030] The Clo value of a cushion made from the woven fabric of the present invention is preferably 1.6 or higher, and more preferably 1.8 or higher. A Clo value above the above range allows for better bulkiness to be maintained even in a dry environment. While the upper limit is not particularly limited, it is typically 3.0 or lower. The Clo value corresponds to an evaluation under an environment and condition closer to that of the actual product. The Clo value is obtained by measuring the heat retention of a cushion using the method specified in ASTM D 1518-85 (2003). Here, a cushion is used that is 49 cm in diameter, 49 cm in weft, with a quilt pitch of 7 cm, and 30 g of down (90% down / 10% feather, down fill power 600) evenly filled into each quilt per cushion. Specific measurement methods are as described in the Examples. The Clo value tends to increase as the amount of air a cushion can contain increases. In the present invention, it is preferable to achieve the Clo value within the range of the present invention by using a flexible woven fabric for the cover and a fabric with electrostatic properties for the cover.

[0031] Next, a method for producing a woven fabric according to the present invention will be described. However, this method is not particularly limited and known methods can be appropriately employed. That is, polyamide multifilaments and antistatic yarns can be obtained by conventional methods such as spinning and drawing, followed by weaving, scouring, processing, and, if necessary, dyeing, advanced processing, coating, etc. Here, polyamide multifilaments having a tensile strength of 5.5 cN / dtex or more can be produced using known melt spinning devices, but for higher strength, production by a production process using direct draw spinning is preferred. For example, a polyamide resin is melted, and the polyamide polymer is metered and transported using a gear pump and finally extruded through discharge holes provided in a spinneret to form individual filaments. Each filament discharged from the spinneret in this manner is cooled and solidified to room temperature by blowing cooling air using a cooling device. Thereafter, an oil is applied in an oiling device and the individual filaments are bundled to form a multifilament, which is then entangled in a fluid entangling nozzle device, passed through a take-up roller and a stretching roller, and stretched in accordance with the ratio of the peripheral speeds of the take-up roller and the stretching roller.Furthermore, the yarn is heat-treated by heating on the stretching roller and wound up on a winding device, thereby producing a polyamide multifilament.

[0032] In the production process using the direct draw spinning method, it is preferable to actively heat the area directly below the spinneret surface and appropriately adjust the atmospheric temperature. This reduces thermal degradation of the polyamide polymer extruded during spinning and allows for relaxed orientation. The cooling device is preferably an annular cooling device that blows rectified cooling air from the outer periphery toward the center, or an annular cooling device that blows rectified cooling air from the center toward the outer periphery. By using a heating roller as the drawing roller, crystallization of the fiber due to heat treatment is promoted, thereby achieving high strength and suppressing strength loss due to thermal history in the dyeing process.

[0033] Furthermore, antistatic yarns can be produced by known melt spinning and conjugate spinning techniques, examples of which are as follows. For example, polyamide (sheath) and a thermoplastic polymer (core) having high moisture absorption properties are melted separately and metered and transported by a gear pump, and a conjugate flow is formed as is so as to have a core-sheath structure by a conventional method and discharged from a spinneret. The yarn is cooled to room temperature by blowing cooling air onto it using a yarn cooling device such as a chimney, oiled and focused using an oiling device, entangled in a first fluid entanglement nozzle device, passed through a take-up roller and a stretching roller, and stretched in accordance with the ratio of the peripheral speeds of the take-up roller and the stretching roller. The yarn is then heat-set by a stretching roller and wound up on a winder (winding device).

[0034] Furthermore, to achieve an electrical resistivity value within the range of the present invention, for example, a polyetheresteramide copolymer polymer can be added to the hygroscopic polymer of the core portion, or an antistatic agent, a hygroscopic polymer, carbon, or the like can be copolymerized or mixed with a polyamide. Furthermore, the arrangement of the hygroscopic polymer on the fiber cross section is not limited to the core-sheath structure described above; it can be side-by-side, a modified cross section, or other suitable arrangement, and the composition ratio can also be selected arbitrarily. It is known to combine a hygroscopic material with polyamide by copolymerization or core-sheath compounding to impart hygroscopicity. In the present invention, however, the composition of the antistatic yarn is controlled to achieve an electrical resistivity value within the range of the present invention. Generally, the electrical resistivity tends to decrease as the amount of the hygroscopic material increases. The frictional withstand voltage and half-life can be reduced by increasing the proportion of antistatic yarn, but it is preferable to appropriately adjust the arrangement ratio in the fabric to achieve the desired antistatic properties in relation to tensile strength, etc.

[0035] It is preferable to perform either single-sided or double-sided calendering on the woven fabric. Calendering reduces the gaps between the single yarns, suppressing the breathability of the fabric. However, the tear strength of the fabric may decrease or the texture may become hard, so it is preferable to adjust the temperature, pressure, and speed appropriately.

[0036] The woven fabric of the present invention is preferably used for clothing. Specifically, it is preferable to use the woven fabric in clothing. In particular, it is preferable to use the woven fabric in down clothing such as a down jacket or a down coat, that is, to use the woven fabric in down clothing, in that the effects of the woven fabric can be more effectively exhibited.

[0037] As a fabric for down clothing, it is particularly preferable to use it as a lining. The lining for down clothing is a fabric that sandwiches the padding or down and has a structure that prevents the padding or down from leaking.

[0038] The clothing of the present invention includes the above-described woven fabric of the present invention. Down clothing refers to clothing containing the woven fabric of the present invention and down or padding. The clothing of the present invention, particularly down clothing, preferably contains the woven fabric of the present invention in an amount of 20% by mass or more of the clothing mass. While the clothing may be, but is not limited to, rain jackets, rain pants, tops, bottoms, etc., the woven fabric of the present invention is particularly suitable for down clothing such as down jackets and down coats. Here, the woven fabric of the present invention is preferably used as a lining.

[0039] The present invention will be explained in more detail below with reference to examples. The measurement methods for the properties in the examples are as follows. Unless otherwise specified, the cushions used in the examples were obtained by the following methods.

[0040] (Cushion A) Using the fabric described in the Examples and Comparative Examples, the warp was 98 cm (length of one side of the cushion in Figure 1: 1), the weft was 98 cm (length of the other side of the cushion in Figure 1: 2), the quilt pitch was 7 cm (distance between quilts in Figure 1: 3), and 50 g of filling per cushion was evenly filled into each quilt. Figure 1 is a schematic diagram of a cushion used for fabric evaluation. The filling mixture ratio was 90% down / 10% feather, and the down fill power was 600.

[0041] (Cushion B) The cushion used for measuring the Clo value was similar to that shown in Figure 1, measuring 49 cm in length, 49 cm in width, and 7 cm in quilt pitch. 30 g of filling per cushion was evenly distributed across each quilt. The filling was a mixture of 90% down and 10% feather, with a down fill power of 600.

[0042] (1) Fineness, Single Yarn Fineness Measurements were performed according to JIS L 1013 (2010) 8.3.1A, with the following modifications. A fiber sample was wound 400 times around a measuring machine with a frame circumference of 1.125 m at a tension of 1 / 30 cN x nominal decitex to produce a hank. The hank was dried at 105°C for 60 minutes, transferred to a desiccator, and allowed to cool for 30 minutes in an environment of 20°C and 55% RH. The mass per 10,000 m was calculated from the weight obtained. For nylon 6, the total fineness of the fiber was calculated using an official moisture regain of 4.5%. Measurements were performed four times, and the average value was used as the total fineness. The single fineness was determined by dividing the obtained total fineness by the number of filaments. The fineness of the yarn extracted from the woven fabric was measured according to the H. method described in Appendix H of JIS L 1096 (2010). Measure in accordance with Method 9.1A. If both are possible, use the value obtained by the former.

[0043] (2) Tensile strength The tensile strength-elongation curves were drawn for the raw yarn and the decomposed yarn in accordance with JIS L 1013 (2010) 8.5 Tensile strength and elongation. The test conditions were a constant speed extension type tester, a grip distance of 50 cm, and a pulling speed of 50 cm / min. If the tensile strength at break was smaller than the maximum strength, the maximum tensile strength was measured. The tensile strength was calculated using the following formula: Strength (cN / dtex) = Tensile strength at break (cN) / Fineness (dtex).

[0044] (3) Cover Factor (CF) The cover factor (CF) of the fabric was calculated using the following formula: CF = Dwp x (Fwp) １／２ + Dwt × (Fwt) １／２ [In the formula, Dwp represents the warp density of the fabric (counts / 2.54 cm), Dwt represents the weft density of the fabric (counts / 2.54 cm), and Fwp and Fwt represent the thickness (decitex) of the warp and weft yarns constituting the fabric].

[0045] (4) Electrical Resistivity Value The electrical resistivity value was measured in accordance with the volume resistivity measurement method specified in JIS C 2139-3-2 (2018) Solid Electrical Insulating Materials: Measurement Methods for Volume Resistivity and Surface Resistivity. The values ​​were measured under conditions of an ambient temperature of 20°C and humidity of 40% RH. The fiber sample was thoroughly scoured in a weakly alkaline aqueous solution of 0.2% by weight of anionic surfactant to remove oil and other additives, then thoroughly rinsed and dried. The sample was then spun into a fiber bundle with a length (L) of 5 cm and a total fineness (D) of 2200 dtex, and left to stand for two days at a temperature of 20°C and humidity of 40% RH. After that, the resistance of the sample was measured at an applied voltage of 500 V using a vibrating capacitance type micropotential measuring device, and calculated using the following formula: P = (R x 0.9d) / (9 x 10 ５ x L x D x 10 ４ ) Ρ: Volume resistivity (Ω・cm), R: Resistance (Ω), d: Fineness (dtex), L: Sample length (cm), D: Sample density (g / m ２ ).

[0046] (5) Antistatic Yarn Blend Ratio This was calculated using the following formula. The fabric was measured before being dyed and processed into clothing. Antistatic Yarn Blend Ratio = C / (A+B+C) A: Warp fineness × Warp density B: Weft 1 fineness (dtex) × Weft density (pieces / 2.54 cm) × Arrangement ratio C: Weft 2 fineness dtex × Weft density (pieces / 2.54 cm) × Arrangement ratio Here, the arrangement ratios for B and C were calculated by counting the total number of threads in the smallest unit of the fabric weave, then counting the number of wefts 1 and 2, and dividing the number of wefts 1 and 2 by the total number of wefts, and rounding the result to one decimal place.

[0047] (6) Tear strength Measured in accordance with the tear strength method D (pendulum method) specified in JIS L 1096 (2020) 8.17.4.

[0048] (7) Breathability was measured in accordance with the breathability method A (Fragile method) specified in JIS L 1096 (2020) 8.26.1. After five washes, the breathability was measured in the same manner after five washes according to the washing method C4N method specified in the appendix of JIS L 1930 (2014). After hanging and drying, the breathability was measured in the same manner.

[0049] (8) Half-life: Measured in accordance with the half-life measurement method A described in JIS L 1094 (2020). The half-life after 20 washes was measured in the same manner after 20 washes according to the washing method C4N method specified in the appendix of JIS L 1930 (2014).

[0050] (9) Frictional Electrostatic Potential Measurement was performed in accordance with the frictional electrostatic potential measurement method B described in JIS L 1094 (2020). In addition, the frictional electrostatic potential after 20 washes was measured in the same manner after washing 20 times according to the washing method C4N method specified in the appendix of JIS L 1930 (2014) and then hanging to dry.

[0051] (10) Charging Properties The charging properties of cushions made using woven fabrics were measured in a test environment of 20°C and 40%RH in accordance with the triboelectric charge (μC / sheet) specified in JIS T 8118 (2001), using acrylic nylon as the friction cloth. The initial charging properties were measured using cushion A, which had been washed once and then hung to dry according to the JIS L 1930 (2014) C4N method. The charging properties after washing were measured using cushion A, which had been washed three times and then hung to dry according to the JIS L 1930 (2014) C4N method after measuring the initial triboelectric charge.

[0052] (11) Bead Evaluation To evaluate the beads of cushion A made using a woven fabric, cushion A and cotton cloth (JIS standard cloth, four pieces of 40 cm x 40 cm) were charged for 20 minutes under strong conditions in a dryer (NH-D503 manufactured by Panasonic Corporation). In a test environment of 20°C temperature and 50% RH, the charged cushion A was placed on a rubber mat, and 100 cc of foam beads (approximately 2 mm in diameter) were sprinkled on cushion A. The sample was then tilted vertically, and the percentage of foam beads remaining on the surface of cushion A was measured.

[0053] (12) Down Blowing-Out To evaluate the down shedding properties of an actual product, the number of down fibers that shed was measured in accordance with the down blow-out evaluation for woven fabrics specified in GB / T 14272 (2011). The samples used for the down blow-out evaluation conformed to the evaluation method, and evaluation samples with a sample size of 120 x 170 mm and a filling amount of 30 g were prepared. The filling mixture ratio was 90% down / 10% feather, and down with a fill power of 600 or higher was used. In addition, to evaluate the down shedding properties after washing, the woven fabric was washed three times according to the washing method C4N specified in the appendix to JIS L 1930 (2014), and then line-dried. A sample for evaluating down blow-out properties was prepared, and the number of down fibers that shed was measured in the same manner.

[0054] (13) Quilt Height The quilt height was measured with a ruler at the thickest part (quilt height 6 in Figure 2) when two cushions A prepared for the above-mentioned evaluation of chargeability (first cushion 4 and second cushion 5 in Figure 2) were stacked on top of each other, as shown in Figure 2. The quilt height after charging was measured after cushion A and cotton cloth (JIS standard cloth, four pieces of 40 cm x 40 cm) were charged under strong conditions for 20 minutes in a dryer (NH-D503 manufactured by Panasonic Corporation).

[0055] (14) Clo Value (Heat Retention) The heat retention of cushion B was measured according to the method specified in ASTM D 1518-85 (2003). The heat retention after charging was measured after charging cushion B and cotton cloth (JIS standard cloth, four pieces of 40 cm x 40 cm) in a dryer (NH-D503 manufactured by Panasonic Corporation) under strong conditions for 20 minutes.

[0056] [Example 1] A 22 dtex 20 filament polyamide multifilament was used as the warp yarn, a 22 dtex 24 filament polyamide multifilament was used as the weft yarn 1, and a 33 dtex 12 filament antistatic yarn was used as the weft yarn 2. The electrical resistivity was 1.0 × 10 ７Antistatic polyamide multifilaments with a Ω-cm resistance were woven in a plain weave to a warp density of 210 threads / 2.54 cm and a weft density of 160 threads / 2.54 cm in the final fabric. The weft yarns were arranged in a border pattern during weaving, with a thread ratio of 1:2 (weft 1:weft 2) of 9:1. The resulting greige fabric was then scoured and pre-set according to conventional methods, dyed in a jet dyeing machine, and dried. It was then water-repellent treated with a non-fluorine-based resin and calendered. The antistatic yarn blend ratio was 6.3%, with a warp density of 210 threads / 2.54 cm and a weft density of 160 threads / 2.54 cm, resulting in C = 528, A = 4620, and B = 3168. The resulting fabric possessed properties suitable for down clothing and excellent antistatic properties. The cushions made using the obtained fabric were evaluated for their electrostatic chargeability and beading properties, and the evaluation of the quilt height and Clo value showed that they had sufficient volume and heat retention even after the electrostatic treatment. The measurement results are shown in Table 1.

[0057] [Example 2] The same procedure as in Example 1 was carried out, except that the ratio of the number of polyamide multifilaments in weft 1 to the number of antistatic polyamide multifilaments in weft 2 was set to 14:1 and they were arranged in a border pattern during weaving. The resulting fabric had physical properties suitable for down clothing, and had excellent antistatic properties, although they were inferior to those of Example 1. The measurement results are shown in Table 1.

[0058] [Example 3] The same procedure as in Example 1 was carried out, except that the ratio of the number of polyamide multifilaments in weft 1 to the number of antistatic polyamide multifilaments in weft 2 was set to 5:1 and they were arranged in a border pattern during weaving. The resulting fabric had physical properties suitable for down clothing and had better antistatic properties than Examples 1 and 2. The measurement results are shown in Table 1.

[0059] Comparative Example 1: The same procedure as in Example 1 was repeated, except that only polyamide multifilament was used for the weft, and no antistatic polyamide multifilament was used. The resulting fabric had a high frictional electrification voltage, and the electrostatic charge evaluation and bead evaluation of a cushion made using the fabric showed that a large amount of static electricity was generated and remained. The evaluations of quilt height and Clo value showed that sufficient volume was not obtained after the electrostatic treatment, and the heat retention properties were also reduced. The measurement results are shown in Table 1.

[0060] Comparative Example 2 was carried out in the same manner as in Example 1, except that the ratio of the number of polyamide multifilaments in weft 1 to the number of antistatic polyamide multifilaments in weft 2 was set to 19:1 and they were arranged in a border pattern during weaving. The resulting fabric had a high frictional electrification voltage, and the electrostatic charge evaluation and bead evaluation of a cushion made using the fabric showed that there was a lot of static electricity generated and remaining. The evaluations of quilt height and Clo value showed that sufficient fluffiness was not obtained after the electrostatic treatment and that heat retention was also reduced. The measurement results are shown in Table 1.

[0061] Comparative Example 3 The same procedure as in Example 1 was carried out, except that the ratio of the number of polyamide multifilaments in weft 1 to the number of antistatic polyamide multifilaments in weft 2 was set to 3:1 and they were arranged in a border pattern during weaving. The resulting fabric had low frictional charging voltage and good antistatic properties, but the tear strength in the weft direction and the breathability in the initial and post-washing directions were unsuitable for down clothing. The cushion made using the resulting fabric had good results in the electrostatic charge evaluation and bead evaluation, and the quilt height and Clo value evaluations showed sufficient fluffiness and heat retention even after the electrostatic treatment, but the number of blown-out fibers was high, making it unsuitable for down clothing. The measurement results are shown in Table 1.

[0062]

[0063] 1: Length of one side of the cushion 2: Length of the other side of the cushion 3: Distance between quilts 4: First cushion 5: Second cushion 6: Quilt height

Claims

1. A woven fabric containing an antistatic yarn and a polyamide multifilament, wherein the total fineness of the polyamide multifilament is 1.0 to 44.0 dtex, the woven fabric contains the antistatic yarn at least in the weft, the antistatic yarn blending rate in the woven fabric represented by the following formula (1) is 4 to 15%, and the electrical resistivity of the antistatic yarn is 1.0 x 10 ２ ~1.0 x 10 １０ A woven fabric having a resistance to friction of Ω·CM and a frictional electrification voltage of 3000 V or less according to JIS L 1094 (2020) Method B. Antistatic yarn blend ratio = C / (A+B+C)...Equation (1) In equation (1), A is the product of the warp fineness and the warp density of the fabric, B is the product of the fineness of the weft yarns other than the antistatic yarn, the weft density and the arrangement ratio of the fabric, and C is the product of the antistatic yarn fineness, the weft density and the arrangement ratio of the fabric. The arrangement ratio is the ratio of the number of each weft yarn to the total number of weft yarns.

2. The woven fabric according to claim 1, wherein the woven fabric is a plain weave.

3. A woven fabric according to claim 1 or 2, having a half-life of less than 5 seconds according to JIS L 1094 (2020) Method A.

4. The woven fabric according to claim 1 or 2, wherein the polyamide multifilament has a tensile strength of 5.5 cN / dtex or more.

5. The fabric according to claim 1 or 2, wherein a cushion made from the fabric has a Clo value of 1.6 or more.

6. The woven fabric according to claim 1 or 2, which has a cover factor of 1600 or more.

7. The breathability specified in JIS L 1096 (2020) A method is 1.0 cm ３ / cm ２ seconds or less, and the breathability after 5 washes as specified in JIS L 1093 (2014) C4N method is 1.5 cm ３ / cm ２ 3. The fabric according to claim 1, wherein the tensile strength is less than 1 / 2 seconds.

8. A woven fabric according to claim 1 or 2, having a tear strength of 6.0 N or more as specified in JIS L 1096 (2020) D method.

9. The fabric according to claim 1 or 2, wherein the antistatic yarn is contained only in the weft of the fabric.

10. Clothing comprising the fabric of claim 1 or 2.

11. A down garment comprising the fabric according to claim 1 or 2.

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