TWI774843B - weaving - Google Patents

Abstract

The present invention provides a woven fabric comprising a mixed yarn and a first non-metallic yarn intersecting with the mixed yarn, the mixed yarn comprising a second non-metallic yarn and a metal yarn; the mixed yarn and the first non-metallic yarn 1. The diameter ratio of non-metallic yarns: mixed yarn/first non-metallic yarn is 1 or more; the number of the mixed yarns contained in the predetermined area of the woven fabric is the root of all the yarns contained in the predetermined area. 3.5~30% of the number. The mixed yarn is a covering yarn in which the metal yarn is wound around the second non-metallic yarn, or a composite twisted yarn formed by twisting the second non-metallic yarn and the metal yarn.

Description

weaving

Field of Invention The present invention relates to a woven fabric with antibacterial properties.

Background of the Invention In recent years, woven fabrics that are often in contact with the skin are required to have properties that prevent and inhibit bacterial proliferation. As such a woven fabric, there has been proposed a woven fabric in which a non-metallic yarn composed of a natural fiber, a synthetic fiber, or the like is combined with a metallic yarn.

In Patent Document 1, functional fabrics using copper fiber yarns in whole or in part are disclosed. Patent Document 2 discloses a conductive fiber sewed fabric in which a twisted yarn formed by intertwining a plurality of linear aluminum foils on a core yarn and copper fibers are alternately woven at predetermined intervals. Patent Document 3 discloses a woven fabric woven using a mixed yarn formed by twisting a copper-containing yarn containing at least copper and a spinnable fiber. prior art literature Patent Literature

[Patent Document 1] Japanese Patent Laid-Open No. 2004-149945 [Patent Document 2] Japanese Patent Laid-Open No. 2005-206987 [Patent Document 3] Japanese Patent Laid-Open No. 2012-153994

The problem to be solved by the invention In order to improve the antibacterial properties, for example, the yarn diameter of metal yarns can be increased, or the mixed yarns with increased twist times of metal yarns relative to non-metallic yarns can be used, etc., so that the proportion of metal yarns is increased, that is Can. However, although this method will improve the antibacterial property, on the other hand, the cloth will become rough and the texture will be deteriorated.

In addition, in recent years, development of woven fabrics with excellent antibacterial properties and light weight has been expected. If the mixed yarn containing metallic yarn and non-metallic yarn is made thinner in order to reduce the weight, the antibacterial properties will decrease, or the non-metallic yarn in the mixed yarn will be bent and the appearance will be poor. means of solving problems

The present invention relates to a woven fabric comprising a mixed yarn and a first non-metallic yarn intersecting with the mixed yarn, the mixed yarn comprising a second non-metallic yarn and a metal yarn; the mixed yarn and the first non-metallic yarn The diameter ratio of metal yarns: mixed yarn/first non-metallic yarn is 1 or more; the number of the mixed yarns contained in the predetermined area of the woven fabric is 3.5 of the total number of yarns contained in the predetermined area ~30%. This fabric has excellent antibacterial properties while being lightweight and textured.

The hybrid yarn is a covered yarn in which a metal yarn is wound on a second non-metallic yarn, or may be a combined twisted yarn formed by twisting the second non-metallic yarn and the metal yarn. Thereby, the antibacterial property can be further improved. Invention effect

According to the present invention, a woven fabric with excellent antibacterial properties, good texture and light weight can be obtained.

The woven fabric of this embodiment includes a mixed yarn and a first non-metallic yarn intersecting with the mixed yarn. The mixed yarn includes the second non-metallic yarn and the metallic yarn. The diameter ratio of the mixed yarn and the first non-metallic yarn: the mixed yarn/the first non-metallic yarn is 1 or more. In addition, the number of mixed yarns contained in the predetermined area of the woven fabric is 3.5-30% of the total number of yarns contained in the predetermined area.

According to the woven fabric of the embodiment of the present invention, the number of mixed yarns contained in the woven fabric is set to a specific range, and the diameter ratio of the mixed yarn and the first non-metallic yarn intersecting with it is set to a specific range. , which can reduce the content of the mixed yarn but still expose a large amount of at least one main side of the woven fabric. Thereby, the obtained woven fabric is excellent in texture and light in weight, and also has excellent antibacterial properties.

[weaving] The woven fabric is formed by interlacing at least the first non-metallic yarn and the mixed yarn using a loom. The mixed yarn may be contained in both the weft and the warp, or only in the weft, or only in the warp. In addition, one of the warp and the weft may be formed of only the mixed yarn.

The number of mixed yarns contained in a predetermined area of the woven fabric (hereinafter referred to as area R) is set to be 3.5~30% of the total number of yarns contained in this area R. If the number of mixed yarns is within the above range, the woven fabric is light and soft. And the economy is also excellent. The ratio of the number of mixed yarns can be more than 5%, and can also be more than 7%. The ratio of the number of mixed yarns may be less than 25% or less than 20%. All the yarns include the mixed yarn, the first non-metallic yarn, and the later-described third non-metallic yarn.

The so-called predetermined area is an area enclosed by a square with one side of 2 cm, which includes at least one mixed yarn when viewing one main surface of the woven fabric. The number of yarns contained in the area R can be calculated, for example, as follows; in the area surrounded by a 2cm square, the yarns that can be seen from the two main sides of the woven fabric are counted in a non-repetitive manner. Calculated by the number of wires.

Here, a single yarn is a unit containing one or more fibers that can be introduced into a loom as a warp or weft alone for weaving. The fibers constituting the yarn include machine-spun yarn and filament. However, for a mixed yarn, one twisted yarn including one or more second non-metallic yarns and one or more metallic yarns is one yarn.

When the woven fabric is viewed from the normal direction of the main surface, the area of the mixed yarns in at least one of the main surfaces may be 5% or more, 10% or more, or 13% or more of the woven fabric area. Even in such a small area ratio of the mixed yarn, high antimicrobial properties can be easily obtained. The area ratio of the mixed yarn may be 100% or less, 80% or less, or 50% or less.

The area ratio of the mixed yarn can be obtained by photographing the woven fabric from the normal direction of one main surface using a microscope (for example, Digital HF Microscope VH-8000 manufactured by KEYENCE Corporation). For example, photographing one main surface of a woven fabric at three positions with changing positions, and selecting a rectangle containing at least one mixed yarn and enclosing a length of 2.3 cm and a width of 3.1 cm from each of the photographed fields of view completed area. Among the three selected areas, divide the area of the mixed yarn by the area of the area to calculate the area ratio of the mixed yarn. The average value of these was taken as the area ratio of the mixed yarn.

The warp of the woven fabric may also contain a mixed yarn and a non-metallic yarn (third non-metallic yarn) arranged along the mixed yarn. Similarly, the weft yarn may contain a mixed yarn and a third non-metallic yarn. When the warp yarn and/or the weft yarn includes the mixed yarn and the third non-metallic yarn, the mixed yarn may be arranged at equal intervals or may be arranged at irregular intervals. Among them, the mixed yarns are preferably arranged at equal intervals. At this time, the obtained woven fabric was soft and exhibited sufficient antibacterial properties.

In the above case, the density of the mixed yarn is not particularly limited. The density of the mixed yarn can be a constant value across the entire woven fabric, or the density of the mixed yarn can be changed locally. Among them, it is preferable that the mixed yarns are equally arranged in a ratio of "one mixed yarn to eight third non-metallic yarns". This means that, for example, when the mixed yarn is included in the weft, the number of the third non-metallic yarn constituting the weft is 8 times or less the number of the mixed yarn. The number ratio of the mixed yarn to the third non-metallic yarn can be 1:2~1:8, or 1:2~1:4. When the number ratio of the mixed yarn to the third non-metallic yarn is within the above range, the woven fabric is light in weight and soft.

The interval between adjacent hybrid yarns may be 3600 μm or less, 3000 μm or less, or 2000 μm or less. When the distance between the mixed yarns is within this range, the obtained antibacterial effect is enhanced. The distance between the mixed yarns refers to the width of the gap formed between adjacent mixed yarns. The width is the length in the direction perpendicular to the length direction of the mixed yarn.

The thickness of the woven fabric is not particularly limited, and may be 70 to 1500 μm, 110 to 1000 μm, or 250 to 750 μm. According to the present embodiment, a lighter and extremely thin woven fabric can be produced as compared with the conventional woven fabric containing metal yarns. In addition, the thickness of a woven fabric can be measured using, for example, a thickness measuring device (manufactured by Ozaki Seisakusho, PEACOCK G-6).

In the woven fabric of this embodiment, the types, amounts, diameters, and types of the first non-metallic yarn, the second non-metallic yarn, and the metallic yarn in the woven fabric, and the third non-metallic yarn used according to needs The degree of freedom of design such as , configuration, etc. is high, and various woven fabrics according to the intended use, antibacterial properties, etc. can be obtained.

The production method of the woven fabric of the present embodiment is not particularly limited, and can be produced by weaving with a loom in the same manner as a normal fabric. As the loom, a known loom such as a shuttle loom, a sword mast loom, an air jet loom, a guide knitting machine, a water jet loom, a small steel shuttle loom, a jacquard shuttle loom and the like can be used.

The weave structure of the woven fabric is not particularly limited, and three original weaves, namely plain weave, twill weave, and satin weave; Double-layer organization, multi-layer organization, etc. Among them, from the viewpoint of texture, the satin weave is preferable, and the five satin weave is more preferable.

Staphylococcus aureus, pneumococcus, etc. are mentioned as the microbes which are the object of antibacterial in the woven fabric of this embodiment.

(1st non-metallic yarn) Although it does not specifically limit as a 1st nonmetallic yarn, Yarn obtained from conventional fibers, such as a natural fiber, a regenerated fiber, a semi-synthetic fiber, a synthetic fiber, are mentioned. Such fibers are substantially free of metals. These fibers may be used alone or in combination of two or more. Among them, synthetic fibers, particularly polyester fibers, may be used for excellent durability. There are many types of polyester fibers, and it is easy to select those suitable for weaving purposes. Therefore, the woven fabric can be easily applied to various applications. In addition, the woven fabric including the yarn made of polyester fiber is also easier to be subjected to post-processing such as dyeing, water repellent processing, oil repellent processing, antibacterial processing, deodorization processing, flame retardant processing, and UV resistance processing. In addition, even if polyester fiber is dyed before spinning (dyed yarn), the texture is not easily changed. Therefore, it is possible to omit the processing after the film can be formed on the surface of the metal yarn, and it is easier to fully exert the antibacterial properties of the metal yarn.

The form of the first non-metallic yarn is not particularly limited, and conventional forms such as machine-spun yarn (staple-fiber yarn), multifilament yarn, and monofilament yarn (long-fiber yarn) can be exemplified. Among them, from the viewpoint of quality, a single filament and a multi-filament may be used, and in particular, a multi-filament may be used from the viewpoint of texture. In addition, the cross-sectional shape of the first non-metallic yarn (fiber) is not particularly limited. It may be a circular shape or a so-called special-shaped cross-section yarn other than the circular shape.

The diameter of the first non-metallic yarn may be 24-644 μm or 64-203 μm. If the diameter of the first non-metallic yarn is 24 μm or more, yarn breakage is unlikely to occur. In addition, it is not necessary to increase the weave density, and the cost can be suppressed. If the diameter of the first non-metallic yarn is 644 μm or less, the obtained woven fabric is less likely to become rough, and the texture is less likely to be damaged.

The diameter of the first non-metallic yarn can be obtained by photographing the woven fabric from the normal direction of one principal surface using a microscope as described above. For example, photographing one main surface of the woven fabric at three positions with changing positions, and measuring the length in the direction perpendicular to the longitudinal direction of the first non-metallic yarn in each of the photographed fields of view at three arbitrary points, using these The average value is the diameter of the first non-metallic yarn. The same goes for the diameter of the hybrid yarn.

In the above case, the fineness (total fineness) of the first non-metallic yarn is 6~4500dtex, and may also be 45~450dtex. The fineness is a value representing the fiber thickness prescribed in accordance with JIS L 0101-1978 (Taxis), and is a value measured in accordance with the JIS L 1013-1999 B method.

The first non-metallic yarn can be subjected to various treatments such as water absorption, water repellency, and deodorization, and conventional treatments such as dyeing.

(mixed yarn) The mixed yarn includes the second non-metallic yarn and the metallic yarn. Specifically, the mixed yarn is preferably a covering yarn in which a metal yarn is wound around a second non-metallic yarn, or a combined twisted yarn formed by twisting the second non-metallic yarn and the metallic yarn. In addition, in this specification, two yarns are aligned and twisted to make one yarn, which is called a combined twist.

When the mixed yarn is a covered yarn, the mixed yarn is formed by winding the metal yarn around the second non-metallic yarn. One mixed yarn includes one or more second non-metallic yarns and one or more metallic yarns. The number of winding times of the metal yarn to the second non-metallic yarn may be 1.1 to 3 times/cm. When the number of windings is 1.1 times/cm or more, desired antibacterial properties can be easily obtained. In addition, when the number of windings is 3 times/cm or less, the weight of the hybrid yarn itself is also reduced, and the economical efficiency is also excellent. In addition, the woven fabric obtained by using the mixed yarn is less likely to become rough.

When the hybrid yarn is a twisted yarn, the hybrid yarn is formed by twisting the second non-metallic yarn and the metallic yarn together. One mixed yarn includes one or more second non-metallic yarns and one or more metallic yarns. The twisting times of the combined twisted yarn can be 0.5~20 times/cm, or 3~6 times/cm. When the number of twists is 0.5 times/cm or more, desired antibacterial properties can be easily obtained. In addition, when the number of twists is 20 times/cm or less, the weight of the hybrid yarn itself is also reduced, and the economical efficiency is also excellent. In addition, the woven fabric obtained by using the mixed yarn is less likely to become rough.

The twisting direction of the covered yarn and the combined twisted yarn may be either Z twist or S twist. Although the twisting directions are different, the antibacterial properties and texture of the obtained woven fabrics are the same. Therefore, the twist direction may be appropriately determined taking into account the trimming during weaving.

The diameter of the mixed yarn can be 44~744μm or 64~344μm. If the diameter of the mixed yarn is 44 μm or more, yarn breakage is unlikely to occur. In addition, it is not necessary to increase the weave density, and the economical aspect is also excellent. If the diameter of the mixed yarn is less than 744 μm, the obtained woven fabric will not become rough and hard, and the texture will not be damaged.

The diameter ratio of the mixed yarn and the first non-metallic yarn: the mixed yarn/the first non-metallic yarn is 1 or more. Diameter ratio: If the mixed yarn/first non-metallic yarn is 1 or more, the number of mixed yarns (metallic yarns) exposed on the surface of the woven fabric increases, so the obtained woven fabric has higher antibacterial properties. Ratio: mixed yarn/first non-metallic yarn may be 1.2 or more, or 2 or more. Ratio: the upper limit of the mixed yarn/first non-metallic yarn is not particularly limited, for example, it can be 35, 20, or 10.

(metal yarn) Use wire-like metal as the metal yarn. The metal yarn can be produced by, for example, passing a metal processed into a rod shape through a die having a desired diameter and extending it under heating or at normal temperature. Examples of the material of the metal yarn include metals such as copper, silver, and zinc. Moreover, the copper alloy which combined copper, zinc, silver, nickel, etc. individually or in plural can also be mentioned. Among them, from the viewpoint of antibacterial properties, a metal yarn containing copper as a main component (accounting for 50% by mass or more) may be used. Examples of the metal yarn mainly composed of copper include soft copper wire for electrical use (JIS C3102), hard copper wire, and oxygen-free copper (JIS H3100, C1020). Among them, from the viewpoint of antibacterial property and economical efficiency, hard copper wire may be used; from the viewpoint of antibacterial property, oxygen-free copper may be used. The metal yarn constituting the hybrid yarn is not limited to one type, and may be two or more types.

The diameter of the metal yarn is not particularly limited, and may be 20-100 μm, 30-50 μm, or 40-50 μm. If the diameter of the metal yarn is 20 μm or more, yarn breakage is unlikely to occur, and desired antibacterial properties can be obtained. If the diameter of the metal yarn is 100 μm or less, it is easy to obtain a light-weight woven fabric. In addition, the obtained woven fabric does not easily become rough.

(2nd non-metallic yarn) As the second non-metallic yarn constituting the hybrid yarn, the same non-metallic yarn as the above-mentioned first non-metallic yarn can be used, and it can be appropriately selected according to the properties required for the woven fabric. The first non-metallic yarn and the second non-metallic yarn may be the same or different. In addition, the second non-metallic yarn constituting the hybrid yarn is not limited to one type, and may be two or more types.

The diameter ratio of the metallic yarn to the second non-metallic yarn: metallic yarn/second non-metallic yarn is not particularly limited. The ratio: metallic yarn/second non-metallic yarn may be, for example, 0.2 or more and 1 or less.

(3rd non-metallic yarn) As the third non-metallic yarn that can be arranged along the mixed yarn, the same non-metallic yarn as the above-mentioned first non-metallic yarn can be used, and it can be appropriately selected according to the properties required for the woven fabric. The first non-metallic yarn and the third non-metallic yarn may be the same or different. The second non-metallic yarn and the third non-metallic yarn may be the same or different. The third non-metallic yarn may be one type or two or more types.

The diameter ratio of the hybrid yarn to the third non-metallic yarn: hybrid yarn/third non-metallic yarn is not particularly limited. The ratio: mixed yarn/third non-metallic yarn may be, for example, 0.05 or more and 35 or less; 0.5 or more and 5 or less; 0.7 or more and 2 or less.

Hereinafter, the present invention will be described in further detail by way of examples, but the present invention is not limited to these examples.

＜Production of mixed yarn＞ (Mixed Yarn A) With the twisting direction as S twist and the number of twists as 2.5 times/cm, a soft copper wire (metal yarn, diameter 40 μm) made of oxygen-free copper was coated on a polyester yarn (second non-metallic yarn, diameter 124 μm, fineness 167 dtex/48f), and mixed yarn A (164 μm in diameter) was produced.

(Mixed Yarn B) The polyester yarn (second non-metallic yarn) was coated with a hard copper wire (metal yarn, diameter 40 μm) made of oxygen-free copper with the twisting direction as S twist and the number of twists at 2.5 times/cm. , diameter 124μm, fineness 167dtex/48f), to produce mixed yarn B (diameter 164μm).

(Mixed Yarn C) With the twisting direction as S twist and the number of twists as 2.5 times/cm, a hard copper wire (metal yarn, diameter 50 μm) made of oxygen-free copper was coated on a polyester yarn (second non-metallic yarn). , diameter 124μm, fineness 167dtex/48f), to produce mixed yarn C (diameter 174μm).

[Example 1] ＜Production of weaving＞ The produced mixed yarn A and polyester yarn A (1st non-metallic yarn, diameter 72 μm, fineness 56dtex/25f), and polyester yarn B (3rd non-metallic yarn, diameter 174 μm, fineness 330dtex/288f) for weaving to produce a plain weave. As shown in Table 1, the warp yarn was polyester yarn A. The weft yarn is polyester yarn B and mixed yarn A; in the weft yarn, the ratio of the number of mixed yarn A to polyester yarn B is 1:2. The number of mixed yarns A contained in the predetermined area R of the woven fabric (the area surrounded by a square with one side of 2 cm) is 11.9% of the total number of warp and weft contained in the area R, and the mixed yarn A Configured to be equally spaced. In the obtained woven fabric, the interval between adjacent mixed yarns A was 1154 μm. In addition, when the woven fabric is viewed from the normal direction of the main surface, the area of the mixed yarn A is 15.6% of the woven fabric area on both sides of the woven fabric. There is a gap between adjacent hybrid yarn A and polyester yarn B. The thickness of the woven cloth is 293 μm.

＜Evaluation of weaving＞ The following evaluation was performed on the obtained woven fabric. The results are shown in Table 2.

(1) Antibacterial properties The test cloth (0.40g±0.05g) was cut out from the produced woven cloth, and it evaluated based on JIS L1902-2015 (bacterial liquid absorption method). Staphylococcus aureus NBRC 12732 was used as the test strain, and white cloth with 100% cotton was used as the standard cloth. The test cloth and the standard cloth were inoculated with the test bacteria liquid, and the measured value of the number of viable bacteria at the moment of inoculation with the test bacteria liquid and after 18 hours of culture was obtained. Then, the antibacterial activity value S and the bactericidal activity value L were calculated according to the following formula. When the antibacterial activity value is 2.2 or more and the bactericidal activity value exceeds 0, it is judged that the antibacterial property is excellent. S=(Mb-Ma)-(Mc-Mo) L=Ma-Mc S: static bacteriostatic activity value L: bactericidal activity value Ma: the logarithm of the number of bacteria in the standard cloth inoculated with the test bacteria solution Mb: the logarithm of the number of bacteria in the standard cloth after 18 hours of culture Mo: the logarithmic value of the number of bacteria in the test cloth at the moment of inoculation of the test bacteria solution Mc: The logarithm of the number of bacteria in the test cloth after 18 hours of culture

(2) texture The woven fabric is touched and judged according to the following criteria. (determination) Best: Soft. Good: There is a slightly rough part, but the degree is not a problem. Bad: Overall rough. Or breakage of metal yarn is confirmed.

[Example 2] A woven fabric was produced in the same manner as in Example 1, except that the number ratio of the mixed yarn A and the polyester yarn B in the weft was changed to 1:4. The number of mixed yarns A contained in the predetermined area R of the woven fabric (area surrounded by a square with one side of 2 cm) was 7.1% of the total number of warp and weft contained in the area R. In the obtained woven fabric, the interval between adjacent mixed yarns A was 1865 μm. When viewing the woven fabric from the normal direction of the main surface, the area of the mixed yarn A on both sides of the woven fabric is 16.6% of the area of the woven fabric. The thickness of the woven cloth was 279 μm. Table 2 shows the evaluation results of (1) antibacterial properties and (2) texture.

[Example 3] A woven fabric was produced in the same manner as in Example 1, except that the number ratio of the mixed yarn A and the polyester yarn B in the weft was changed to 1:6. The number of mixed yarns A contained in the predetermined area R of the woven cloth (area surrounded by a square with one side of 2 cm) was 5.1% of the total number of warp and weft contained in the area R. In the obtained woven fabric, the interval between adjacent mixed yarns A was 2649 μm. When viewing the woven fabric from the normal direction of the main surface, the area of the mixed yarn A on both sides of the woven fabric is 6.2% of the woven fabric area. There is a gap between adjacent hybrid yarn A and polyester yarn B. The thickness of the woven cloth is 274 μm. Table 2 shows the evaluation results of (1) antibacterial properties and (2) texture.

[Example 4] A woven fabric was produced in the same manner as in Example 1, except that the number ratio of the mixed yarn A and the polyester yarn B in the weft was changed to 1:8. The number of mixed yarns A contained in the predetermined area R of the woven cloth (area surrounded by a square with one side of 2 cm) was 3.9% of the total number of warp and weft contained in the area R. In the obtained woven fabric, the interval between adjacent mixed yarns A was 3424 μm. When the woven fabric is viewed from the normal direction of the main surface, the area of the mixed yarn A is 7.4% of the woven fabric area on both sides of the woven fabric. The thickness of the woven cloth is 267 μm. Table 2 shows the evaluation results of (1) antibacterial properties and (2) texture.

[Example 5] A woven fabric was produced in the same manner as in Example 1, except that the mixed yarn A was changed to the mixed yarn B. The number of mixed yarns B contained in the predetermined area R of the woven fabric (area surrounded by a 2 cm square) was 11.9% of the total number of warps and wefts contained in the area R. In the obtained woven fabric, the interval between adjacent hybrid yarns B was 1121.9 μm. When viewing the woven fabric from the normal direction of the main surface, the area of the mixed yarn B on both sides of the woven fabric is 15.1% of the area of the woven fabric. There is a gap between the adjacent hybrid yarn B and polyester yarn B. The thickness of the fabric is 305 μm. Table 2 shows the evaluation results of (1) antibacterial properties and (2) texture.

[Example 6] A woven fabric was produced in the same manner as in Example 2, except that the mixed yarn A was changed to the mixed yarn B. The number of mixed yarns B contained in the predetermined area R of the woven fabric (area surrounded by a square of 2 cm on one side) was 7.1% of the total number of warp and weft contained in the area R. In the obtained woven fabric, the interval between adjacent hybrid yarns B was 1640.6 μm. When viewing the woven fabric from the normal direction of the main surface, the area of the mixed yarn B on both sides of the woven fabric is 16.3% of the woven fabric area. The thickness of the woven cloth is 291 μm. Table 2 shows the evaluation results of (1) antibacterial properties and (2) texture.

[Example 7] A woven fabric was produced in the same manner as in Example 3, except that the mixed yarn A was changed to the mixed yarn B. The number of mixed yarns B contained in the predetermined area R of the woven fabric (area surrounded by a 2 cm square) was 5.1% of the total number of warp and weft contained in the area R. In the obtained woven fabric, the interval between adjacent hybrid yarns B was 3430.4 μm. When viewing the woven fabric from the normal direction of the main surface, the area of the mixed yarn B on both sides of the woven fabric is 6.4% of the woven fabric area. There is a gap between the adjacent hybrid yarn B and polyester yarn B. The thickness of the woven cloth is 284 μm. Table 2 shows the evaluation results of (1) antibacterial properties and (2) texture.

[Example 8] A woven fabric was produced in the same manner as in Example 4, except that the mixed yarn A was changed to the mixed yarn B. The number of mixed yarns B contained in the predetermined area R of the woven cloth (area surrounded by a square with one side of 2 cm) was 3.9% of the total number of warp and weft contained in the area R. In the obtained woven fabric, the interval between adjacent hybrid yarns B was 3579.8 μm. When viewing the woven fabric from the normal direction of the main surface, the area of the mixed yarn B on both sides of the woven fabric is 7.2% of the woven fabric area. The thickness of the woven cloth is 278 μm. Table 2 shows the evaluation results of (1) antibacterial properties and (2) texture.

[Example 9] Mixed yarn C and polyester yarn C (1st non-metallic yarn, diameter 124μm, fineness 167dtex/48f), and polyester yarn D (3rd non-metallic yarn, diameter 124μm, fineness 167dtex/ 48f) Weaving is performed to produce a satin weave. As shown in Table 1, the warp yarns are mixed yarns C and polyester yarns C, and the weft yarns are polyester yarns D; in the warp yarns, the ratio of the number of mixed yarns C to polyester yarns C is 1:4. The number of mixed yarns C contained in the predetermined area R of the woven fabric (the area enclosed by a square with one side of 5cm) is 14.2% of the total number of warp and weft contained in the area R, and the mixed yarn C is at The warp yarns are arranged at equal intervals. The weaving density (design density) is 150 warps/2.54cm and 60 wefts/2.54cm. In one of the main surfaces of the obtained woven fabric, the mixed yarns C were arranged to be in contact with each other (at an interval of 0 μm); the area of the mixed yarns C occupied 100% of the area of the main surface. On the other main surface, the area of the mixed yarn C was 7.1% of the area of the main surface. The thickness of the woven cloth is 275 μm. Table 2 shows the evaluation results of (1) antibacterial properties and (2) texture.

The obtained woven fabric was separately washed 5 times, and the antibacterial properties and texture of Staphylococcus aureus and Pneumococcus were evaluated for the woven fabric before washing and the woven fabric after washing, respectively. The washing method is based on the washing method (standard washing method) of the SEK mark fiber products stipulated by the Japan Fiber Evaluation Technology Association. In addition, the evaluation of antibacterial properties was performed in the same manner as in the antibacterial property test of (1), using Staphylococcus aureus NBRC 12732 and Klebsiella pneumoniae NBRC 13277 as test strains. The evaluation results are shown in Table 3.

[Table 1]

[Table 2]

[table 3]

The woven fabrics obtained in Examples 1 to 9 were thin. In addition, according to Table 2 and Table 3, it can be seen that these woven fabrics exhibit high antibacterial properties and are also excellent in terms of texture. Moreover, as is clear from Example 9, even if the woven fabric of this embodiment is washed, the antibacterial properties are not lowered.

From this, it can be seen that with regard to woven fabrics containing metal yarns, by limiting the diameter ratio of the mixed yarns to the first non-metallic yarns and the number of mixed yarns contained in the woven fabrics, both excellent antibacterial properties and texture can be achieved. Complete. industrial availability

According to the present invention, a woven fabric excellent in antibacterial properties and texture can be obtained. Furthermore, even if the metal yarn is contained, the woven fabric can be made thinner. Therefore, the woven fabric of the present invention can be widely used in linens such as sheets, pillowcases, towels, etc.; pajamas, white robes, aprons, hats, group uniforms, uniforms and other clothing materials; car seats, chairs, baby carriages, etc. Seat cushions and their cushion covers; bags, shoes, curtains, tents, sleeping bags, placemats, liners for refrigerators, etc.

Claims (4)

A woven fabric comprising a mixed yarn and a first non-metallic yarn intersecting with the mixed yarn, the mixed yarn comprising a second non-metallic yarn and a metal yarn; the mixed yarn and the first non-metallic yarn Yarn diameter ratio: mixed yarn/first non-metallic yarn is 1 or more; the number of mixed yarns contained in the predetermined area of the woven fabric is 3.5 of the total number of yarns contained in the predetermined area ~25%; the aforementioned woven fabric further contains a third non-metallic yarn arranged along the aforementioned mixed yarn; the ratio of the aforementioned mixed yarn to the aforementioned third non-metallic yarn, namely the aforementioned mixed yarn: the aforementioned third Non-metallic yarn = 1: 2~8; the diameter of the metal yarn is in the range of 20~100μm; the mixed yarn is a covering yarn that wraps the metal yarn on the second non-metallic yarn, or is a A twisted yarn formed by twisting the second non-metallic yarn and the metal yarn; when the mixed yarn is the covered yarn, the number of times the metal yarn is wound on the second non-metallic yarn is The range of 1.1 to 3 times/cm; in the case where the mixed yarn is the above-mentioned combined twisted yarn, the twisted number of the above-mentioned combined twisted yarn is in the range of 0.5 to 20 times/cm. The woven fabric according to claim 1, wherein in the mixed yarn, the diameter ratio of the metal yarn to the second non-metal yarn: metal yarn/second non-metal yarn is 0.2 or more and 1 or less, and The interval between adjacent mixed yarns is 3600 μm or less. The woven fabric according to claim 1 or 2, wherein the diameter ratio of the mixed yarn to the third non-metallic yarn: mixed yarn/third non-metallic yarn is 0.5 or more and 5 or less. The woven fabric of claim 1 or 2, wherein the aforementioned mixed yarns are arranged at equal intervals.